buzzing

Please help me... I have had a problem with batteries going flat Charging is good and I have been told I have a constant drain somewhere. Climbed in the other night to look for boot light etc and noticed a buzzing from the interior light area. I asume this is an air sensor for the climate...

Has anyone got any idea as to why the "lights left on" buzzer on my 190E doesn't sound when the driver's door is ajar. I think the buzzer is soldered to the back of the instrument panel. Is is it common for them to fail? Any advice gratefully received. :)

I've got a high pitched buzzing sound coming from the roof console. Seems to be the sunroof switch or something. It's electrical, not mechanical. It's drowned out by the stereo but you can hear it when it's off. Anyone have any idea what's causing this? Thought it was the bulbs at first...

hi there, & yes, this is my first post lol :-] anyway, where is the wiper relay on a 96 w202 ? my wipers are on intermittent all the time lol.......& 2 i got this buzzing sound from just above the rear view mirror......& its now beginning to iritate me! n e ideas what it is??? thanks in...

I wondered if any one had noticed a slight buzzing sound behind the interior lamp on the W202? I asked at the dealership today and there is in fact, a small fan behind the lamp which drags air over a temperature sensor. The fan runs when the key is in the "2" position. Mine was making a...