98Quattro

Ok so I've had multiple issues with my wife's A6. I finally downloaded VCDS-Lite from Ross-Tech and used my buddy's VAG cable to read the car.

I currently have ABS and brake lights on but my VCDS can't communicate with the ABS controller. Does that mean the ABS module is toast?

I also have an Airbag light and same issue with ABS...can't communicate with Airbag controller.

Here are the codes I did get:


Address 01: Engine Labels: 078-907-551-AHA.lbl
Part No: 4D0 907 551 AH
Component: 2.8L V6/5V MOTR AT D01
Coding: 06252
Shop #: WSC 23261
VCID: 6CCACC42360D

1 Fault Found:
16795 - Secondary Air Injection System: Incorrect Flow Detected
P0411 - 35-10 - - - Intermittent
Readiness: 0000 0000

-------------------------------------------------------------------------------
Address 02: Auto Trans Labels: 01V-927-156.lbl
Part No: 4B0 927 156 G
Component: AG5 01V 2.8l5V USA 8509
Coding: 00000
Shop #: WSC 00000
VCID: 2B480F5EF383

1 Fault Found:
00526 - Brake Light Switch-F
27-00 - Implausible Signal


-------------------------------------------------------------------------------
Address 35: Centr. Locks Labels: 4B0-962-258.lbl
Part No: 4B0 962 258 C
Component: Central Lock/Alarm D29
Coding: 15885
Shop #: WSC 02324
VCID: 2944F556F97F

4 Faults Found:
01370 - Alarm triggered by Interior Monitoring
35-00 - -
01559 - Drivers Door
58-10 - Can't Lock - Intermittent
01561 - Left Rear Door
58-10 - Can't Lock - Intermittent
01559 - Drivers Door
59-10 - Can't Unlock - Intermittent



-------------------------------------------------------------------------------
Address 45: Inter. Monitor Labels: 4B0-951-173.lbl
Part No: 4B0 951 173
Component: Innenraumueberw. D01
Coding: 00001
Shop #: WSC 00000
VCID: E0D228724AC5

1 Fault Found:
01381 - Alarm triggered by Anti-Theft Sensor; Rear Right
35-00 - -

-------------------------------------------------------------------------------


End ---------------------------------------------------------------------


Can anybody help me out? Do these codes give out actual part numbers of parts I need to replace?

If I reset the locking codes, will that fix my driver's door locking problem?

thanks in advance.

98Quattro

Anybody??

johnkk

I have a hunch that your brake light switch(on brake pedal mount) is causing the ABS and brake lightr problem. Common issue and fairly ez to replace.

Clear the interior motion codes and they will go away. All that means is that the motion sensor triggered the alarm sometime. Probably when you left a window open on a windy day and locked the car.

Do you have any door locking symptoms? phantom door locking and unlocking?
If so, door locking issue might be the micro switch in the driver door near the lock starting to go. If you're thrifty, this $2 switch can be replaced with a Radio Shack contact switch and mounted down near the bottom of the door. The non-kluge approach is to replace the door locking mechanism, which I did. $179 with discount from dealer. Took me about 2hrs to remove the door trim, window module, and loosen the handle to get the locking mechanism out. Could do it in less than an hour second time.

May also be some harness issues.

Clear the air injection code and see if it comes back. Not sure what it is since I think my 2.7 is different. My wife's 4.2 Touareg threw a code like this a couple of years ago and it never came back.

98Quattro

Yes, the locking issue I have is that with the remote, the driver's door won't lock or unlock. The remote will lock and unlock all the other doors. So to lock all doors we have to put the key in the whole to lock and unlock the driver door. At firts both the driver and left rear doors wouldn't lock or unlock but miraculously the left rear door works fine.

AS for the secondary air pump, i've had this code for some time and am sure it's a bad air pump. During the summer with the AC on the car sounds like a vacuum cleaner.

If the controller for the ABS won't communicate at all doesn't this indicate a bad ABS module?

4Driver4

[QUOTE=98Quattro;24132831]my VCDS can't communicate with the ABS controller. Does that mean the ABS module is toast?

[QUOTE]

Yes. Send it out for rebuild and clear all codes everywhere.

With the ABS controller unplugged, take another shot at connecting with the Airbag controller.

Check the door hinge on the drivers door for broken wires.

jschick

also when you scan the Auto trans you must put your foot on the brake or you get the code for the switch, so ignore the brake switch code.

98Quattro

[QUOTE=4Driver4;24133604][QUOTE=98Quattro;24132831]my VCDS can't communicate with the ABS controller. Does that mean the ABS module is toast?

Thanks 4D4! I was waiting for you to chime in. Thanks to everyone.

ONe more question: If I clear the central locking codes, will my driver's door begin to work again? or could it be a bad power locking switch?

4Driver4

Unlikely.
The measuring blocks in VAG-COM provide a ton of info on individual functions. Try to borrow one or consider an upgrade.

98Quattro

When you say "with the ABS controller unplugged" do you mean the ABS Module?

4Driver4

Yup. Same thing.