Repair and Diagnosis

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• Quick Lookups
  • Common Specs & Procedures
    • Common Specifications & Procedures (Cabriolet)
  • DTC Index
    • DTC Index (A3 Cabriolet)
    • DTC Index 1.8L
    • DTC Index 1.8L & 2.0L (CNTC, CNSB)
    • DTC Index 2.0L (CNTC)
    • DTC Index 2.0L (CYFB)
    • DTC Index 2.0L Diesel (CRUA, DEJA)
  • Electrical Component Locations
    • A3 - Component Locations (A/C - Final Drive)
    • A3 -- Component Locations (Final Drive - Wiring)
  • Fluids
  • Technical Bulletins
    • Safety Recalls
    • Technical Service Bulletins
  • Tire Fitment
  • Wiring Diagrams
    • OEM Connector End Views
    • System Wiring Diagrams
    • Using lemon2025'S System Wiring Diagrams
• Accessories & Equipment
  • Anti-Theft Systems
    • Front Doors, Central Locking System
    • Front Doors, Central Locking System -- (A3 Cabriolet)
    • Interior Lights, Lamps And Switches
    • Interior Lights, Lamps And Switches -- (A3)
    • Interior Lights, Switches
    • Interior Lights, Switches -- (A3)
  • Body Interior
    • General, Technical Data Body Exterior -- (A3 Cabriolet)
  • Collision/Avoidance
    • Driver Assistance Systems Front Camera
    • Driver Assistance Systems Front Camera Calibration
    • Lane Change Assistance System
    • Parallel Parking Assist System
    • Parking Aid System
    • Rearview Camera System (2017-19)
    • Wheels, Tires, Wheel Alignment (Suspension, Wheels, Steering)
    • Wheels, Tires, Wheel Alignment (Suspension, Wheels, Steering) -- (A3)
  • Cruise Control Systems
    • Adaptive Cruise Control (Acc) System Adjustment
    • Charging System (Battery, Generator, Stop/Start System & Cruise Control)
    • Wheels, Tires, Wheel Alignment (Suspension, Wheels, Steering)
    • Wheels, Tires, Wheel Alignment (Suspension, Wheels, Steering) -- (A3)
  • Drivers Assistance Systems - ADAS
    • Driver Assistance Systems Front Camera
    • Driver Assistance Systems Front Camera Calibration
    • Lane Change Assistance System
    • Parallel Parking Assist System
    • Parking Aid System
    • Rearview Camera System (2017-19)
    • Wheels, Tires, Wheel Alignment (Suspension, Wheels, Steering)
    • Wheels, Tires, Wheel Alignment (Suspension, Wheels, Steering) -- (A3)
  • Entertainment Systems
    • Communication
    • Communication (Cabriolet)
    • General, Technical Data Communication
    • Interior Lights, Lamps And Switches -- (A3)
  • Exterior Lights
    • Exterior Lights, Lamps And Switches
    • Exterior Lights, Lamps And Switches -- (A3)
    • Exterior Lights, Switches
    • Exterior Lights, Switches -- (A3 Cabriolet / Sedan)
  • Gauges & Instrument Panels
    • Instruments
    • Instruments -- (A3 Sedan/ Cabriolet)
  • Infotainment
    • Communication
    • Communication -- (A3 Cabriolet / Sedan)
    • Communication (Cabriolet)
    • Communication (Retrofitting)
    • General, Technical Data Communication
    • Interior Lights, Lamps And Switches -- (A3)
  • Interior/Exterior Trim
    • Exterior Equipment
    • Exterior Equipment (A3 Convertible)
    • Interior Equipment
    • Interior Trim
    • Interior Trim -- A3 Sedan /Cabriolet
  • Interior/Illumination Lights
    • Interior Lights, Lamps And Switches
    • Interior Lights, Lamps And Switches -- (A3)
    • Interior Lights, Switches
    • Interior Lights, Switches -- (A3)
  • Mirrors
    • Exterior Equipment
    • Exterior Equipment (A3 Convertible)
    • Interior Equipment
  • Seats
    • Seat Frames
    • Seat Frames -- (A3 Cabriolet)
    • Seat Upholstery, Covers
    • Seat Upholstery, Covers -- (A3 Cabriolet)
  • Warning Systems
    • Communication (Cabriolet)
  • Window Motors & Regulators
    • Exterior Equipment
    • Exterior Equipment (A3 Convertible)
    • Front Doors, Central Locking System
    • Front Doors, Central Locking System -- (A3 Cabriolet)
    • General, Technical Data Brakes -- (Cabriolet)
    • Glass, Window Regulators
    • Glass, Window Regulators -- (A3 Cabriolet)
    • Rear Doors
    • Rear Doors -- (A3 Cabriolet)
  • Wiper/Washer Systems
    • Windshield Washer System
    • Windshield Washer System -- (A3) (Convertible)
    • Wiper/Washer Systems
    • Wiper/Washer Systems -- (A3 Sedan/ Cabriolet)
  • Wiring System (Data Link Connectors, Pwr Dist., Grnd Dist.)
