Engine Electrical System - Repair (M57)

Troubleshooting
Electronic Switching Or Control Units
Preheating Relay
- 12 21 500 Removing and installing/replacing relay for glow elements (M57TU, M57T2)
  - Necessary preliminary tasks
PREHEATER Plugs
- 12 23 000 Checking all glow elements (M57TU/M47TU/M47T2/M57T2)
  - Necessary preliminary tasks
- 12 23 505 Replacing all glow plugs (M57/M57TU/M47TU/M47T2/M57T2)
  - Special tools required
  - Necessary preliminary work
Alternator With Drive And Mounting
Regulator
- 12 32 501 Replacing voltage regulator
Starter With Mounting
- 12 41 020 Removing and installing/replacing starter motor (M57TU, M57T2)
  - Necessary preliminary tasks
- 12 41 041 Replacing solenoid switch
  - Turn off ignition
    - Remove starter motor
Starter Lead
Engine Wiring Loom
- 12 51 001 Replacing wiring harness section for engine (M57T2)
- 12 51 200 Replacing wiring harness section for injectors (M57T2)
Oil Pressure/Oil Temperature/Oil Gauge
- 12 61 285 Removing and installing/replacing oil level sensor
  - Necessary preliminary work
- 12 61 280 Removing and installing/replacing oil pressure switch (M57TU, M57T2)
  - Notes
  - Necessary preliminary tasks
Coolant Temperature
- 13 62 585 Removing and installing/replacing the pressure sensor for the exhaust system (M57TU, M57T2, M57T2 SCR)
Control Unit Box
- 12 90... Removing and installing/replacing electronics box
  - Notes
  - Necessary preliminary tasks
- 12 90 100 Replacing fan for electronics box
  - Notes
  - Necessary preliminary tasks