I have isolated the problem to occuring when the car is turned off while the
auto climate control is still in recycle air mode. If it is in fresh air
mode there is no noise.


"Art" > wrote in message
ink.net...
> One last item has turned up on my 300M. I had previously complained to my
> dealer that once in a while when you turned off the car, a screech came
> from under the hood. In other words. after the engine is off there is a 2
> or 3 second screach. Of course Chysler could not find a problem. Any
> ideas? I am wondering if it could be some kind of pressure build up in
> the ac system causing a problem when the car is suddenly turned off. It
> just happened twice on me but now I cannot duplicate. It seems more
> likely when the car hasn't been used for a while and is used for a very
> short time.
>