When replacing or retrofitting a control unit it has to be version-coded to function correctly. The control unit must be of the correct type to approve the version code.
Note:
Incorrect version coding may reduce the car's safety and function.
Test conditions:
Ignition on, engine off.
Battery voltage above 12 V.
No faults in the system.
Procedure:
Select the function: "Version coding", press "OK".
Current version is shown, press "OK" to change version.
A scroll list with possible versions is shown. Select desired version, press "OK".
The new version is shown, press "OK" to save the new value.
The function is done.
If the function fails, check the test conditions and repair any faults.