Engine Electrical System - Repair

• Troubleshooting
  • 61 20... Battery replacement information
    • Notes
    • Diagnosis system
    • Programming system
  • 61 13... Butt connector for repairing a plug connection
  • 12 00... Instructions for removal and replacement of control units
  • 12 00... Instructions for working on the ignition system
  • 61 00... Notes for disconnecting and connecting battery
    • Notes
    • Before disconnecting battery
    • General notes on disconnecting battery
    • After connecting battery
  • 61 13... Notes for opening contacts and locks of different plug contact systems
    • Notes
    • Repair instructions for opening connector housings and removing contacts of different connector systems
      • Connector system D 1.5/D 2.5
      • Connector system JPT/MDK/DFK
      • Connector system Elo/Elo Power
      • Connector system LSK
      • Connector system MQS/MPQ
  • 61 00... Notes on handling wiring harnesses and cables
  • 12 00... Notes/information on start assistance (jump starting)
    • Notes
    • Preparation
    • Operation
  • 00 Safety information for working on vehicles with automatic engine start-stop function (MSA)
    • Notes
    • MSA function is deactivated by
    • When working with diagnosis tools
• Ignition Wires, Spark Plugs
  • 12 12 011 Removing and installing/replacing all spark plugs (N54, N63 B44 0/1, N74)
• Ignition Coil
  • 12 13 511 Replacing ignition coils (N74)
• Electronic Switching Or Control Units
  • 12 14 700 Coding control module (DME/DDE)
  • 12 14 705 Programming control unit (DME/DDE)
  • 12 14 611 Removing/replacing left knock sensors (N74)
  • 12 14 610 Removing/replacing right knock sensors (N74)
  • 12 14 552 Replacing control unit (DME) cylinders 1-6 (N74)
    • Notes
    • Injection quantity compensation
  • 12 14 552 Replacing control unit (DME) cylinders 7-12 (N74)
    • Notes
    • Injection quantity compensation
  • 12 14 521 Replacing crankshaft pulse sensor (N74)
    • Notes
    • Installation location
  • 12 14 512 Replacing pulse generator on left exhaust camshaft (N74)
    • Notes
    • Installation
  • 12 14 522 Replacing pulse generator on left inlet camshaft (N74)
    • Notes
    • Installation
  • 12 14 513 Replacing pulse generator on right exhaust camshaft (N74)
    • Notes
    • Installation
  • 12 14 526 Replacing pulse generator on right inlet camshaft (N74)
    • Notes
    • Installation
• Alternator With Drive And Mounting
  • 12 31 020 Removing and installing or replacing alternator (N74)
  • 12 31... Replacing alternator belt pulley (with overrunning clutch)
• Controller
  • 12 32 501 Replacing voltage regulator
    • Notes
    • Bosch
      • Overview
      • Installation
    • Valeo
      • Notes
      • Installation
• Starter With Mounting
  • 12 41 020 Removing and installing/replacing starter (N74)
    • Notes
    • Installation
  • 12 41 041 Replacing solenoid switch
• Starter Lead
  • 12 42 550 Replacing positive battery cable lead between starter motor, alternator and positive battery connection point (N74)
  • 12 42 540 Replacing safety battery terminal (SBK)
    • Notes
    • Battery in engine compartment
    • Battery in luggage compartment behind side trim panel
    • Battery in luggage compartment under floor trim panel
    • Battery in luggage compartment under spare wheel
• Engine Wiring Loom
  • 12 51 001 Replacing wiring harness section for ignition coils on right or left (N74)
• Oil Pressure/Oil Temperature/Oil Gauge
  • 12 61 285 Removing and installing/replacing oil level sensor for engine oil (N74)
  • 12 61 280 Removing and installing/replacing oil pressure sensor (N74)
• Control Unit Box
  • 12 90... Removing and installing/replacing electronics box add-on
  • 12 90... Removing and installing/replacing left or right electronics box