Washer pumps.
On some models with H/L washers, there are three pumps, one for the headlamps (BIG HOSE) located on the engine side of the what seems like a 5 gal box of fluid, while on the firewall end of the reservoir are two pumps one for the front and the other is the rear (#4 below) (if your vehicle is so equipped). Some models only have the rear pumps - NO HEAD LAMP WASHERS.
The second image below shows the two mounting points in the rear for the pumps.
While the two rear pumps are the same part number and are thereby interchangeable to determine if the other end works, they use separate hose lines with 90 degree fittings made from plastic.
The easiest way to repair, is to pull the electrical connectors off the rear units and H/L pumps, unbolt the two plastic nuts that hold the reservoir down, pull the two rear pumps out, and pull up the reservoir leaving the front headlamp pump hose connected. Once out pull the front H/L pump out. If you have Ninja quick hands you will loose a qt of fluid.
Once out you can rinse out all the crap in the tank, replace the filter seals, inspect for any cracks in the lines, fittings, etc with room.
Don't forget to replace the inlet screen (#5) if someone tossed yours out way back in time.
The pumps are cheap enough to replace both smaller front and rear washers pumps. (The rear pumps) Use non OE as this item is a HIGH failure item and there are lots of options on the market.
NOTE: If your tank is still leaking down to the pump level afterwards, you did not install the new filter/seals around each pump. If your seals are OE, buy new ones. Oh, and disconnect the front washer pump electrical quick connect, if you want to keep your hood and grill area clean this summer. That damn thing fires off every 5 washer pump cycles and must use 1.5 gals at a time.
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2005 X5 4.8IS
The
Blue ones are always FASTER....
Current Garage:
2005 X5 4.8is
2002 M5 TiSilver
2003 525iT
1998 528i
Former Garage Stable Highlights
2004 325XiT Sport
1973 De Tomaso Pantera, L Model
1970 Dodge Challenger T/A 4 sp Alpine White
1970 Dodge Challenger T/A 4 sp GoManGo Green
1971 Dart Sport, “Dart Light” package
1969 Road Runner 383
1968 Ply Barracuda 340S FB Sea-foam Green