A8 / S8 (D3 Platform) Discussion Discussion forum for the D3 Audi A8 produced from 2003-2010 and Audi S8 produced from 2006-2010

Rain sensor

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Old Sep 2, 2019 | 10:31 AM
  #1  
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Default Rain sensor

I have the sensor facing the wind screen in the roof but it do not seem to be activated. I now put the wiper to position 1 and adjust the time with the switch on the position handle. How do i activate the rain sensor?

Steve
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Old Sep 4, 2019 | 12:41 AM
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is it a fitted option, what year ?
Have a look in your build code see if its even fitted
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Old Sep 4, 2019 | 12:53 AM
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2004, can see the sensor in front (window side of the humidity sensor cover).
Steve
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Old Sep 4, 2019 | 01:21 AM
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You will need vcds to activate it if it indeed install.
But check your build sheet first.
Also the silicone thing it sits on could have turns to mush
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Old Sep 4, 2019 | 01:27 AM
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update, NO rain sensor was available in a pre-facelift car. Only a light sensor.

Second, rain and light and the light only sensor are coded and wired differently.

I will type the whole thing out for others to use as many of the pages on this topic are not in english.

The Light only sensor looks and works differently to the rain/light and is coded in the roof module only.
Help with retrofitting auto lights - A8 Parts Forum
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Old Sep 5, 2019 | 01:53 PM
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Originally Posted by storka
update, NO rain sensor was available in a pre-facelift car. Only a light sensor.

Second, rain and light and the light only sensor are coded and wired differently.

I will type the whole thing out for others to use as many of the pages on this topic are not in english.

The Light only sensor looks and works differently to the rain/light and is coded in the roof module only.
Help with retrofitting auto lights - A8 Parts Forum
I tought the sensor in the midle of the top dash was for lights🧐 I read through your link and see if its worth it😊
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Old Sep 6, 2019 | 10:39 PM
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I retro fitted them ( auto lights and rain sensor).
don't know if it was worth all the drama.
works fine but get eror codes .
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