Repair Procedure:
WARNING: This page does not describe the selected car, but rather 41 other vehicles, including the 2003 BMW M5, 2003 BMW M3, 2003 BMW 540i, 2003 BMW 530i, and 2003 BMW 525i. However, it is still accessible from the selected car via links, so may be relevant.
Replace the high pressure switch along with the receiver/dryer if the fusible plug is found open.
The following items should also be checked for proper function as the system should not normally operate at these high pressures:
- Auxiliary Fan
- 108°C Coolant Temperature Switch (M Series Cars Only)
- 150°C Compressor Temperature Switch (models so equipped)
- Operating pressures - blockage or restriction in system