Repair and Diagnosis

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• Quick Lookups
  • Common Specs & Procedures
  • Electrical Component Locations
    • Id.4 - Component Locations
  • Fluids
  • Technical Bulletins
    • Campaigns
    • Safety Recalls
    • Technical Service Bulletins
  • Wiring Diagrams
    • OEM Wiring Diagrams 12 V Sockets
    • OEM Wiring Diagrams A/C System , (KH4),(KH7)
    • OEM Wiring Diagrams Access And Start Authorization , (4I6),(4I7),(4I8),(4K5),(4K6),(4K7)
    • OEM Wiring Diagrams Adaptive Cruise Control , (8T3), (8T8)
    • OEM Wiring Diagrams Airbag Systems , (4UM)
    • OEM Wiring Diagrams Ambient Lighting , (UD1),(UD2),(UD3),(UD6)
    • OEM Wiring Diagrams Assistance Systems , (7Y1)
    • OEM Wiring Diagrams Auxiliary Air Heater (PTC) , (7E7)
    • OEM Wiring Diagrams Brake System
    • OEM Wiring Diagrams Cell Phone System , (9IJ),(9ZV)
    • OEM Wiring Diagrams Communication , (NZ2),(NZ4)
    • OEM WIRING DIAGRAMS COMMUNICATION CAN BUS NETWORK DATA BUS From May 2020
    • OEM Wiring Diagrams Convenience Can Bus Network Data Bus
    • OEM Wiring Diagrams Data Bus On Board Diagnostic Interface And Diagnostic Link Connector (DLC)
    • OEM Wiring Diagrams Driver Assistance Systems Can Bus Network Data Bus
    • OEM Wiring Diagrams Driver Assistance Systems Front Camera
    • OEM Wiring Diagrams Driver Door Control Modules , (L0L)
    • OEM Wiring Diagrams Driver Information System Can Bus Network Data Bus
    • OEM Wiring Diagrams Electric Drive System For Front Axle , EBRA,ECUA
    • OEM Wiring Diagrams Electric Drive System For Rear Axle , EBJA,EBJC,EBNA,EBRA,ECUA
    • OEM Wiring Diagrams Electric Drive System, Engine/Motor Control Module , EBJA,EBJC,EBNA,EBRA,ECUA
    • OEM Wiring Diagrams Engine Sound Generator
    • OEM Wiring Diagrams ETHERNET Network Data Bus
    • OEM Wiring Diagrams Front Passenger Door Control Modules , (L0L)
    • OEM Wiring Diagrams Fuse Assignment, Engine/Motor Compartment
    • OEM Wiring Diagrams Fuse Assignment, Passenger Compartment
    • OEM Wiring Diagrams Ground Concept In Engine/Motor Compartment
    • OEM Wiring Diagrams Ground Concept In Luggage Compartment
    • OEM Wiring Diagrams Ground Concept In Underbody
    • OEM Wiring Diagrams Ground Concept In Vehicle Interior
    • OEM Wiring Diagrams Headlamp , (8IR),(8IV)
    • OEM Wiring Diagrams High-Voltage Battery Charging , (Es6)
    • OEM Wiring Diagrams High-Voltage Battery System , (J9C)
    • OEM Wiring Diagrams High-Voltage Battery System , (J9D)
    • OEM Wiring Diagrams High-Voltage Heater (PTC) For High-Voltage Battery System
    • OEM Wiring Diagrams High-Voltage System Can Bus Network Data Bus
    • OEM Wiring Diagrams High-Voltage System Pilot Line
    • OEM Wiring Diagrams Hood Contact Switch
    • OEM Wiring Diagrams Horn
    • OEM Wiring Diagrams Infotainment Can Bus Network Data Bus
    • OEM Wiring Diagrams Instrument Cluster
    • OEM Wiring Diagrams Interior Lighting
    • OEM Wiring Diagrams Interior Rearview Mirror , (4L6)
    • OEM Wiring Diagrams Lid Release - Rear
    • OEM Wiring Diagrams Light Switch
    • OEM Wiring Diagrams MULTIFUNCTION Steering Wheel
    • OEM Wiring Diagrams Multimedia System
    • OEM Wiring Diagrams Parking Distance Control , (7X2),(8A2)
