I'm thrilled to see so many active bloggers expressing different things about their EX.

So...here's my first one. I've begun to notice that when I depress the gas pedal, I hear a ringing sound (much like the ringing sound you have after you leave a night club/listen to loud music for a prolong period). While in drive, the sound happens immediately as I depress the gas. While in neutral, the sound doesn't come around until about 2k rpm. It's very subtle, but now that I know it's there, it is VERY anoying. So, does anyone else have this issue. Either my hearing is like superman's or I'm going crazy - I hope it's the first option.

I'm wondering if it's related to the fuel pump noise I hear at startup...I'm going in on Monday to have the pump replaced and perhaps that will solve it, but I'm doubtful. I think the two issues are independent.

Thoughts?



Post Title: Re: "Ringing" Engine Noise Anyone? (MagicMan2000)
Posted by: sg77 at 10:17 PM 11/22/2008

I too turn up the radio and it becomes inaudible...maybe that's the fix!

I don't think it will leave me stranded, but it sure can get anoying when I'm listening for it.

I've heard it in other cars I've driven (I'm always traveling, so I rent an aweful lot of cars), but I usually don't care because it's a rental...

I can see me at the dealer trying to explain this..."you hear it, you hear it? There it is again, just press the gas pedal." Technician says, "I don't hear anything...you're hearing things. Perhaps you should go see a shrink."



Post Title: Re: "Ringing" Engine Noise Anyone? (MagicMan2000)
Posted by: dividedhighw at 1:57 PM 11/23/2008

Hehe ... welcome to NICO, Magic!!

I don't hear the sound you're describing, but that could just be the ravages of too many years playing in a rock band. I've owned several turbo-charged cars that emit a characteristic whistling, but not in my EX.

Cheers,
David



Post Title: Re: "Ringing" Engine Noise Anyone? (MagicMan2000)
Posted by: sg77 at 12:09 AM 11/24/2008

I've been meaning to post about this one actually.

I think the best way of describing it is a very high pitched electrical buzzing noise. Just one pitch. It's either there or its not. It does it as soon as the gas pedal is depressed even the slightest amount, or like you said if cruise control takes over. I normally have the radio on fairly loud so can't hear it, but with it turned down or off its ALWAYS there. It's coming from inside the cabin somewhere, no idea what it is though, and it is annoying. You're right, it does sound like when you've been at a club for hours and you come out and your ears are ringing.

The problem with this is that it's so high pitched, quite a few people may not be able to hear it. As you get older, your ability to hear higher frequencies diminishes.



Post Title: Re: "Ringing" Engine Noise Anyone? (aft981)
Posted by: MagicMan2000 at 5:59 PM 11/24/2008

So, I don't have to go see a shrink afterall

sg77 and aft981 thank you for confirming my suspicion!!

See, once you hear it for the first time and know what to listen for, it will never go away. It's kinda like this:

Well, I have news. I took my car into the dealer today to get the fuel pump replaced and to investigate this sound. Good news and bad news. Good news: They replaced the fuel pump so no more start-up noise!!!
Bad news: They were unable to notice the high-pitched noise I can hear each time I step on the gas pedal.

The technician said that if enough people complain about it (like the fuel pump issue), then Infiniti would likely issue a TSB. The key for the moment is to be patient he said ...so,

I'm curious to see if the more people who come across this thread write about it as well...please do, I need more therapy that says I'm not crazy or hearing things.

But for now it's just



Post Title: Re: "Ringing" Engine Noise Anyone? (MagicMan2000)
Posted by: MagicMan2000 at 11:58 AM 12/8/2008

It's super anoying and I'm finding it difficult to fathom how I'm going to have this car for years with this ringing...I've tried to ignore it, but now that I know it's there, I can't! It sucks having to listen to it.

All the way to work today I was listening to it and now I'm really a grump so sorry for the sour mood...



Post Title: Re: "Ringing" Engine Noise Anyone? (MagicMan2000)
Posted by: KJ911TT at 2:43 PM 12/8/2008

I e-mailed Infiniti regarding your problem and they replied with the following:

"Dear Sir/Madam,

We have looked into your problem and have been advised to inform you that the fix for your problem is included with your vehicle.

Your vehicle is equipped with an 11-speaker Bose audio system that not only sounds great, but is extremely effective at drowning out random noises that may surface during regular use of your vehicle.

If you continue hearing the sound, please turn up the volume of the audio system until you can no longer hear the sound.

We would like to thank you for purchasing an Infiniti vehcile and if you have any further questions, please feel free to contact us at 1-800-662-6200."

I hope that helps!

- KJ



Post Title: Re: "Ringing" Engine Noise Anyone? (KJ911TT)
Posted by: MagicMan2000 at 4:05 PM 12/8/2008

I hope that's a joke. Besides... the Bose System can't hold a candle to the Lexus Mark Levinson/Acura ELS System.

I also am having the same issue. Taken my car in 4 times now and still the Service Director can't hear a damn thing. I thought I was going nuts as well... until my wife heard it too.

If anyone figures out what this is... please post it here. I've got an appointment next week.

BTW... I think the trick to diagnosing this is to drive the car with a tech... since you know how to make the noise consistently. Have them sit in the seat behind you. High frequency noise is directional and I think the noise is coming from the front passenger area. So if someone is sitting there... they are blocking the noise from being heard.

If anyone wants Mark Igo's email address (General Manager of Infiniti) to complain, let me know and I'll post it.

Modified by tazdevl at 10:37 PM 12/21/2008



Post Title: Re: "Ringing" Engine Noise Anyone? (tazdevl)
Posted by: tazdevl at 8:11 AM 1/8/2009

I don't think the noise is from the engine compartment. It's electrical in nature and almost sounds like it could be a grounding issue or a short circuit.

Modified by tazdevl at 9:03 AM 2/19/2009



Post Title: Re: "Ringing" Engine Noise Anyone? (tazdevl)
Posted by: MagicMan2000 at 8:10 AM 1/10/2009

I've had a friend press the gas pedal while I perused around the engine compartment and I couldn't find anything there. I'ts coming from within the cabin area in the front. I suspect that it may be behind the status/nav screen, but have been unable to verify...



