bob98e320

I can hear a 'humm' from the interior maplights when I start the car. Slight, electrical type sound with the lights off. Is that normal?

TIA

Bob

E-Klasse

No this is not normal. There is a small fan or vacuum pump that draws air in for the climate control temp sensor. When it starts to go bad, it makes noise.

bob98e320

Thank you~!

cwschmoyer

I too have this problem. My question is how to remove the sunroof / maplight assembly to get the small fan or vacuum pump. Can't figure out how the damn thing is attached to the roof. Any suggestions??

Thanks

99 E300
Go Diesel ...

galleryvw

you just give it a good yank - it's clipped in there with spring clamps

cwschmoyer

I'll try that, and thanks.

99 E300
Go Diesel ...