I have a couple of problems which I observed from the very first day I got my car.
1. Whistling noise comes out of dashboard every time the car is parked in the Sun and the noise keeps on coming for the rest of the day. Showed it to the dealer, they replaced an expansion valve that diverts the flow of Freon through the a/c lines. That didn't fix the noise however
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2. Sometimes the audio comes out of iPod touch speakers instead of the car speakers. Replaced new usb iPod cable, but no luck. Needs an engine restart to fix that problem...just a minor inconvenience.