    • OEM Wiring Diagrams Peripheral Camera , (KA6)
    • OEM Wiring Diagrams Power Rear Lid , (5I6)
    • OEM Wiring Diagrams Power Steering, Electromechanical
    • OEM Wiring Diagrams Powertrain Can Bus Network Data Bus
    • OEM Wiring Diagrams Radiator Fan
    • OEM Wiring Diagrams Rear Window Defogger
    • OEM Wiring Diagrams Rearview Camera (Rear Assist) , (KA2)
    • OEM Wiring Diagrams Roof Shade , (3FG)
    • OEM Wiring Diagrams Seat Adjustment , (1R3),(3PR),(8I6),(L0L)
    • OEM Wiring Diagrams Seat Adjustment , (3PT)
    • OEM Wiring Diagrams Seat Heating , (4A3),(4A4)
    • OEM Wiring Diagrams Sound System , (9VG),(9VH)
    • OEM Wiring Diagrams Steering Column Electronic Systems
    • OEM Wiring Diagrams Suspension Can Bus Network Data Bus
    • OEM Wiring Diagrams Tail Lamps , (8VG)
    • OEM Wiring Diagrams Thermal Management , (9M0)
    • OEM Wiring Diagrams Thermal Management , (9M3)
    • OEM Wiring Diagrams Trailer Mode , (1D6),(#D3)
    • OEM Wiring Diagrams USB Charging Socket , (U9E)
    • OEM Wiring Diagrams Windshield Defogger , (4GW)
    • OEM Wiring Diagrams Windshield Projection Head Up Display , (KS3)
    • OEM Wiring Diagrams Wiper And Washer System, Windshield
    • System Wiring Diagrams
    • Using lemon2025'S System Wiring Diagrams
    • Wiring
• Accessories & Equipment
  • Anti-Theft Systems
    • Front Doors, Central Locking System
    • Interior Lights, Switches
  • Collision/Avoidance
    • Driver Assistance Systems
    • General, Technical Data (Driver Assistance Systems (NAR))
  • Communication Devices
    • General, Technical Data (Communication (NAR))
    • General, Technical Data (Driver Assistance Systems (NAR))
  • Drivers Assistance Systems - ADAS
    • General, Technical Data (Communication (NAR))
    • General, Technical Data (Driver Assistance Systems (NAR))
  • Entertainment Systems
    • Communication
  • Exterior Lights
    • Exterior Lights, Switches
    • General, Technical Data (Body Exterior (North AMERICA))
  • Gauges & Instrument Panels
    • General, Technical Data (Body Interior (North AMERICA))
    • Instruments
    • Interior Equipment
  • Infotainment
    • Communication
    • General, Technical Data (Communication (NAR))
  • Interior/Exterior Trim
    • Exterior Equipment
    • General, Technical Data (Body Exterior (North AMERICA))
    • General, Technical Data (Body Interior (North AMERICA))
    • Interior Equipment
    • Interior Trim
  • Interior/Illumination Lights
    • General, Technical Data (Body Interior (North AMERICA))
  • Mirrors
    • Exterior Equipment
    • General, Technical Data (Body Exterior (North AMERICA))
    • Interior Equipment
  • Seats
    • General, Technical Data (Body Interior (North AMERICA))
    • Seat Frames
    • Seat Upholstery, Covers
  • Warning Systems
    • Driver Assistance Systems
    • General, Technical Data (Communication (NAR))
    • General, Technical Data (Driver Assistance Systems (NAR))
  • Window Motors & Regulators
    • Front Doors, Central Locking System
    • General, Technical Data (Guide For Locating Water Leaks)
    • Glass, Window Regulators
    • Rear Doors
  • Wiper/Washer Systems
• Body & Frame
  • Door Locks
    • Front Doors, Central Locking System
    • Interior Lights, Switches
  • Exterior Body Panels
    • Body Front
    • Bumpers
