Repair and Diagnosis

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• Quick Lookups
  • Common Specs & Procedures
  • Technical Bulletins
    • Campaigns
    • Safety Recalls
    • Technical Service Bulletins
  • Tire Fitment
  • Wiring Diagrams
    • OEM Wiring Diagrams 12 V Sockets, Cigarette Lighter
    • OEM Wiring Diagrams A/C System , (9AK)
    • OEM Wiring Diagrams A/C System , (9AQ)
    • OEM Wiring Diagrams Access And Start Authorization , (2F0)
    • OEM Wiring Diagrams Access And Start Authorization , (2F1)
    • OEM Wiring Diagrams Adaptive Cruise Control , (8T3),(8T8)
    • OEM Wiring Diagrams Adaptive Cruise Control , (8T4),(8T5)
    • OEM Wiring Diagrams Airbag Systems (USA) , (4UH)
    • OEM Wiring Diagrams Assistance Systems , (JX1)
    • OEM Wiring Diagrams Automatic Dimming Interior Rearview Mirror, Rain Sensor
    • OEM Wiring Diagrams Auxiliary Heater , (7E1)
    • OEM Wiring Diagrams Brake System
    • OEM Wiring Diagrams Cd Changer , (7D5)
    • OEM Wiring Diagrams Cell Phone System , (9ZE),(9ZV),(9ZX)
    • OEM Wiring Diagrams Center Console Switch
    • OEM Wiring Diagrams Communication , (IV1),(IV2),(IV3),(IV4),(IV5),(IV6),(IV7),(IV8),(IV9),(JE0),(JE1),(JE3),(JE4),(JE6)
    • OEM Wiring Diagrams Convenience System
    • OEM Wiring Diagrams Digital TV Tuner , (Q0A),(Q0B),(QU1),(QV1)
    • OEM Wiring Diagrams Door, Driver , (L0L)
    • OEM Wiring Diagrams Door, Front Passenger , (L0L)
    • OEM Wiring Diagrams Door, Left Rear , (L0L)
    • OEM Wiring Diagrams Door, Right Rear , (L0L)
    • OEM Wiring Diagrams Driver Assistance Systems Front Camera , (QK1)
    • OEM Wiring Diagrams Driver Seat , (L0L),(Q1A)
    • OEM Wiring Diagrams Driver Seat , (L0L),(Q2J)
    • OEM Wiring Diagrams Driver Seat , (L0L),(Q4Q),(Q1D)
    • OEM Wiring Diagrams Electric Drive System
    • OEM Wiring Diagrams External Usage Interface , (IU3),(IU4)
    • OEM Wiring Diagrams Front Passenger Seat , (L0L),(Q1A)
    • OEM Wiring Diagrams Front Passenger Seat , (L0L),(Q2J)
    • OEM Wiring Diagrams Front Passenger Seat , (L0L),(Q4Q),(Q1D)
    • OEM Wiring Diagrams Fuse Positions
    • OEM Wiring Diagrams Garage Door Opener , (VC2)
    • OEM Wiring Diagrams Headlamps Led , (8IV)
    • OEM Wiring Diagrams Headlamps Led , (8IY)
    • OEM Wiring Diagrams High-Voltage Battery System
    • OEM Wiring Diagrams High-Voltage System
    • OEM Wiring Diagrams High-Voltage System Charging Socket , (Es6)
    • OEM Wiring Diagrams High-Voltage System Charging Socket , (Es7)
    • OEM Wiring Diagrams Horn, Dual Tone
    • OEM Wiring Diagrams Infotainment Most Bus
    • OEM Wiring Diagrams Instrument Cluster
    • OEM Wiring Diagrams Lane Change Assistance , (7Y1)
    • OEM Wiring Diagrams Level Control System
    • OEM Wiring Diagrams Light Switch
    • OEM Wiring Diagrams MMI (Information Electronics 1)
    • OEM Wiring Diagrams Multimedia System , (9WQ)
    • OEM Wiring Diagrams Network Data Bus
    • OEM Wiring Diagrams Network Data Bus (FLEXRAY Bus)
    • OEM Wiring Diagrams Parking Distance Control , (7X2)
    • OEM Wiring Diagrams Parking Distance Control , (7X5),(9X9),(KA0),(KA2)
    • OEM Wiring Diagrams Parking Distance Control , (KA6)
    • OEM Wiring Diagrams Peripheral Camera , (KA6)
    • OEM Wiring Diagrams Power Rear Lid , (4E7)
    • OEM Wiring Diagrams Power Steering, Electromechanical
    • OEM Wiring Diagrams Rear Window Defogger
    • OEM Wiring Diagrams Rearview Camera (Rear Assist) , (KA2)
    • OEM Wiring Diagrams Roof Module
    • OEM Wiring Diagrams Seat Heating, Front , (5C1)
