PLEASE HELP !!!! Audi A6 C7 2011 TDI location of Electronic Brake Module and airbag Module

v240gltse

hi all

its an AUDI A6 Saloon ( C7 type) and as the title says i'am having issues with these 2 modules and i think the airbag control module is under the center console but for the life of me i cant find out where the electronic brake module hides out ( a google search is not always a happy result )

thanks in advance

brendan

PsychoPete

Did you try looking in the boot for it?

v240gltse

hi , had a look around and there are a few different modules in the boot so i need to be sure . I can find the location for earlier models but not the C7

regards

https://www.boards.ie/discussion/2058215707/please-help-audi-a6-c7-2011-tdi-location-of-electronic-brake-module-and-airbag-module

airbag module location (1). Do not be fooled by DTC, this is guidance only. You need to make the real diagnostics. DTC reading is not the diagnostics

v240gltse

hi

thanks for that i'am using VCDS and got the following error report for the airbag fault, verified the seat ok by disconnecting it from teh floor socket and still a short to gnd:

1 Fault Found:

9440017 - Driver's side; side-airbag igniter 

     B100B 11 [137] - Short to Ground

     MIL ON - Confirmed - Tested Since Memory Clear

       Freeze Frame:

          Fault Status: 00000001

          Fault Priority: 2

          Fault Frequency: 1

          Mileage: 400248 km

          Date: 2021.10.29

          Time: 13:08:10

for the Electronic braking i get the following report which from looking on the web is a faulty unit ( need to go looking for its location ) but the brakes still works ok :

2 Faults Found:

590336 - Control Module Left Channel Voltage Supply 

     C1012 29 [137] - Open or Short to GND

     MIL ON - Confirmed - Tested Since Memory Clear

       Freeze Frame:

          Fault Status: 00000001

          Fault Priority: 3

          Fault Frequency: 1

          Reset counter: 21

          Mileage: 400248 km

          Date: 2021.10.29

          Time: 13:08:46

          Voltage terminal 30: 11.8 V

          Internal Fault ID: 24

          Vehicle speed: 0 km/h

          Network management state: normal

          Function light in parking brake button: On

          Red operating lamp: On

          Red warning lamp: OFF

          Green operating lamp: OFF

          Yellow warning lamp: OFF

          Terminal 15 status: On

          RWU: not active

          DSD: not active

          HTR: not active

          ECD: not active

          ACC requested apply: not active

          Auto Adjust: not active

          General Inspection Function: not active

          Internal Parking Brake state: static

          Status of parking brake button: Not operated

          Status ParkingBrake left: applied

          Status ParkingBrake right: applied

590592 - Control Module Right Channel Voltage Supply 

     C1013 29 [137] - Open or Short to GND

     MIL ON - Confirmed - Tested Since Memory Clear

       Freeze Frame:

          Fault Status: 00000001

          Fault Priority: 3

          Fault Frequency: 1

          Reset counter: 21

          Mileage: 400248 km

          Date: 2021.10.29

          Time: 13:08:16

          Voltage terminal 30: 11.8 V

          Internal Fault ID: 25

          Vehicle speed: 0 km/h

          Network management state: normal

          Function light in parking brake button: On

          Red operating lamp: On

          Red warning lamp: OFF

          Green operating lamp: OFF

          Yellow warning lamp: OFF

          Terminal 15 status: On

          RWU: not active

          DSD: not active

          HTR: not active

          ECD: not active

          ACC requested apply: not active

          Auto Adjust: not active

          General Inspection Function: not active

          Internal Parking Brake state: static

          Status of parking brake button: Not operated

          Status ParkingBrake left: applied

          Status ParkingBrake right: applied

First things first. I could start from battery to get the proper voltages. 11.8V is obviously too low. Cranking by 11.8V can lead to corrupted memory. I can not find the pinout or even the module location, only I found your more detailed story on audizine website.

If you find that module

Address 53: Parking Brake (----) Labels: 4H0-907-801.clb

Part No SW: 4H0 907 801 E HW: 4H0 907 801 A

Component: EPB-4 H03 0012

Then try to figure out the powers and grounds. May be other day I have better luck on google, now late hour

v240gltse

hi

many thanks for the help and will keep you updated.

regards

brendan

I told to you, need only better day and I can find the bastard :P Number 6. There is 2 different mounting systems, retaining frame and nut(s). Removing is easy but if you have nut(s) then torque is only 3Nm. Such a small torque I like to use locktite and "torque" until everything is mounted flat, no movement.

v240gltse

hi

thanks a million for that , It gave me the right place to start looking it. Its actually buried deep under so what you have to do is to ( sorry didn't have my camera with me at the time ). A 2nd hand unit cured that issue so now i'am just left with the Airbag light issue.

1. remove the fuse panel ( will need to remove a10mm nut first )
2. Slide out the parking sensor module from its cradle
3. undo the remaining 3 10mm nuts holding the frame in place and set aside
4. You can then see the Electronic Brake module attached to the floor.
5. undo the 2 securing nuts and remove.
6. replace the module ( no coding is required ) and reassemble everything.

hope this helps someone else.

regards

brendan