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D3 - Common Faults Quick links to all known common faults and their solutions

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  #1  
Old 18th December 2017, 08:53 AM
lackovicj lackovicj is offline
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Default ESP, ABS, Brake light

Hi

There is always something to look at... Today while driving to work (in a traffic)
ESP,ABS , brake warning came on the dash and also I am not able to lift the car. The car drives and brakes normal but there is obviously something going on.

In last 5 months, the ESP light came on twice however after re-starting the car all was fine.
A month ago the ESP. ABS, Brake error came on the dash and after restarting the car everything was fine since.

Sadly I restarted the car when I parked up at work but the error is still there.

Any ideas what that could be?? I read something about brake light switch which might be causing it.

Thank you
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Audi A8 D3 2003 3.7 V8 petrol, Oyster gray with black interior
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  #2  
Old 20th December 2017, 11:57 AM
PsYcHe PsYcHe is offline
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Default

A scan will help to pinpoint it. I had a wheel bearing go which mashed an ABS sensor, causing similar errors.
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  #3  
Old 20th December 2017, 01:04 PM
lackovicj lackovicj is offline
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Default Scan

Please see the scan..since the error has occured most of the modules show malfunction.. I am currently on holiday in slovakia where most of the audi,skoda,vw parts comming from. One of the mechanics also said replacing brake light switch (which i just bough OEM for 13euros)might fix it.
I am still open to any suggestions.
Thank you
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Audi A8 D3 2003 3.7 V8 petrol, Oyster gray with black interior
19" alloy, Sport suspension transmission and seats, HID headlights, Phone in armrest, 4zone AC, Sat-Nav, TV, Dimmable exterior mirrors, VCDS

Previous : Chevrolet Blazer 2001 LT 4.3 petrol
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  #4  
Old 20th December 2017, 07:09 PM
Pug Pug is offline
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Default

Yeah, looks like brake light switch
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  #5  
Old 6th January 2018, 03:07 PM
lackovicj lackovicj is offline
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Default fault

Happy New year

...so I am back with an update. I recently bought the brake light switch which didn't solve the ABS,ESP,speedo problem. It turned out is a controller on the ABS pump, as the A8 permanently had error lights on and VAG pointed out the controller.
I have decided to remove the controller (black plastic box as on picture) and try to fix it. I am telling you is a pain to open the box. resoldered all hair thin connections (they are not even visible in the picture) and also the ticker silver connections (8 approx) tested connections with a multimeter all good. sealed it back and re-installed it back to the car,,, sadly communication with the controller still persist(I guess is one of the chips is faulty), so sourced matching pump+controller from Prestige Motor Services and swapped the controller only.. Connected VAG and read the controller so happy times, ECU is communicating with ABS. however when I try to code the controller(same codes as on the old one) it does go through "Coding accepted" but once I close the controller reopen ABS Brakes the coding is gone. Does anybody have an idea why is that??
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Audi A8 D3 2003 3.7 V8 petrol, Oyster gray with black interior
19" alloy, Sport suspension transmission and seats, HID headlights, Phone in armrest, 4zone AC, Sat-Nav, TV, Dimmable exterior mirrors, VCDS

Previous : Chevrolet Blazer 2001 LT 4.3 petrol
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  #6  
Old 16th January 2018, 05:26 PM
lackovicj lackovicj is offline
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Default

The code has bee accepted, I took the car for a spin and in about 4 min dashboard beeped and ESP,ABS light gone...So all good.
Another job done.
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Audi A8 D3 2003 3.7 V8 petrol, Oyster gray with black interior
19" alloy, Sport suspension transmission and seats, HID headlights, Phone in armrest, 4zone AC, Sat-Nav, TV, Dimmable exterior mirrors, VCDS

Previous : Chevrolet Blazer 2001 LT 4.3 petrol
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