Engine Electrical System - Repair - E92/E93

• Troubleshooting
  • 6120... Battery replacement information
    • Notes
    • Vehicles with energy management systems (IBS, power module): Register battery replacement
  • 12 00... Instructions on compression testing
  • 12 00... Instructions on component testing
  • 12 00... Instructions for working on the ignition system
  • 12 00... Instructions for connecting and disconnecting test units
  • 12 00... Instructions for disconnecting and connecting battery
  • 6100... Notes on handling wiring harnesses and cables
  • 12 00... Instructions for removing and installing electronic control units
  • 12 00... Instructions for welding work (overload protection of control units)
  • 12 00... Instructions on starting aid
    • Notes
    • Preparation
    • Operation
  • 00 Safety information for working on vehicles with automatic engine start-stop function (MSA)
    • Notes
    • Observe safety precautions when working on MSA vehicles
    • MSA function is deactivated by
    • When working with diagnosis tools
• Ignition Wires, Spark Plugs
  • 12 12 011 Replacing all spark plugs (N42, N40, N46, N45, N52, N52K, N51)
• Ignition Coil
  • 12 13 Notes on checking ignition system
  • 12 13 009 Checking rod-type ignition coils (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
  • 12 14 521 Replacing crankshaft pulse generator (N52, N52K, N51, N53)
  • 12 14 523 Replacing inlet camshaft pulse generator (N52, N52K, N51, N53)
  • 12 14 524 Replacing exhaust camshaft pulse generator (N52, N52K, N51, N53)
  • 12 14 550 Replacing control unit (DME)
  • 12 14 600 Removing/replacing knock sensors (N52, N52K, N51)
  • 12 14 700 Coding control module (DME / DDE)
  • 12 14 705 Programming control unit (DME / DDE)
• Alternator With Drive And Mount
  • 12 31... Replacing alternator belt pulley
  • 12 31... Replacing alternator belt pulley (with overrunning clutch)
    • Notes
  • 12 31 009 Checking alternator (BSD)
  • 12 31 020 Removing and installing or replacing alternator (N52, N52K, N51, N53)
• Regulator
  • 12 32 501 Replacing voltage regulator
• Starter With Mounting
  • 12 41 020 Removing and installing/replacing starter motor (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)
  • 12 42 540 Replacing safety battery terminal (SBK)
• Engine Wiring Loom
  • 12 51 001 Replacing wiring harness section for engine (N52K, N51)
  • 12 51 100 Replacing wiring harness section for ignition coil (N52K / N51)
• Oil Pressure-Oil Temperature Gauge
  • 12 61 280 Removing and installing/replacing engine 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