Repair and Diagnosis

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• Quick Lookups
  • Common Specs & Procedures (G80)
  • Fluids
  • Technical Bulletins
    • Campaigns
    • Safety Recalls
    • Technical Service Bulletins
  • Tire Fitment
  • Wiring Diagrams
    • Fuse And Relay Location -- (3' Series: G20, G80)
    • System Wiring Diagrams
    • Using lemon2025'S System Wiring Diagrams
• Accessories & Equipment
  • Accessories Control Systems
    • Communication Systems -- Repair M3 (G80)
    • General Electrical System -- Repair -- M3 (G80)
  • Anti-Theft Systems
    • Audio, Navigation, Anti-Theft, Airbag Control -- Repair -- M3 (G80)
    • Audio, Navigation, Anti-Theft, Airbag Control -- Tightening Torques -- M3 (G80)
    • Body Equipment -- Repair (1 Of 2) -- M3 (G80)
    • Body Equipment -- Tightening Torques -- M3 (G80)
    • Distance Systems, Cruise Control -- Repair M3 (G80)
  • Collision/Avoidance
    • Distance Systems, Cruise Control -- Repair M3 (G80)
    • Distance Systems, Cruise Control -- Tightening Torques M3 (G80)
  • Communication Devices
    • Communication Systems -- Repair M3 (G80)
    • Communication Systems -- Tightening Torques M3 (G80)
  • Cruise Control Systems
    • Distance Systems, Cruise Control -- Repair M3 (G80)
    • Distance Systems, Cruise Control -- Tightening Torques M3 (G80)
  • Drivers Assistance Systems - ADAS
    • Distance Systems, Cruise Control -- Repair M3 (G80)
    • Distance Systems, Cruise Control -- Tightening Torques M3 (G80)
  • Entertainment Systems
    • Audio, Navigation, Anti-Theft, Airbag Control -- Repair -- M3 (G80)
    • Audio, Navigation, Anti-Theft, Airbag Control -- Tightening Torques -- M3 (G80)
  • Exterior Lights
    • Lights -- Repair -- M3 (G80)
    • Lights -- Tightening Torques -- M3 (G80)
    • M3 Technical Data -- M3 (G80)
  • Gauges & Instrument Panels
    • Audio, Navigation, Anti-Theft, Airbag Control -- Repair -- M3 (G80)
    • Instruments -- Repair M3 (G80)
    • Instruments -- Tightening Torques M3 (G80)
  • Headlights
    • Lights -- Repair -- M3 (G80)
    • Lights -- Tightening Torques -- M3 (G80)
  • Horns
    • General Electrical System -- Repair -- M3 (G80)
    • General Electrical System -- Tightening Torques -- M3 (G80)
  • Infotainment
    • Audio, Navigation, Anti-Theft, Airbag Control -- Repair -- M3 (G80)
    • Audio, Navigation, Anti-Theft, Airbag Control -- Tightening Torques -- M3 (G80)
    • General Electrical System -- Repair -- M3 (G80)
    • General Electrical System -- Tightening Torques -- M3 (G80)
  • Interior/Exterior Trim
    • Body Equipment -- Repair (1 Of 2) -- M3 (G80)
    • Body Equipment -- Repair (2 Of 2) -- M3 (G80)
    • Body Equipment -- Tightening Torques -- M3 (G80)
    • M3 Technical Data -- M3 (G80)
  • Interior/Illumination Lights
    • Lights -- Repair -- M3 (G80)
    • M3 Technical Data -- M3 (G80)
  • Mirrors
    • Body Equipment -- Repair (1 Of 2) -- M3 (G80)
    • Body Equipment -- Tightening Torques -- M3 (G80)
    • Electrical Drives -- Repair -- M3 (G80)
    • Electrical Drives -- Tightening Torques -- M3 (G80)
  • Seats
    • Electrical Drives -- Tightening Torques -- M3 (G80)
    • Restraints -- Repair -- M3 (G80)
    • Restraints -- Tightening Torques -- M3 (G80)
    • Seats -- Repair -- M3 (G80)
    • Seats -- Tightening Torques -- M3 (G80)
  • Window Motors & Regulators
    • Body Equipment -- Tightening Torques -- M3 (G80)
    • Electrical Drives -- Repair -- M3 (G80)
    • Electrical Drives -- Tightening Torques -- M3 (G80)
  • Wiper/Washer Systems
