Replacing ELV Control Unit

NOTIFICATION 

Voltage drop 

• Risk of irreparable damage to control unit 
• Risk of damage to control unit 
• Fault entries in the control unit 
• Coding in the control unit is aborted 
• Malfunctions in control unit, even during programming 

  → Prior to disconnecting the control unit, switch off ignition and remove ignition key

  → Ensure that the power supply is not interrupted during programming.

  → Connect a battery charger with a current rating of at least > Nominal value 40 A  to the vehicle battery.

1. Switch off ignition and replace the ELV control unit.

   > WM, 480819 REMOVING AND INSTALLING STEERING LOCK 

   Information 

   The > 9818 - PIWIS Tester II  instructions take precedence and in the event of a discrepancy, these are the instructions that must be followed.

   A discrepancy may arise with later software versions for example.

   Information 

   All remote controls (keys) are required in order to teach a control unit or remote control (key).

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

2. > 9818 - PIWIS Tester II  must be connected to the vehicle before starting it. Switch on ignition.
3. Select the required vehicle type.
4. In the control unit overview,  press to call up the Additional menu. 

   When the question "Create Vehicle Analysis Log (VAL)?" appears, either press to create a VAL or press if you do not want to create a VAL.

5. Engine immobilizer start-up  must be selected. Press to continue.
6. Enter the PPN user name and password. Press to continue.
7. The vehicle identification number (VIN) is displayed. Make changes if necessary and press to confirm.
8. Enter the repair order number and press to confirm.
9. Follow the instructions on the Tester and carry out the process.
10. Once the teaching process is completed successfully, the Tester shows the following status:

    BCM front: taught

    BCM rear: taught

    ELV: taught

    DME: taught

    Number of keys taught: x

    Press to continue.

11. Read and follow the instructions displayed on the Tester. Press to continue.
12. Read out fault memory and erase it if necessary.
13. Exit the diagnostic application.
14. Switch off the ignition.
15. > 9818 - PIWIS Tester II  must then be disconnected from the vehicle.
16. Lock and unlock the vehicle and start the engine using all remote controls.