A8 Parts Forum  

Go Back   A8 Parts Forum > A8 D2 > D2 - Lights

D2 - Lights Headlights, xenons, foglights. Everything outside the car that glows

Reply
 
Thread Tools Display Modes
  #1  
Old 23rd July 2012, 05:58 PM
Karstad Karstad is offline
Junior Member
 
Join Date: Mar 2012
Location: Norway
Posts: 13
Default Foglight error

On my audi A8 d2 3.3 TDI the fog lights just stopped working one day. The fuse on the passenger side is ok, aswell as the bulbs. What is the problem?
When i push the foglight switch nothing happens, its dead. not even a light comes on inside dashboard.

Any ideas?
Reply With Quote
  #2  
Old 23rd July 2012, 06:05 PM
Architex_mA8tey's Avatar
Architex_mA8tey Architex_mA8tey is offline
Moderator
 
Join Date: Jan 2009
Location: London/Oxford/Swindon
Posts: 7,648
Default

relay or wiring broken?
__________________

Confidence is the feeling you have before you know better . . . .
Audi A8 D2 3.7 Quattro Sport 1999 FL - Melange
2nd Place Winner - A8-Freunde Annual German Meet 2012 at Edersee
20" x 9" Bentley GTC Wheels with 385mm W12 Front Discs & Bentley Caliper Covers, Front Lowered on Coilovers, Xenons, Combined DRLs and LED Foglights to modified OEM front fog lamp position, Alcantara/Leather, Full Black Alcantara headlining + pillars and blind shelf, Bespoke Flat Bottomed Sports Steering Wheel, Dark Myrtle Wood, Autodim Mirrors, Bose, Blinds, Digital TV, Ski Hatch, Modified rear exhaust section for extra V8 Burble
Audi S8 D2 Final Edition 2002, Avus Silver with Red Leather Interior
Tiptronic with Sport mode button, Sony rear entertainment package, Bose sound system, Audi Navigation Plus, 20 inch Final Edition alloys, Full Cat Back Stainless Milltek exhaust, giving a great V8 burble
Audi A8L D2 4.2 Petrol with LPG - Ebony Black
Audi A8L D4 FL 4.0T Petrol twin turbo - Havana Black
Audi A2 1.6 FSi Sport - Dolphin Grey with Votex body kit and Red Leather Interior
and some other A8's A8L's and Mercs
Reply With Quote
  #3  
Old 23rd July 2012, 06:10 PM
Karstad Karstad is offline
Junior Member
 
Join Date: Mar 2012
Location: Norway
Posts: 13
Default

don't think its the wiring because it happened so fast. i started the engine, switched one the lights and hit the foglight switch. The green light came on for less then a second and haven't worked since.

Where can i find the relay?
Reply With Quote
  #4  
Old 23rd July 2012, 10:18 PM
Architex_mA8tey's Avatar
Architex_mA8tey Architex_mA8tey is offline
Moderator
 
Join Date: Jan 2009
Location: London/Oxford/Swindon
Posts: 7,648
Default

Quote:
Originally Posted by Karstad View Post
don't think its the wiring because it happened so fast. i started the engine, switched one the lights and hit the foglight switch. The green light came on for less then a second and haven't worked since.

Where can i find the relay?
Its on the relay board (item 2 on the pic shown) which is under a wooden cover plate in the passenger footwell
Relay is part No 8D0907701A
control unit for fog lights and rear fog light / relay location/code no.:
3+8/397 /

Attached Thumbnails
Click image for larger version

Name:	Relay board.png
Views:	2160
Size:	15.4 KB
ID:	4096  
__________________

Confidence is the feeling you have before you know better . . . .
Audi A8 D2 3.7 Quattro Sport 1999 FL - Melange
2nd Place Winner - A8-Freunde Annual German Meet 2012 at Edersee
20" x 9" Bentley GTC Wheels with 385mm W12 Front Discs & Bentley Caliper Covers, Front Lowered on Coilovers, Xenons, Combined DRLs and LED Foglights to modified OEM front fog lamp position, Alcantara/Leather, Full Black Alcantara headlining + pillars and blind shelf, Bespoke Flat Bottomed Sports Steering Wheel, Dark Myrtle Wood, Autodim Mirrors, Bose, Blinds, Digital TV, Ski Hatch, Modified rear exhaust section for extra V8 Burble
Audi S8 D2 Final Edition 2002, Avus Silver with Red Leather Interior
Tiptronic with Sport mode button, Sony rear entertainment package, Bose sound system, Audi Navigation Plus, 20 inch Final Edition alloys, Full Cat Back Stainless Milltek exhaust, giving a great V8 burble
Audi A8L D2 4.2 Petrol with LPG - Ebony Black
Audi A8L D4 FL 4.0T Petrol twin turbo - Havana Black
Audi A2 1.6 FSi Sport - Dolphin Grey with Votex body kit and Red Leather Interior
and some other A8's A8L's and Mercs

Last edited by Architex_mA8tey; 23rd July 2012 at 10:26 PM.
Reply With Quote
  #5  
Old 24th July 2012, 06:30 AM
Karstad Karstad is offline
Junior Member
 
