High pitch noise coming from passenger side
I picked up a new 370z for my fiancé as a wedding gift and the car has 200 miles on it. Now when the car is on and you are idle you can't hear it, but if you are driving or if you just rev it up in neutral you hear this high pitch noise. It sounds like a dog whistle and it gives us a painful headache every time we drive the car. We have already turned off all radio, navigation, etc and it still happens. We put our ears to the speakers and it is not coming from them, but from the electronics under the glove box. I took it into Nissan and they are at a complete loss as to what it is or how to fix it. A Nissan guy has flew in and he has no idea either and have never heard of this. Their solution is 'turn the radio up' but that’s ********, I didn't spend $40k on a car to have to crank the radio up to hide a high pitch noise.
Has anyone had this or heard of this? We are meeting with an attorney to discuss suing Nissan over this since we cannot drive the car; it’s a very high pitch brain splitting noise. We have it documented by multiple service guys and the Nissan guy who flew in. |
What are the lemon laws in your state? I would explore that and if can not be repaired they should provide you with another vehicle.
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I am in California and when I looked it up this is what it staes:
(1) The same problem results in a condition that is likely to cause death or serious bodily injury if the vehicle is driven and the problem has been subject to repair two or more times by the manufacturer or its agents, and the buyer or lessee has at least once directly notified the manufacturer of the need for the repair of the problem as provided in the warranty or owner's manual or (2) The same problem has been subject to repair four or more times by the manufacturer or its agents and the buyer has at least once directly notified the manufacturer of the need for the repair of the problem as provided in the warranty or owner's manual or (3) The vehicle is out of service because of the repair of any number of problems by the manufacturer or its agents for a cumulative total of more than 30 days since delivery of the vehicle. So my guess is I need to take it in 3 more times. Problem is no repair can be made since they have no idea what is causing it. |
That is exactly what I would do. Keep us posted on your progress and the best of luck.
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start documenting everything and shoot for that lemon law if they don't get it fixed. thats what that law is for. I feel for you having to go through this after buying a brand new car. Good Luck! |
Holy crap. I was talking to my dealer about this EXACT same problem yesterday. Two different mechanics rode with me in my car, and neither of them could hear it. They didn't dispute the noise (they admitted that their hearing could just be poor at that freq), but neither did they have an answer.
I left saying I'd investigate on the message boards today, but that I'd be in touch. It sounds like a whine typical of a bad voltage regulator or ground, but unlike that it doesn't change frequency with the engine RPM. It disappears when the car is stopped and idling. If you rev the motor (while stopped), the sound returns. But if you let off on the gas during this rev the sound will stop temporarily. The noise is independent of the radio (on/off), and seems to come from the passenger side, I presume the passenger speaker. It's a single frequency, probably 5k-10k Hz, not too loud. Can be very irritating in stop and go traffic! I don't remember when I first noticed the noise, but I want to say a couple weeks ago. I've had my car for 3 months, and it has 1000 miles. The next step will be to disconnect that speaker and verify the source. Might also be good to find someone at the dealer who can hear that damn freq. Did you have any problems finding someone at the dealer to verify the noise? I was going to throw in an aftermarket DD Nav and speakers, and this might be a good excuse. I highly suspect it's just the stereo since it's only the passenger speaker. I'd think that if it was a general electrical problem, it wouldn't localize to one of the front speakers. You would hear the wine in both. |
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It is not the speaker, if you put your head up under the glove box you can hear it. If you put your ear next to the speaker you hear it from the other ear. Ours is a noise you cannot miss, anyone who has been in our car ask what that sound is and that its giving them a headache. Also the techs at Nissan heard the sounds and documented that they heard it. But yes it is the same way, it happens when you raise the RPMs, either while driving or in neutral. |
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Definitely keep us updated. |
Roo, do you have a Nissan contact (the guy who flew in?) I can get from you who is familiar with the problem? Nissan isn't going to connect the dots on their own, so I'd like to give them a little push. Thanks!
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your fiance is lucky man to get a gift like that btw. hope you get the noise issue resolved. |
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I'll get it and PM it to you. If others are having this issue then it needs to be resolved. Do you listen to your radio loud? Mine is heard over my radio (since I listen to talk radio, no music) unless themusic is LOUD. |
I hear a high pitched whine with the car not running but the ignition switch on. I have not been able to isolate it but I don't hear it when I am driving.
