[Dmitri]

When I park the car in the garage and turn off the engine, I can hear a high pitched noise for about a minute before it cuts off. It looks like it's related to the LED DRLs because the noise cuts off seconds after the LEDs turn off. If I open a door, LEDs come back on and so does the noise.
Anyone else having this? Not sure if its something worth a trip to a dealer.

 

[Boxster986S]

Yes, I've heard it. Since it goes away, assumed it was just part of the shut down process. My wife's GLK makes similar noises on shut down.

 

[AMGz]

If you have a service advisor you usually deal with it, calling them up about this will be a time efficient way to find out.

Or even Mercedes Corporate.