Strange sound behind dashboard


Asked by Oct 05, 2016 at 10:11 PM about the 2011 Buick LaCrosse CX

Question type: Maintenance & Repair

Today I noticed a strange sound behind dashboard. It sounds like some small wheel is
turning slowly (one turn per second). First I thought a belt might be faulty. I opened the
hood, could not hear such a noise, then I stopped the engine, removed the key, noise still
persisted. the noise can only be heard inside the car, from somewhere behind the
dashboard. it goes away a couple seconds after after all lights are off (power cut off). As
soon as I opened the door (without inserting the key), the noise comes up again. opening
the door causes battery to provide power to lights, hence powered the noise.

I always had radio turned on, so I am not sure when the noise started (I am sure it is a
recent issue).

Any idea?

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