Jim Hopper

Has anyone had any experience to replace the windshield pump? Is it expensive? I washed my car today and found that the windshield water not spraying out on my way back home. When I pressed the button I heard no pump running sound, so I guess the pump is not working. I am thinking to replace it, but not sure how many do I need because it seems like 3 nozzles there.

Any suggestion will be appreciated!!

GringoBling

Super simple, pump is like 20 bucks. It's two hoses and a plug. You access it by unscrewing a plastic panel under the drivers headlight from under the car (no lift required, see link)

https://www.mercedesmedic.com/merced...luid-problems/

Jim Hopper

Thanks!!!

tyabnet

Check the fuse first.
The pump is accessed by removing the left fender well. So remove the left front tire, remove the fender liner, and you will be looking at the pump.
Most likely the pump you need is part number: A 099 866 01 21. When replacing it, check the grommet below, it is part number: A 001 998 73 01.
A new replacement pump from MB ebay dealers trying to sell inventory is around $30 and it will be significantly more than that if you buy it from the MB parts counter.
It is steps 1-4 of the attached WIS.

diamondsilver16

@Jim Hopper are you from Hawkins Indiana by any chance?

Jim Hopper

No I am in Canada

Jim Hopper

If it's the pump, then sounds like fairly complicated to replace.

Jim Hopper

If it's the pump, then sounds like fairly complicated to replace.

Camaroguy72

I held the button down for 30 seconds at a time for a few cycles. Finally got it spraying. Dealer found no fault.

tyabnet

Must have been a blockage that worked free. Glad it did not cost you any time or parts!