2011 m 56 with loud ac compressor

[Frog]

I have a 2011 m56 and at a stop the ac compressor makes a low noise. Anyone else with this issue? The dealer put a new compressor in and said the noise is less but still there. They contacted infiniti, they said there is a sound insulating bracket they will replace on Wednesday. I will let u know if that fixes the prob.

I hope I can help some one if they have the same problem. I'll keep u all posted

On a side note they finally flashed the transmission to the new version. I never had a problem with the last one. But I will report if I like it better or not!

[svard75]

Low noise as in audible noises or feeling rumbling? A bracket would only address the feeling rumbling transmission noises. If your noises are audible I would say the mixture of coolant to oil is not correct and your AC will burn out. http://www.ehow.com/how_4868957_trouble ... essor.html

[InfinitiM56S]

I have a same noise on my 2011 M56S. They replaced AC compressor but did not fix the problem so they blame on the Stillen Exhaust package I installed on my vehicle cause the humbling noise. Please let me know if they can fix your car.

[Frog]

Tell them Infiniti has a service bulletin that directs them to install a sound insulting updated bracket.

Yes the sound is gone. Just to be clear u could only hear the noise when at idle

[TheMajesticKing]

I definitely need to get them to address mine. My last M56 had a loud compressor and my new one is even louder. smh

[InfinitiM56S]

Just wanted to let you all know that after the dealer installed a sound insulting updated bracket the humbling noise whenever the AC is on when away. I am very happy that they finally fix the problem that had been bother me for the last 2 years and no Infiniti dealers in my state able to fix it.

[wideopn11]

That's great. Did they do it under warranty/service bulletin? Does the service bulletin only mention the M56 or is it both M56 and M37?

[InfinitiM56S]

they did it under service warranty per technical bulletin. I do not know for sure about M37 but you should ask if you have a same noise on your vehicle.

[Pimperish1]

I've had the same issue with mine since I bought it. Told the dealer about it and that's as far as that went. I try not to run the A/C unnecessarily anyway. Seems to just be a " thing" with the car.

[Frog]

Get it fixed. Way better. On a 60k $ car. Fix it they fixed mine for free

[Debonair]

I wonder where this bracket goes? From what I can tell the compressor bolts directly to the block on both the M56 and M37.

[Mjkkb2]

There is as service bulletin for loud compressor. ITB13021.
It applies to both 37 and 56.

[Debonair]

There is as service bulletin for loud compressor. ITB13021.
It applies to both 37 and 56.

Yeah Google found that for me too real fast. I will try to get a copy of it tomorrow so I can see the details.

[NoTalentLoser]

Can someone describe the sound? Does it sound like the defogger coming on randomly?

[Frog]

It only makes the sound when the ac is on. If you still hear your sound with the ac off then that's not it. And u can only hear it when the car is stopped. It a low like hum/vib

[billruday]

My M56 has the same issue. Were you able to get it done out of warranty?

[adeedpb]

I don't know if it is the same bulletin but I had mine fixed under a bulletin for the AC compressor line. The line vibrates when the AC is on and makes a loud noise like a noisy compressor. The fix replaces the molding and clips where the AC line is held in place so that it does not make noise when it vibrates. I will try to dig up the paperwork I had on it.

[lovemycarM35]

what noise are guys talking about I hear a slit buzzing noise from the AC, but it's,not that loud. I know my 07 M35 was much louder then that, and my AC is ice cold so im not worried

[Dmix]

I have the same problem. Out of warranty and the dealer wants $800 to fix it

[DFW2011M56S]

I have the same problem. Out of warranty and the dealer wants $800 to fix it

When I got my M56 I noticed it had a loud compressor, when it first started getting over 100°F here, I noticed it seemed to take too long to cool down and would not cool at idle. I ended up recovering the refrigerant in the system and it was less than 1/2 charged. I vacuumed it for about 10 minutes to make sure I had all the refrigerant out of it. I added 2 oz of compressor oil. Then charged to capacity. Compressor noise was instantly about 1/3 of what it had been. A/C is ICE cold, even at idle. MUCH colder than the 2016 Q50 I was driving as a loaner. My 2012 and 2014 Titans were both undercharged after having them less than 6 months. Makes me wonder if they ship them out of the factory undercharged because 90% of the people in the US won't experience high heat or humidity and their systems work acceptably.

[Dmix]

I have the same problem. Out of warranty and the dealer wants $800 to fix it

When I got my M56 I noticed it had a loud compressor, when it first started getting over 100°F here, I noticed it seemed to take too long to cool down and would not cool at idle. I ended up recovering the refrigerant in the system and it was less than 1/2 charged. I vacuumed it for about 10 minutes to make sure I had all the refrigerant out of it. I added 2 oz of compressor oil. Then charged to capacity. Compressor noise was instantly about 1/3 of what it had been. A/C is ICE cold, even at idle. MUCH colder than the 2016 Q50 I was driving as a loaner. My 2012 and 2014 Titans were both undercharged after having them less than 6 months. Makes me wonder if they ship them out of the factory undercharged because 90% of the people in the US won't experience high heat or humidity and their systems work acceptably.

Hmmmm I don't know how to do that myself but I will get the dealer to recharge it. Thank you.

[DFW2011M56S]

When I got my M56 I noticed it had a loud compressor, when it first started getting over 100°F here, I noticed it seemed to take too long to cool down and would not cool at idle. I ended up recovering the refrigerant in the system and it was less than 1/2 charged. I vacuumed it for about 10 minutes to make sure I had all the refrigerant out of it. I added 2 oz of compressor oil. Then charged to capacity. Compressor noise was instantly about 1/3 of what it had been. A/C is ICE cold, even at idle. MUCH colder than the 2016 Q50 I was driving as a loaner. My 2012 and 2014 Titans were both undercharged after having them less than 6 months. Makes me wonder if they ship them out of the factory undercharged because 90% of the people in the US won't experience high heat or humidity and their systems work acceptably.

Hmmmm I don't know how to do that myself but I will get the dealer to recharge it. Thank you.

I work at a Nissan dealer in the parts dept and started life on the service side as a tech. It takes a refridgerant recovery machine to do this(~$4,500). I have the tool access and knowledge to just do it myself. It is actually the first step of the A/C compressor noise TSB as well.

[Dmix]

Hmmmm I don't know how to do that myself but I will get the dealer to recharge it. Thank you.

I work at a Nissan dealer in the parts dept and started life on the service side as a tech. It takes a refridgerant recovery machine to do this(~$4,500). I have the tool access and knowledge to just do it myself. It is actually the first step of the A/C compressor noise TSB as well.

Well damn lol. I'll get it done. Thanks

[Dmix]

I can't really update on this cause when I got the timing chain recall done they broke my ac compressor and gave me a new one. The noise is now a lot quieter and only noticeable when you are really trying to hear it. Thank you for the help anyways.

[CRV_33]

Damnit i am noticing this on my 2011 M56x as of late. Even on a cold start and the A/C is turned off, I can hear a high pitch for the first 5 seconds and disappear. I can replicate the sound when I turn on my A/C. I doubt the factory powertrain warranty will cover this.

[Pimperish1]

The dealer fixed mine per the service bulletin at no cost cause I complained to Infiniti corporate and they were able to verify in the service records where I complained about it soon after buying the car and the dealer blew me off wit the "unable to replicate" BS.