Thread: Auto wipers
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      01-15-2013, 03:39 AM   #12
DieselRocket
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United Kingdom
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Drives: 435d M Sport
Join Date: Sep 2012
Location: Bristol

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I had exactly the same problem with my 330d for the first few weeks - i.e. it always felt like it was running too slow for the amount of rain.

I then had my car detailed and winter prepped, including getting all the glass cleaned and coated with Gtechniq. Since then, the rain sensors have behaved differently and I now keep them on either minimum setting or one up from minimum and all is fine.

So I guess the idea of keeping your screen clean around the sensor works.