If the control unit for the climate regulation has been replaced, or a new shifting motor for the temperature damper has been installed, a basic setting must be performed. During the basic setting, the control unit learns the end positions of the shifting motor.
Test prerequisites:
The battery voltage should be above 11.5 V.
Ignition on, engine off.
No fault codes should be stored in the fault memory.
Performance:
Choose the function: Climate regulation.
At this basic setting, the temperature dampers shifting motors run to their end positions. The text: "motoren lernen" is presented and changes after a while to: "grundeinstellung durchgefuehrt".
Wait about 20 seconds (the climate control unit registrates the shifting motors new values and stores them).
End the function. Switch the ignition OFF/ON, wait about 15 seconds for possible fault codes to be stored.
Re-establish the communication and check if any fault codes have been stored.