Replacing Rear-End Electronics Control Unit

Information 

All remote controls (keys) are required for teaching a DME, rear-end electronics (rear BCM), electronic steering lock (ELV) control unit for example, or for teaching remote controls (keys).

Remote controls (keys) that are not taught during this teaching procedure will no longer be recognised by the vehicle.

Information 

The terms "Ignition on" and "Starting engine" are re-defined for fully electric vehicles (battery electric vehicles - BEV).

Establishing operational readiness/Ignition on: 

Prerequisites for establishing operational readiness: High-voltage battery is sufficiently charged, remove vehicle charging cable from the vehicle charge port, put driver's key in the emergency start tray.

Establishing operational readiness automatically: Get into the vehicle and close the driver's door. The driver's key is recognised inside the vehicle. Operational readiness is established.

Establishing operational readiness manually: Press Start/Stop switch. The driver's key is recognised inside the vehicle. Operational readiness is established.

Establishing operational readiness/Starting engine: 

Establish operational readiness and engage transmission range. The vehicle is now ready to drive and can be moved.

Ending operational readiness/Switching off ignition 

Ending operational readiness automatically: Get out of the vehicle with the driver's key and close the driver door. The driver's key is no longer detected outside the vehicle. Operational readiness ends.

Ending operational readiness manually: Press Start/Stop switch until the instrument cluster is switched off.

Ending driving readiness/Stopping engine 

Vehicle is stationary: Press the P button on the instrument cluster. The vehicle is parked.

Information 

Ensure the consistency of a combination of hardware and software versions 

After performing software updates, always make sure that the target software versions are also actually installed on the control units and that the system is therefore ensured.

This also applies in the case of hardware replacement.

See TI 9X00 Information on the software system for various control units in the vehicle (112/21)

Information 

The instructions in the Tester take precedence, since the description may be different with later Tester releases.

The procedure described here has been structured in general terms. Different text or additional information may appear in the Tester  .

1. In the display and operator control unit  , call up the menu Settings, Vehicle  .

   Read out customer-specific settings in the Vehicle locking systems menu and write them down.

   Since different customer-specific settings can be stored on the individual driver's keys, the customer-specific settings of all driver's keys must be read out.

2. End operational readiness on the vehicle.
3. Remove old rear-end electronics control unit and install new rear-end electronics control unit.

   > 578919 REMOVING AND INSTALLING REAR-END ELECTRONICS CONTROL UNIT 

4. Connect the Tester to the vehicle and start it. Establish operational readiness on the vehicle.
5. Place original remote control (hand-held transmitter) in emergency start tray.

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.

   Emergency start tray

6. Select the vehicle type if necessary.
7. Select the Rear-end electronics  control unit in the overview  . Press F12 to continue. The message "Create Vehicle Analysis Log (VAL)?" appears. Press F11 to continue.
8. Select Coding/programming  .
9. Select Automatic programming  . Press F12 to continue.
   1. 9.1 The Tester displays the message: Programming completed successfully.
10. Go back to the overview.
11. In the overview  , start the Additional menu  by pressing F7.
12. Select Engine immobiliser commissioning  . Press F12 to continue.
    1. 12.1 Read and follow the instructions and information on the Tester.
    2. 12.2 Teach engine immobiliser according to menu guidance.
    3. 12.3 The Tester displays the message: Engine immobiliser taught.
13. Select Commission component protection  . Press F12 to continue.
    1. 13.1 Read and follow the instructions and information on the Tester.
    2. 13.2 Teach component protection according to menu guidance.
    3. 13.3 The Tester displays the message: Component protection taught.
14. Go back to the overview.
15. Select the Rear-end electronics  control unit in the overview  . Press F12 to continue.
16. Select Drive links/checks  .
17. Select General  . Press F12 to continue.
18. Select Teach: Activate central locking system  . Press F12 to continue.
    1. 18.1 Read and follow the instructions and information on the Tester.
    2. 18.2 Activate central locking according to menu guidance.
    3. 18.3 The Tester displays the message: Central locking system activated.
19. Calibrate combination sensor.
    1. 19.1 Select the Airbag  control unit in the overview  . Press F12 to continue.
    2. 19.2 Select Maintenance/repairs  .
    3. 19.3 Select Calibrate combination sensor  . Press F12 to continue.
    4. 19.4 Read and follow the instructions and information on the Tester.
20. Go back to the overview.
21. In the overview  , press F7 to switch to the Additional menu  .
22. Read out all fault memories  , work through faults that are stored if necessary and clear the fault memories.
23. Exit the diagnostic application. End operational readiness on the vehicle. Disconnect the Tester from the vehicle.
24. Function test: Lock, open and start the vehicle using all remote controls.
25. In the display and operator control unit, call up the menu Settings, Vehicle  .

    Select the customer-specific settings you read out earlier in the Vehicle locking systems menu and reset them for the different driver's keys.