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Headlamp wash

Discuss problems you have had or are having with your Z4
Tomsdad
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Headlamp wash

Post by Tomsdad » Wed Feb 14, 2018 12:51 pm

Just got the zed back from the paint shop. They removed and sprayed the front bumper.
Now I can't seem to get the headlamp washers to work.
Before I take the car back, just wanted to make sure I was not doing anything stupid..
If they disconnected the battery would that have done anything?

Lights on
Headlamps on
Wipers on
Multiple squirts ( up to 20) onto windscreen does not make the headlamp washers work.

I recoded with Carly last year, could I have deactivated this function?
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Roundozo
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Headlamp wash

Post by Roundozo » Wed Feb 14, 2018 1:14 pm

Sounds like they've not connected them. Can you hear the pump working for the headlight washers? Is water coming from the bottom of the bumper?
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rally-chris
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Headlamp wash

Post by rally-chris » Wed Feb 14, 2018 1:20 pm

Check that the headlamp washer pump is 1) in place on the front side of the washer bottle, and 2) plugged in to the wiring.

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ph001
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Headlamp wash

Post by ph001 » Wed Feb 14, 2018 1:53 pm

My bet would be the wiring connector is either not connected or damaged when the removed the bumper.
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srhutch
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Headlamp wash

Post by srhutch » Wed Feb 14, 2018 2:33 pm

ph001 wrote: Wed Feb 14, 2018 1:53 pmMy bet would be the wiring connector is either not connected or damaged when the removed the bumper.
There is no wiring, just the hose for the jets.
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ph001
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Headlamp wash

Post by ph001 » Wed Feb 14, 2018 2:50 pm

srhutch wrote: Wed Feb 14, 2018 2:33 pm
ph001 wrote: Wed Feb 14, 2018 1:53 pmMy bet would be the wiring connector is either not connected or damaged when the removed the bumper.
There is no wiring, just the hose for the jets.
Well I never knew that! Do they just lift on the water pressure then?
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Tomsdad
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Headlamp wash

Post by Tomsdad » Wed Feb 14, 2018 2:58 pm

there is no water under the bumper. So I guess I should check reservoir pump and connectors.
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rally-chris
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Headlamp wash

Post by rally-chris » Wed Feb 14, 2018 3:55 pm

ph001 wrote: Wed Feb 14, 2018 2:50 pm
srhutch wrote: Wed Feb 14, 2018 2:33 pm
ph001 wrote: Wed Feb 14, 2018 1:53 pmMy bet would be the wiring connector is either not connected or damaged when the removed the bumper.
There is no wiring, just the hose for the jets.
Well I never knew that! Do they just lift on the water pressure then?
Yes, there is a separate electric pump mounted on the front side of the reservoir that sends water down a pipe to the washer jet units when required. The washer jets extend up from the bumper under the pressure of the water and then squirt out of the nozzle when the lifter piston hits the end of its stroke.

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Roundozo
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Headlamp wash

Post by Roundozo » Wed Feb 14, 2018 3:59 pm

This is correct. The lowest pump is windscreen, the higher one is headlights. No electronic tomfoolery on the actual nozzles, water pressure makes them rise.
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Ducklakeview
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Headlamp wash

Post by Ducklakeview » Wed Feb 14, 2018 4:03 pm

Roundozo wrote: Wed Feb 14, 2018 3:59 pmThis is correct. The lowest pump is windscreen, the higher one is headlights. No electronic tomfoolery on the actual nozzles, water pressure makes them rise.
Which also stops them working when the level in the reservoir is low, to preserve the water for the washers, so make sure it's full when testing..

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Headlamp wash

Post by Wildfire » Wed Feb 14, 2018 4:18 pm

As DLV said, make sure your washer bottle is topped off. Also the headlamp pumps only work every few washes.
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ph001
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Headlamp wash

Post by ph001 » Wed Feb 14, 2018 5:22 pm

Wildfire wrote: Wed Feb 14, 2018 4:18 pmAs DLV said, make sure your washer bottle is topped off. Also the headlamp pumps only work every few washes.
..which is definitely codeable in Carly as have changed it myself to the minimum (every 7 IIRC), however it still washes headlamps on the first application after an ignition cycle (at least mine does). It's only subsequent ones after that on the same journey where it does it once in every 7 screen washes.
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cj10jeeper
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Headlamp wash

Post by cj10jeeper » Wed Feb 14, 2018 5:46 pm

Be sure to get them tested fully:
Lights on
Engine on
Washer reservoir full
first cycle only
Hose will need priming if bumper off and they let it drain so perhaps a few full engine on and off cycles

Nothing worse than going back and them firing first time :)
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maxman
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Headlamp wash

Post by maxman » Wed Feb 14, 2018 6:09 pm

Swap the connectors from the windscreen to the headlight to bleed the system.

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1000rr
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Headlamp wash

Post by 1000rr » Wed Feb 14, 2018 6:14 pm

Mine was doing the same when I had my bumper sprayed, it needed a good few goes with the headlights on before it worked again.... must needed priming as the water drained out from the pump and the tubes. :thumbsup:
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