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[edit] BTW, I just confirmed my noise is also under the glove compartment. If you put your ear by the cigarette lighter in the passenger footwell, it's very very noticeable. Even a deaf mechanic should be able to hear it if I direct them to that spot. Service appointment scheduled for tomorrow at 2pm. |
Just a speculation, but have you considered an exhaust leak from the header or exhaust (cat)? Typically exhaust leaks are rpm dependent and can have a high pitch noise which get louder as a greater volume of exhaust travels through the system. Based on the service manual, nissan has metering equipment for diagnosing unknown sounds from the chassis and related.
It may well be electrically related, but worth considering any other variables regarding rpm dependent issues. |
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Good idea but the noise does not increase or decrease with RPMs. If it is idling there is no noise, if you raise the RPM 1 rpm the noise starts and stays at that level throughout whatever RPM your in. |
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I am going to find the fuse when I get for that and pull it, if it shuts off then they will really help diagnose the problem. |
And as 2 bits said you cannot hear this noise at all while outide the vehicle.
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Not to hijack, but I have this, too. Haven't taken the time yet to try and track it down. |
I am curious if those who are experiencing have the base models or touring? Also since the noise is now specified as throttle (accelerator) dependent it may have something to do with the fly by wire ECM. I am not sure where the module is but it may be near the area of described noises. I am not sure where the cabin filter assembly is located on the vehicle but a air leak may exhibit noises in the same area. Have you tried taking the glove box out and listening? I am sure there is usually a clip or restriction of some type that limits it's range of motion, take it off and see if the sounds can be better identified.
How about some rep? We don't need nissan to fix this, there are a lot more heads in this forum than they have on salary. Just take it step by step. |
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BTW my car is a Touring with navigation. |
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I don't have any idea if the high pitched whine I am getting is related to this thread. Can someone duplicate this condition (6 speed, touring)and tell me if you hear anything? Ignition switch on (car not running and not ACC) and transmission in gear, open the hood and listen for the whine. Interestingly when the transmission is put into neutral the whine stops. Thanks for any help.
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I am a bit lost, how is the car making any noise if it is not started or in ACC?
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On whine I hear is the fuel pump.
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Roo,
The ignition switch is in the on position and it could very well be the fuel pump. Would the fuel pump go off in neutral? |
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Push the ignition button once quickly for ACC, twice for on and hold to start.
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Edit: Ok, just went to the garage, it does go off in neutral. Seems to be coming from right under the engine cover near the firewall, almost dead center. With a closer listen, it almost sounds like you can hear something like a disk drive spinning as well so maybe it's associated with the Music Box although it wouldn't make any sense for it to be connected to being in gear. |
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Ok so I go in the car and push the button once and it turns on... If i push it twice it turns on... If i hold it turns on.... How do I access ACC/On mode?
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What if being in gear was related to the the synchro rev feature, maybe some time of second control unit for the throttle bodies, being in gear it would have signal... in neutral not so much. Although that is a complete guess since I exactly know how the fly by wire function actually works on the z.
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Ahh gotcha, I had my foot on the brake. Thanks!
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I don't have nav. Also, I'm not sure that the problem discussed at the beginning of the thread is the same one we're talking about.
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I have the noise too, it's high pitched and constant, does not change with RPM, etc.
sounds like the ringing that you hear after coming out of a rock concert. I noticed it more after driving for awhile, it gets louder. Probably b/c every electrical component has warmed up. It's definitely electrical. I thought it was the HID lights, but it's still there if you turn the lights off. It's coming from right under the dash somewhere, but have not been able to pin point it. Might be a grounding issue or wire shielding issue of some sort. Another problem I have is that when my cell phone is in the center console or cup holder, I get the dreaded chatter through the speakers, just before receiving a call or text message. So I know their is a wire shielding issue there, but not sure if it is related. :mad: |
I had a similar noise in my car. A high pitched whine coming from the passenger side. Guess what it was? My wife closed the air vent on the door. With the fan speed set to AUTO, the velocity of the air moving through the slits in the now-closed vent was fast enough to turn it into a dog whistle!
Check your vent and see if it's closed. |
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