    • Exterior Equipment
    • Front Doors, Central Locking System
    • General, Technical Data (Body Exterior (North AMERICA))
    • Hood, Lids
    • Rear Doors
  • Exterior/Interior Trim
    • Exterior Equipment
    • General, Technical Data (Body Exterior (North AMERICA))
    • General, Technical Data (Body Interior (North AMERICA))
    • Interior Equipment
    • Interior Trim
  • Mirrors
    • Exterior Equipment
    • General, Technical Data (Body Exterior (North AMERICA))
    • Interior Equipment
  • Seats
    • General, Technical Data (Body Interior (North AMERICA))
    • Seat Frames
    • Seat Upholstery, Covers
  • Sun Roof/T-Top/Convertible Top
    • General, Technical Data (Guide For Locating Water Leaks)
    • Sunroof
  • Windows
    • Front Doors, Central Locking System
    • General, Technical Data (Guide For Locating Water Leaks)
    • Glass, Window Regulators
    • Rear Doors
• Drivelines & Axles
  • Axle Shafts
    • Final Drive, Differential
  • Differentials & Drive Axles
    • Final Drive, Differential
• Electrical
  • Body Electrical
    • General, Technical Data (Electrical Equipment (NAR))
    • Wiring
  • Charging Systems
    • Battery, Starter, Generator, Cruise Control
    • General, Technical Data (Electrical Equipment (NAR))
  • Id.4 - Component Locations
  • Fuses & Circuit Breakers
    • Wiring
  • Gauges
    • General, Technical Data (Body Interior (North AMERICA))
    • Instruments
    • Interior Equipment
  • Motors, Switches, Relays
    • General, Technical Data (Electrical Equipment (NAR))
    • Wiring
  • Wiring Diagrams
    • OEM Wiring Diagrams 12 V Sockets
    • OEM Wiring Diagrams A/C System , (KH4),(KH7)
    • OEM Wiring Diagrams Access And Start Authorization , (4I6),(4I7),(4I8),(4K5),(4K6),(4K7)
    • OEM Wiring Diagrams Adaptive Cruise Control , (8T3), (8T8)
    • OEM Wiring Diagrams Airbag Systems , (4UM)
    • OEM Wiring Diagrams Ambient Lighting , (UD1),(UD2),(UD3),(UD6)
    • OEM Wiring Diagrams Assistance Systems , (7Y1)
    • OEM Wiring Diagrams Auxiliary Air Heater (PTC) , (7E7)
    • OEM Wiring Diagrams Brake System
    • OEM Wiring Diagrams Cell Phone System , (9IJ),(9ZV)
    • OEM Wiring Diagrams Communication , (NZ2),(NZ4)
    • OEM WIRING DIAGRAMS COMMUNICATION CAN BUS NETWORK DATA BUS From May 2020
    • OEM Wiring Diagrams Convenience Can Bus Network Data Bus
    • OEM Wiring Diagrams Data Bus On Board Diagnostic Interface And Diagnostic Link Connector (DLC)
    • OEM Wiring Diagrams Driver Assistance Systems Can Bus Network Data Bus
    • OEM Wiring Diagrams Driver Assistance Systems Front Camera
    • OEM Wiring Diagrams Driver Door Control Modules , (L0L)
    • OEM Wiring Diagrams Driver Information System Can Bus Network Data Bus
    • OEM Wiring Diagrams Electric Drive System For Front Axle , EBRA,ECUA
    • OEM Wiring Diagrams Electric Drive System For Rear Axle , EBJA,EBJC,EBNA,EBRA,ECUA
    • OEM Wiring Diagrams Electric Drive System, Engine/Motor Control Module , EBJA,EBJC,EBNA,EBRA,ECUA
    • OEM Wiring Diagrams Engine Sound Generator
    • OEM Wiring Diagrams ETHERNET Network Data Bus
    • OEM Wiring Diagrams Front Passenger Door Control Modules , (L0L)
    • OEM Wiring Diagrams Fuse Assignment, Engine/Motor Compartment
    • OEM Wiring Diagrams Fuse Assignment, Passenger Compartment
