Heating/A/C - Faults After Stepper Motor Replacement
SI B64 06 10Heating and Air Conditioning
October 2010
Technical Service
This Service Information bulletin supersedes SI B64 06 10 dated July 2010.
[NEW] designates changes to this revision
SUBJECT
Operational Faults After Stepper Motor Replacement
MODEL
E70 (X5)
E71 (X6)
E72 (ActiveHybrid X6)
Vehicles produced from 10/1/2006 to 8/31/2010
SITUATION
After a stepper motor replacement and programming of the IHKA control panel with ISTA/P2.37 or higher, the air flow from the vents does not correspond to the selection on the IHKA control panel.
CAUSE
The stepper motors can no longer be addressed due to a software error in the automatic air conditioning system (IHKA) control panel.
[NEW] PROCEDURE
Do not replace IHKA control panel.
^ Program and code the vehicle using ISTA/P 2.39.0 or higher.
^ Note that ISTA/P will automatically reprogram and code all programmable control modules that do not have the latest software.
^ For information on programming and coding with ISTA/P, refer to CenterNet / Aftersales Portal / Service / Workshop Technology / Vehicle Programming.
WARRANTY INFORMATION