Post Title: Re: "Ringing" Engine Noise Anyone? (MagicMan2000)
Posted by: tazdevl at 3:38 PM 1/22/2009

Will post what the resolution is later, asssuming they have one.

Here's what I told them...
- Electrical whine or ringing (good description magicman... think that made the diff) sound that happens under gentle acceleration from a stop.
- If they don't know what to listen for, they can try taking their foot off the gas suddenly and they should notice the absence of sound.
- Also easy to hear when at speed and you're lightly goosing the throttle to maintain speed.
- Easier to hear under 40mph.
- Cannot have someone in the passenger seat because the sound is emanating from that area.

Modified by tazdevl at 3:49 PM 1/22/2009



Post Title: Re: "Ringing" Engine Noise Anyone? (tazdevl)
Posted by: tazdevl at 2:13 PM 1/26/2009

If this doesn't get resolved soon... I'm about to hit the frequency limit with the lemon law. Don't blame the dealership, they're doing their best but Infiniti needs to do a better job on the design, manuf or QC front. This in many ways has been a less than desirable ownership experience because the car has been in so many times for so many different things.

Not to mention, I still have a driver side window rattle on asphalt seamed roads and drivers seat shift under hard braking (but not panicked) which has yet to be "witnessed" by the dealership.

Modified by tazdevl at 9:10 AM 2/19/2009



Post Title: Re: "Ringing" Engine Noise Anyone? (tazdevl)
Posted by: MagicMan2000 at 7:35 PM 1/26/2009

Have you brought up the 5 time in the shop lemon law thing with them? Were they receptive?



Post Title:
Posted by: k37 at 3:56 AM 1/27/2009

a little info to add to this:

Contact Bose Headquarters as i have and file a complaint: support@bose.com or call them direct 508-766-9522

i've been on tabs with them for a month now and even though their technicians dont hear it the more people that contact them the more they wont treat this as an "isolated" case.

Best of luck to us all and most importantly our sanities!

Modified by k37 at 4:09 AM 1/27/2009

Modified by k37 at 4:09 AM 1/27/2009

Modified by k37 at 4:10 AM 1/27/2009



Post Title: Re: (k37)
Posted by: tazdevl at 9:42 AM 1/27/2009

K37... Called Bose and Infiniti to file a complaint.

FYI if you're calling Bose, you need to call Infiniti Consumer Affairs at 800-662-6200 and get a complaint number generated first.

MM... Infiniti doesn't need to be OK with it. The law varies state by state but in general if your car is in the shop 5 times for the same repair or more than 30 days in your first 2 years of ownership you can get your money back... less usage of course.

Post Title:
Posted by: k37 at 11:22 AM 1/27/2009

I like Infinitis but I'm about ready to go to buy a Lexus so I won't have these issues and I can deal with a company that tries to fix problems if they do occur... or I'll buy a BMW, then I'll know what to expect when it comes to crappy service from corporate and a car that has problems.

Modified by tazdevl at 1:42 PM 1/27/2009



Post Title:
Posted by: k37 at 10:57 PM 1/27/2009

G37 has the same problem.

http://myg37.com/forums/g37-se....html



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (GoGoG37)
Posted by: tazdevl at 11:42 PM 2/16/2009

Thanks for letting us know. For those of you that are extremely sick of Infiniti sitting on its *** and not taking care of its customers like a luxury automaker should, feel free to emai Mark Igo directly. He's the GM of Infiniti USA.

mark.igo@infiniti.com
mark.igo@nissan-usa.com
mark.igo@infinitiusa.com

I sent an email to his office a while ago and got a response from his executive assistant. So one of these is correct. Just send it to all 3.

The squeaky wheel gets the grease and the more people that send him emails and annoy him, the greater the chance that this will either get solved or it becomes very easy for us to get our money back from Infiniti under the lemon law by proving this is a widespread issue.

GoGo37, please post his email address on the forum you linked to and any others you're a member of.



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (tazdevl)
Posted by: GoGoG37 at 12:47 AM 2/17/2009

batmobile posts:

I had the same issue, only I heard the high pitch noise everytime I pressed the accelerator. Just a tap and I would hear the noise, i took it to the dealer 6 times ( I do not give up!) and finally had it fixed. It is the bose system that causes the issue, A bose rep came to the dealership and actually replaced all of my speakers (don't know if they are updated or not, but the back ones sound better) and now I do not have that noise. Maybe the speakers they used prior are not as good as the '09 models?"

Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (GoGoG37)
Posted by: tazdevl at 6:39 AM 2/17/2009

Naw I'm waiting to hear from Mark Igo's office to see if they're going to do anything for me. Don't hear by Friday, I'm filing under the lemon law. Been in 4 times or more for the issue and I have it documented that they heard it.

There are more reliable cars out there (actually all the problems I've had with my EX it should be a german car) and I have better things to do with my time than troubleshoot an issue that shouldn't be happening. In the end it's just a car.

I also don't want to support a company that takes my cash on the front end and refuses to step up when they're at fault.

I told them to pull the speakers the first time and they refused to do it.

Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (tazdevl)
Posted by: GoGoG37 at 8:34 AM 2/17/2009

you should forward him the link: http://myg37.com/forums/g37-se...49577

He should know that this is bigger problem.

They should pick the right vendors to use in the car.

Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (GoGoG37)
Posted by: tazdevl at 10:53 AM 2/17/2009

He's probably sick of hearing from me.



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (tazdevl)
Posted by: splautz at 12:58 AM 2/27/2009

The noise is high pitched and faint. Even if persistent I don't think I'd be too annoyed by it especially since my radio is nearly always on in the car. But if a comfirmed solution is found, I'd listen for it more, try to replicate it and get mine fixed too if possible. lol

The two "noises" I'm more concerned right now are:
1) A rubbing/grinding/groaning noise is sometimes momentarily heard/felt while making the first turn or two after first starting the car. After a turn or two, it doesn't happen again until turning the engine off for awhile. And it doesn't always happen.. And it seems to be happening less I think, so I'm hoping it's just part of the "break-in" of my new EX, which still has less than 2k miles on it.
2) I notice the engine makes more hot popping noises after turning it off than the other cars I've owned. Even when I stop the car and get out while the engine is idling, I can hear the popping. But while inside the cabin, the popping cannot be heard unless maybe I lower the windows and stop. It's the sound of the hot engine cooling.. but I'm just wondering if it's normal to have this much hot popping noise.. maybe a "breakin" issue too?



