A8 Parts Forum  

Go Back   A8 Parts Forum > A8 D3 > D3 - Everything Else

D3 - Everything Else Anything that doesnt fit elsewhere

Reply
 
Thread Tools Display Modes
  #1  
Old 24th April 2018, 07:12 AM
mannyo mannyo is offline
Senior Member
 
Join Date: Jan 2012
Location: Blandford, Dorset
Posts: 1,974
Default MY 2004 D3 electrical gremlins

I think my D3 is telling me its time to be sold, I have had her for 4 and half years now.

Latest problem.

Driving in stop and start traffic, out of the blue up will pop a series of faults on the DIS in the following order.

Headlight range control defective
Parking Brake Fault
And another I cannot remember.

ABS and ESP lights then come on in addition to the warning, and you cannot engage ACC cruise control.

The parking brake still works perfectly fine, if you turn off the engine before engaging.

I drove for three hours yesterday morning in regular traffic, and the car drove perfectly with no faults. I got stuck in traffic going to work, and within just a few minutes up pop the faults. The only thing I can think of is that in traffic the brake pedal is being used a lot more than when in motion, can a faulty brake switch cause this?
__________________
Manny
2004 A4 1.8T Sport Cabriolet, 89K Miles
Past
2004 D3 A8 3.7 Quattro, Xenon, Bose, Blinds, Solar Sunroof, TV, ACC, phone and almost every option. 168K miles rising slowly
with retrofit AMI and DVB-T in place of Analogue
2003 Volvo S60 D5 SE Manual, 197K miles.
2001 D2 A8 3.7 QS, Bi-Xenon, Bose, Blinds, Electric Everything, retrofitted RNS-D, 191K Miles
Reply With Quote
  #2  
Old 24th April 2018, 08:46 AM
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 mannyo View Post
can a faulty brake switch cause this?
Yes it can - and has done to my D3 - or at least the ABS and ESP lights part can be (I think that the Headlight range and Parking brake may well be seperate faults)
and the brake switch isn't too expensive or difficult to change so I'd definitely start with that first

Your adaptive cruise won't work of there is known issues with the ABS and ESP for safety reasons I would have thought
__________________

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; 24th April 2018 at 08:48 AM.
Reply With Quote
  #3  
Old 24th April 2018, 09:59 AM
Delboy's Avatar
Delboy Delboy is offline
Senior Member
 
Join Date: Aug 2013
Location: Lowestoft, Suffolk
Posts: 2,492
Default

I agree with Neil, first stop would be VCDS scan to see what errors are logged as brake switch defects will be logged in that
__________________
Del

Reply With Quote
  #4  
Old 24th April 2018, 10:29 AM
mannyo mannyo is offline
Senior Member
 
Join Date: Jan 2012
Location: Blandford, Dorset
Posts: 1,974
Default

I've got an old dodgy copy of vcds, I'll try and scan the car later and post the results.
__________________
Manny
2004 A4 1.8T Sport Cabriolet, 89K Miles
Past
2004 D3 A8 3.7 Quattro, Xenon, Bose, Blinds, Solar Sunroof, TV, ACC, phone and almost every option. 168K miles rising slowly
with retrofit AMI and DVB-T in place of Analogue
2003 Volvo S60 D5 SE Manual, 197K miles.
2001 D2 A8 3.7 QS, Bi-Xenon, Bose, Blinds, Electric Everything, retrofitted RNS-D, 191K Miles
Reply With Quote
  #5  
Old 24th April 2018, 11:07 AM
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 mannyo View Post
I've got an old dodgy copy of vcds, I'll try and scan the car later and post the results.
I'll be down to Beaulieu at the weekend on Sunday at the show otherwise Manny and will happily catch up and plug in my vagcom for you somewhere if that helps, just let me know
__________________

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
  #6  
Old 24th April 2018, 09:58 PM
Joe2.0E Joe2.0E is offline
Senior Member
 
Join Date: Feb 2012
Location: Ireland
Posts: 428
Default

I wouldn't be certain about the brake switch, when mine went the gearbox went into limp mode. I drove it to the garage thinking the gearbox was toast. I was thrilled to be told it just needed a brake switch.
Reply With Quote
  #7  
Old 29th April 2018, 12:01 PM
mannyo mannyo is offline
Senior Member
 
Join Date: Jan 2012
Location: Blandford, Dorset
Posts: 1,974
Default

Today I finally got around to scanning the car. Sorry i am not Beulieu, I've got a job application to finish off and my CV as unemployment looms.

