very strange quirk - wipers turn on when making a left turn - Page 2

Jun 6, 2009 | 11:39 AM

#26

jettie1767

Senior Member

Joined: Feb 2004

Posts: 257

Likes: 0

From: Colts Neck, NJ

08 CL600 Black

Quote:

Originally Posted by cameraman123

i think its pretty normal for the car to do this as your starting it with the wipers on. At least normal for me and my 220... just turn off your autos unless its raining

Sorry, but it's not normal. This is not my first car to have rain-sensing wipers.

Jun 6, 2009 | 01:21 PM

#27

Diesel Benz

MBWorld Fanatic!

Joined: Dec 2006

Posts: 6,497

Likes: 335

From: Europe

223.168 & 213.012 & 906.633 & 214.005

Quote:

Originally Posted by jettie1767

Sorry, but it's not normal. This is not my first car to have rain-sensing wipers.

Didn't previous models do that, wipe the screen once at start-up if auto selection was on (I tend to remember the W210 did)? But that does not happen on the W221. And this topic was about wipers turning on at a left turn, on their own. The W220 at start-up is a different story.

May 27, 2016 | 05:26 PM

#28

rolling18

Member

Joined: Nov 2015

Posts: 108

Likes: 4

2012 CLS63s White

sorry to revive an old thread but my 08 CL550 also has this problem in "auto" mode..
is there an update to any tsb or fix for this problem?

if there was remaining moisture/ raid wouldnt it happen on right turns as well?
thanks for any assistance!

Apr 21, 2017 | 07:21 AM

#29

kino1161

Member

Joined: Jul 2007

Posts: 104

Likes: 4

From: Virginia

2008 ML350 4Matic

My wife's ML350 has been doing this for quite awhile now, too! Only on left turns. Has anyone found a fix to this?

Apr 21, 2017 | 09:16 AM

#30

alx

MBWorld Fanatic!

Joined: Dec 2004

Posts: 4,268

Likes: 253

Rare accidental activation of the rain sensing wiper system is normal. The ir receiver can be tricked by certain ambient light conditions, bugs, mist from windshield wash of the car in front oor side of you, etc.

May 9, 2023 | 11:58 PM

#31

Allblackbenz11

Newbie

Joined: May 2023

Posts: 3

Likes: 0

From: Denver

2008 Mercedes C300 sport 2011 Mercedes E350 Sport with AMG kit

Quote:

Originally Posted by hotwiredbenz

yes it just swipes once. The frustrating part is that its impossible to get the dealer to replace anything unless they can replicate the problem.

Mine does the same thing except it won't shut off til I shut it off manually and it will wipe slow then on high like all hell. Could be paranormal I'm not sure.

May 10, 2023 | 09:34 PM

#32

Arrie

MBWorld Fanatic!

Joined: Oct 2010

Posts: 5,141

Likes: 1,293

From: Southern US

2010 E550, 273 Engine: 2012 S550, 278 Engine

Quote:

Originally Posted by Allblackbenz11

Mine does the same thing except it won't shut off til I shut it off manually and it will wipe slow then on high like all hell. Could be paranormal I'm not sure.

Could it be condensation on the windshield glass inside the rain sensor that moves across the sensor lens area when car turns left?

May 10, 2023 | 10:47 PM

#33

vettebk

Super Member

Joined: Dec 2018

Posts: 857

Likes: 501

From: Washington, DC

2007 S600, 2007 Chrysler 300 SRT8, 2000 C5 Corvette, 2017 Mustang GT, 2023 300C, and a 2019 Lincoln

I just tested it on my 2007 S600. And sure enough, when I made a left turn (south to east at 11 am); the car wiped just once. Totally dry day. Blue sky, not a cloud.

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May 11, 2023 | 02:11 PM

#34

BOTUS

MBWorld Fanatic!

Joined: Aug 2014

Posts: 5,316

Likes: 1,673

S500

its in the handbook

its as per post years back here say - its strange refraction catches it out occasionally - like the handbook says do not leave auto wipe enabled in the dry - inadvertent wipe may scratch the screen -

mine does it - I guess in oz and south africa they get it when turning right sometimes

as for repeated movements by the guy that dragged up this old thread... something is wrong...

Jul 3, 2025 | 03:45 PM

#35

B-tsai

Member

Joined: Jan 2011

Posts: 237

Likes: 5

CLK320, ML550, SL55, GL450

Did anybody solve this? Just change the multi switch?
Found PN 2215403345
Anybody have repair procedures on how to swap it out?
Cheers

Last edited by B-tsai; Jul 3, 2025 at 03:47 PM.

Jul 3, 2025 | 05:59 PM

#36

BOTUS

MBWorld Fanatic!

Joined: Aug 2014

Posts: 5,316

Likes: 1,673

S500

it is a feature of how Merc do rain sensing

the optical prism thingy gets affected by the refraction of sun light when its hits the sensor in specific ways - read the manual - it says all this - and to turn it off when its not raining

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