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (splautz)
Posted by: aft981 at 1:34 PM 2/28/2009

I must say, I'm not particularly happy with that response. When I drive without the radio on, the noise really annoys me.

Can I do anything else about this?



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (aft981)
Posted by: tazdevl at 9:53 AM 3/4/2009

Call Infiniti affairs and file a complaint. Phone number is in your owners manual. If they say they haven't heard anything about it, they're lying. EVERYONE be sure you do that.

Mine does it with the radio on or off and can be heard at highway speeds. More noticeable when the car is under load i.e. accelerating or maintaining speed up a gentle grade.

I forgot to mention my radio was replaced as part of the radio preset TSB... sound is still there. So not only have they done nothing to fix the problem, the simplest solution they could have done didn't fix the issue.

Modified by tazdevl at 7:10 PM 3/4/2009



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (tazdevl)
Posted by: CDBranom at 7:41 PM 3/5/2009

Sorry to hear about your problems ... make sure you document everything that's happened with names, dates, etc, as much as possible. Hopefully, the power of information sharing using NICO and the Internet will triumph in the end!

BTW, didn't someone report that once their Bose speaker was replaced, the noise went away?!?

Cheers,
David



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (dividedhighw)
Posted by: splautz at 12:53 AM 3/8/2009

They gave me a loaner EX35 when I had mine in for service and it too was making the ringing noise. So I agree it's probably happening with all of them. I was wondering too whether replacing the speaker (passenger side?) fixed the issue. If so, I'd go get mine replaced. maybe someone should try disconnecting that speaker just to confirm that is indeed where the noise is coming from.



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (splautz)
Posted by: BrokenTiller at 7:16 AM 3/8/2009

Disconnecting the speaker would seem to be a useful test, if that's easy enough to do.

However, I think it's being reported that this sound occurs whether or not you have the stereo on (at least that was my impression); if so, I wouldn't think the Balance control would impact it.

Just a thought,
David



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (dividedhighw)
Posted by: splautz at 8:40 PM 3/12/2009

Disagree completely. Driven some new ones at another dealership. Nary a noise.

Also if you read the link on the G37 forums, about half the people there have the noise.

One thing to note... going through my service records, my dealer made note that the cause of the noise may be the ECM. As others have mentioned as well... radio on/off doesn't make a difference. I've also noticed that it's louder with the headlights on.



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (tazdevl)
Posted by: MagicMan2000 at 11:29 AM 3/15/2009

I suspect that it is coming from behind the Nav Screen or perhaps the center channel speaker. I had someone else drive my EX while I crawled around the vehicle trying to geolocate the source of the high pitch and always came back to the center console. It sounds like it's coming from the top somewhere, but cannot be sure.

Taz, haven't noticed/tried with the headlights on to see if the noise gets louder, I'll let you know if I can replicate your finding. If so, perhaps the more electrical load is put on the system, the louder the noise gets...?

As usual, for the time being, it's more of the same that's got us looking like



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (MagicMan2000)
Posted by: RollerEx35 at 7:26 PM 3/16/2009

So thus far, we know the noise does exist.
Not all the time.
Not in every vehicle.

Someone up above mentioned their noise was cured when their Bose speakers were replaced. I'm going to put this out there, a quick poll of those who have the ringing noise and those who don't....do you or do you not have the Bose system.

My EX does have it, and I have the ringing.
The G37 loaner I had did not have the ringing, and didn't have a Bose system.
The EX loaner I had a few months ago did not have the Bose and didn't have the ringing.



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (aft981)
Posted by: sg77 at 12:42 AM 3/17/2009

I've also had the G35x loaner with no Bose system and no ringing noise...

Maybe we're onto something here?



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (MagicMan2000)
Posted by: mik3025 at 10:35 AM 3/19/2009

David



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (dividedhighw)
Posted by: CDBranom at 4:21 PM 3/24/2009

I've driven a loaner G35 that did not have the Bose and did not have the noise.

I REALLY hope you guys are on to something!! Although I still hear the noise when the radio is off. It doesn't sound like it's coming from the speakers - it's more like the center console area (behind the Nav screen). Is there a way to unplug the speakers, such as unplugging a fuse, to test this theory?



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (CDBranom)
Posted by: aft981 at 2:04 PM 3/25/2009

The other issue, as I've mentioned before, is that with age, we generally lose ability to hear higher frequencies. Interesting article:

http://saunderslog.com/2006/06...r-it/

Someone would have to do a test somehow to find what frequency the noise is that our cars are making, but there's a good chance it is in the 15+Khz range, which might be inaudible to people in their 40s+.

At the end of that article I linked to, are 4 pure sine wave recordings at 15, 16, 17 & 18Khz. I could hear them all, I'm 28. One of my colleagues in her 40s couldn't hear 16, 17 or 18Khz.

Again, clutching at straws, but this might be why some people can and some can't hear it.



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (aft981)
Posted by: sg77 at 11:00 PM 3/25/2009

Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (GoGoG37)
Posted by: bstroh at 2:31 PM 4/24/2009

I have a 2009 ex35 and heard the noise on the second day, like all of you i thought i was hearing things but the noise got louder and appears to be getting louder. I took it in to my dealer and apparently it is the fuel pump and infiniti has ordered a recall. So i should have mine replaced soon. Just to confirm it is exactly the same sound as all of you are hearing, and it appears to come from the back. The guy at infiniti said that the fuel pump is underneath the back right seat, if this is the case then it would explain why i can't hear it if i turn my head away from the back. I hope this helps, and i'm hoping to get it fixed next friday, i'll be sure to post the results.

cheers



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (bstroh)
Posted by: dividedhighw at 4:34 PM 4/24/2009

I had a noisy fuel pump that was replaced and it wasn't the high-pitched noise being described in this thread. Nevertheless, I hope your noise goes away when you get your fuel pump changed.

