64 99... Fault 07 Overheating protection
WARNING: This page is about a different car, the 2003 BMW 530i, 2002 BMW 530i, and 2001 BMW 530i. However, it is still accessible from the selected car via links, so may be relevant.
Test precondition:
Independent parking heater not in heating mode or after-running mode.
Wires from heater control unit to independent parking heater control unit O.K.
Instruction:
Switch on independent parking heater via MID or on-board monitor.
FAULT 07 OVERHEATING PROTECTION TROUBLESHOOTING
| Question | Measure | |
|---|---|---|
| Is battery voltage applied at connector strip plug connector X01017 between Pin 9 and vehicle ground? | No | Refer to Diagnosis Program. (Wire from heater control unit to independent parking heater or heating control unit defective) |
| Yes | OK | |
| Is battery voltage applied at connector strip plug connector X01017 between Pin 7 and vehicle ground? | No | Overheating protection is active. In this case, check: Bleeding coolant system, refer to 64 12... FLUSHING COOLING SYSTEM WHEN REPLACING LATENT HEAT ACCUMULATOR DUE TO SALT LEAKS Temperature sensor, refer to FAULT 05 TEMPERATURE SENSOR Circulation pump, refer to FAULT 04 CIRCULATION PUMP (and layout of water hoses (kink) |
| Yes | Overheating protection is not active. Replace combustion air blower, refer to 64 12 530 REMOVING AND INSTALLING/REPLACING COMBUSTION AIR BLOWER (THERMO TOP S) |
|