Noisy upper light console on 1997 S500 Sedan - Mercedes-Benz Forum

 
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post #1 of 4 (permalink) Old 02-12-2004, 01:42 PM Thread Starter
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Noisy upper light console on 1997 S500 Sedan

Howdy guys! I recently picked up this car with 49,000 miles & a 3 year warranty. Within a week of ownership, I started to notice a light buzzing sound about half the time I drive it. I finally found the noise is coming from the upper light console which also houses the moon roof switch.

I can feel the vibration & hear the buzzing (which sounds vaguely metallic yet semi electrical sounding when I turn on the ignition. The buzzing will last up to 10 seconds after switching off the car, and I usually hear a small "click" coming from the center a/c console.

Is this an automatic climate control issue? Thanks in advance for your time & reply.

Regards,
Shawn
Las Vegas
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post #2 of 4 (permalink) Old 02-13-2004, 09:34 AM Thread Starter
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RE: Noisy upper light console on 1997 S500 Sedan

Many thanks to Peter Guenther of Florida & "mabrams" of UK Portsmouth in the W140 S Class Forum for information about the aspirator blower & the source of the annoying noise. I found several MB service bulletins mentioning it on different models. [:)]
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post #3 of 4 (permalink) Old 06-02-2005, 08:36 PM
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RE: Noisy upper light console on 1997 S500 Sedan

I am experiencing the same buzzing noise from the upper light console in my 96 S500. Please provide any info on what is causing this noise and how to fix it. Thanks in advance for the assistance.
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post #4 of 4 (permalink) Old 06-04-2005, 08:34 AM
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RE: Noisy upper light console on 1997 S500 Sedan

It is called the aspirator fan and takes in air thru the little slots and sends it to a sensor to regulate the temperature.
You have to remove the assembly to get at it. I have never done mine but it talks about it in the workshop manual.
Thanks for the kind words, giving advice and getting some make it all worth while!
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