Document A6 4B, Fresh Air Blower Control Difference (Solution)

Fresh Air Blowers V2 - Regulatory Difference, Error Code 01273 - Only applicable to vehicles with sunroof.


Cause
When the 15A circuit breaker is switched on, along with the ignition and air conditioning, a faulty control of the J 309 solar cell disconnect relay can result in error code 01273.

Solution:
For all vehicles with air conditioning and sunroof, after inserting fuse No. 15, the memory of the air conditioning control unit must be cleared before the vehicle is delivered.