Engine Electrical System - Repair

Troubleshooting
Ignition Wires, Spark Plugs
- 12 12 011 Replacing all spark plugs (N42, N40, N46, N45, N52, N52K, N51)
Ignition Coil
- 12 13 009 Check ignition pencil coils with diagnosis and information system tester or oscilloscope (M54, M56, N40, N42, N43, N45, N46, N52, N62, N62TU, N73)
- 12 13 511 Replacing ignition coils (N52, N52K, N51)
Electronic Switching Or Control Unit
Alternator With Drive And Mounting
Regulator
- 12 32 501 Replacing voltage regulator
Starter With Mounting
- 12 41 020 Removing and installing/replacing starter (N52, N52K, N51, N53, N54)
- 12 41 041 Replacing solenoid switch
Starter Lead
- 12 42 500 Replacing battery positive lead (between starter, alternator and battery positive terminal)
Engine Wiring Loom
- 12 51 001 Replacing wiring harness section for engine (N52)
- 12 51 100 Replacing wiring harness section for ignition coil (N52)
Oil Pressure/Oil Temperature Gauge
- 12 61 280 Removing and installing/replacing oil pressure sensor (N52, N52K, N51, N54, N53)
- 12 61 285 Replacing engine oil level sensor (N52, N52K, N51, N46, N54, N53)
Control Unit Box
- 12 90... Removing and installing/replacing electronics box
- 12 90 100 Replacing fan for electronics box (N52)