I have this annoying problem with my windshield washer reservoir. Everytime i fill it up to the top, after about 3 or 4 days it will be empty. (No i dont use the windshield washer fluid). I changed the reservoir, and to no avail, it still drops to empty. I've checked the lines, and there doesnt seem to be any leak. No leaks on my garage floor in the morning of reservoir fluid. What can mysteriously drain my windshield washer fluid.

Agron
1989 300E (107k miles)

Did you replace the gaskets that seal the two fluid pumps?? They are what got me...

Also, make sure much of your fluid isn't sloshing out the cap...is the gasket inside intact?


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Best regards, Michael
'92 500E
'88 300TE

There is a splitter check valve. Check it by following the lines until you see it.

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Benzmac:
Donnie Drummonds
1992 500E (very soon I hope
1981 280GE SWB
ASE CERTIFIED MASTER AUTO TECHNICIAN
SERVICE MANAGER FOR 14 BAY FACILITY
MERCEDES SPECIALIST 8 YRS
PARTNER IN MERCEDESSHOP.COM

I have changed the 2 rubber gaskets that seal the fluid pumps. Those are ok. Im going to check the splitter that Benzmac was talking about. Again, thanks, much appreciated

Agron
1989 300E (107k miles)

Benzmac:

I do not see what you mentioned to be a splitter valve. Are you referring to a 3 way washer check valve? If so, that does not exist in my vehicle which has the heating element in the reservoir. Can you be any more specific, or could it be something else. TIA.....this is a great website!


Agron
1989 300E (107k miles)

Also check the headlight washer/wipers. If the headlight wiper blades are out of adjustment the washer pump will run when the headlights are on. Let us know when you find the culprit.

I had this problem. The fluid actually leaked out of the pumps. Had to replace one, don't think it was too expensive.

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Bob Johnston
87 300E

BobJohnston & Beatle Juice:


Indeed it was one of the pumps. It was the right hand side one for the headlamp washers. The "needle" that hangs on the bottom of the pump was busted. Had to replace it--cost me 30 bucks. Thanks once again for this wonderful site.

Auf Wiedersehen!!!


Agron
1989 300E (107k miles)