Strange noise in overhead console of W140
 

My 1997 S-320 has recently developed a noise in the speaker looking type thing ion the overhead console. The noise sounds like a little buzzing. It starts when the ignition is turned on and shuts off when the ignition is turned off and runs while the car is running.

I put a paper clip in there and the noise stopped. I felt the paper clip hit something as if it was spinning, and this topped the noise. then I listened closer with the paper clip in and the noise sounded like a litte motor was running. I removed the clip and the noise began again.

Waht could this be. What are some solutions

There's a teenie tiny fan up in there that draws air up and across the in-car temp sensor for the climate control.
If you are so inclined you could remove the interior light panel up there and maybe remove and clean/oil the little bugger up, otherwise I believe it may be available as a seperate part, so you could repl. just the fan.

Gilly

PS as a test I think (not 100% sure) that if you hit the "0" button on the climate control (shut the system off) it may shut off that little fan.

Thanks for the reply. I had no idea what that was...now that I do I seen just how engineering goes into these cars.

Is the overhead console easy to remove..are their anytricks to removing it like there are removing the radio face of the radio on the W124's. (coat hanger trick)

can this w140 get anymore advanced?:eek: