64 99... Fault 03 Glow plug
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2003 BMW 540i, 2002 BMW 540i, 2001 BMW 540i, 2000 BMW 540i, and 1999 BMW 540i. 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 O.K.
Instruction:
Switch on independent heater via MID or on-board monitor.
Measure voltage of glow plug at peripherals box. See appropriate SYSTEM WIRING DIAGRAM.
Specified value: Voltage switches between 0V and 12V
GLOW PLUG FAULT DESCRIPTION
| Question | Measure | |
|---|---|---|
| Is supply voltage O.K.? | 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: 3 Ω +/- 1 Ω 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 O.K. |