When I bought my W164 some months ago the rear wiper motor was not working and was stuck according to previous owner. So I bought new motor (not Original, but came up with the same partnumber as it aparantly is used in many other cars, chryslers and so on). 

So no problem changing motor but it works in a funny way. It only moves around 1/4 of the way when it is on, have to wait 10sec so it moves again 1/4 or turn OFF and the ON 5 times for the wipers to travel the whole way. But when I use the window washers, then the wipers move like they are suposed to. I have changed out relay P and S but no luck.

Anyone have any idea? 

 

See video of behaviour 

Comments

There seems to be too much resistance on the wiper arm. That's why when you spray water it works better. 

You may have to remove the motor to inspect it. 

Or it could be a weak wiper motor if it was used. 

The high resistance could be where the wiper arm goes through the windshield as well.

Bottom line is that you may have to remove it and inspect.

Hope this helps. 

Hello. No that is not the case, if I pull them in the air (same position as when changing blade) it behave the same, and there is zero friction there. 

Plain text

  • Allowed HTML tags: <a href hreflang> <em> <strong> <cite> <blockquote cite> <code> <ul type> <ol start type='1 A I'> <li> <dl> <dt> <dd> <h2 id='jump-*'> <h3 id> <h4 id> <h5 id> <h6 id>
  • No HTML tags allowed.
  • Lines and paragraphs break automatically.
  • Only images hosted on this site may be used in <img> tags.
The content of this field is kept private and will not be shown publicly.

Disclaimer: Youcanic has made every effort to assure the accuracy of the information on this page. Neither Youcanic nor its affiliates assume responsibility for any loss or damage due to any errors, omissions, lack of information. You agree to hold Youcanic free from any liability arising out of the use of any information contained within. All pictures and references to trademarks and car names are for reference only and do not imply an association with the manufacturer. Consult your owner's manual or authorized factory manuals when performing repair procedures. By entering this site, you agree to our Terms & Conditions and Privacy Polity.