Rain sensing wipers don't work?
Thread Starter
MBWorld Fanatic!
Joined: Dec 2001
Posts: 3,430
Likes: 187
From: USA
W140 Mercedes S350, W221 S550 sport
Rain sensing wipers don't work?
Never had this car in the rain, but got caught in it the other day. I was waiting for the windshield wipers to start working on their own, but they never did. I know this is a feature. The stalk was in the off position, but they never came on.
The car did get a new windshield for the CPO due to some chips, which is great, and at the time, I was thinking (I hope they hooked everything up properly when putting it in)
Any ideas on what may be wrong?
The car did get a new windshield for the CPO due to some chips, which is great, and at the time, I was thinking (I hope they hooked everything up properly when putting it in)
Any ideas on what may be wrong?
Thread Starter
MBWorld Fanatic!
Joined: Dec 2001
Posts: 3,430
Likes: 187
From: USA
W140 Mercedes S350, W221 S550 sport
Super Member
Joined: Jun 2004
Posts: 731
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From: 30-A
2024 AMG G63, 2023 Bentley GTC Speed
Super Member
Joined: Jul 2006
Posts: 623
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From: pittsburgh
'25 740i; '15 targa4s; '24 cayenne
there are multiple windscreen wiper activation modes on the turn signal stalk. there are two intermittent modes, a regular continuous wipe and a fast continuous wipe. if you select either of the first two intermittent wipe modes, the wipers will activate when the sensors detect moisture enough on the windscreen that it needs to be cleared away. the sensitivity of the moisture detection is also adjusted by which of the two intermittent modes you select. so the wipers will activate more often in the second intermittent position than in the first as you should use to wipe the moisture more frequently based on your preference of detection. hope this helps. but yes - wiper will not activate at all when left in the off position.
