BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > DIY Guides > DIY: Windshield Washer Fluid Pump Replacement

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      05-28-2016, 10:41 PM   #1
Air Drop
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DIY: Windshield Washer Fluid Pump Replacement

So no s*it there I was, approaching my car one morning to see a stream of blue fluid streaking from the area of my front right tire. Washer fluid it was indeed.

After a bit of research, I figured my windshield washer fluid pump had cracked; so I ordered a new pump and a new grommet and set out to install.

What you need:

11mm deep well socket & extension
10mm socket
8mm socket
Panel Clip Removal Tool
Floor Jack
Jack Pad Adapter

How to execute:

1: Loosen lug nuts on front right wheel
2: Jack up car using front right jack pad (use jack stand to be extra safe)
3: Remove front right wheel
4: Use 10mm socket to remove two nuts; one nut is straight line of sight, the other is below the car just back from the wheel well opening
5: Use a 8mm socket to remove ~7 nuts from the wheel well shroud. 1 8mm nut is below the car.
6: Use panel clip removal tool to remove single panel clip under car, just back from wheel well opening.
7: Remove wheel well shroud
8: Look inside quarter panel, and you will see the windshield washer fluid reservoir. Remove 1 x 10mm bolt from the reservoir, and pull the reservoir and pump into full sight.
9: Place bucket under pump and reservoir
10: Remove electric plug from pump
11: Remove fluid tube from pump
12: Pull up on pump to remove; the OEM grommet is a two-piece unit; the filter may remain in the reservoir; use needle nose plyers to pull this piece out. Expect fluid to drip/flow out during this, hence the bucket.
13: Install new grommet (push down hard to insure it sits well), then install pump, reattach fluid tube and electric plug.
14: Fill reservoir with fluid; check for leaks.
15: Go in reverse order steps 1-8.
16: Done.

Total time is approximately 1 hour for a first time execution.

One note: a triangular piece of plastic on the actual reservoir holds the pump in place, to ensure the grommet sits well. This piece had partially broken off on my reservoir and ultimately caused the leak. I used a silicone sealant to seat the pump properly; I also applied this sealant around the grommet to prevent pressurized up-seating or leaks.

Good luck
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2008 335i 6MT Coupe
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      05-29-2016, 06:01 PM   #2
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