I'm curious -- those of you who are suffering through this issue, did you not notice it when you took your cars for a test drive? Or did some of you not test drive at all? Or did the problem develop only after you took possession (i.e., it started after x number of miles)?

It's probably one of those things where the salesperson is talking too much or you've got the windows down or something during the testdrive and thereby not hearing it. It's also not prevalent on all Zs so maybe they drove a different car than they bought. Mine is barely noticeable; any hard driving or loud radio masks it very well. Some others aren't as lucky.

salesperson was talking to me. when i told him to shut up and let me drive, i didn't notice it because i was intent on the road, if that makes any sense. now during normal driving circumstances it's quite noticeable.

it's been growing, actually. to me, it's a lot louder than it was before. maybe because i notice it and i get into the car thinking "that damn noise needs to stop"??

Mine started just about 8500 miles. I had read the threads by Roo a while back, and had listened for it but it wasn't there. Then one morning I got in the car and it was there.

Okay, now that's horrifying.

Exactly! Mine started right around that same mileage as well. Up until that point I read these threads thinking, "man, I'm really lucky I didn't get one of those!"

It is horrible. Even with my exhaust it is just killer... gives me headaches all the time. I hate it.

I am tempted to take the car in but doubt it'd do any good... thinking maybe I'll just call my dealer to see if they've been dealing with any of this and have them let me know when they see a TSB come down.

Great multiple posts to both of you. The noise in my G37 started about the same time as you saw...8K+ miles during a road trip. I thought it was just the specific rough stretch of interstate highway that I was on and something was loose. It initially went away when I got to smoother pavement, but now I hear it almost every day. Every once in a while I get a reprieve and don't hear it for a day or two, which makes it even more perplexing and makes me feel that the problem is more involved than simply the ECU. Weatherman, I'm like you...I hate this noise with a passion and I'm glad to hear someone finally mention a specific dealer name and service writer that has acknowledged the issue. I would think by now that all the dealers would have been advised of the potential problem, but my dealer couldn't replicate the problem. The loaner G35 they gave me had the same issue. I really like my car other than this problem, and I'm determined to find a solution other than stuffing a gym bag in the footwell of the passenger side! Thanks for all the good scoop from the Z side.

I just looked on the G37 forum, and one of the members got the "couldn't replicate" response from the dealer on this noise. They wanted to set up a followup meeting with a manager to talk "discuss" the situation. Maybe we need to take our cars into the Nissan dealers..at least some of them appear to acknowledge the problem.

All I can say is get an attorney and don't let Nissan push you around. Everyone who has this problem needs to step up to the plate, find a lemon law attorney in your area (it will cost you noting!) and go after Nissan. Even if Nissan comes up with a fix if you have filed a claim and have an attorney you will get compensation. It is ridiculous that Nissan is not trying to fix the problem but muffle it.

I just listened to the tone...... Holy smoley! If I had that sound, I would go bananas. How in the H!ELL do others with this noise bear it?

This would pierce my ears!

Well for lots of us it's our only mode of transportation so we just have to deal with it for the time being. I crank up the radio louder than I normally would to try and mask it.

This alone would have been something to keep me from buying this car, but lucky for Nissan it didn't surface until around 8500 miles. If I knew about this problem before I bought mine... either by reading here or listening to it on my test drives I can tell you without a doubt that I'd be driving a different car right now. This car just isn't good enough to justify dealing with crap like this!

Interesting, tonight I drove my Z, and I noticed the sound. It's very faint to me, but present.

Makes me wonder if there are different levels of "fail" involved when it comes to the noise.

So you have a lemon law lawyer and they are free? thats good to know for when I get to that mile limit and if mine starts to do it.

My hearing is too good to ignore the noise. It's loud, distracting, and aggravating, so it's becoming more of a safety issue for me.

If there isn't a fix soon, I may have to go the lemon law route. I went with Infiniti for my G37 vs. BMW, etc. thinking for sure it would be more reliable, but this is the worst issue I've ever had in any car that I've owned since it appears to be unfixable (most likely much more involved than just the ECU) and the dealers are just doing a song and dance delay routine. I think Nissan/Infiniti is on the brink of becoming another Audi in the '80 with their defective transmission problems that they never owned up to. It nearly sunk Audi.

Does anyone know what the recorded volume levels are? I hear it faintly from time to time but it doesn't drive me crazy yet. I only have 1800 miles though. Maybe we can do what they do in the airplanes by using a noise canceling frequency until a fix is made. I bet or hope the fix will be something very simple. :stirthepot:

Mebbe everyone gets together for a class-action lawsuit? I know nothing about these things, though. Any lawyers on the forum?

