Windshield Washer System

[JCL]

Assume it is the same as the X5. If so, there is one reservoir, and two pumps mounted on the bottom of the reservoir. Same pumps, one for front and one for rear. You can get a leak where the pumps clip in to the reservoir, or from the pump itself. If a pump wasn't working, you tried to use it, and then it leaked, it sounds like the pump itself. If a pump isn't working, it is easy to replace. You can test if it is the pump or not by swapping the wires on the pumps, and see if it works then. That will help isolate if it is the switch, the pump, or the plumbing from the pump to the nozzle.

[x3oiler]

Originally Posted by JCL

Assume it is the same as the X5. If so, there is one reservoir, and two pumps mounted on the bottom of the reservoir. Same pumps, one for front and one for rear. You can get a leak where the pumps clip in to the reservoir, or from the pump itself. If a pump wasn't working, you tried to use it, and then it leaked, it sounds like the pump itself. If a pump isn't working, it is easy to replace. You can test if it is the pump or not by swapping the wires on the pumps, and see if it works then. That will help isolate if it is the switch, the pump, or the plumbing from the pump to the nozzle.

I also found that using the BMW washer fluid I had a nice green slime buildup around the filter leading to the pumps. I had to a do a complete dis-assembly to remove the slime and clean the tank thus destroying a promising civilisation I thought at the time. ie use a torch and check the bottom of the tank ;-)