Engine Electrical System - Repair Instructions - X5 (3.0L)

• Troubleshooting
  • 12 00 Contents of Engine Electrical System General
  • 12 00 ... Instructions for disconnecting and connecting battery
    • Notes
    • Vehicles With A Two-Battery System
  • 12 00 ... Information on working on ignition system
  • 12 00 ... Instructions for removing and installing electronic control units
  • 12 00 ... Instructions for welding work (overload protection of control units)
  • 12 00 ... Instructions for connecting and disconnecting test units
  • 12 00 ... Instructions on component testing
  • 12 00 ... Instructions on external starting aid
  • 12 13 Notes on checking ignition system
    • Troubleshooting:
    • Oscillograms:
    • Check
• Ignition Wires, Spark Plugs
  • 12 12 011 Replacing all spark plugs
• Ignition Coil
  • 12 13 Notes on checking ignition system
  • 12 13 ... Fault In Fuel Injection System
  • 12 13 ... Spark Plug Faults
  • 13 13 ... Ignition Coil Faults
  • 12 13 ... Further Fault Patterns With Evaluation
  • 12 13 ... Additional Fault Notes For Troubleshooting
  • 12 13 ... Checking secondary signal for stationary ignition distribution
  • 12 13 ... Normal oscillogram (M, S, W engines only)
  • 12 13 ... Oscillograms of ignition coils from different manufacturers
  • 12 13 009 Checking rod-type ignition coils (M54, M56, N40, N42, N45, N46, N52, N62, N73)
  • 12 13 511 Replacing ignition coil (M52, M52TU, S52, S50US, M54)
  • 12 13 520 Replacing a spark plug connector (M60, M62, M54)
• Electronic Switching Or Control Unit
  • 12 14 521 Replacing pulse generator on crankshaft (M54/M56)
  • 12 14 523 Replacing pulse generator on inlet camshaft (M52TU / M54 / M56)
  • 12 14 524 Replacing pulse generator on exhaust camshaft (M52TU, M54, M56)
  • 12 14 550 Replacing control unit (Digital Motor Electronics) (M62, M54)
  • 12 14 600 Replacing knock sensor (M52TU, M54, M56)
  • 12 14 700 Coding control module (DME / DDE)
  • 12 14 705 Programming control unit (DME / DDE)
  • 12 63 520 Replacing main relay (M62, M54)
  • 61 35... Note on replacing codable/programmable control units
• Alternator With Drive And Mount
  • 12 31... Replacing alternator belt pulley
  • 12 31 009 Checking alternator and regulator switch
  • 12 31 020 Removing and installing or replacing alternator (M52, M52TU, S50US, S52, M54, M56)
• Regulator
  • 12 32 501 Replacing voltage regulator (Valeo/Bosch)
• Starter With Mounting
  • 12 41 020 Removing and installing/replacing starter motor (M54)
  • 12 41 041 Replacing solenoid switch
• Starter Lead
  • 12 42 530 Removing and installing/replacing battery positive lead (between starter motor and alternator) (M54)
  • 12 42 540 Replacing safety battery terminal (SBK)
  • 12 42 550 Removing and installing/replacing between battery positive lead between starter motor and jump start terminal (M54)
• Engine Wiring Loom
  • 12 51 001 Replacing wiring harness section for engine (M54)
  • 12 51 100 Replacing wiring harness section for ignition coils (M54)
• Oil Pressure/Oil Temperature Gauge
  • 12 61 250 Removing and installing/replacing oil temperature switch (M52TU, M54, M56)
  • 12 61 280 Removing and installing/replacing oil pressure switch (M52TU, M54, M56)
  • 12 61 285 Replacing level switch for engine oil (M62, M54, S54, M56)
• Switch And Relays
  • 12 63 520 Replacing main relay (M62, M54)
• Sensor For Control Unit
  • 12 72 520 Removing and installing/replacing pedal travel sensor (M62, M54)