TROUBLE SHOOTING
Note. The A/C-heater control unit is capable of storing intermittent or permanent defects in memory. Diagnosis of such defects can be found using BMW Service Tester (Sun 2013 Engine Analyzer) and applicable BMW diagnostic software.
TESTING
| WARNING | To avoid injury from accidental air bag deployment, for 1989-91 vehicles, read and carefully follow all SERVICE PRECAUTIONS and DISABLING & ACTIVATING AIR BAG SYSTEM procedures in AIR BAG RESTRAINT SYSTEM article. For 1992 vehicles, read and carefully follow all SERVICE PRECAUTIONS and DISABLING & ACTIVATING AIR BAG SYSTEM procedures in AIR BAG RESTRAINT SYSTEM article. For 1993 vehicles, read and carefully follow all SERVICE PRECAUTIONS and DISABLING & ACTIVATING AIR BAG SYSTEM procedures in AIR BAG RESTRAINT SYSTEM article. For 1994 vehicles, read and carefully follow all SERVICE PRECAUTIONS and DISABLING & ACTIVATING AIR BAG SYSTEM procedures in AIR BAG RESTRAINT SYSTEM article. For 1995 vehicles, read and carefully follow all SERVICE PRECAUTIONS and DISABLING & ACTIVATING AIR BAG SYSTEM procedures in AIR BAG RESTRAINT SYSTEM article. |