Some quick help with the headlight wash/wipe

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Gert_8
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Mon Jul 18, 2022 2:59 pm

Hi All,

My car is at the dealer having it's soft-top re-synchronized. I have done this myself, in the past, but couldn't be bothered to track the fault this time, when I replaced the broken open/close switch.

However, I digress, the garage has got the roof working as it should, but while it is with them, I wanted them to get the headlamp wash/wipe system working too.

They reckoned it needed a control module, which has been fitted, but it still doesn't work. They are fitting a new module tomorrow.

Does anyone have a video of a working system and does it only work when the lights are on? I can't remember, and the techs are all younger than the cars, these days, so they have no working knowledge.

Thanks.
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PONY, 2013 - "Anyway span 360 degrees hitting the kerb and giving the old man two fingers as I was spinning like Michael Schumacher would
Gert_8
Married to the E30 Zone
Married to the E30 Zone
Posts: 11304
Joined: Mon Dec 08, 2008 11:00 pm
Location: In your back passage faster than a rat up a drainpipe!

Mon Jul 18, 2022 3:24 pm

I think I found what I was looking for from Brian Moooore:

"The headlamp wash/wipe should be activated every fifth time the normal washers are used when the lights are on, but five times in short succession doesn't work.
Once the two headlamp wiper motors have received a start pulse, there operation is entirely autonomous. They complete there pre programmed sequence, including operating the washer pump, with no further input".
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PONY, 2013 - "Anyway span 360 degrees hitting the kerb and giving the old man two fingers as I was spinning like Michael Schumacher would
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flybynite
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Joined: Sat Dec 02, 2017 11:00 pm

Mon Jul 18, 2022 3:57 pm

Gert_8 wrote:
Mon Jul 18, 2022 3:24 pm
I think I found what I was looking for from Brian Moooore:

"The headlamp wash/wipe should be activated every fifth time the normal washers are used when the lights are on, but five times in short succession doesn't work.
Once the two headlamp wiper motors have received a start pulse, there operation is entirely autonomous. They complete there pre programmed sequence, including operating the washer pump, with no further input".
Yeah that's how it works, difficult to test in practice. Handbook only says pull the stalk with headlights on.
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