Engine Electrical System - Repair

• 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 13 Notes On Checking Ignition 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 Inspection
  • 12 00 ... Instructions On Starting Aid
  • 12 13 ... Fault In Fuel Injection System
  • 12 13 ... Spark-Plug Faults
  • 12 13 ... Ignition Coil Faults
  • 12 13 ... Further Fault Patterns With Evaluation
  • 12 13 ... Additional Fault Notes For Troubleshooting
  • 12 13 ... Normal Oscillogram (M, S, W Engines Only)
  • 12 13 ... Oscillograms Of Ignition Coils From Different Manufacturers
  • 12 13 ... Checking Secondary Signal For Stationary Ignition Distribution
• Ignition Wires, Spark Plugs
  • 12 12 011 Replacing All Spark Plugs (S54)
• Ignition Coil
  • 12 13 Notes On Checking Ignition System
  • 12 13 ... Checking Secondary Signal For Stationary Ignition Distribution
  • 12 13 ... Normal Oscillogram (M, S, W Engines Only)
  • 12 13 009 Checking Ignition Coils (Secondary Coil)
  • 12 13 511 Replacing Ignition Coil (S54)
• Electronic Switching Or Control Unit
  • 12 14 511 Replacing Transmission Speed Sensor (SMG)
  • 12 14 521 Replacing Pulse Generator On Crankshaft (S54)
  • 12 14 523 Replacing Pulse Generator On Inlet Camshaft (S54)
  • 12 14 524 Replacing Pulse Generator On Exhaust Camshaft (S54)
  • 12 14 550 Replacing Control Module (DME)
  • 12 14 600 Replacing Knock Sensor(s) (S54)
  • 12 14 700 Coding Control Module (DME/DDE)
  • 12 14 705 Programming Control Unit (DME/DDE)
  • 12 63 520 Replacing Main Relay
  • 12 72 010 Removing And Installing/Replacing Throttle Actuator (S54)
  • 13 62 530 Replacing Transmission Fluid Temperature Sensor (SMG)
  • 61 35 ... Note On Replacing Codable/Programmable Control Units
• Alternator With Drive And Mount
  • 12 31 ... Replacing Alternator Belt Pulley
  • 12 31 020 Removing And Installing/Replacing Alternator (S54)
• Regulator
  • 12 32 501 Replacing Voltage Regulator (Valeo/Bosch)
• Starter With Mounting
  • 12 41 020 Removing And Installing/Replacing Starter Motor (S54)
  • 12 41 041 Replacing Solenoid Switch
• Starter Lead
  • 12 42 510 Replacing Battery Positive Lead (Between Starter Motor And B+ Support Point) (S54)
  • 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 Engine (S54)
  • 12 51 100 Replacing Wiring Harness Section For Ignition Coil (S54)
• Oil Pressure/Oil Temperature Gauge
  • 12 61 280 Removing And Installing/Replacing Oil Pressure Switch (S54)
  • 12 61 285 Replacing Level Switch For Engine Oil (M62, M54, S54, M56)
• Switches And Relays
  • 12 63 520 Replacing Main Relay
  • 12 72 010 Removing And Installing/Replacing Throttle Actuator (S54)
• Sensor For Control Unit
  • 12 72 010 Removing And Installing/Replacing Throttle Actuator (S54)