Performing Guided Fault Finding on Heating System

Performing Guided Fault Finding on Heating System

• There are different versions of the Climatronic control module (J255) heater control head. Pay attention to precise assignment on replacement. Refer to Electronic Parts Catalog (ETKA).

• Heating system OBD is performed in the "Guided Fault Finding" function with the Vehicle diagnosis, testing and information system (VAS5051B) in the "Guided Fault Finding" function.

• The Climatronic control module (J255) , can currently be exchanged as usual, component protection is not active at this time. Check using Vehicle diagnosis, testing and information system (VAS5051B) in the "Guided Fault Finding" function.

• If the Climatronic control module (J255) is supposed to be replaced, check the coding and adaptation before removing it using the "Replace Control Module" function, starting with Vehicle diagnosis, testing and information system (VAS5051B) in the "Guided Fault Finding" function.