    • Wires
    • Wires -- A3 (Convertible)
    • Wiring
    • Wiring -- (A3 Sedan / Cabriolet)
• Body & Frame
  • Body, Cab Control Systems
    • General, Technical Data Body Exterior -- (A3 Cabriolet)
  • Door Locks
    • Front Doors, Central Locking System
    • Front Doors, Central Locking System -- (A3 Cabriolet)
    • Interior Lights, Lamps And Switches
    • Interior Lights, Lamps And Switches -- (A3)
    • Interior Lights, Switches
    • Interior Lights, Switches -- (A3)
  • Exterior Body Panels
    • Body Front
    • Body Front -- (A3 Cabriolet)
    • Bumpers
    • Bumpers -- (A3 Cabriolet)
    • Exterior Equipment
    • Exterior Equipment (A3 Convertible)
    • Front Doors, Central Locking System
    • Front Doors, Central Locking System -- (A3 Cabriolet)
    • General, Technical Data Body Exterior
    • Hood, Lids
    • Hood, Lids -- A3 Cabriolet
    • Rear Doors
    • Rear Doors -- (A3 Cabriolet)
  • Exterior/Interior Trim
    • Exterior Equipment
    • Exterior Equipment (A3 Convertible)
    • Interior Equipment
    • Interior Trim
    • Interior Trim -- A3 Sedan /Cabriolet
  • Frames, Subframes & Crossmembers
    • Exterior Equipment (A3 Convertible)
  • Mirrors
    • Exterior Equipment
    • Exterior Equipment (A3 Convertible)
    • Interior Equipment
  • Seats
    • Seat Frames
    • Seat Frames -- (A3 Cabriolet)
    • Seat Upholstery, Covers
    • Seat Upholstery, Covers -- (A3 Cabriolet)
  • Sun Roof/T-Top/Convertible Top
    • Convertible Top -- (A3 Cabriolet)
    • Sunroof
  • Towing Systems
    • Exterior Equipment (A3 Convertible)
  • Windows
    • Exterior Equipment
    • Exterior Equipment (A3 Convertible)
    • Front Doors, Central Locking System
    • Front Doors, Central Locking System -- (A3 Cabriolet)
    • General, Technical Data Brakes -- (Cabriolet)
    • Glass, Window Regulators
    • Glass, Window Regulators -- (A3 Cabriolet)
    • Rear Doors
    • Rear Doors -- (A3 Cabriolet)
• Brakes
  • Anti-Lock Brakes
    • Antilock Brake System
    • Antilock Brake System -- (Cabriolet)
    • General, Technical Data Brake System
    • General, Technical Data Brakes -- (Cabriolet)
  • Brakes Control Systems
    • General, Technical Data Brakes -- (Cabriolet)
  • Hose, Tubing, Fittings & Reservoirs
    • General, Technical Data Brakes -- (Cabriolet)
  • Mechanical - Hydraulic
    • General, Technical Data Brake System
    • General, Technical Data Brakes -- (Cabriolet)
    • Hydraulic Components (Brake System)
    • Mechanical Components (Brake System)
    • Mechanical Components (Brakes) -- (Cabriolet)
  • Parking Brake System
    • General, Technical Data Brake System
    • General, Technical Data Brakes -- (Cabriolet)
    • Mechanical Components (Brake System)
    • Mechanical Components (Brakes) -- (Cabriolet)
  • Traction Control
    • Antilock Brake System
    • Antilock Brake System -- (Cabriolet)
    • General, Technical Data Brake System
    • General, Technical Data Brakes -- (Cabriolet)
• Drivelines & Axles
  • Axle Shafts
    • Final Drive, Differential (0GC) -- (A3)
    • Front Suspension
    • Front Suspension -- (A3 Cabriolet / Sedan)
    • Rear Suspension
  • Differentials & Drive Axles
    • Final Drive, Differential (0GC) -- (A3)
    • Final Drive, Differential 7-Speed Dual Clutch Transmission 0GC