Join Date: Mar 2012
Location: Norway
Posts: 13
Default

found it, thanks
how do i check if its broken?
Reply With Quote
  #6  
Old 24th July 2012, 07:48 AM
Karstad Karstad is offline
Junior Member
 
Join Date: Mar 2012
Location: Norway
Posts: 13
Default

Does anyone know how to get the foglight switch out?
think the switch is broken since the rear foglight switch works.
Reply With Quote
  #7  
Old 24th July 2012, 10:01 AM
Architex_mA8tey's Avatar
Architex_mA8tey Architex_mA8tey is offline
Moderator
 
Join Date: Jan 2009
Location: London/Oxford/Swindon
Posts: 7,648
Default

its just a slow lever job with a trim tool or screwdriver to each side of the switch and it will pop out - but make sure you protect the wood carefully

Attached Thumbnails
Click image for larger version

Name:	Fog Light Switch.png
Views:	1251
Size:	15.3 KB
ID:	4097  
__________________

Confidence is the feeling you have before you know better . . . .
Audi A8 D2 3.7 Quattro Sport 1999 FL - Melange
2nd Place Winner - A8-Freunde Annual German Meet 2012 at Edersee
20" x 9" Bentley GTC Wheels with 385mm W12 Front Discs & Bentley Caliper Covers, Front Lowered on Coilovers, Xenons, Combined DRLs and LED Foglights to modified OEM front fog lamp position, Alcantara/Leather, Full Black Alcantara headlining + pillars and blind shelf, Bespoke Flat Bottomed Sports Steering Wheel, Dark Myrtle Wood, Autodim Mirrors, Bose, Blinds, Digital TV, Ski Hatch, Modified rear exhaust section for extra V8 Burble
Audi S8 D2 Final Edition 2002, Avus Silver with Red Leather Interior
Tiptronic with Sport mode button, Sony rear entertainment package, Bose sound system, Audi Navigation Plus, 20 inch Final Edition alloys, Full Cat Back Stainless Milltek exhaust, giving a great V8 burble
Audi A8L D2 4.2 Petrol with LPG - Ebony Black
Audi A8L D4 FL 4.0T Petrol twin turbo - Havana Black
Audi A2 1.6 FSi Sport - Dolphin Grey with Votex body kit and Red Leather Interior
and some other A8's A8L's and Mercs
Reply With Quote
  #8  
Old 24th July 2012, 10:09 AM
david@a8parts david@a8parts is offline
Director at A8 Parts
 
Join Date: Jan 2009
Posts: 133
Default

You might find it easier to prise out the centre vent above - it is just pushed in so comes out easily without the need to undo anything - use a flat blade butter knife or similar and work it out a centimetre at a time at each end. Once you have it out there should be just enough cable on the vent to settle it upside down on the dashboard then you can simply push the switches out from behind the wood trim.

It might sound a long winded way but the switches arent that easy to get out from the front in our experience
__________________
At Work to Break:

2001 TT 8N 1.8T Quattro with a loud exhaust!
2000 A8 D2 3.7Q Non Sport Ming Blue
1999 A8 D2 4.2Q Non Sport Santorin Blue
2002 A6 C5 Allroad 2.5 TDi Silver with Black Leather
2001 A2 1.4 TDi
2006 A6 C6 2.4 Quattro Avant Canyon Red



At Work to Drive:

1997 S8 Pearl White Solar Roof, Electric Heated Rear Seats, Blinds, Bose, Cruise, Headlamp Wash, Ski Hatch
1998 Audi Cabriolet 2.6, Air Con, Electric Roof, Leather, Hard Top, Headlight Wash
2008 Fiesta Sportvan x2
2002 Transit 2.4 LWB
2007 VW Crafter Recovery Truck
2013 VW Caddy Highline, DAB, Heated Seats, Touch Screen Stereo, Headlamp Wash and Webasto with Telestart
2010 RS6 Daytona Grey, Twin Pane, Sunroof, Adaptive Cruise, Soft Close and some extra horses.

At Work to Hire:

4x 6 Berth Sunlight Motorhomes
Reply With Quote
  #9  
Old 24th July 2012, 11:37 AM
Karstad Karstad is offline
Junior Member
 
Join Date: Mar 2012
Location: Norway
Posts: 13
Default

i removed the vent and it was no problem, thanks.
Nothing wrong with the switch tho I'm all out of ideas now..
Reply With Quote
  #10  
Old 24th July 2012, 07:29 PM
sloss's Avatar
sloss sloss is offline
Senior Member
 
Join Date: Jan 2009
Location: Aberdeen
Posts: 505
Default

Use a multi meter to find where you have 12volts or not as the case may be.

As you have the switch out how did you test it?

How did you check the relay?

I'd start at the foglamps themselves - there should be 12v across the 2 wires with ign on, switch on and sidelights on.
__________________
Men have feelings too. For example we feel hungry.....
Reply With Quote
Reply


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT. The time now is 11:06 AM.


Powered by vBulletin® Version 3.8.0
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.