High pitch noise coming from passenger side

Ztoon

Yep, when it's in gear the noise is constant. The younger the passenger the louder it seems to them. Young ears are more receptive to high frequency sounds. I keep adding bolt on mods, and it's not so noticeable. F.I. H.F.C.'s next, and hopefully that'll be the end of it.

TheWeatherman

I took it to the dealer today for the noise. You'll love this Ztoon... The older service manager couldn't hear it, and the younger heard it loud and clear. It's now really loud. Someone posted that the G37's are having this same problem and right now, Infiniti's solution to it is wrapping the ECU in sound insulating material without too much as to not overheat it. (Not the greatest results from this trick I have learned.)

I chose to have nothing done, but my dealer is reporting it and waiting for the next step. They said that it was really annoying as well. We'll see what happens, but just had to give a quick update. You'd better have some young or good ears. If you do, you get out of the car and your ears keep ringing. It really is that loud. We even turned up the radio and could still hear it loud and clear. Interesting, huh? That's a dealer that clearly heard it. I even disconnected my nav, unplugged any charger or adapter, turned off the radio, turned on and off the AC, shut off the fan motor, and it was still ringing in for my "younger" service manager to hear. He said, "yeah, that sucks!" It's not the fuel pump or radio. ECU. We'll see what happens. The G37 guys have a year jump on us.

Majestik

I had a high pitch noise from the passenger side too. Drove me crazy until I realized that it was air squeezing thru the slits of a closed air vent.