    • Final Drive, Differential Rear Final Drive
    • Gears, Shafts 6-Speed Dual Clutch Transmission
    • Gears, Shafts 7-Speed Dual Clutch Transmission 0DL
    • Gears, Shafts 7-Speed Dual Clutch Transmission 0GC
    • General, Technical Data Rear Final Drive
  • Driveshaft & Universal Joints
    • Final Drive, Differential Rear Final Drive
• Electrical
  • Body Electrical
    • OEM Connector End Views
    • Wires
    • Wires -- A3 (Convertible)
    • Wiring
    • Wiring -- (A3 Sedan / Cabriolet)
  • Charging Systems
    • Battery, Starter, Generator, Cruise Control-- (A3 Sedan / Cabriolet)
    • Charging System (Battery & Charging)
    • Charging System (Battery, Generator, Stop/Start System & Cruise Control)
    • General, Technical Data Electrical Equipment
    • Starter, Generator And Cruise Control -- (A3)
    • Technical Data High-Voltage Vehicle General Information
  • Component Locations
    • A3 - Component Locations (A/C - Final Drive)
    • A3 -- Component Locations (Final Drive - Wiring)
  • Fuses & Circuit Breakers
    • Wires
    • Wires -- A3 (Convertible)
    • Wiring
    • Wiring -- (A3 Sedan / Cabriolet)
  • Gauges
    • Instruments
    • Instruments -- (A3 Sedan/ Cabriolet)
  • Motors, Switches, Relays
    • OEM Connector End Views
    • Wires
    • Wires -- A3 (Convertible)
    • Wiring
    • Wiring -- (A3 Sedan / Cabriolet)
  • Starter
    • Charging System (Battery, Generator, Stop/Start System & Cruise Control)
    • Starter, Generator And Cruise Control -- (A3)
  • Wiring Diagrams
    • OEM Connector End Views
    • System Wiring Diagrams
    • Using lemon2025'S System Wiring Diagrams
• Engine Mechanical
  • Blowers, Superchargers & Turbochargers
    • Fuel Supply -- (A3)
    • Turbocharger, Supercharger [CZPB, CZRA] -- (A3)
    • Turbocharger, Supercharger [CZPB,CZRA,DBFB] -- (A3)
    • Turbocharger, Supercharger 2.0L (CZRA)
    • Turbocharger, Supercharger Servicing 2.0L (CZRA)
  • Cooling Fan
    • Cooling System [CZPB, CZRA] -- (A3)
    • Cooling System [CZPB,CZRA,DBFB] -- (A3)
    • Cooling System 2.0L (CNSB, CNTC, CYFB, DJJA)
    • Cooling System 2.0L (CZRA)
    • Cooling System 2.0L Diesel (CRUA, DEJA)
    • Cooling System 2.5L
    • Cooling System Servicing 2.0L (CNSB, CNTC, CYFB, DJJA)
    • Cooling System Servicing 2.0L (CZRA)
  • Cooling System (Mechanical)
    • Cooling System [CZPB, CZRA] -- (A3)
    • Cooling System [CZPB,CZRA,DBFB] -- (A3)
    • Cooling System 2.0L (CNSB, CNTC, CYFB, DJJA)
    • Cooling System 2.0L (CZRA)
    • Cooling System 2.0L Diesel (CRUA, DEJA)
    • Cooling System 2.5L
    • Cooling System Servicing 2.0L (CNSB, CNTC, CYFB, DJJA)
    • Cooling System Servicing 2.0L (CZRA)
  • Exhaust
    • Exhaust System Servicing 2.0L (CNSB, CNTC, CYFB, DJJA)
    • Exhaust System, Emission Controls [CZPB, CZRA] -- (A3)
    • Exhaust System, Emission Controls [CZPB,CZRA,DBFB] -- (A3)
    • Exhaust System, Emission Controls 2.0L (CNSB, CNTC, CYFB, DJJA)
    • Exhaust System, Emission Controls 2.0L (CZRA)
    • Exhaust System, Emission Controls 2.0L Diesel (CRUA, DEJA)
    • Exhaust System, Emission Controls Servicing 2.0L (CZRA)
    • General Information (Maintenance Procedures) -- (A3)
    • General, Technical Data (0GC) -- (A3)
    • General, Technical Data (Body Interior) -- (A3 Cabriolet)
