High-Pitched Frequency Update

TipsZ

Where can I got to see if I have serial number ending with a B or an A? The odd thing is that I do not hear that high pitched noise all the time. It seems to be hit or miss. Sometimes it is present, other times it is not. Almost as if the the voltage to the ECU changes ever so slightly, to cause the noise. I have experienced at times that if I hear the noise upon start up, I turn the car off and wait about 10 to 15 minutes and restart it, the sound is not present. Thus, it leads me to believe perhaps it is a grounding issue. If a proper ground is present at all times it helps regulate a constant voltage drop at all times. Either way, the next time I hear that damned noise I am taking it to the dealership for them to "document" in person the issue. I really hate it when the dealership can not recreate the issue for themselves, as it is pretty much a waste of my time of dropping off the vehicle for that day.

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