Any Nismos encounter this noise yet?

i was just wondering the same thing.

You probably need to give it some more time and let the miles build up. There isn't too much of a difference between the regular 370 and the NISMO, so I wouldn't doubt that we'll start to see some complaints from NISMO owners after they run 8k miles or so.

I was just looking for another variable that could help determine the issue. If Nismos aren't getting it, could that indicate that the ECU is to blame? Or do we have the same ECU with just different software loaded on it? (I'm ignorant on that)

I just noticed this morning I'm getting the frequency noise on the passenger side. You really hear it when you turn your head, it's almost sounds like an old TV turned on without sound turned on. I don't think this has anything to do with mileage of the vehicle because I have only 1k miles on it uuuggggh. It doesn't bother me that much, but I do want this fixed. I'll bring it into the shop so they can just have record of another car with the issue.

not yet but iam only 375 miles in.

how many miles you have on your nismo?

something needs to be done about this problem. When I talked to my dealership last time they told me nissan knew about the problem and were coming out with a fix for it. I called Nissan North America yesterday and opened a CA file, when i asked if they knew about this problem the person I talked to said there have been no reports / and or is not a known problem with nissan. So basically she told me that nothings wrong with my car and no one else is experiencing this. I spoke with Sherie Matores ext. 41 629 who was a Customer Representative as Nissan Consumer Affairs. I hate to sell the vehicle back or go the lemon law attorney route but they are leaving me with no options. I need your guys help from the forum to get something done. Maybe a signed petition what not ( dont know what it would be called ) , file a joint complaint with everyone who is experiencing this problem to nissan cause its starting to get ridiculous.

Sometime I get that high frequency noise and sometime I don't. I noticed it especially on cold start and not moving. My car has about 1k miles.

I made an appointment with my local Service Manager to take a look at the car to hear the noise. It's coming from the ECU location, but it's tough to say if it's the ECU. It seems nobody knows the origin of the noise. I'll keep you posted on any findings.

Does anyone have additional facts about the frequency noise?

The noise starts when my car rev hits 1,000 RPM's, I can be parked, or driving

I wonder if the noise issue would not exist had Nissan did not put a priority on weight reduction. What I mean is that if they installed more sound reducing materials like foam this would not exist, correct?

It also happens in Infiniti vehicles which do have sound proofing.

Atleast from what I'm reading and seeing with my Z is that it's replicable. Rev the car over 1K RPM's and you'll ear the frequency noise from the glovebox area.

No that's not correct. If the source of the problem didn't exist in the first place, it wouldn't matter if there was enough sound deadening or not. The noise would still exist even if u just blocked it out.

I've owned what seems like a jillion vehicles over my lifetime. Without exception any problem significant or initially unsolveable enough to contact the mfg resulted in the same lie that I was the only one who had experienced the problem and or made a complaint. How in the world can this be a good business strategy. I assume however since this response is ubiquitous it must work for the bottom line... SAD!

Sorry. I was not clear

what I meant to say is that the sound would still exist but not audible enough to be annoying.

I've listened to that noise several times and it almost sounds like I have heard it before.A very famuliar sound to me?
So the other night it was unusually warm and I was cleaning the car.When I was finished I was having a beer and smoking one of my buds from my new crop and it suddenly came to me!
The sound you are hearing is an old Led Zeppelin tune.It is very hard to hear it with the human ear but after the bud I smoked it was very clear to me that is what it is!I actually like it guys!
I'am not taking mine in if there is a recall!

Where in NJ are you located?

South Jersey!

Booo!!!!! Sorry guys it's Jerzey thing LOL!

The noise seems to come and go in my G37....either very loud, or not there at all. I'm trying to sort out what might be triggering it as an interim fix until Infiniti/Nissan sorts it out.

I took the 370Z today to the Service Manager over at Curry Nissan (NY). He heard the noise and was trying to figure out how to handle this. He didn't want to begin cutting up the car. He said he'll bring this up to his Region Rep next week. But he did ear it! They weren't sure what devices are near the passenger side to cause that noise, other then the ECU which he didn't think would make a noise like that.

So I just hope Nissan is actually working on this issue, because I think I'm loosing my hearing lol

That's good news that they are trying to sort it out. My service manager said to bring it in when it acts up again and they'll try to isolate the problem. So far, the in the two times I've taken it in, the noise hasn't been acting up those days.

Silver37, did you take the Service Manager out for a drive? I took mine out on the highway and you can def hear it. Then when I took him back to the shop we were in the parking lot trying to isolate where the sound is coming from. Whenever I rev'd the car you heard it and as soon as i let go of the gas the sound stopped.

Finally... My service maneger decided to replace ECU.:tup: