64 99... Fault 03 Glow plug
WARNING: This page is about a different car, the 2003 BMW 525i, 2002 BMW 525i, and 2001 BMW 525i. However, it is still accessible from the selected car via links, so may be relevant.
Test precondition:
Overheating protection not active. Voltage supply at independent parking heater OK.
Instruction:
Switch on independent heater via MID or on-board monitor.
Measure voltage of glow plug at peripherals box (pin allocation: refer to appropriate information on DIS circuit diagram).
Specified value: Voltage switches between 0V and 12V
GLOW PLUG FAULT DESCRIPTION
| Question | Answer | Measure |
|---|---|---|
| Is supply voltage OK? | No | Replace independent parking heater control unit, refer to 64 12 520 REMOVING AND INSTALLING / REPLACING CONTROL UNIT WITH HEAT EXCHANGER (THERMO TOP S) |
| Yes | Switch off park heating, remove connector from glow plug and measure resistance. | |
| Specified value: 3Ω +/- 1Ω Is measured value within valid range? |
No | Replace glow plug, refer to 64 12 505 REMOVING AND INSTALLING / REPLACING GLOW ELEMENT (THERMO TOP S) |
| Yes | Glow plug is OK |