    • OEM Wiring Diagrams Ground Concept In Engine/Motor Compartment
    • OEM Wiring Diagrams Ground Concept In Luggage Compartment
    • OEM Wiring Diagrams Ground Concept In Underbody
    • OEM Wiring Diagrams Ground Concept In Vehicle Interior
    • OEM Wiring Diagrams Headlamp , (8IR),(8IV)
    • OEM Wiring Diagrams High-Voltage Battery Charging , (Es6)
    • OEM Wiring Diagrams High-Voltage Battery System , (J9C)
    • OEM Wiring Diagrams High-Voltage Battery System , (J9D)
    • OEM Wiring Diagrams High-Voltage Heater (PTC) For High-Voltage Battery System
    • OEM Wiring Diagrams High-Voltage System Can Bus Network Data Bus
    • OEM Wiring Diagrams High-Voltage System Pilot Line
    • OEM Wiring Diagrams Hood Contact Switch
    • OEM Wiring Diagrams Horn
    • OEM Wiring Diagrams Infotainment Can Bus Network Data Bus
    • OEM Wiring Diagrams Instrument Cluster
    • OEM Wiring Diagrams Interior Lighting
    • OEM Wiring Diagrams Interior Rearview Mirror , (4L6)
    • OEM Wiring Diagrams Lid Release - Rear
    • OEM Wiring Diagrams Light Switch
    • OEM Wiring Diagrams MULTIFUNCTION Steering Wheel
    • OEM Wiring Diagrams Multimedia System
    • OEM Wiring Diagrams Parking Distance Control , (7X2),(8A2)
    • OEM Wiring Diagrams Peripheral Camera , (KA6)
    • OEM Wiring Diagrams Power Rear Lid , (5I6)
    • OEM Wiring Diagrams Power Steering, Electromechanical
    • OEM Wiring Diagrams Powertrain Can Bus Network Data Bus
    • OEM Wiring Diagrams Radiator Fan
    • OEM Wiring Diagrams Rear Window Defogger
    • OEM Wiring Diagrams Rearview Camera (Rear Assist) , (KA2)
    • OEM Wiring Diagrams Roof Shade , (3FG)
    • OEM Wiring Diagrams Seat Adjustment , (1R3),(3PR),(8I6),(L0L)
    • OEM Wiring Diagrams Seat Adjustment , (3PT)
    • OEM Wiring Diagrams Seat Heating , (4A3),(4A4)
    • OEM Wiring Diagrams Sound System , (9VG),(9VH)
    • OEM Wiring Diagrams Steering Column Electronic Systems
    • OEM Wiring Diagrams Suspension Can Bus Network Data Bus
    • OEM Wiring Diagrams Tail Lamps , (8VG)
    • OEM Wiring Diagrams Thermal Management , (9M0)
    • OEM Wiring Diagrams Thermal Management , (9M3)
    • OEM Wiring Diagrams Trailer Mode , (1D6),(#D3)
    • OEM Wiring Diagrams USB Charging Socket , (U9E)
    • OEM Wiring Diagrams Windshield Defogger , (4GW)
    • OEM Wiring Diagrams Windshield Projection Head Up Display , (KS3)
    • OEM Wiring Diagrams Wiper And Washer System, Windshield
    • System Wiring Diagrams
    • Using lemon2025'S System Wiring Diagrams
    • Wiring
• Engine Mechanical
  • Cooling System (Mechanical)
  • Exhaust
    • General Information
    • General, Technical Data (1-Speed Front Transmission, 0MJ (NAR))
    • General, Technical Data (Safety Precautions And Repair Information)
  • Mechanical
    • General Information
    • General, Technical Data (1-Speed Front Transmission, 0MJ (NAR))
    • General, Technical Data (Safety Precautions And Repair Information)
• Engine Performance
  • Emissions
    • Emission Control Abbreviations
    • State Emission Standards - Diesel
    • State Emission Standards - Gas
• 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
    • General, Technical Data (Safety Precautions And Repair 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
    • 2023 VW Service