I have attached the log, but aside from the usual issues my D3 has and those relating to low battery as the car is hardly used one stands out like a sore thumb.

Address 03: ABS Brakes Labels: 4E0-910-517.lbl
Part No SW: 4E0 910 517 A HW: 4E0 614 517 A
Component: ESP 5.7 allrad H29 0420
Coding: 0008597
Shop #: WSC 02313 000 00000
VCID: 214DE1B78159

1 Fault Found:
00290 - ABS Wheel Speed Sensor; Rear Left (G46)
012 - Electrical Fault in Circuit - Intermittent

That is the obvious stand out, how easy is that sensor to sort or check the wiring connections?

Perhaps if someone else could review the whole log I would feel happier.

With the fault present I can clear the ABS sensor fault but as soon as you close the controller it returns. However after the car has gone fully to sleep the fault is no longer current and will drive fine again until it recurs.
Attached Files
File Type: txt Scan2904.txt (29.4 KB, 1006 views)
__________________
Manny
2004 A4 1.8T Sport Cabriolet, 89K Miles
Past
2004 D3 A8 3.7 Quattro, Xenon, Bose, Blinds, Solar Sunroof, TV, ACC, phone and almost every option. 168K miles rising slowly
with retrofit AMI and DVB-T in place of Analogue
2003 Volvo S60 D5 SE Manual, 197K miles.
2001 D2 A8 3.7 QS, Bi-Xenon, Bose, Blinds, Electric Everything, retrofitted RNS-D, 191K Miles

Last edited by mannyo; 29th April 2018 at 12:07 PM.
Reply With Quote
  #8  
Old 29th April 2018, 12:39 PM
Delboy's Avatar
Delboy Delboy is offline
Senior Member
 
Join Date: Aug 2013
Location: Lowestoft, Suffolk
Posts: 2,492
Default

Well as you suspect I'd say most of that will clear ok other than the abs sensor and level control pressure and temp warning I would be too concerned.

the abs sensor may be faulty but worth checking the contacts for grime or corrosion.

The door handles quite possibly are dragging down the battery.

The rear parking sensor can be changed assuming its it at fault without removing the bumper, well it can be on the S8 bumper.

Once you sort the the abs out the headlight and acc should start behaving too.
__________________
Del

Reply With Quote
  #9  
Old 29th April 2018, 06:02 PM
mannyo mannyo is offline
Senior Member
 
Join Date: Jan 2012
Location: Blandford, Dorset
Posts: 1,974
Default

The level control pressure sensor one I had before, and I had the bagpipingandy rebuild kit fitted more than 4 years ago. The cause then was low pressure output from the compressor.

The overtemp must be caused by the system trying to build up pressure after not being run for nearly 2 weeks. Whilst left for this long the car does drop a little.

I maybe selling the car soon, but I do want to have a car that does not beep loudly in slow or stationary traffic. As it stands now, it may well fail the MOT as it is unpredictable how long the ABS light remains off after starting the car, and the next MOT is due soon.
__________________
Manny
2004 A4 1.8T Sport Cabriolet, 89K Miles
Past
2004 D3 A8 3.7 Quattro, Xenon, Bose, Blinds, Solar Sunroof, TV, ACC, phone and almost every option. 168K miles rising slowly
with retrofit AMI and DVB-T in place of Analogue
2003 Volvo S60 D5 SE Manual, 197K miles.
2001 D2 A8 3.7 QS, Bi-Xenon, Bose, Blinds, Electric Everything, retrofitted RNS-D, 191K Miles
Reply With Quote
  #10  
Old 30th April 2018, 09:37 AM
mattylondon mattylondon is offline
Senior Member
 
Join Date: Apr 2014
Location: Norwich & L'viv
Posts: 1,673
Default

Quote:
Originally Posted by mannyo View Post
00290 - ABS Wheel Speed Sensor; Rear Left (G46)
012 - Electrical Fault in Circuit - Intermittent
Wheel bearing?
__________________
Matt

2004 A8 3.7q, 1998 A4 2.8q, 1994 Coupe 2.8q SORN,
Reply With Quote
Reply

Thread Tools
Display Modes

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 02:20 PM.


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