    • General, Technical Data (HVAC) -- (A3 Cabriolet / Sedan)
    • General, Technical Data (Oil Gauge Tester) -- (A3)
    • General, Technical Data (Suspension) -- (A3 Cabriolet / Sedan)
    • General, Technical Data [CZPB, CZRA, DBFB] -- (A3)
    • General, Technical Data [CZPB, CZRA] -- (A3)
    • General, Technical Data 2.0L (CNSB, CNTC, CYFB, DJJA)
    • General, Technical Data 2.0L (CZRA)
    • General, Technical Data 2.0L Diesel (CRUA, DEJA)
    • General, Technical Data Electrical -- (A3 Cabriolet / Sedan)
    • General, Technical Data Refrigerant R1234YF Servicing -- (A3)
    • General, Technical Data Servicing 2.0L (CZRA)
  • Fuel System
    • Diesel Fuel Injection 2.0L Diesel (CRUA, DEJA)
    • Fuel Preparation And Injection Servicing 2.0L (CNSB, CNTC, CYFB, DJJA)
    • Fuel Supply Diesel Engines
    • Fuel Supply Gasoline Engines
    • Fuel Supply Using The Evaporative Emissions Tester
    • General Information (Maintenance Procedures) -- (A3)
    • General, Technical Data (0GC) -- (A3)
    • General, Technical Data (Body Interior) -- (A3 Cabriolet)
    • General, Technical Data (HVAC) -- (A3 Cabriolet / Sedan)
    • General, Technical Data (Oil Gauge Tester) -- (A3)
    • General, Technical Data (Suspension) -- (A3 Cabriolet / Sedan)
    • General, Technical Data [CZPB, CZRA, DBFB] -- (A3)
    • General, Technical Data [CZPB, CZRA] -- (A3)
    • General, Technical Data 2.0L (CNSB, CNTC, CYFB, DJJA)
    • General, Technical Data 2.0L (CZRA)
    • General, Technical Data 2.0L Diesel (CRUA, DEJA)
    • General, Technical Data Electrical -- (A3 Cabriolet / Sedan)
    • General, Technical Data Fuel Supply - Diesel Engines
    • General, Technical Data Fuel Supply - Gasoline Engines
    • General, Technical Data Refrigerant R1234YF Servicing -- (A3)
    • General, Technical Data Servicing 2.0L (CZRA)
    • MULTIPORT Fuel Injection [CZPB, CZRA] -- (A3)
    • MULTIPORT Fuel Injection [CZPB,CZRA,DBFB] -- (A3)
    • MULTIPORT Fuel Injection 2.0L (CZRA)
    • MULTIPORT Fuel Injection Servicing 2.0L (CZRA)
  • Lubrication System
    • General Information (Maintenance Procedures) -- (A3)
    • General, Technical Data (0GC) -- (A3)
    • General, Technical Data (Body Interior) -- (A3 Cabriolet)
    • General, Technical Data (HVAC) -- (A3 Cabriolet / Sedan)
    • General, Technical Data (Oil Gauge Tester) -- (A3)
    • General, Technical Data (Suspension) -- (A3 Cabriolet / Sedan)
    • General, Technical Data [CZPB, CZRA, DBFB] -- (A3)
    • General, Technical Data [CZPB, CZRA] -- (A3)
    • General, Technical Data 2.0L (CNSB, CNTC, CYFB, DJJA)
    • General, Technical Data 2.0L (CZRA)
    • General, Technical Data 2.0L Diesel (CRUA, DEJA)
    • General, Technical Data Electrical -- (A3 Cabriolet / Sedan)
    • General, Technical Data Oil Gauge Tester T40178 Service Values
    • General, Technical Data Refrigerant R1234YF Servicing -- (A3)
    • General, Technical Data Servicing 2.0L (CZRA)
    • Lubrication [CZPB,CZRA,DBFB] -- (A3)
    • Lubrication 2.0L (CZRA)
    • Lubrication Servicing 2.0L (CZRA)
  • Mechanical
    • Crankshaft Servicing 2.0L (CNSB, CNTC, CYFB, DJJA)
    • Crankshaft, Cylinder Block [CZPB, CZRA, DBFB] -- (A3)
    • Crankshaft, Cylinder Block [CZPB, CZRA] -- (A3)
