Windshield wiper wipes once when car is turned on

Feb 17, 2016 | 10:58 PM

cheerful

Thread Starter

Member

Joined: Nov 2014

Posts: 213

Likes: 6

C300

Windshield wiper wipes once when car is turned on

The switch is at the 3-dot position, which I think it's the rain-sensor one. Indoor or outdoor, no rain, the wiper will wipe once when the car is switched on. It's cold but definitely no rain or snow. I've cleaned the windshield and wipers as well.

What could be the problem?

Thanks

Feb 18, 2016 | 01:36 AM

gfmohn

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Joined: Apr 2010

Posts: 789

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From: Eastern Massachusetts

2021 E450, 2020 C43, 2015 C300, 2007 C280

Off means "off"

Quote:

Originally Posted by cheerful

That's normal. Also, when you change between rain-sensor one and rain-sensor two, it will make a pass, even if it's not raining. If you don't want the wiper to wipe once when the car is switched on, keep it in the "off" position. That's a good idea anyway. I have seen a post where an owner complained that he did what you are doing and eventually his windshield was scratched from airborne dust on the windshield. It must wear out the blades too, when they are wiping dry.

Feb 18, 2016 | 03:39 AM

ManiacGT

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Joined: Jan 2015

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From: Manchester, UK

BMW e89 Z4 sDrive 35i & MB S205 C200 AMG Premium Plus

In auto wiper mode my car does not wipe until rain or mist on the screen. There is no wipe on startup. Perhaps it's a legal/location/regulatory thing.

Feb 18, 2016 | 08:53 AM

StanNH

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From: Whitefield, NH

2015 C300 Sport: Palladium, Premium, Multimedia, Leather, BLIS

Quote:

Originally Posted by ManiacGT

In auto wiper mode my car does not wipe until rain or mist on the screen. There is no wipe on startup. Perhaps it's a legal/location/regulatory thing.

Mine doesn't either. It might just be something as simple as water left on the rain sensor from previous use.

Feb 18, 2016 | 09:25 AM

BenzC400

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Joined: May 2014

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From: Northeast USA

AMG CLE 53

Mine doesn't wipe on start up either. That wouldn't make sense.

Feb 18, 2016 | 12:55 PM

kenya

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Joined: Mar 2015

Posts: 26

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From: Maryland

2015 C400

Mine does this quite often as well. I had my windshield replaced recently and thought it might have been related to that since I didn't recall it doing so prior. Not enough of an issue to warrant a special trip to the dealer, but I did i find it interesting that you were experiencing the same (I am presuming you are still using the windshield the car came with).

For clarification...The replacement is an OEM MB windshield direct from dealer service department.

Feb 18, 2016 | 01:52 PM

jolt8631

Super Member

Joined: Sep 2014

Posts: 561

Likes: 4

From: UK (South West)

2015 C220 AMG Line Bluetech.

I always leave in Auto and mine never does this. It sounds like, either, a faulty sensor or condensation/dirt in the sensors' opening. If the screen is perfectly clean on the outside, then I'd have it into the dealer.

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Feb 6, 2017 | 04:24 PM

z28lt1

Super Member

Joined: Jun 2015

Posts: 630

Likes: 188

C450, GLS 63 and a few other things

Quote:

Originally Posted by kenya

I know this is an old thread, wanted to see if you (or anyone else) has received more information? I just had my windshield replaced with another MB one, and I now, for the first time ever, get the one wipe at power on. Glass place wants to look at it and attempt to fix, but I'm hopeful to go in with more information. They are speculating dust got in there or something.

Did yours actually work well when it rained?

I'm wondering if disconnecting the sensors during glass replacement, resets it to this functionality, or if I have the wrong window, or what.... I think it should rain tomorrow, so I can at least tell if they are working properly otherwise.

Seems strange that a glass replacement to another OEM windshield would trigger this.