Sunday, 23 August 2015

E60: Blocked Washer-Pump - Quick Fix.

No water from windscreen washer-jets? Chances are it's a blockage in the pump filter. This is not a difficult job, rather a very easy one, so avoid unnecessary cost and fix it quickly yourself.

Check Fuse: 
Fuse 18 is the corresponding fuse. If the washer pump is dead and making no noise then this is the first thing to check. If it is still making a whining noise, then you have a blocked pump-filter.

** The headlamp washer system only functions when the headlights / sidelights are turned on. **

FIX:

Windscreen Washer System:

** The washer bottle is located just in front of the N/S (passenger) wheel-arch liner. The filler-neck is just behind the N/S headlamp and you can see the hose go down into the bodywork and rise up to where the tank is. The tank CANNOT be accessed from above, even when the headlamp is removed. It is much easier to peel the arch-liner back and work from inside the wheel-arch. **

** Obviously water will spill out of the washer bottle so just allow it to drain. **

1. Remove the 3 screws from the N/S/F plastic wheel-arch liner circled in the photo so that it can be peeled back out of the arch rim, one on the near edge, one along the bottom and one by the brake air-duct. It helps to turn the wheel full-lock one way or the other to give more room.

2. Gently pull the washer-jet hose connector off the spout on the side of the windscreen washer-pump. [It's the smaller grey one, furthest away in photo].

3. Reach in and grip the windscreen washer-pump, then gently turn it from side to side while lifting it upwards until the spout on the pump is free of the tank [it may need tilting towards the wheel to get out].

4. Unplug the wire-connector from the pump by depressing the clip on either side and sliding it upwards. The pump can now be removed from inspection if necessary. [Alternatively, leave the wiring connected and place the pump somewhere out of the way].

5. Gently prise the rubber base the pump sits in upwards out of it's collar in the tank, being careful not to detach the plastic-filter from below it and have it drop into the tank.

6. Remove the white plastic filter from the rubber piece and give it a good clean. [It's usually congealed screen-wash clogging it as in the photo, rather than detritus].

7. Refit the plastic filter to the bottom of the rubber base and carefully lower it vertically back into the tank.

8. Refit the pump as a reversal of steps 4 to 1.

Sticky residue wrapped right around the filter-gauze
had stopped flow into the pump completely.


Headlamp Washer System:
The process is the same for the larger headlamp washer pump, though the hose-connector at the bottom in the second photo is sturdier and needs the clip pushing up from undernath to slide the hose off.

Headlamp washer has a much bigger filter, I guess to get more
water into the bigger pump and higher pressure spray.

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