    • Crankshaft, Cylinder Block 2.0L (CNSB, CNTC, CYFB)
    • Crankshaft, Cylinder Block 2.0L (CZRA)
    • Crankshaft, Cylinder Block 2.0L Diesel (CRUA, DEJA)
    • Crankshaft, Cylinder Block Servicing 2.0L (CZRA)
    • Cylinder Head And VALVETRAIN Servicing 2.0L (CNSB, CNTC, CYFB)
    • Cylinder Head, VALVETRAIN [CZPB, CZRA, DBFB] -- (A3)
    • Cylinder Head, VALVETRAIN [CZPB, CZRA] -- (A3)
    • Cylinder Head, VALVETRAIN 2.0L (CNSB, CNTC, CYFB)
    • Cylinder Head, VALVETRAIN 2.0L (CZRA)
    • Cylinder Head, VALVETRAIN 2.0L Diesel (CRUA, DEJA)
    • Cylinder Head, VALVETRAIN Servicing 2.0L (CZRA)
    • Engine Assembly [CZPB, CZRA] -- (A3)
    • Engine Assembly [CZPB,CZRA,DBFB] -- (A3)
    • Engine Assembly 2.0L (CNSB, CNTC, CYFB, DJJA)
    • Engine Assembly 2.0L (CZRA)
    • Engine Assembly 2.0L Diesel (CRUA, DEJA)
    • Engine Assembly Servicing 2.0L (CZRA)
    • Engine, Removing And Installing Servicing 2.0L (CNSB, CNTC, CYFB)
    • General Information (Maintenance Procedures) -- (A3)
    • General, Technical Data (0GC) -- (A3)
    • General, Technical Data (Body Interior) -- (A3 Cabriolet)
    • General, Technical Data (HVAC) -- (A3 Cabriolet / Sedan)
    • General, Technical Data (Oil Gauge Tester) -- (A3)
    • General, Technical Data (Suspension) -- (A3 Cabriolet / Sedan)
    • General, Technical Data [CZPB, CZRA, DBFB] -- (A3)
    • General, Technical Data [CZPB, CZRA] -- (A3)
    • General, Technical Data 2.0L (CNSB, CNTC, CYFB, DJJA)
    • General, Technical Data 2.0L (CZRA)
    • General, Technical Data 2.0L Diesel (CRUA, DEJA)
    • General, Technical Data Electrical -- (A3 Cabriolet / Sedan)
    • General, Technical Data Refrigerant R1234YF Servicing -- (A3)
    • General, Technical Data Servicing 2.0L (CZRA)
  • Starter
    • Charging System (Battery, Generator, Stop/Start System & Cruise Control)
    • Starter, Generator And Cruise Control -- (A3)
• Engine Performance
  • Emissions
    • Emission Applications
    • Emission Control Abbreviations
    • State Emission Standards - Diesel
    • State Emission Standards - Gas
  • Engine Control Systems
    • Generic Scan Tool 1.8L & 2.0L (CNTA,CNTC,CNSB)
    • Generic Scan Tool 1.8L & 2.0L (CNTC, CNSB) - Engine DTC Tables (Engine Control Module --, 2017 My)
    • Generic Scan Tool 1.8L & 2.0L (CNTC, CNSB) (Diagnostic Procedures)
    • Generic Scan Tool 1.8L & 2.0L (CNTC, CNSB) (Engine & Transmission DTC Tables)
    • Generic Scan Tool 1.8L & 2.0L (CNTC, CNSB) (Engine DTC Table)
    • Generic Scan Tool 2.0L (CNTC) - Engine DTC Tables
    • Generic Scan Tool 2.0L (CNTC) - Transmission DTC Tables & Diagnostic Procedures
    • Generic Scan Tool 2.0L (CNTC) (Engine DTC Tables)
    • Generic Scan Tool 2.0L (CNTC) (General Information)
  • Fuel Delivery
    • Diesel Fuel Injection 2.0L Diesel (CRUA, DEJA)
    • Fuel Preparation And Injection Servicing 2.0L (CNSB, CNTC, CYFB, DJJA)
    • Fuel Supply Diesel Engines
    • Fuel Supply Gasoline Engines
    • Fuel Supply Using The Evaporative Emissions Tester
    • General Information (Maintenance Procedures) -- (A3)
    • General, Technical Data (0GC) -- (A3)
    • General, Technical Data (Body Interior) -- (A3 Cabriolet)
    • General, Technical Data (HVAC) -- (A3 Cabriolet / Sedan)
    • General, Technical Data (Oil Gauge Tester) -- (A3)
