headlamp washers have stopped working

[jammiedodger]

Got an 03 plate 172 and the headlamp washers have stopped working.Checked fuses etc but still nothing.Does anyone have any ideas??

Jamie

 

[Da]

Are you testing them with the lights on?

Have both failed at the same time?
It's a separate pump but is UCH controlled so it could be either of those. Do the windscreen washers still work?

 

[jammiedodger]

Testing with lights on, and both do not work/both failed at the same time.Windscreen washers still work

Jamie

 

[*Badger*]

Make sure your washer bottle is brimmed. Mine sometimes stop working when the washer bottle is getting low, sort of like an eatly warning! I suspect the pump for the headlights sits higher in the bottle so cant get the dregs out of the bottle.

On another note - what is UCH ? Seen it mentioned on a couple of faults now....

 

[Fletcher]

If they aren't leaking then, i'd leave it as they do f**k all.

 

[bmh.01]

Also check the relay on the UCH itself.

 

[DrR]

If they aren't leaking then, i'd leave it as they do f**k all.

What he said, they are prone to leaking, so fixing it will probably cause them to.

 

[bmh.01]

On another note - what is UCH ? Seen it mentioned on a couple of faults now....

Look under the passenger side of the dash, the black box with several relays and lots of wires going to it is the UCH. Its a PLC pretty much (basic-ish control computer) that controls pretty much all of the auxaillary electrical systems (ie. lights, wipers, climate control). The stalks and switchs are connected to the UCH which is then connected to the devices to give the desired function and allows for things like the auto wipers and lights to the controlled (when it works! lol).

Its also an essential part of the 2nd generation renault immobilser.

In short a very important piece of the car.