I've had my Insight since January and have heard the high pitched sound. It always seemed to be coming from the front, but it wasn't until I removed the interior panels to install my new stereo, that I realized that it is actually coming from where the rear battery sits. Try taking the cover over the spare tire off and going for a ride and you'll see what I mean.
I also found out that the fan back there for the battery is pretty loud without the panels in place. It came on while I was driving and I was like WTF is that, but figured it out pretty quickly.
|
