Enthusiastic Rain Sensor (CLK)

[Igurisu]

I usually just leave my wiper settings on auto and let the rain sensor do its job. This has worked fine until the last couple of weeks. Now it seems as though the sensor is detecting more rain/water than is actually falling. If I leave it on auto, occasionally it will work, but more often than not it soon has the wipers up to full speed. What I end up doing is then turning the stalk another notch so its on the standard speed but permanently wiping, annoying when I only need the occasional swipe.

Maybe I just need to give the sensor a good clean? If so, where is it located?

Or is this a sympton of something starting to fail?

I read in this thread http://www.mbclub.co.uk/forums/electronics/141237-intermittent-wipers-not-working.html that unplugging the sensor will revert to a standard intermittent, that would be better than what I have at the moment. Ideally though I'd like to sort the problem properly.

 

[jaymanek]

The sensor is behind the mirror at the top of the screen.... if there is moisture trapped in there, it will affect its function..

 

[davidsw]

Clean the screen well outside where the sensor is located and make sure you have realy good wiper blades (MB main dealers are not ever so expensive).The tips of the blades are important where they travel over the sensor area.

 

[Igurisu]

Thanks Jay, it could well be that, I've had some condensation in the car during the last couple of wet weeks. I'll try to take a look or maybe get a hairdryer in there to make sure its dry.