2001 E320 Windshield Washer Pump
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Joined: Nov 2007
Posts: 22
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From: New York City
2012 GLK 350, 2018 GLE 350, 2005 XC70, 2006 XC90
2001 E320 Windshield Washer Pump
My pump is not working. I"m not hearing any motor noise when activating the switch in the cabin area. Any idea which fuse, (driver side next to the firewall) might this be? Or is is possibly the relays next to the fuse box?
Proud owner with 70,000 miles. Never sell, but maybe add another
Proud owner with 70,000 miles. Never sell, but maybe add another
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Joined: Oct 2007
Posts: 1,564
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From: SoCal
98 Brilliant Silver E320 Wagon
Possible fuses #41,43 in panel under hood. Also, #5,19 under rear seat. Best to test with meter or continuity tester as visual inspection isn't always reliable.
Last edited by RichardM98; Feb 25, 2011 at 11:19 AM.
Thread Starter
Junior Member
Joined: Nov 2007
Posts: 22
Likes: 0
From: New York City
2012 GLK 350, 2018 GLE 350, 2005 XC70, 2006 XC90
Thank you for the fast reply. I'll hit the auto part store for a continuity checker, (I'm missing a prong, of course on the one I have).
Best regards,
Best regards,
MBWorld Fanatic!
Joined: Oct 2007
Posts: 1,564
Likes: 19
From: SoCal
98 Brilliant Silver E320 Wagon
You might also consider a $5 multimeter from RadioShack, Walmart, etc. so you can test alkaline batteries. 
If you don't have the fuse cards for your car. Let me know and I'll post copies.
If you don't have the fuse cards for your car. Let me know and I'll post copies.
Last edited by RichardM98; Feb 25, 2011 at 07:27 PM.
MBWorld Fanatic!
Joined: Oct 2007
Posts: 1,564
Likes: 19
From: SoCal
98 Brilliant Silver E320 Wagon
Junior Member
Joined: Feb 2011
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2011 C 300 2001 E 430
I had the same problem, First check that your WW water tank is full, If it is empty , you may have a pump problem or a leak in the tubing) Soi I thoughtall I had to do is replace the pump. So I did some detective work and filled the tank full of WW fluid and had a helper activate the pump from the steering column. Found out it was a leak in the tubing right at the "tee" under the windshield. Thinking that I could replace the pump seperately and just reuse the tubing, Bought a WW pump and tried to gerryrig the tubing. Ended up going to MBZ dealer and buying the entir unit, sold as a kit (pump, tubing and sprayers ). I was done in 1/2 hour and after adjusting the jets, I have lots of WW water. On quick helping point: Raise the front hood to the 90 degree level (see DIYs) so that you can get to all the parts under the plastic covers without causing a neck spasm trying to see under the hood.
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From: Long Island, NY
01 E320
My pump failed a few months ago. I unpluged it and connected a voltmeter to the connections and saw that I got voltage so I knew it was the pump. I was surprised but the pump was a stock item at autozone and it was really cheap. The Autozone version has a different connector (which it comes with) so I cut off the existing connector and spliced in the new one. It was easy since it's so accessible. I'm sure you can order one from autohausaz or something with the same connector if you dont want to splice in a new one. Anyway it was a really easy and cheap repair
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