Please post again once that's been done to let us all know!

Cheers,
David



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (dividedhighw)
Posted by: bstroh at 8:25 AM 4/25/2009

I sure hope it's the fuel pump cause the noise is getting worse. I think it's the same as people here are describing it cause I've described the noise the exact same way. I spoke to an Infiniti tech guy and he said it had to do with one of the on board computers, it was the service manager who said fuel pump. I guess if it's not the pump (fingers crossed) then they'll have to look at the grounding for the wiring and computers. But one thing is for certain that sound has to go. I'll keep you posted.

Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!!
Posted by: SteveTheTech at 1:01 PM 4/26/2009

There have been instances of silicone collecting*(see note below) inside the heater core causing a bottle neck when flow is increased during acceleration. This can actually be resolved by back flushing the heater core. Fortunately there is a TSB that addresses this, on the few that I have seen the noise typically occurs at higher RPM range or >1/2 throttle take offs. There is a decent chance that you may be experiencing this, I have seen very few issues with the audio units, although many are replaced as a blanket fix (they do control almost all AV functions these days).

Although without driving your car it's only a blind guess. I'll try to get that bulletin number Monday. It is theoretically possible if the debris collect at another choke point and cause a variation in pitch or volume.

* NoteI know some of you will read that and be mad about it, the fact is the coolant circuit is very much like your circulatory system. A small amount of plaque moves and can cause a heart attack or stroke, in your car it can cause a noise.

I'm going to go back and re-read this thread as IMO the Burr-Brown/Bose setup is tuned correctly with a proper digital file produces one of the best full range audio experiences you can buy. I don't think I have seen the Stereophile article in a while. If you are using the radio (unless is SAT with a perfect reception) or and AUX input your output will only be as clean headphone output, unless you have a direct link using the Firewire cord, although I think using the CF with 4 gigs of your favorite music. MP3 format CDs work very well too for storing a larger amount of music. Then there is also the Music Box with the ability to hold 8 gigs (it's not enough for some, but it's something). Before throwing out the premium package you payed extra for try all the features, and spend some time tuning (although basic) to soot the needs of your music. I have had a few people come in with this complaint, and a few adjustments and understanding the design is a true 2.1 setup so the rear seat passengers will not hear it correctly.

Sound frequencies are very highly subjective as the above link illustrates. The ability for everyone's brain to process sound waves is never going to happen no matter how much research they do. The Bose units of the past are changing in extreme ways. For the people without the Audio Stage option there are limitations to the OE stereo system, but the audio unit cannot be removed or disabled without compromising several key tech features.



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (SteveTheTech)
Posted by: sg77 at 11:02 PM 4/26/2009

So, i had the fuel pump replaced today and it did not work, even though infiniti has recalled them due to this problem. The service people at my garage are great! They've been really helpful and are doing there best, so hats off to them. So we have all decided to keep at it until the problem is fixed. i'm taking my car in next week, and we'll go from there. Once we figure it out, i'll post the solution and hopefully it works for others. Good luck!



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (sg77)
Posted by: SteveTheTech at 7:21 PM 5/1/2009

bstroh~ I do not know what to tell you. I have replaced many of these in the past two + weeks with the updated part and have seen absolutely no issue. I would bring it back to the dealer and ask what the issue is. That is much easier than checking to see if has be replaced.



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (sg77)
Posted by: SteveTheTech at 10:34 AM 5/4/2009

EVer since this thread I have been paying close attention to all the EXs I've had come through my bay. I think I may have found one that makes the same noise as yours. This one exhibits the noise under the same conditions (partial throttle from a stop and low RPM range). I verified that was indeed the fuel pump (one of the only components on this car that emits such a frequency), I put the car in drive and lightly power braked it just enough to increase the command to an off idle level. At ~1200+ RPM you can hear a destinct change in the pitch as pump output is increased.

I would be willing to put money on this noise you have either being FP related or as I mentioned above a heater core being partially clogged.



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (SteveTheTech)
Posted by: RollerEx35 at 11:28 AM 5/4/2009

thanks Ron!



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (RollerEx35)
Posted by: tazdevl at 4:57 PM 5/4/2009

Steve, noise is electrical in nature, not mechanical. You can definitely tell the difference. Happens consistently when car is under acceleration.

Will let everyone know what the resolution turns out to be. Not sure why I'm bothering though, going back to Lexus. Probably to help y'all out.

I'm done with this car, Infiniti corporate and their lack of desire to resolve a problem that obviously spans platforms, is affecting a decent percentage of customers and all the other problems I've had with this damn car in 12 months of ownership.



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (bstroh)
Posted by: tazdevl at 4:58 PM 5/4/2009

Not the fuel pump.



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (RollerEx35)
Posted by: SteveTheTech at 6:44 PM 5/4/2009

The heater core noise is indeed coming from the center console area, the high frequency noise I mentioned to SG77 seems to be coming over the drivers ear, upon further inspection it's coming from the back seat. The heater core noise sounds like a lower pitched buzzing noise from the dash.

tazdevl~ I'm sorry to hear about your misfortunes with your EX. Consumer Affairs is usually pretty good about coming to a fair resolution to your concerns. Keep in mind all cars have their issues and Lexus is not immune from that. What went so wrong with your EX?



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (SteveTheTech)
Posted by: kamiguy at 11:14 AM 5/5/2009

Actually Infiniti Consumer Affairs was horrible to work with and has turned me off to the point that I may never buy one of their cars again. The chance of me recommending an Infiniti to a friend is also slim to none. Read a couple earlier posts and check out the responses others received.

Agree to a point, many cars have their problems, but I've owned a lot of cars that have been problem free for years. In the end, that isn't the issue. The issue is how customers are treated when they reach out for assistance. I've been pretty reasonable about the whole thing from the get-go... folks at the dealership didn't make the car and are just trying to fix it, folks at consumer affairs pretty much take the problem report and pass it along.