    • OEM Wiring Diagrams Seat Heating, Front , (L0L),(Q1A)
    • OEM Wiring Diagrams Seat Heating, Front , (L0L),(Q1D),(Q4Q),(Q2J)
    • OEM Wiring Diagrams Seat Lumbar Adjustment , (3L3)
    • OEM Wiring Diagrams Seat Ventilation , (L0L)
    • OEM Wiring Diagrams Seats, Heated Rear , (4A4)
    • OEM Wiring Diagrams Sound System , (8RM),(9VD)
    • OEM Wiring Diagrams Sound System , (9VS)
    • OEM Wiring Diagrams Steering Column Adjustment , (2C7)
    • OEM Wiring Diagrams Steering Column Electronic Systems
    • OEM Wiring Diagrams Sunroof, Panorama , (3FU)
    • OEM Wiring Diagrams Tail Lamps With Led, Only For Us Equipment , (Av2)
    • OEM Wiring Diagrams Thermal Management
    • OEM Wiring Diagrams Tire Pressure Monitoring , (7K3)
    • OEM Wiring Diagrams Trailer Mode , (5C0)
    • OEM Wiring Diagrams Trailer Mode, Only For Us Equipment , (5C1)
    • OEM Wiring Diagrams USB Connections For Data Transfer , (IU0),(IU1),(IU2),(IU5),(UE8)
    • OEM Wiring Diagrams Vanity Mirror
    • OEM Wiring Diagrams Windshield Projection Head Up Display , (KS1)
    • OEM Wiring Diagrams Wiper And Washer System, Heated Spray Nozzles, Windshield And Headlamp , (9PA)
    • OEM Wiring Diagrams Wiper And Washer System, Heated Spray Nozzles, Windshield And Headlamp , (9PF)
    • System Wiring Diagrams
    • Using lemon2025'S System Wiring Diagrams
    • Wires
    • Wiring
• Accessories & Equipment
  • Accessories Control Systems
    • General, Technical Data (Communication)
  • Anti-Theft Systems
    • Front Doors, Central Locking System
    • Interior Lights, Lamps And Switches
    • Interior Lights, Switches
  • Collision/Avoidance
    • Driver Assistance Systems
    • General, Technical Data (Driver Assistance Systems)
  • Communication Devices
    • General, Technical Data (Communication)
    • General, Technical Data (Driver Assistance Systems)
  • Drivers Assistance Systems - ADAS
    • General, Technical Data (Communication)
    • General, Technical Data (Driver Assistance Systems)
  • Entertainment Systems
    • Communication
    • Communication (Retrofitting Transmitter Units)
  • Exterior Lights
    • Exterior Lights, Lamps And Switches
    • Exterior Lights, Switches
  • Gauges & Instrument Panels
    • Instruments
    • Interior Equipment
  • Infotainment
    • Communication
    • Communication (Retrofitting Transmitter Units)
  • Interior/Exterior Trim
    • Exterior Equipment
    • General, Technical Data (Body Exterior)
    • General, Technical Data (Body Interior)
    • Interior Equipment
    • Interior Trim
  • Mirrors
    • Exterior Equipment
    • General, Technical Data (Body Exterior)
    • General, Technical Data (Body Interior)
    • Interior Equipment
  • Seats
    • General, Technical Data (Body Interior)
    • General, Technical Data (Seats)
    • Seat Frames
    • Seat Upholstery, Covers
  • Warning Systems
    • Driver Assistance Systems
  • Window Motors & Regulators
    • Front Doors, Central Locking System
    • Glass, Window Regulators
    • Rear Doors
  • Wiper/Washer Systems
    • Windshield Washer System
    • Wiper/Washer Systems
• Body & Frame
  • Door Locks
    • Front Doors, Central Locking System
    • Interior Lights, Lamps And Switches
    • Interior Lights, Switches
  • Exterior Body Panels
    • Body Front
    • Bumpers
    • Exterior Equipment
    • Front Doors, Central Locking System
    • General, Technical Data (Body Exterior)
    • Hood, Lids
    • Rear Doors
  • Exterior/Interior Trim
    • Exterior Equipment
    • General, Technical Data (Body Exterior)
    • General, Technical Data (Body Interior)
