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Headlight washers

 
Old 10-20-2018, 12:13 PM
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Default Headlight washers

I found the one thing that doesn't work on my new to me 2014 A8. The headlight washers pop out properly when requesting wash while lights are on BUT:
1- They don't spray fluid
2- They don't retrack back into the bumper. Have to manually push both in at the same time, then they stay in.
My questions are:
What causes the jets/nozels to protrude from and retract back into the bumper? Is it hydrolic or is it the pump that supplies the washer fluid?
The manual tells me that there is a single 35amp fuse for windsheild/headlight washer so I can't simply pull the fuse and just go without the headlight washer (which would be OK with me)
Might there be dried fluid build-up clogging the ports which does not allow them to spray and in turn does not releive the pressure and allow jets to retrack back into bumper?
I believe I read that someone cleared these nozels with air compressor.
i do understand the pump could be out which is why it won't spray which is why I asked what works the nozzels.
I believe there are separate page for the windsheild and headlight washers.
Any help with this would be appreciated. As we all know WINTER IS COMMING.

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Last edited by Pointman911; 10-20-2018 at 02:04 PM.
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Old 10-20-2018, 12:40 PM
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Headlight Washers. The most useless feature of any car I've owned, no matter the brand.
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Old 10-20-2018, 04:06 PM
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Is it possible to code this out via vcds?
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Old 10-21-2018, 05:21 PM
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Originally Posted by RED HORSE View Post
Headlight Washers. The most useless feature of any car I've owned, no matter the brand.
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Old 10-21-2018, 07:57 PM
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@Pointman911: Yes there are options to change headlight washer frequency or even complete deactivation via VCDS:
to deactivate completely (from German STG= Steuergeraet) - I don't know the exact wording in English:

a) select STG 09 (electrical system)
b) STG access authorization -> function 16
c) Enter access code 20113
d) STG adaptation -> function 10
e) channel 20
f) set to 00
g) STG long encoding - function 07
h) byte 18
i) deactivate bit 0

That should work.
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Old 10-22-2018, 03:14 AM
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Originally Posted by Phil68 View Post
@Pointman911: Yes there are options to change headlight washer frequency or even complete deactivation via VCDS:
to deactivate completely (from German STG= Steuergeraet) - I don't know the exact wording in English:

a) select STG 09 (electrical system)
b) STG access authorization -> function 16
c) Enter access code 20113
d) STG adaptation -> function 10
e) channel 20
f) set to 00
g) STG long encoding - function 07
h) byte 18
i) deactivate bit 0

That should work.
I turned it off yesterday using this approach. Thanks for your input. I often get frustrated after searching so long without googling my problem in the proper way and then find the resolution right after I post the question.
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Old 02-13-2019, 07:44 AM
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Hmmm...I wonder if OBDEleven can deactivate the headlight washers also.
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Old 02-13-2019, 01:27 PM
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Originally Posted by RED HORSE View Post
Headlight Washers. The most useless feature of any car I've owned, no matter the brand.
So true. Especially when the nozzle sprays up all over your freshly cleaned hood.
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Old 02-13-2019, 07:28 PM
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Or...when headlights on keep squirts brief and then repeat as wipers go through each pass. How I can usually avoid a lot of wasted headlight washes, or at least did on D3 when I got used to faking it out
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