I had to get a lawyer and threaten to sue Infiniti for them to do the right thing and take care me. My car has been in the shop 5 times for this noise, which gives me a migraine and 5 times for other issues (all seats replaced, stereo replaced, fuel pump replaced, steering column replaced, ringing noise, and a couple others that I can't remember. FYI these were identified before they became TSBs. The headliner/driver's window rattle and the whole seat shifting under sudden braking and acceleration still has not been fixed after multiple trips. These issues occurred in the first 6 months of ownership. Totally unacceptable in a Japanese built luxury/near luxury automobile.

I work in product management/marketing and you cannot claim your car has the highest initial quality on your website then not take care of your customers when the vehicle they own doesn't meet that description. It just doesn't work that way.



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (tazdevl)
Posted by: SteveTheTech at 6:45 PM 5/5/2009

In either case I am staying as far away from that as possible. I wish you the best of luck and I hope you get the desired outcome.



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (kamiguy)
Posted by: SteveTheTech at 6:49 PM 5/5/2009

That's great to hear
There is a new internal component of the pump assembly that resolves the "priming" noise heard in the early models. You shouldn't have an issue with this again.



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (SteveTheTech)
Posted by: tazdevl at 1:13 AM 5/6/2009

Thx Steve. I work on product development in addition to downstream marketing and can tell you that if any of my customers have a problem, I do my damndest to get things resolved... I'm talking about pulling in material scientists, clinical experts, mechanical or electrical engineers.

Bottom line the number of things that have gone wrong and time the car has been out of my possession is entirely unacceptable. At 12 months, the car had 5K miles on it... if the car had 30K, I might be more understanding but I had to take it back for the first of many issues within 48 hours of taking possession and all the issues presented themselves in the first 6 months of ownership.

That's why there's a Lemon Law and I encourage everyone to use it where applicable to hold companies accountable, especially when an auto manuf is being unresponsive or you feel you should be compensated.

I do understand that a certain percentage of products fall outside the bell curve but those are the customers that need to be taken care of, not ignored. If Infiniti had stepped up and got me in another car or offered to buy the car back like I requested... I would be singing a different tune.

Let me put it this way... I think I would have had fewer problems with a German car.



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (SteveTheTech)
Posted by: RollerEx35 at 1:16 PM 5/6/2009

-when i start the vehicle for the first minute or so i can hear the noise.
-when i'm driving i hear the noise anytime the gas pedal is pressed, doesn't matter how much rpm's.
-while in park i can only hear the noise when i rev'd up the rpm's to about 1800 and up.

i have an appointment with the dealer on monday but the last time i took it in they couldn't hear it even when the tech rode with me.



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (RollerEx35)
Posted by: SteveTheTech at 5:24 PM 5/6/2009

The frequency at which this noise occurs cannot be heard by all people, and the in fact I was surprised I could hear the kid cell phone ring. I don't know what that says about me but after years of working in a load shop I was impressed. This is a really interesting problem as the people who are supposed to fix this may not actually be able to hear this noise. Interesting.

Good Luck.



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (SteveTheTech)
Posted by: RollerEx35 at 8:58 PM 5/6/2009

Ron



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (RollerEx35)
Posted by: SteveTheTech at 5:46 PM 5/7/2009

Quote, originally posted by SteveTheTech »

ask the tech to go into active test and cycle the fuel pump while sitting the car and lightly power braking the car. If the noise goes away while the pump is momentarily disabled than the pump is the culprit. You will only have a short amount of time <30sec of time before the engine starts to die to perform this test... For this I recommend leaving the car in gear with the parking brake applied, with the manual brake applied lightly depress the accelerator until the noise is heard.

I'll try this next time I bring my car in for service. I'm curious about a couple things:
Why do you suggest being in Drive with the brake on, instead of just being in Neutral or Park and revving the engine? To put more load on the engine?
And when you say "cycle the fuel pump", do you mean the tech will turn it on/off/on/off.. quickly, or turn it off for up to 30 seconds? Is there any risk of damaging the car by doing this?



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (sg77)
Posted by: SteveTheTech at 5:34 AM 5/8/2009

Quote, originally posted by sg77 »

And when you say "cycle the fuel pump", do you mean the tech will turn it on/off/on/off.. quickly, or turn it off for up to 30 seconds? Is there any risk of damaging the car by doing this?

There is an active test using the dealer computer that will cut the ground signal to the fuel pump, if you were to just disconnect the pump assembly it will trip a DTC as the pump circuit, fuel level sensor, and fuel temp sensor are al routed through one connector and they run detectable circuits. The reason I mentioned to perform this test for <30 seconds is primarily due to the fact that while the engine is loaded fuel demand increases so the engine will stall once the fuel that is in the line is used. This will not damage the engine (if performed correctly) and is an invaluable tool for diagnosing some noises.

That is however only really usefully if you know that the noise is coming from behind the driver. As RollerEX mentioned he knows that his noise is eminating from the dash somewhere. This is the "fun" part of tracking down sqeeks rattles, and noises, finding their point of origin then seeing what needs to be done to fix it.



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (SteveTheTech)
Posted by: tazdevl at 3:21 PM 5/8/2009

Funny... even though I had my steering column and fuel pump replaced before there ever was a TSB or recall... have to do it again. Oh well. Back to the dealer which seems to be par for the course for my EX35 ownership experience.

I'll let y'all know if another solution pops up when they look at it again, though I'm hoping I'll be in another car before that happens.



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (SteveTheTech)
Posted by: aft981 at 11:40 AM 5/9/2009

My line of thinking was if its something to do with the speakers, we need to isolate the speakers somehow....I don't know why I didn't think earlier, I just yanked the 15A fuse for the Audio. This has the effect of not just audio, but the whole center console stopped working. No nav, the main screen didnt work, the a/c controls didnt work, nothing around there.

And yes....the noise was still there!

Back to the drawing board.