    • Interior Equipment
    • Interior Trim
  • Mirrors
    • Exterior Equipment
    • General, Technical Data (Body Exterior)
    • General, Technical Data (Body Interior)
    • Interior Equipment
  • Seats
    • General, Technical Data (Body Interior)
    • General, Technical Data (Seats)
    • Seat Frames
    • Seat Upholstery, Covers
  • Sun Roof/T-Top/Convertible Top
    • Sunroof
  • Windows
    • Front Doors, Central Locking System
    • Glass, Window Regulators
    • Rear Doors
• Brakes
  • Anti-Lock Brakes
    • Antilock Brake System
    • General, Technical Data (Brake System)
  • Mechanical - Hydraulic
    • Brake System Hydraulic Components
    • Brake System Mechanical Components
    • General, Technical Data (Brake System)
  • Parking Brake System
    • Brake System Mechanical Components
  • Traction Control
    • Antilock Brake System
    • General, Technical Data (Brake System)
• Drivelines & Axles
  • Axle Shafts
    • Final Drive, Differential (Front Transmission, 0MA)
    • Final Drive, Differential (Rear Transmission 0MB, 0MC)
  • Differentials & Drive Axles
    • Final Drive, Differential (Front Transmission, 0MA)
    • Final Drive, Differential (Rear Transmission 0MB, 0MC)
    • Gears, Shafts
• Electrical
  • Body Electrical
    • General, Technical Data (Electrical Equipment)
    • Wires
    • Wiring
  • Charging Systems
    • Battery And Generator
    • Battery, Starter, Generator, Cruise Control
    • General, Technical Data (Electrical Equipment)
  • Fuses & Circuit Breakers
    • Wires
    • Wiring
  • Gauges
    • Instruments
    • Interior Equipment
  • Motors, Switches, Relays
    • General, Technical Data (Electrical Equipment)
    • Wires
    • Wiring
  • Wiring Diagrams
    • OEM Wiring Diagrams 12 V Sockets, Cigarette Lighter
    • OEM Wiring Diagrams A/C System , (9AK)
    • OEM Wiring Diagrams A/C System , (9AQ)
    • OEM Wiring Diagrams Access And Start Authorization , (2F0)
    • OEM Wiring Diagrams Access And Start Authorization , (2F1)
    • OEM Wiring Diagrams Adaptive Cruise Control , (8T3),(8T8)
    • OEM Wiring Diagrams Adaptive Cruise Control , (8T4),(8T5)
    • OEM Wiring Diagrams Airbag Systems (USA) , (4UH)
    • OEM Wiring Diagrams Assistance Systems , (JX1)
    • OEM Wiring Diagrams Automatic Dimming Interior Rearview Mirror, Rain Sensor
    • OEM Wiring Diagrams Auxiliary Heater , (7E1)
    • OEM Wiring Diagrams Brake System
    • OEM Wiring Diagrams Cd Changer , (7D5)
    • OEM Wiring Diagrams Cell Phone System , (9ZE),(9ZV),(9ZX)
    • OEM Wiring Diagrams Center Console Switch
    • OEM Wiring Diagrams Communication , (IV1),(IV2),(IV3),(IV4),(IV5),(IV6),(IV7),(IV8),(IV9),(JE0),(JE1),(JE3),(JE4),(JE6)
    • OEM Wiring Diagrams Convenience System
    • OEM Wiring Diagrams Digital TV Tuner , (Q0A),(Q0B),(QU1),(QV1)
    • OEM Wiring Diagrams Door, Driver , (L0L)
    • OEM Wiring Diagrams Door, Front Passenger , (L0L)
    • OEM Wiring Diagrams Door, Left Rear , (L0L)
    • OEM Wiring Diagrams Door, Right Rear , (L0L)
    • OEM Wiring Diagrams Driver Assistance Systems Front Camera , (QK1)
    • OEM Wiring Diagrams Driver Seat , (L0L),(Q1A)
    • OEM Wiring Diagrams Driver Seat , (L0L),(Q2J)
    • OEM Wiring Diagrams Driver Seat , (L0L),(Q4Q),(Q1D)
    • OEM Wiring Diagrams Electric Drive System
    • OEM Wiring Diagrams External Usage Interface , (IU3),(IU4)
    • OEM Wiring Diagrams Front Passenger Seat , (L0L),(Q1A)
    • OEM Wiring Diagrams Front Passenger Seat , (L0L),(Q2J)
    • OEM Wiring Diagrams Front Passenger Seat , (L0L),(Q4Q),(Q1D)