    • General Electrical System -- Repair -- M3 (G80)
    • General Electrical System -- Tightening Torques -- M3 (G80)
    • M3 Technical Data -- M3 (G80)
• Body & Frame
  • Door Locks
    • Audio, Navigation, Anti-Theft, Airbag Control -- Repair -- M3 (G80)
    • Audio, Navigation, Anti-Theft, Airbag Control -- Tightening Torques -- M3 (G80)
    • Body Equipment -- Repair (1 Of 2) -- M3 (G80)
    • Body Equipment -- Tightening Torques -- M3 (G80)
    • Distance Systems, Cruise Control -- Repair M3 (G80)
  • Exterior Body Panels
    • Collision - Body Dimensions And Torque Specifications (G80)
    • Collision - Body Panel Repair (G80)
    • Collision - Paint Information (G80)
  • Exterior/Interior Trim
    • Body Equipment -- Repair (1 Of 2) -- M3 (G80)
    • Body Equipment -- Repair (2 Of 2) -- M3 (G80)
    • Body Equipment -- Tightening Torques -- M3 (G80)
    • M3 Technical Data -- M3 (G80)
  • Mirrors
    • Body Equipment -- Repair (1 Of 2) -- M3 (G80)
    • Body Equipment -- Tightening Torques -- M3 (G80)
    • Electrical Drives -- Repair -- M3 (G80)
    • Electrical Drives -- Tightening Torques -- M3 (G80)
  • Seats
    • Electrical Drives -- Tightening Torques -- M3 (G80)
    • Restraints -- Repair -- M3 (G80)
    • Restraints -- Tightening Torques -- M3 (G80)
    • Seats -- Repair -- M3 (G80)
    • Seats -- Tightening Torques -- M3 (G80)
  • Sun Roof/T-Top/Convertible Top
    • Electrical Drives -- Repair -- M3 (G80)
    • Electrical Drives -- Tightening Torques -- M3 (G80)
    • Sunroof -- Repair -- M3 (G80)
    • Sunroof -- Tightening Torques -- M3 (G80)
  • Windows
    • Body Equipment -- Tightening Torques -- M3 (G80)
    • Electrical Drives -- Repair -- M3 (G80)
    • Electrical Drives -- Tightening Torques -- M3 (G80)
• Brakes
  • Anti-Lock Brakes
    • Brakes -- Repair M3 (G80)
    • Brakes -- Tightening Torques M3 (G80)
  • Brakes Control Systems
    • Pedals -- Repair M3 (G80)
    • Pedals -- Tightening Torques M3 (G80)
  • Mechanical - Hydraulic
    • Brakes -- Repair M3 (G80)
    • Brakes -- Tightening Torques M3 (G80)
    • M3 Technical Data -- M3 (G80)
    • Pedals -- Repair M3 (G80)
    • Pedals -- Tightening Torques M3 (G80)
  • Traction Control
    • Brakes -- Repair M3 (G80)
    • Brakes -- Tightening Torques M3 (G80)
• Collision
  • Body Panels
    • Collision - Body Panel Repair (G80)
  • Collision - Body Dimensions And Torque Specifications (G80)
  • General Collision Information
    • Collision - Body Dimensions And Torque Specifications (G80)
    • Collision - Body Panel Repair (G80)
  • Paint & Coatings
    • Collision - Paint Information (G80)
  • Plastic Parts
    • Collision - Body Panel Repair (G80)
  • Sealing & Corrosion Protection
    • Collision - Body Panel Repair (G80)
  • Structural
    • Collision - Body Panel Repair (G80)
• Drivelines & Axles
  • Axle Shafts
    • Front Axle -- Repair M3 (G80)
    • Front Axle -- Tightening Torques M3 (G80)
    • M3 Technical Data -- M3 (G80)
  • Differentials & Drive Axles
    • Front Axle -- Repair M3 (G80)
    • Front Axle -- Tightening Torques M3 (G80)
    • M3 Technical Data -- M3 (G80)
    • Rear Axle -- Repair M3 (G80)
    • Rear Axle -- Tightening Torques M3 (G80)
  • Driveshaft & Universal Joints
    • Propeller Shaft - Operating Fluids
    • Propeller Shaft -- Repair M3 (G80)
    • Propeller Shaft -- Tightening Torques M3 (G80)
  • Locking Hubs
    • Rear Axle -- Tightening Torques M3 (G80)
  • Wheel Hubs
    • Front Axle -- Repair M3 (G80)
    • Front Axle -- Tightening Torques M3 (G80)
    • Rear Axle -- Repair M3 (G80)