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (SteveTheTech)
Posted by: RollerEx35 at 12:02 PM 5/9/2009

this might be stupid question but does the climate control have to be on for it to be a noise coming from the heater core?

its really hard for me to tell but the noise could be coming from the glove box area but its def coming from the center to front right of the dash...is there anything near the glove box that could make this noise? any kind of amplifier?



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (aft981)
Posted by: SteveTheTech at 2:15 PM 5/9/2009

There are a few things you can derive from your test.
-First off it's not an accessory
-Second blown speaker coil or failed amplifier.

There is actually a high frequency self test you can perform in the Confirmation and Adjustments menu (under speaker test). This is actually a great test it uses a high frequency tone to verify that all the speakers are working.

I have a feeling that your noise might be something different. You may have a fuel pump issue.

Quote, originally posted by RollerEx35 »

this might be stupid question but does the climate control have to be on for it to be a noise coming from the heater core?

No, we encourage all questions here
What causes the noise that I was describing is an issue in the coolant circuit so there is nothing that can rule that out short of blocking the inlet hose (passenger side of the fire wall, using a long pair of needle nose pliers)

Quote, originally posted by RollerEx35 »

its really hard for me to tell but the noise could be coming from the glove box area but its def coming from the center to front right of the dash...is there anything near the glove box that could make this noise? any kind of amplifier?

There are several things that have the potential, if you can find a function that effects the noise that will point you in the correct direction.

Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (SteveTheTech)
Posted by: RollerEx35 at 1:06 PM 5/11/2009

It drives me nuts to see you guys getting frustrated over things like noises and the such. I wish I could help you more but without being able to hear it first hand. As we were talking about before if it is indeed a frequency that is on the higher end of our listening spectrum.

Not to make excuses but;
Allot of technicians have limited hearing due to hears of working in a large noisy shop for years has decreased their hearing capabilities. If you can take a ride with the manager once you find a way to consistently reproduce the noise it will make it easier to show others.

I have seen the exact thing happen in my shop where an audio engineer complained of a noise several others could not hear.



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (SteveTheTech)
Posted by: RollerEx35 at 3:35 PM 5/11/2009

StevetheTech ~ you've been very helpful and I understand certain frequencies aren't heard by everyone, i just wish they tried a little harder to find out what i'm hearing.



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (RollerEx35)
Posted by: SteveTheTech at 3:58 PM 5/11/2009

When technicians call Infiniti tech assistance we are supposed to call back an close the file, but in all honesty I have only done that once and I think it is 1 more than anyone I know. The system is flawed and is in need of an overhaul but it does work, if the technician and the service writer take the initiative to follow through.

We can speculate for days (using this thread as an example ) on what the noise could be. Without knowing exactly where it is coming from there isn't much that can be done with this, and you should not have to diagnose this yourself that is what warranty is for.

Being able to replicate the noise is one of the most difficult task we (as technicians) face is adapting our personal driving style to yours (as an owner) to get whatever is happening to happen. Some noises are only present while using a feather touch on the gas while the car is in overdrive at its lowest speed (43mph), personally even when I am driving "normally" the car is still in third gear at 50. If you get the car back without a satisfactory diagnosis we may be able to try a few things.

Stay positive.



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (SteveTheTech)
Posted by: aft981 at 5:22 PM 5/11/2009

However, it IS annoying, but what can we do?

My loaner this time is a G37x. It also makes the noise, BUT under slightly different circumstances. First of all, it doesn't have Bose, or Nav, its a bog standard G. However, this one makes the noise whether your foot is on or off the accelerator, so long as the engine is revving at more than 1,000RPM. If you coast up to a set of traffic lights, with your foot on neither the gas or the brake, gradually slowing down, it continues making the noise, until you slow right down, and the RPM drops below 1,000. As you accelerate away from the lights again, no noise until the RPM gets above about 1200 and then its there.

This is different to the EX in that on the EX tapping the accelerator, regardless of the RPM has the effect of producing the noise.

Just thought I'd share that one.



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (aft981)
Posted by: SteveTheTech at 5:34 PM 5/11/2009

Loaner cars are usually base Gs due to the fact that the dealer has to lease them from Infiniti and people often abuse them to astonishing levels in their ~1.5 years of normal service. Some dealers use different models to give owners an opportunity to try other models but many go with a special stripped model G that still retails somewhere in the mid thirties, despite being bare bones they still have the same power plant and drivetrain that is common throughout the whole model line.




Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (SteveTheTech)
Posted by: sg77 at 8:28 PM 5/11/2009

SG77 ~ i bought my car in august 08 and have taken it into service a few times since then and they have never replaced the fuel pump because it was never an issue but i took my car in yesterday for a few things including this high-pitched noise (that they couldn't fix), but this time they replaced my fuel pump even though that wasn't one of my problems so looks like there is a newer part and they are checking them as they come in.

fyi, my loaner g35 doesn't have the noise.



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (RollerEx35)
Posted by: RollerEx35 at 1:22 PM 5/12/2009

I'm about done with the car and am either special ordering a 2010 RX350 or a LX570.

Even though the noise has not been resolved, Infiniti corporate refuses to do anything because the dealer put down that the ECM was the source of the noise and they did a couple things to supposedly take care of the issue. While I have the resources to pursue a breach of contract suit, I just don't care anymore and refuse to spend any more time on this. The likelihood of me buying a Infiniti/Nissan product in the future is slim based on the way this whole situation has been handled.

My advice for those of you who plan on keeping the car... keep taking it in and have them look at the car for the issue. Be sure it is noted on your repair orders.

Once you meet the requisite number of instances to qualify for the lemon law in your state, go online, find a free lemon law lawyer, check them out with the state bar to be sure they do not have any complaints or disciplinary actions, retain them and sue Infiniti. I sued them, they settled and I walked away with some money. Took about two hours of my time.

In your complaint and demand letter, you could include things like the fact that the source of this issue has not been identified which presents a safety risk for you and your passengers, it could be an indication that a critical function of the car is compromised and could result in a failure or fire(can't be refuted because no one knows the source), it spans multiple platforms (EX, G Coupe, G Sedan) and the number of times the car has been in the shop is not consistent with the advertised, claimed and perceived quality of the brand.

