Windscreen washer problem

[Parkheadlad]

I own a 2004 CL500 and today noticed the windscreen washer system is not workings. There is no obvious 'pumping' noise when I depress the switch. The headlight washer is working fine. Assume it is not the fuse as the windscreen wipers (and the headlight washer) are working fine and I think they feed off the same fuse. Any thoughts/suggestions eg where to buy replacement parts would be much appreciated.

 

[EmilysDad]

headlights on cars are generally fed from a different higher pressure pump than the screen wash pump. Screen wash pumps are normally just a push fit into a grommet in the bottle.

 

[mioba]

Depends what parts you need. Could be a leaking pipe (any motor factors), could be a pump (if 2 pumps - then MB).

Find the cause of the problem and then get the parts you need. I always for MB for parts, no issues on fitment or quality.

Good luck and keep us posted!

 

[davidsl500]

Back to basics; locate the pump, remove electrical connector plug, stick voltmeter on connector and operate washer. If voltage then it's the pump, if no voltage then look elsewhere....

This is assuming the water side is intact....

 

[EmilysDad]

....

This is assuming the water side is intact....

It could be frozen .... hence no water or pump noise

 

[davidsl500]

It could be frozen .... hence no water or pump noise

I was thinking about that and was going to suggest disconnecting pipe from pump and using a syringe to check the pipes are clear. Headlamp washers work so the reservoir is not frozen...

 

[Parkheadlad]

Thanks for all the great advice - I'll do further investigation post Christmas indulgences