High pitched noise

[YAC]

My wife just bought a new G37x sedan. Right now it has been driven 800 miles. She is noticing a very high pitched noise when driving. We can't seem to locate it. Has anyone noticed or experienced a similiar problem? She really likes the car but---

[Joey666Crack]

I think your car has unfoundturbo syndrome.

Or actually, I kind of hear like a high frequency sound coming from inside my car sometimes, it sounds like something electronic but it's now since gone away on it's own

[telcoman]

My wife just bought a new G37x sedan. Right now it has been driven 800 miles. She is noticing a very high pitched noise when driving. We can't seem to locate it. Has anyone noticed or experienced a similiar problem? She really likes the car but---

Take it back to the dealer

Telcoman

[Poyzinous]

Invisible turbo syndrome Uuuuh, I've heard of this in the EX, but some people don't hear its because its like a 20hz sound frequency that most adult humans can't detect... so its difficult.

[Sentientbydesign]

Invisible turbo syndrome Uuuuh, I've heard of this in the EX, but some people don't hear its because its like a 20hz sound frequency that most adult humans can't detect... so its difficult.

I have something kind of like this, but only between 75-80MPH and only in 6th. It bugs the crap out of me. I can hear it. My wife can hear it, but the techs and service manager couldn't hear it.

Doesn't help that the freeway near the dealership is plagued with CALTRANS-itis. Tire noise drowns out just about anything else including conversation.

[rmjcvelez]

I too have noticed a high pitched noise within the cabin of my 09-g37 sedan. I've taken my car back to the dealership twice and they don't hear the noise. I've got the technology package w/ the Bose sound system and have been wondering if it's related to Electromagnetic interference.

I'm going to troubleshoot this weekend and will report back...

[YAC]

Thanks,We have the premium and the navigation. The car goes in Thursday. I'll let you know what the outcome is. Hopefully someone will find something.

[YAC]

My wife was contacted by the dealer today. The technician did hear the noise. Now they have to find out what and where it is. I'll let you know of further developments.

[MR-STANG]

I also have a strange noise in my 09 G37X with 2,300 miles. It sounds like a high-pitch humming while driving. Taking it to the dealer next week.

[YAC]

The dealer called my wife this afternoon. They think they know where the problem is, but Infiniti will not approve the warranty claim. The service manager is going to talk to an Infiniti service rep next. I called back later for more specifics but the service manager had gone for the day. I'll keep everyone informed as this progresses.

[G_whizz]

Please keep us in the loop...Good luck!

[YAC]

We didn't hear from the dealer today, but I did talk to him on Wednesday. They think it is a high frequency noise from the engine controller. They were going to contact a rep and go from there. I neglected to mention, the loaner they gave my wife has the same noise.

[Joey666Crack]

Maybe you two are super human, or half dog half man, and it's acting like a dog whistle you know?

[YAC]

Maybe you two are super human, or half dog half man, and it's acting like a dog whistle you know?

Clever!

Apparently someone at Infiniti is familiar with the noise and we are waiting for more information on when a new Engine Control Module will be available. Since the loaner also has a problem we're going to take her G37 back until the fix arrives. She has been wearing ear plugs and will continue to do so until it is fixed or we need to take other action.I guess now we'll see how good Infiniti's Customer Service is.

[dbG37s]

I have the same issue and my car is 3 days old. It only happens at speeds of over 60 mph. I found that if my HVAC is on recirculate it doesnt happen. If the HVAC is bringing air from outside it makes the noise. Its a very high pitched whine that almost sounds like some kind of interference.

[YAC]

Is it that it doesn't occur in recirculate mode or is it that you're blocking the noise as well as the outside air?We tried all of the different air flow combinations. Our noise is constant.

[dbG37s]

Mine will stop the high pitch whine when I place it in recirculation mode. If Im bringing air from outside it is unbearable.

I took the service guy for a ride and showed him. He said he didnt have a clue as to how to fix this issue. He told me he would call to set up an appointment in the future after he speaks with Infiniti.

[YAC]

Our noise doesn't seem to be related to the ventilation system.Infiniti is aware of our problem and supposedly a fix is coming. They say a new Engine Control Module is in the works. In the meantime my wife wears earplugs whenever she is in the car.Good luck with your problem. Let me know if you get any other information or if your tech finds answer.

[DRebillard]

I have endured that ringing sound for some time now and always thought it came from the fuel pump, but I recently noticed that it was coming from the engine compartment so I crawled right in there to locate it. As a result, I determined that it was definitely, definitely, no question about it, coming from the throttle control module, which is that finned item attached to the intake plenum (makes sense), mounted very close to the firewall. The fact that it is finned is an indication that it requires cooling, which in turn means that there is a significant current flowing through it. I'm thinking that there must be an internal transformer component to it (the TCM), and as many people can tell you, transformers and ballasts are very bad for developing this high pitched ringing. In fact, my brother had his TV in the shop 3 times for this before they identified the source of the ringing, that being the transformer. The cost for the replacement part (in Canada) is $224.95. If you want to verify that this is indeed the problem with your car, just get right in there and press your left ear up against the TCM, taking steps to prevent your belt/buttons from scratching the paint (you have to get right in there and sort of lay your upper body on the engine cover with your right shoulder pressed up against the hood). What I found with mine is that the ringing can be temporarily silenced by applying pressure to the TCM with ones thumb. It was noted in an earlier post that the ringing is more audible when taking in outside air as opposed to recirculating, which serves as further proof that it is eninating from the engine compartment.
Modified by DRebillard at 2:48 PM 2/6/2010

[YAC]

We have been waiting since December for the updated module to be shipped from Japan. It's finally in and is to be installed on Tuesday. I will let you know if this does solve the problem.

[Joey666Crack]

That's a pretty extensive wait, hope it's worth while for you.

[motobonsai]

I am thinking about buying a g37. Is this high pitched noise a problem still?

Are there any other issues I should know before I make my decision?

[YAC]

The part replaced was an Engine Control Module. It seems to have solved the problem. All new g37's are receiving the new part. We personally have not had any other issues. Once we finally had the problem solved the car has been great.

[motobonsai]

Thanks very much for following up.

I appreciate the help.

I am a new owner now I pick my g37x up sometime next week.