Hi All

Firstly thank you fo the great forum and the wealth of knowledge you all possess and are willing to share.

I have a 2012 Audi A6 2.0tdi 130kW 8 Speed S-Tronic. Righthand drive (South Africa)

Recently had an accident... The drivers door and front wing (fender) damaged. Before the accident everything worked without issues.

The repair required the replacement of the right front door (drivers) and the front wing (fender). The drivers door shell (no internal components) was a donor from a written off vehicle. The insides were transplanted from the original door.

After the "repair", I have found the following issues with the drivers door:
1. The drivers door does not lock or unlock from the fob. The other 3 doors lock and unlock from the fob.
***If I insert the key into the lock it locks and unlocks the entire car.
***Holding the key in the open position or holding down the open button on the fob lowers all the windows and opens the sunroof
***Holding the key in the lock position or holding down the lock button on the fob raises the windows and closes the sunroof
***The red led on the locking buttons on the door card which indicate that the central locking is activated only illuminates if I open the door and then turn the key to lock whilst the door is open and then close the door

2. The driver door mirror is inoperable from the switch on the door.
***The passenger door mirror works from the switch on the drivers door.

3. The leds that illuminate the buttons on the switches don't light up either

4. All the windows work from the drivers door panel as well as their individual door switches.

I have run a diagnostic using a Launch CN X431 and have found the following errors:

19 Gateway
U019900 Lost Communication With "Door Control Module A" (passive/abiogenesis)
U020000 Lost Communication With "Door Control Module B" (passive/abiogenesis)
U020100 Lost Communication With "Door Control Module C" (passive/abiogenesis)
U020200 Lost Communication With "Door Control Module D" (passive/abiogenesis)

36 Seat Adjustment Driver Side
01331 Driver Side Door Control Module (No Signal/Communication)

42 Door Electronics Driver Side
00532 Supply Voltage (Open Circuit)
02115 Lock Unit For Central Locking (Implausible Signal)

[B]46 Central Module Comfort System
01334 Right Rear Door Ctrl. Module (No Signal/Communication)
01331 Driver Side Door Control Module (No Signal/Communication)
01333 Left Rear Door Control Module (No Signal/Communication)
01332 Frt. Pass. Side Door Control Module (No Signal/Communication)

I have checked continuity of the wiring from the Central Convenience Module to the A Pillar - From A Pillar to the Control Module - From the control Module to the Locks and other components - There is no breaks in the wiring
I have visual inspected the Central Convenience Module and the Drivers Door Control Module but cannot see any problems.
I have bench tested the Lock Actuator with a 5v supply, the motors actuate.
I have reprogrammed the Driver Door Control Module
The problem persists.....

Any ideas would be appreciated. If someone would have test values (What the actual voltages/resistance should be for each wire) for the wiring plugs in the door, that would also assist. I have searched long and hard through the www without coming up with a solution. The stealers have also had a go at it - suggested that I replace, Central Convenience Module, Drivers Door Control module, Wiring Harness Drivers Door and Lock Actuator.... Cost is in the region of R68000 or $5300