RobRoy

Occasionally I hear a short clicking noise which sounds as if it's coming from behind the dash. Any info is appreciated.

Sean1234

I have a similar type of noise on my 2010 E550. It is the climate control opening/closing for the windshield as the car gets up to temperature. Depend on how loud the radio is I sometimes hear it and sometimes don't.

RobRoy

Thanks. Appreciate the timely response.

noka

I wonder if it's some ventilation control flap stepper motor and if some might be a bit noiser than others. Maybe compare to another vehicle.

Sean1234

Its a motor for sure, it seem to be dependent on how cold it is whether or not I hear it. Seems to be when it is really cold I hear it as the car is up to temp after running for about 10 mins. The sounds goes for about 5 move on and off then goes away when the car is fully heated. Haven't had the car in the summer to compare when running the AC

RobRoy

Thanks for your input.