Maybe if enough people sue Infiniti, they will step up their game and actually fix this issue instead of blowing it off.

Your other option is to email Mark Igo to complain. He is the GM of Infiniti USA and can be reached at one or all of the following email addresses:

mark.igo@infiniti.com
mark.igo@nissan-usa.com
mark.igo@infinitiusa.com

Funny enough... took the car in today for the two recall items and the noise is even worse in the G37 loaner I drove.



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (tazdevl)
Posted by: echo999 at 10:49 AM 5/22/2009

My only contibution to the thread is that I find the intensity of the tone is worse with the climate control ON. The radio makes no difference.

On a side note I've also started noticing a lot of rattles on the passenger side and under heavy acceleartion it sounds like the exhaust is about to fall off. I hope I didn't buy a total lemon.

I'm taking it in for service so we'll see if the Canadian Infiniti dealerships have worse or better hearing than our USA cousins.


Modified by echo999 at 5:01 PM 5/22/2009



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (echo999)
Posted by: dividedhighw at 12:56 PM 5/22/2009

Good luck - keep us posted!

Cheers,
David



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (echo999)
Posted by: cjre1 at 3:25 PM 5/22/2009

When did you buy your EX and what model do you have? AWD I take it???

I think that I am finding a link here between some items that I am doing much research on.



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (cjre1)
Posted by: echo999 at 5:10 PM 5/22/2009

Has anyone noticed that if you put the car in the ON position and go around to the passanger front side there is a really high pitched sound similar to what you hear inside the car. I can only hear it in the ON position not when the car is running and no sound in the ACC position.



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (echo999)
Posted by: cjre1 at 5:20 PM 5/22/2009

Please let us all know what the dealer finds out.



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (echo999)
Posted by: sg77 at 3:29 AM 5/23/2009

Something else I noticed when walking around the car outside is that when the camera is on and the sonar is beeping, you can hear it outside. It seems like there's actually speakers on the outside of the car, I guess to warn people that you might back up soon.



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (sg77)
Posted by: cjre1 at 9:28 AM 5/23/2009

I am thinking that since the system is drive by wire, it might make some noise in that area. I am not sure. I did not research this yet. I can this weekend.



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (cjre1)
Posted by: RollerEx35 at 10:06 AM 6/8/2009

Thanks
Ron



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (RollerEx35)
Posted by: cjre1 at 10:25 AM 6/8/2009

Thanks Ron. Well that blows my theory out of the water with the temp change. The drive by wire system, should have no bearing on the weather. I am not sure what noise you are refering to. I need to think about this one. Maybe someone else will know.
Anyone???



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (RollerEx35)
Posted by: sg77 at 4:18 PM 6/8/2009

I think it means you have your windows down and the music up, hence you can't hear it anymore?!



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (echo999)
Posted by: echo999 at 4:51 PM 6/8/2009

So I took those sample wav files posted earlier and I played back the 15,000Khz wav file converted to mp3 from the CF Card and he can hear that even at the lowest volume setting. So why in heck he can't hear the real sound is beyond me since I think they sound nearly the same.

I've accepted this sound will never be fixed since only 0.1% percent of the entire human population has hearing good enough to hear it so why would Infiniti invest time and money to fix a problem that only a handle full of owners can even hear. I'm now wearing an earplug in my right ear whenever I drive my car. It works and its about as cheap of a solution as I can find (short of ripping the dashboard apart and finding the sound myself).

One thing I have noticed is that if I sit in the passenger seat and have someone else drive the sound is 2-3 times louder if you listen into the glove box vs the foot compartment. I'm certain this sound is coming from somewhere behind the dashboard and not the door speaker; or any speaker for that matter.



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (aft981)
Posted by: echo999 at 4:54 PM 6/8/2009

maybe i'll just move to somewhere warmer then

thanks guys but when the weather was much cooler i heard the noise much louder even with the radio on and the heat on....




Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (RollerEx35)
Posted by: cjre1 at 11:20 AM 6/9/2009

There is not much behind the glove box. Maybe the heater core, fan blower motor or even the Expansion Valve valve is making this noise. I had a Lexus that the EVAP valve was making this noise. Once changed, the noise was all gone.

I can't think of anything else that would make a noise back there.

Good luck. Let us know what the dealer finds, if you take it there.

EDIT: Expansion Valve not EVAP.

Modified by cjre1 at 10:05 AM 6/10/2009



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (cjre1)
Posted by: RollerEx35 at 8:20 AM 6/10/2009

Thanks
Ron



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (RollerEx35)
Posted by: cjre1 at 10:04 AM 6/10/2009

I meant to tell you about the Expansion Valve, is a valve that controls the AC compressor in simple terms. It is a complicated process. It is the EV or the Orifice Tube that makes the noise.

I have my valve replaced and the noise went away, however, your car is too new to be this, unless if dirt is in the line or the vavle is bad. I have seen this if the Freon is low, this valve will also make a noise as you described.



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (cjre1)
Posted by: RollerEx35 at 9:39 PM 6/10/2009

thanks again



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (RollerEx35)
Posted by: cjre1 at 8:52 AM 6/11/2009

Let me know what they find out. It can be a simple problem or a complex problem. They might not even duplicate the problem. Those are the dealer famous words, ask anyone. "Can not duplicate customer concern". I love to see those on the service records.



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (aft981)
Posted by: echo999 at 4:59 PM 6/15/2009

If the noise is determined to be coming from the ECM and you can hear that and the G37 is even worse. I am at a loss as to which part of the IC within the ECM is causing the noise. Since you have driven a completely different car and it exhibited the same concern to you. I would love to hear your EX, to see just what you are hearing. Are you positive that the noise you are hearing is in the 15kHz range? That seems pretty low for the amount of people that have listened to it.

A Lexus may be the way to go if a silent numb ride is what you were looking for.

Although the interior squeak and rattle wise is pretty quite there are engine noises and depending on the road surface some transference of road noise through the sport inspired steering rack and suspension setup. There are a few <5 noises that have been prevalent noises that have warranted the attention of a technical service bulletin.

