Home Technical Discussions Audi A8, A8 L: 2004 and later (D3)

Audi A8, A8 L: 2004 and later (D3) I get "Light sensor failure" warning light when I turn on the light switch

Reply to this Thread Reply to this Thread Search Forum Search Forum Back to Thread List Back to Thread List

Permlink Replies: 2 - Pages: 1
Last Post: Mar 13, 2009 3:44 PM Last Post By: Astle
barrykir

Posts: 2
Registered: 01/06/09
I get "Light sensor failure" warning light when I turn on the light switch
Posted: Jan 27, 2009 2:35 PM
  Click to reply to this thread Reply
Hi All
I have an early version of the 2004 A8L. The light sensor is different from the later 2004s. The side view mirrors get dark as soon as I turn on the car (day or night) and the rear view mirror never darkens. I replaced the light recognition sensor ($150) but that didn't do it. Any suggestions?
barrykir

Posts: 2
Registered: 01/06/09
Re: I get "Light sensor failure" warning light when I turn on the light switch
Posted: Feb 15, 2009 2:43 PM   in response to: barrykir in response to: barrykir
  Click to reply to this thread Reply
If the battery gets low or is replaced the whole system needs to be reset. On my A8L 2004 the only way I could do that is to pull all the fuses on the passengers side.
Astle

Posts: 6
Registered: 11/20/09
Re: I get "Light sensor failure" warning light when I turn on the light switch
Posted: Mar 13, 2009 3:44 PM   in response to: barrykir in response to: barrykir
  Click to reply to this thread Reply
You have to re-boot the light sensor system. I did this by removing the fuses for 10 seconds and then reinstalling. (I did ALL of the fuses, one at a time.) My rear view mirror didn't work, replaced the sensor.... still didn't work, the a mechanic told me to re-boot) Since re-booting, mirror has worked perfectly for over a year!
Pages: 1
Back to Thread List Back to Thread List

Point your RSS reader here for a feed of the latest messages in all forums