Windshield Washer Problem
Thread Starter
Newbie
Joined: May 2010
Posts: 5
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2002 ML500
Windshield Washer Problem
I bought a used 2002 ML500 and for some reason the front & rear windshield washers won't squirt. The wipers work, there's water in the reservoir but I'm not getting any washer solution out of the nozzles (three in front and one in back). Has anyone experienced this? How can all 3 squirters go bad? Any feedback would be appreciated.
Super Member
Joined: Feb 2007
Posts: 809
Likes: 74
From: Dallas, TX
2008 E63 wagon (1 of 62)
they go bad or get clogged from people using non-diluted cheap blue washer from Walmart..
or it could be that the pumps are working, but all the nozzles are plugged up..
or it could be that the pumps are working, but all the nozzles are plugged up..
Super Member
Joined: Feb 2007
Posts: 809
Likes: 74
From: Dallas, TX
2008 E63 wagon (1 of 62)
usually when i find a nozzle that needs to be unclogged, i find a very small tipped needle and poke around until it sprays out like normal again.. Just make sure that if you start moving the tip around, to move it back.. you can adjust where it sprays by checking the spray pattern when it starts squirting again so its not shooting over the roof like some I have seen...
Newbie
Joined: Jul 2007
Posts: 1
Likes: 0
I have a 2000 plate ML320 and had a similar problem. I traced the hose from the pumps up to the firewall, pulled back the rubber strip, levered up the metal clips and pulled back the plastic top grill. There I found an inline return valve assembly, which I stripped, cleaned and reassembled. The washers burst into life when I flicked the lever.
Hope this helps
Hope this helps
Thread Starter
Newbie
Joined: May 2010
Posts: 5
Likes: 0
2002 ML500
Thanks everybody for your help. Had to replace two of the washer pumps. Got a good deal from an online supplier - www.AutohausAZ.com
