Engine Electrical System - Repair (M57)

• Troubleshooting
  • 61 20... Battery replacement information
    • Notes
    • Vehicles with energy management systems (IBS, power module): Register battery replacement
  • 12 00 Contents of Engine Electrical System General
  • 12 00... Instructions for disconnecting and connecting battery
    • Notes
    • Before disconnecting battery
    • General notes on disconnecting battery
    • After connecting battery
    • Vehicles with a two-battery system
  • 61 00... Notes on handling wiring harnesses and cables
  • 12 00... Notes/information on removing and installing control units
  • 12 00... Notes/information on start assistance (jump starting)
    • Notes
    • Preparation
    • Operation
    • Risk of explosion!
  • 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
• Electronic Switching Or Control Units
  • 12 14 700 Coding control module (DME/DDE)
    • Switch on ignition
  • 12 14 705 Programming control unit (DME/DDE)
    • Switch on ignition
  • 12 90... Removing and installing/replacing electronics box
    • Notes
    • Necessary preliminary tasks
  • 13 61 501 Replacing control unit (DDE)
• Preheating Relay
  • 12 21 500 Removing and installing/replacing relay for glow elements (M57TU, M57T2)
    • Necessary preliminary tasks
• PREHEATER Plugs
  • 12 23 000 Checking all glow elements (M57TU/M47TU/M47T2/M57T2)
    • Necessary preliminary tasks
  • 12 23 505 Replacing all glow plugs (M57/M57TU/M47TU/M47T2/M57T2)
    • Special tools required
    • Necessary preliminary work
• Alternator With Drive And Mounting
  • 12 31 009 Checking alternator (BSD)
    • Notes
    • Oscillogram for a fault-free alternator
    • Oscillogram for a faulty alternator
  • 12 31 009 Checking alternator and regulator switch
    • Test requirements
    • Connect DIS Tester
    • From E46/E39 with multifunction regulator
    • Oscillogram for a fault-free alternator
    • Oscillogram for a faulty alternator
  • 12 31 020 Removing and installing/replacing alternator (M57TU, M57T2)
    • Necessary preliminary work
  • 12 31... Replacing alternator belt pulley
    • Special tools required
  • 12 31... Replacing alternator belt pulley (with overrunning clutch)
    • Special tools required
• Regulator
  • 12 32 501 Replacing voltage regulator
    • Notes
    • Bosch
      • Overview
      • Installation
    • Valeo
      • Overview
      • Installation
• Starter With Mounting
  • 12 41 020 Removing and installing/replacing starter motor (M57TU, M57T2)
    • Necessary preliminary tasks
  • 12 41 041 Replacing solenoid switch
    • Turn off ignition
      • Remove starter motor
• Starter Lead
  • 12 42 530 Removing and installing/replacing battery positive lead (between starter motor and alternator) (M57TU, M57T2)
    • Necessary preliminary tasks
  • 12 42 510 Replacing battery positive lead (between starter and jump-start connection point) (M57T2)
    • Necessary preliminary tasks
  • 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
    • Installation
• Engine Wiring Loom
  • 12 51 001 Replacing wiring harness section for engine (M57T2)
  • 12 51 200 Replacing wiring harness section for injectors (M57T2)
    • Overview
    • Notes
    • Necessary preliminary tasks
• Oil Pressure/Oil Temperature/Oil Gauge
  • 12 61 285 Removing and installing/replacing oil level sensor
    • Necessary preliminary work
  • 12 61 280 Removing and installing/replacing oil pressure switch (M57TU, M57T2)
    • Notes
    • Necessary preliminary tasks
• Coolant Temperature
  • 13 62 585 Removing and installing/replacing the pressure sensor for the exhaust system (M57TU, M57T2, M57T2 SCR)
• Control Unit Box
  • 12 90... Removing and installing/replacing electronics box
    • Notes
    • Necessary preliminary tasks
  • 12 90 100 Replacing fan for electronics box
    • Notes
    • Necessary preliminary tasks