Section 2307 (Engine Electrical System - Repair (N51))

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2013 BMW 128i, 2012 BMW 128i, 2011 BMW 128i, 2010 BMW 128i, and 2009 BMW 128i. However, it is still accessible from the selected car via links, so may be relevant.

Troubleshooting
Ignition Wires, Spark Plugs
- 12 12 011 Replacing All Spark Plugs (N40, N42, N45, N46, N51, N52, N52K)
  - Special Tools Required
Ignition Coil
- 12 13 Notes On Checking Ignition System
- 12 13 511 Replacing Ignition Coils (N51, N52, N52K)
Electronic Switching Or Control Unit
Alternator With Drive
Regulator
- 12 32 501 Replacing Voltage Regulator
Starter With Mounting
- 12 41 020 Removing And Installing/Replacing Starter (N51, N52, N52K, N53, N54)
- 12 41 041 Replacing Solenoid Switch
Starter Lead
- 12 42 500 Replacing Battery Positive Lead (Between Starter, Alternator And Battery Positive Terminal)
- 12 42 540 Replacing Safety Battery Terminal (SBK)
Engine Wiring Loom
- 12 51 001 Replacing Wiring Harness Section For Engine (N51, N52K)
- 12 51 100 Replacing Wiring Harness Section For Ignition Coil (N51, N52K)
Oil Pressure/Oil Temperature Gauge
- 12 61 280 Removing And Installing/Replacing Oil Pressure Sensor (N51, N52, N52K, N53, N54)
- 12 61 285 Replacing Engine Oil Level Sensor (N46, N51, N52, N52K, N53, N54)
Control Unit Box
- 12 90... Removing And Installing/Replacing Electronics Box
- 12 90 100 Replacing Fan For Electronics Box