    • Rear Axle -- Tightening Torques M3 (G80)
• Electrical
  • Body Electrical
    • General Electrical System -- Repair -- M3 (G80)
    • General Electrical System -- Tightening Torques -- M3 (G80)
  • Charging Systems
    • Engine Electrical System -- Repair M3 (G80)
    • Engine Electrical System -- Tightening Torques M3 (G80)
    • General Electrical System -- Repair -- M3 (G80)
    • General Electrical System -- Tightening Torques -- M3 (G80)
  • Gauges
    • Audio, Navigation, Anti-Theft, Airbag Control -- Repair -- M3 (G80)
    • Instruments -- Repair M3 (G80)
    • Instruments -- Tightening Torques M3 (G80)
  • Horns
    • General Electrical System -- Repair -- M3 (G80)
    • General Electrical System -- Tightening Torques -- M3 (G80)
  • Motors, Switches, Relays
    • General Electrical System -- Repair -- M3 (G80)
    • General Electrical System -- Tightening Torques -- M3 (G80)
  • Starter
    • Engine Electrical System -- Tightening Torques M3 (G80)
    • M3 Technical Data -- M3 (G80)
  • Wiring Diagrams
    • Fuse And Relay Location -- (3' Series: G20, G80)
    • System Wiring Diagrams
    • Using lemon2025'S System Wiring Diagrams
• Engine Mechanical
  • Auxiliary Emission Control Systems
    • Fuel Supply System -- Tightening Torques M3 (G80)
  • Blowers, Superchargers & Turbochargers
    • Engine -- Tightening Torques M3 (G80)
    • Turbocharger, Oxygen Sensors - Repair M3 (G80)
  • Cooling Fan
    • Cooling System -- Repair M3 (G80)
    • Cooling System -- Tightening Torques M3 (G80)
    • Engine -- Tightening Torques M3 (G80)
    • M3 Technical Data -- M3 (G80)
  • Cooling System (Mechanical)
    • Cooling System -- Repair M3 (G80)
    • Cooling System -- Tightening Torques M3 (G80)
    • Engine -- Tightening Torques M3 (G80)
    • M3 Technical Data -- M3 (G80)
  • Exhaust
    • Exhaust System -- Repair -- M3 (G80)
    • Exhaust System -- Tightening Torques -- M3 (G80)
  • Fuel System
    • Fuel Supply System -- Repair M3 (G80)
    • Fuel Supply System -- Tightening Torques M3 (G80)
    • Fuel System -- Repair M3 (G80)
    • Fuel System -- Tightening Torques M3 (G80)
    • M3 Technical Data -- M3 (G80)
  • Lubrication System
    • Cooling System -- Tightening Torques M3 (G80)
    • Engine -- Tightening Torques M3 (G80)
    • Engine Electrical System -- Tightening Torques M3 (G80)
  • Mechanical
    • Engine - Cylinder Head - Repair M3 (G80)
    • Engine - Oil Pan/Housing Cover/Crankshaft/Flywheel - Repair M3 (G80)
    • Engine - Oil Pump/Oil Filter/Coolant Pump/Intake System - Repair M3 (G80)
    • Engine - Pistons/Drive Belts/Camshafts/Rocker Arms - Repair M3 (G80)
    • Engine -- Tightening Torques M3 (G80)
    • Engine And Transmission Mounting -- Repair M3 (G80)
    • Engine And Transmission Mounting -- Tightening Torques M3 (G80)
    • Intake/Exhaust Valves & Valve Stem Seals, Variable Camshaft Timing & Variable Valve Lift Control Systems - Repair M3 (G80)
    • M3 Technical Data -- M3 (G80)
  • Starter
    • Engine Electrical System -- Tightening Torques M3 (G80)
    • M3 Technical Data -- M3 (G80)
• Engine Performance
  • Emissions
    • Emission Applications
    • Emission Control Abbreviations
    • State Emission Standards - Diesel
    • State Emission Standards - Gas
  • Engine Control Systems
    • Engine -- Tightening Torques M3 (G80)
    • Engine Electrical System -- Tightening Torques M3 (G80)
    • Fuel System -- Repair M3 (G80)
    • Fuel System -- Tightening Torques M3 (G80)
    • Pedals -- Repair M3 (G80)
    • Pedals -- Tightening Torques M3 (G80)