    • OEM Wiring Diagrams Fuse Positions
    • OEM Wiring Diagrams Garage Door Opener , (VC2)
    • OEM Wiring Diagrams Headlamps Led , (8IV)
    • OEM Wiring Diagrams Headlamps Led , (8IY)
    • OEM Wiring Diagrams High-Voltage Battery System
    • OEM Wiring Diagrams High-Voltage System
    • OEM Wiring Diagrams High-Voltage System Charging Socket , (Es6)
    • OEM Wiring Diagrams High-Voltage System Charging Socket , (Es7)
    • OEM Wiring Diagrams Horn, Dual Tone
    • OEM Wiring Diagrams Infotainment Most Bus
    • OEM Wiring Diagrams Instrument Cluster
    • OEM Wiring Diagrams Lane Change Assistance , (7Y1)
    • OEM Wiring Diagrams Level Control System
    • OEM Wiring Diagrams Light Switch
    • OEM Wiring Diagrams MMI (Information Electronics 1)
    • OEM Wiring Diagrams Multimedia System , (9WQ)
    • OEM Wiring Diagrams Network Data Bus
    • OEM Wiring Diagrams Network Data Bus (FLEXRAY Bus)
    • OEM Wiring Diagrams Parking Distance Control , (7X2)
    • OEM Wiring Diagrams Parking Distance Control , (7X5),(9X9),(KA0),(KA2)
    • OEM Wiring Diagrams Parking Distance Control , (KA6)
    • OEM Wiring Diagrams Peripheral Camera , (KA6)
    • OEM Wiring Diagrams Power Rear Lid , (4E7)
    • OEM Wiring Diagrams Power Steering, Electromechanical
    • OEM Wiring Diagrams Rear Window Defogger
    • OEM Wiring Diagrams Rearview Camera (Rear Assist) , (KA2)
    • OEM Wiring Diagrams Roof Module
    • OEM Wiring Diagrams Seat Heating, Front , (5C1)
    • OEM Wiring Diagrams Seat Heating, Front , (L0L),(Q1A)
    • OEM Wiring Diagrams Seat Heating, Front , (L0L),(Q1D),(Q4Q),(Q2J)
    • OEM Wiring Diagrams Seat Lumbar Adjustment , (3L3)
    • OEM Wiring Diagrams Seat Ventilation , (L0L)
    • OEM Wiring Diagrams Seats, Heated Rear , (4A4)
    • OEM Wiring Diagrams Sound System , (8RM),(9VD)
    • OEM Wiring Diagrams Sound System , (9VS)
    • OEM Wiring Diagrams Steering Column Adjustment , (2C7)
    • OEM Wiring Diagrams Steering Column Electronic Systems
    • OEM Wiring Diagrams Sunroof, Panorama , (3FU)
    • OEM Wiring Diagrams Tail Lamps With Led, Only For Us Equipment , (Av2)
    • OEM Wiring Diagrams Thermal Management
    • OEM Wiring Diagrams Tire Pressure Monitoring , (7K3)
    • OEM Wiring Diagrams Trailer Mode , (5C0)
    • OEM Wiring Diagrams Trailer Mode, Only For Us Equipment , (5C1)
    • OEM Wiring Diagrams USB Connections For Data Transfer , (IU0),(IU1),(IU2),(IU5),(UE8)
    • OEM Wiring Diagrams Vanity Mirror
    • OEM Wiring Diagrams Windshield Projection Head Up Display , (KS1)
    • OEM Wiring Diagrams Wiper And Washer System, Heated Spray Nozzles, Windshield And Headlamp , (9PA)
    • OEM Wiring Diagrams Wiper And Washer System, Heated Spray Nozzles, Windshield And Headlamp , (9PF)
    • System Wiring Diagrams
    • Using lemon2025'S System Wiring Diagrams
    • Wires
    • Wiring
• Engine Mechanical
  • Exhaust
    • General, Technical Data (High-Voltage Vehicle General Information)
  • Mechanical
    • General, Technical Data (High-Voltage Vehicle General 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
  • 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
    • 2024 AUDI Service
    • General Information
    • General, Technical Data (High-Voltage Vehicle General Information)
    • 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)
  • HVAC Control Systems
    • Air Conditioning (Heating, Ventilation And Air Conditioning) (Actuators - Air Ionization)
    • Air Conditioning (Heating, Ventilation And Air Conditioning) (Component Location)
