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Car Forum / Mercedes-Benz Cars / November 2006

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Rain sensing wipers run on.

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Mike Morgan - 03 Nov 2006 22:07 GMT
The "rain sensing" wipers on my 2000 S430 sometimes (but not always) run on
at regular speed even when there is little or no rain to sense.  Result is
much squonking.  (Blades are new.)

Is there some adjustment for this, or some sensor I should clean?

Mike
Tiger - 03 Nov 2006 22:08 GMT
How new is your blade?

I would clean the windshield super clean before testing it again.
Alec - 04 Nov 2006 08:10 GMT
The sensor is usually behind the mirror where it is stuck to the window.
Light is refracted/reflected from a led to a sensor, if there is water on
the screen the refraction/reflection is modified.

Keep this area of the screen very clean.

Alec

> The "rain sensing" wipers on my 2000 S430 sometimes (but not always) run
> on at regular speed even when there is little or no rain to sense.  Result
[quoted text clipped - 3 lines]
>
> Mike
 
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