    • Turbocharger, Oxygen Sensors - Repair M3 (G80)
  • Fuel Delivery
    • Fuel Supply System -- Repair M3 (G80)
    • Fuel Supply System -- Tightening Torques M3 (G80)
    • Fuel System -- Repair M3 (G80)
    • Fuel System -- Tightening Torques M3 (G80)
    • M3 Technical Data -- M3 (G80)
  • Ignition System
    • Engine Electrical System -- Tightening Torques M3 (G80)
  • Specifications
    • Firing Order & Cylinder Identification
  • Tune-Up
    • Engine Electrical System -- Tightening Torques M3 (G80)
• General Information
  • Abbreviations
    • Commonly Used Abbreviations - General Information
    • Emission Control Abbreviations
  • Basic Trouble Shooting
    • Basic Trouble Shooting - General Information
    • Commonly Used Abbreviations - General Information
    • Emission Control Abbreviations
    • Engine Performance - Trouble Shooting - General Information
  • Brakes
    • Anti-Lock Brake Safety Precautions - General Information
    • Map - Brake Systems
    • Map - Routine Inspection Reference Guide
  • Check Lists
    • Symptom Check List Worksheet - General Information
  • Driveline/Axles
    • Drive Axle Noise Diagnosis - General Information
    • Gear Tooth Contact Patterns - General Information
    • Map - Drive Train & Transmission
    • Trouble Shooting - Clutches - General Information
  • Electrical
    • Map - Electrical Systems
    • Using lemon2025'S System Wiring Diagrams
  • Engine
    • Engine Overhaul Procedures - General Information
    • General Cooling System Service - General Information
  • Engine Performance
    • Electrostatic Discharge Warning - General Information
    • Engine Performance Diagnostic Routine Outline - General Information
    • Engine Performance Safety Precautions
    • Map - Engine Performance & Maintenance
    • Parasitic Load Explanation & Test Procedures - General Information
    • State Emission Standards - Diesel
    • State Emission Standards - Gas
    • Waveforms - Injector Pattern Tutorial - General Information
  • Map - Exhaust Systems
  • Heating, Ventilation & A/C (HVAC)
    • Map - Heating, Ventilation, & Air Conditioning
  • Identification
    • CANADIAN Model Cross-Reference
  • Metric Conversions
    • Engine Displacement Conversion Table - ECAT
    • Metric Conversions
  • OEM General Information
    • Body, Accessories & Equipment Special Tools -- M3 (G80)
    • General Orphan Data (1 Of 4)
    • General Orphan Data (2 Of 4)
    • General Orphan Data (3 Of 4)
    • General Orphan Data (4 Of 4)
    • Maintenance And General Information -- Repair M3 (G80)
    • Maintenance And General Information -- Tightening Torques M3 (G80)
    • Mechanical Special Tools -- M3 (G80)
  • Maintenance Reminder Light (Reset Procedures)
  • Specifications Index
    • Common Specs & Procedures (G80)
  • Steering
    • Map - Steering, Suspension, Wheel Alignment, Wheels & Tires
    • Wheel Alignment Theory & Operation - General Information
  • Traction Control Disable Procedures
  • Trouble Shooting - Manual Transmission - General Information
• Heating, Ventilation & A/C (HVAC)
  • A/C Compressor
    • Heating And Air Conditioning -- Repair -- M3 (G80)
    • Heating And Air Conditioning -- Tightening Torques -- M3 (G80)
  • General Servicing
    • Heating And Air Conditioning -- Tightening Torques -- M3 (G80)
  • HVAC Control Systems
    • Heating And Air Conditioning -- Repair -- M3 (G80)
    • Heating And Air Conditioning -- Tightening Torques -- M3 (G80)
    • M3 Technical Data -- M3 (G80)
• Maintenance
  • Procedures
    • Maintenance And General Information -- Repair M3 (G80)