    • Air Conditioning (Refrigerant R1234YF Servicing) (A/C Service Station)
    • Air Conditioning (Refrigerant R1234YF Servicing) (Refrigerant Circuit)
    • Air Conditioning (Refrigerant R134A Servicing) (A/C System General Information)
    • Air Conditioning (Refrigerant R134A Servicing) (Pressures Checking)
    • Air Conditioning (Refrigerant R134A Servicing) (Refrigerant Capacities)
    • Air Conditioning (Refrigerant R134A Servicing) (Refrigerant Circuit)
    • General, Technical Data (Heating, Ventilation And Air Conditioning)
    • General, Technical Data (Refrigerant R1234YF Servicing)
    • Heating, Ventilation
• Hybrid/Electric Powertrain
  • Battery Management Systems
    • Electric Drive
    • General, Technical Data (Electric Drive Motor 0EF)
    • General, Technical Data (Electrical Equipment)
    • General, Technical Data (High-Voltage Vehicle General Information)
  • Cooling Systems
  • Electric Converters and Controllers
    • Electric Drive
    • General, Technical Data (Electric Drive Motor 0EF)
    • General, Technical Data (Electrical Equipment)
    • General, Technical Data (High-Voltage Vehicle General Information)
    • General, Technical Data (Rear Transmission 0MB, 0MC)
  • Electric Motor Systems
    • Electric Drive
    • Engine Assembly
    • General, Technical Data (Electric Drive Motor 0EF)
    • General, Technical Data (Front Transmission, 0MA)
    • General, Technical Data (High-Voltage Vehicle General Information)
    • General, Technical Data (Rear Transmission 0MB, 0MC)
  • 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
  • Manual Steering
    • General, Technical Data (Suspension, Wheels, Steering)
  • Power Steering
    • General, Technical Data (Suspension, Wheels, Steering)
  • Steering Column
  • Steering Gear
  • Steering Linkage
• Suspension
  • Electronic Suspension
    • Self-Leveling Suspension
  • Front Suspension
    • Front Suspension
    • General, Technical Data (Suspension, Wheels, Steering)
    • Wheels, Tires, Wheel Alignment (Suspension, Wheels, Steering)
  • Rear Suspension
    • General, Technical Data (Suspension, Wheels, Steering)
    • Rear Suspension
    • Wheels, Tires, Wheel Alignment (Suspension, Wheels, Steering)
  • Suspension Control Systems
    • General, Technical Data (Suspension, Wheels, Steering)
  • Wheel Alignment
    • AUDI Wheel Alignment Specifications - Q8 E-Tron
    • Wheels, Tires, Wheel Alignment (Suspension, Wheels, Steering)
    • Wheels, Tires, Wheel Alignment (Wheel And Tire Guide General Information)
    • Wheels, Tires, Wheel Alignment (Wheel And Tire Guide) (Air Pressures)
    • Wheels, Tires, Wheel Alignment (Wheel And Tire Guide) (Wheel Tire Combinations)
  • Wheels & Tire System
    • General, Technical Data (Suspension, Wheels, Steering)
    • Wheels, Tires, Wheel Alignment (Suspension, Wheels, Steering)
    • Wheels, Tires, Wheel Alignment (Wheel And Tire Guide General Information)
    • Wheels, Tires, Wheel Alignment (Wheel And Tire Guide) (Air Pressures)
    • Wheels, Tires, Wheel Alignment (Wheel And Tire Guide) (Wheel Tire Combinations)
• Transmission
  • Automatic Trans
    • Controls, Housing (Front Transmission, 0MA)
    • Controls, Housing (Rear Transmission 0MB, 0MC)
    • Gears, Shafts
    • General, Technical Data (Front Transmission, 0MA)
    • General, Technical Data (Rear Transmission 0MB, 0MC)
  • Manual Trans
    • Gears, Shafts
  • Transmission Control Systems
    • Controls, Housing (Front Transmission, 0MA)
    • Controls, Housing (Rear Transmission 0MB, 0MC)
    • General, Technical Data (Front Transmission, 0MA)