While your case is rare and one of the first I have seen escalate to this point I would again like to stress that a noise that cannot be heard by the majority of diagnosticians and managers involved in your case, will not cause your EX to burn or fail. You may say that that statement cannot be proven but at this point it is speculation in either case. I understand your frustration and throwing in some key words should get you the shock value you were going for. While I appreciate you sharing your negative experiences with us and I feel for the unique set of circumstances you are dealing with I want to stress to the other owners that your EX is not going to spontaneously combust or have a wheel fall off.

If there were a way I could personally change your perception of this car I would do it. I fear that you have already gone beyond the point of no return.

To address noises in general.
As a group, and with a few exceptions, we try to fix all types of noises whether they are originating from the engine or interior. There is no training or advise that can really be given to teach someone how to trace down a noise. This is really a matter of individual perception and not a learned skill. There have been times where I have had to spend a few hours with an owner hunting for noises, we try one thing, road test, try something else road testing, and that is being able to hear the noise. If the investigating bodies cannot hear the noise and do not have access to the appropriate acoustic research devices. It is really humbling to people like me who are used to getting noises in the first two tries. Noises are the single most difficult thing to describe adequately to another person in enough detail that the third party can write down well enough for a technician to decipher. Given the extended game of telephone that takes place in the chain of communication within any dealerships' service department the odds are not so good that a unique noise may be resolved the first time.

Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (SteveTheTech)
Posted by: Poyzinous at 7:43 PM 6/15/2009

You have to remember... this isn't a pet project where it's OK for customers to have to keep going back to the dealer to have issues identified and resolved. It's a car and while it isn't at a high price point, if Infiniti is saying it's #1 in satisfaction in its class on the site and my car is an outlier, I'm going to call them on it and make them fix the issue until the law provides me with another alternative.

My guess all the people here are hearing the same issue and yes... it's a higher pitch/freq which means the noise is directional and explains why it cannot be heard if someone is sitting in the passenger seat. It isn't the fuel pump. It's something electrical in nature...the fuel pump delivers the same amount of fuel regardless of engine speed so that wouldn't be affected if the car was accelerating. This has more to do and sounds like an electrical circuit is loading when the car is accelerating.

The other reason why I took it upon myself to sue Infiniti was due to the lack of response from them for an issue that's being reported across multiple platforms. This could be something as simple as the speakers (dealer didn't want to try replacing because they didn't want to take the door panels off) or more complex like a grounding issue... which I had with a 2004 FX45. Lot of folks bought grounding kits back in the day for the FX due to a similar issue. So maybe this is more of a design flaw with Infiniti's in general.

In the end... I wish I didn't have the problems I did... I wanted to like this car but it's been a complete pain in the a** to own.

Numb ride etc... are typical fanboi responses and you should be above it. I buy good cars, I hoped this was one and for me it wasn't. Lexus builds a great car and plenty of info out there supporting that statement.

BTW I'm balancing my Lexus' numb ride with a 2009 M3 Sedan (since I need the back seat space for an infant seat which the EX clearly didn't have).



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (sg77)
Posted by: sg77 at 6:00 AM 8/13/2009

Edited by moderator, no links to that place.

Someone posted there 7/10/2009 "tech line says that they (Inf) have received multiple calls about the issue, and that it is a noise introduced by the ECM and that they ARE working on a fix, and that it should be out within 3 weeks."

He later said that there's a temp fix... "They will apparently wrap the ECU in some sort of noise-deadening insulation", but the TSB with a better fix isn't out yet.

I also saw reports of a whistling sound on Muranos: http://forums.nicoclub.com/zerothread/334667 that they say was fixed by TSB NTB08104 related to the "throttle control actuator". I'm not sure if that's the same noise we're hearing though.



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (sg77)
Posted by: echo999 at 6:39 PM 8/14/2009

Quote, originally posted by sg77 »

A lot of people are reporting this problem on the G37: Edited by moderator, no links to that place. Someone posted there 7/10/2009 "tech line says that they (Inf) have received multiple calls about the issue, and that it is a noise introduced by the ECM and that they ARE working on a fix, and that it should be out within 3 weeks." He later said that there's a temp fix... "They will apparently wrap the ECU in some sort of noise-deadening insulation", but the TSB with a better fix isn't out yet. I also saw reports of a whistling sound on Muranos: http://forums.nicoclub.com/zerothread/334667 that they say was fixed by TSB NTB08104 related to the "throttle control actuator". I'm not sure if that's the same noise we're hearing though.

Any news on a TSB yet from Infiniti. I'm taking my car in for routine service and my dealer keeps asking me to bring whatever news I hear about this forum.



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (echo999)
Posted by: sinbinner at 3:47 PM 8/27/2009

For the record: I hear the noise coming from the front passenger side, virtually at all times, regardless of what may be turned on or off (a/c, stereo, cruise, etc.). I can hear it when revving the engine in neutral, and I can hear it even when coasting without touching the accellerator. When the engine is warm, the sound mostly goes away when the car is at rest (I originally thought I only heard it while the car was in motion, leading me to think it was mechanically related to the front passenger wheel); at first start-up in the morning, however, it is quite loud when revving in neutral.

Fortunately, I leave the sound system on most of the time, so I can't hear it, but sometimes I want silence and this is worse than finger nails on a chalkboard!

Hopefully we get relief soon -- anyone?



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (sinbinner)
Posted by: SteveTheTech at 6:23 PM 8/27/2009

http://www.cbsnews.com/stories...shtml

or http://www.noiseaddicts.com/20...nager/

My girlfriend just got a 2009 EX AWD with nav/bose and it's driving her crazy; she says it sounds like the tone on these links. She can hear it in my 09 G37 too. I can't hear it in either car but can hear these tones.

The dealer has the car now and can't hear a thing. While I'm not optimistic, I appreciate everyone's comments on these threads and will be sure to follow up with any progress.



Post Title: Re: You guys are not alone on this High-Pitch/Frequency Noise!! (CuthGood130)
Posted by: sg77 at 10:41 PM 9/1/2009

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