    • Maintenance Reminder Light (Reset Procedures)
• Restraints
  • Air Bag, SRS
    • Restraints -- Repair -- M3 (G80)
    • Restraints -- Tightening Torques -- M3 (G80)
    • Steering And Wheel Alignment -- Repair -- M3 (G80)
  • Restraints Control Systems
    • Audio, Navigation, Anti-Theft, Airbag Control -- Repair -- M3 (G80)
    • Audio, Navigation, Anti-Theft, Airbag Control -- Tightening Torques -- M3 (G80)
  • Seat Belts
    • Audio, Navigation, Anti-Theft, Airbag Control -- Repair -- M3 (G80)
    • Audio, Navigation, Anti-Theft, Airbag Control -- Tightening Torques -- M3 (G80)
• Steering
  • Manual Steering
    • Steering And Wheel Alignment -- Repair -- M3 (G80)
    • Steering And Wheel Alignment -- Tightening Torques -- M3 (G80)
  • Power Steering
    • Steering And Wheel Alignment -- Repair -- M3 (G80)
    • Steering And Wheel Alignment -- Tightening Torques -- M3 (G80)
  • Steering Column
    • M3 Technical Data -- M3 (G80)
    • Steering And Wheel Alignment -- Repair -- M3 (G80)
    • Steering And Wheel Alignment -- Tightening Torques -- M3 (G80)
  • Steering Gear
    • Steering And Wheel Alignment -- Repair -- M3 (G80)
    • Steering And Wheel Alignment -- Tightening Torques -- M3 (G80)
  • Steering Linkage
    • Steering And Wheel Alignment -- Repair -- M3 (G80)
    • Steering And Wheel Alignment -- Tightening Torques -- M3 (G80)
• Suspension
  • Electronic Suspension
    • Integrated Suspension Systems -- Repair M3 (G80)
    • Integrated Suspension Systems -- Tightening Torques M3 (G80)
  • Front Suspension
    • Front Axle -- Repair M3 (G80)
    • Front Axle -- Tightening Torques M3 (G80)
    • Integrated Suspension Systems -- Repair M3 (G80)
  • Rear Suspension
    • Integrated Suspension Systems -- Repair M3 (G80)
    • M3 Technical Data -- M3 (G80)
    • Rear Axle -- Repair M3 (G80)
    • Rear Axle -- Tightening Torques M3 (G80)
  • Suspension Control Systems
    • Rear Axle -- Repair M3 (G80)
  • Wheel Alignment
    • M3 Technical Data -- M3 (G80)
    • Steering And Wheel Alignment -- Repair -- M3 (G80)
  • Wheels & Tire System
    • M3 Technical Data -- M3 (G80)
    • Wheel And Tires -- Tightening Torques -- M3 (G80)
    • Wheels And Tires - Operating Fluids
    • Wheels And Tires -- Repair -- M3 (G80)
• Transmission
  • Automatic Trans
    • Automatic Transmission -- Repair M3 (G80)
    • Automatic Transmission -- Tightening Torques M3 (G80)
    • Engine And Transmission Mounting -- Repair M3 (G80)
    • Engine And Transmission Mounting -- Tightening Torques M3 (G80)
    • Gear Shift Mechanism - Operating Fluids
    • M3 Technical Data -- M3 (G80)
  • Clutch
    • Clutch - Operating Fluids
    • Clutch -- Repair M3 (G80)
    • Clutch -- Tightening Torques M3 (G80)
    • M3 Technical Data -- M3 (G80)
    • Pedals -- Repair M3 (G80)
  • Manual Trans
    • Engine And Transmission Mounting -- Tightening Torques M3 (G80)
    • Gear Shift Mechanism - Operating Fluids
    • Gear Shift Mechanism -- Repair M3 (G80)
    • Gear Shift Mechanism -- Tightening Torques M3 (G80)
    • M3 Technical Data -- M3 (G80)
    • Manual Transmission -- Repair M3 (G80)
    • Manual Transmission -- Tightening Torques M3 (G80)
  • Transfer Case
    • M3 Technical Data -- M3 (G80)
    • Transfer Case -- Repair M3 (G80)
    • Transfer Case -- Tightening Torques M3 (G80)
  • Transmission Control Systems
    • Automatic Transmission -- Repair M3 (G80)
    • Automatic Transmission -- Tightening Torques M3 (G80)
    • Gear Shift Mechanism -- Tightening Torques M3 (G80)
• External Pages