    • 2024 VW Service
    • General Information
    • General, Technical Data (Guide For Locating Water Leaks)
    • General, Technical Data (Noise Detection And Diagnosis Guide)
    • General, Technical Data (Safety Precautions And Repair Information)
  • Maintenance Reminder Light (Reset Procedures)
  • Specifications Index
    • Common Specs & Procedures
  • 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
    • General, Technical Data (Heating, Ventilation And Air Conditioning, North AMERICA)
  • General Servicing
    • General, Technical Data (Heating, Ventilation And Air Conditioning, North AMERICA)
  • HVAC Control Systems
    • Air Conditioning
    • General, Technical Data (Heating, Ventilation And Air Conditioning, North AMERICA)
• Hybrid/Electric Powertrain
  • Battery Management Systems
    • Electric Drive
    • General Information
    • General, Technical Data (1-Speed Front Transmission, 0MJ (NAR))
    • General, Technical Data (Electric Rear Wheel Drive EIP220 And All Wheel Drive EIA210)
    • General, Technical Data (Electrical Equipment (NAR))
    • General, Technical Data (Safety Precautions And Repair Information)
  • Cooling Systems
    • Cooling System
    • General, Technical Data (Electric Rear Wheel Drive EIP220 And All Wheel Drive EIA210)
  • Electric Converters and Controllers
    • Electric Drive
    • General Information
    • General, Technical Data (1-Speed Front Transmission, 0MJ (NAR))
    • General, Technical Data (Electric Rear Wheel Drive EIP220 And All Wheel Drive EIA210)
    • General, Technical Data (Electrical Equipment (NAR))
  • Electric Motor Systems
    • Electric Drive
    • Engine Assembly
    • General Information
    • General, Technical Data (1-Speed Front Transmission, 0MJ (NAR))
    • General, Technical Data (Electric Rear Wheel Drive EIP220 And All Wheel Drive EIA210)
    • General, Technical Data (Electrical Equipment (NAR))
  • Testing and Diagnosis
    • Electric Drive
• Maintenance
  • Maintenance Reminder Light (Reset Procedures)
• Restraints
  • Air Bag, SRS
    • Passenger Protection, Airbags, Seat Belts
  • Passive Restraints
    • Passenger Protection, Airbags, Seat Belts
• Steering
  • Steering Column
  • Steering Control Systems
    • General, Technical Data (Suspension, Wheels, Steering (NAR))
  • Steering Gear
    • General, Technical Data (Suspension, Wheels, Steering (NAR))
    • Steering
  • Steering Linkage
• Suspension
  • Electronic Suspension
    • Self-Leveling Suspension
  • Front Suspension
    • Front Suspension
    • General, Technical Data (Suspension, Wheels, Steering (NAR))
  • Rear Suspension
    • General, Technical Data (Suspension, Wheels, Steering (NAR))
    • Rear Suspension
  • Wheel Alignment
    • General, Technical Data (Suspension, Wheels, Steering (NAR))
    • VOLKSWAGEN Wheel Alignment Specifications - Id.4
    • Wheels, Tires And Wheel Alignment
    • Wheels, Tires, Wheel Alignment
  • Wheels & Tire System
    • General, Technical Data (Suspension, Wheels, Steering (NAR))
• Transmission
  • Automatic Trans
    • Controls, Housing
    • General, Technical Data (1-Speed Front Transmission, 0MJ (NAR))
  • Transmission Control Systems
    • Controls, Housing
    • General, Technical Data (1-Speed Front Transmission, 0MJ (NAR))
• External Pages