    • General, Technical Data (Suspension) -- (A3 Cabriolet / Sedan)
    • General, Technical Data [CZPB, CZRA, DBFB] -- (A3)
    • General, Technical Data [CZPB, CZRA] -- (A3)
    • General, Technical Data 2.0L (CNSB, CNTC, CYFB, DJJA)
    • General, Technical Data 2.0L (CZRA)
    • General, Technical Data 2.0L Diesel (CRUA, DEJA)
    • General, Technical Data Electrical -- (A3 Cabriolet / Sedan)
    • General, Technical Data Fuel Supply - Diesel Engines
    • General, Technical Data Fuel Supply - Gasoline Engines
    • General, Technical Data Refrigerant R1234YF Servicing -- (A3)
    • General, Technical Data Servicing 2.0L (CZRA)
    • MULTIPORT Fuel Injection [CZPB, CZRA] -- (A3)
    • MULTIPORT Fuel Injection [CZPB,CZRA,DBFB] -- (A3)
    • MULTIPORT Fuel Injection 2.0L (CZRA)
    • MULTIPORT Fuel Injection Servicing 2.0L (CZRA)
  • Ignition System
    • General Information (Maintenance Procedures) -- (A3)
    • General, Technical Data (0GC) -- (A3)
    • General, Technical Data (Body Interior) -- (A3 Cabriolet)
    • General, Technical Data (HVAC) -- (A3 Cabriolet / Sedan)
    • General, Technical Data (Oil Gauge Tester) -- (A3)
    • General, Technical Data (Suspension) -- (A3 Cabriolet / Sedan)
    • General, Technical Data [CZPB, CZRA, DBFB] -- (A3)
    • General, Technical Data [CZPB, CZRA] -- (A3)
    • General, Technical Data 2.0L (CNSB, CNTC, CYFB, DJJA)
    • General, Technical Data 2.0L (CZRA)
    • General, Technical Data 2.0L Diesel (CRUA, DEJA)
    • General, Technical Data Electrical -- (A3 Cabriolet / Sedan)
    • General, Technical Data Refrigerant R1234YF Servicing -- (A3)
    • General, Technical Data Servicing 2.0L (CZRA)
    • Ignition System Servicing 2.0L (CNSB, CNTC, CYFB, DJJA)
    • Ignition/Glow Plug System [CZPB, CZRA, DBFB] -- (A3)
    • Ignition/Glow Plug System 2.0L (CZRA)
    • Ignition/Glow Plug System Servicing 2.0L (CZRA)
  • Remove, Overhaul & Install
    • General Information (Maintenance Procedures) -- (A3)
    • General, Technical Data (0GC) -- (A3)
    • General, Technical Data (Body Interior) -- (A3 Cabriolet)
    • General, Technical Data (HVAC) -- (A3 Cabriolet / Sedan)
    • General, Technical Data (Oil Gauge Tester) -- (A3)
    • General, Technical Data (Suspension) -- (A3 Cabriolet / Sedan)
    • General, Technical Data [CZPB, CZRA, DBFB] -- (A3)
    • General, Technical Data [CZPB, CZRA] -- (A3)
    • General, Technical Data 2.0L (CNSB, CNTC, CYFB, DJJA)
    • General, Technical Data 2.0L (CZRA)
    • General, Technical Data 2.0L Diesel (CRUA, DEJA)
    • General, Technical Data Electrical -- (A3 Cabriolet / Sedan)
    • General, Technical Data Refrigerant R1234YF Servicing -- (A3)
    • General, Technical Data Servicing 2.0L (CZRA)
  • Specifications
    • Firing Order & Cylinder Identification
  • System
    • Generic Scan Tool 1.8L & 2.0L (CNTA,CNTC,CNSB)
    • Generic Scan Tool 1.8L & 2.0L (CNTC, CNSB) - Engine DTC Tables (Engine Control Module --, 2017 My)
    • Generic Scan Tool 1.8L & 2.0L (CNTC, CNSB) (Diagnostic Procedures)
    • Generic Scan Tool 1.8L & 2.0L (CNTC, CNSB) (Engine & Transmission DTC Tables)
    • Generic Scan Tool 1.8L & 2.0L (CNTC, CNSB) (Engine DTC Table)
    • Generic Scan Tool 2.0L (CNTC) - Engine DTC Tables
    • Generic Scan Tool 2.0L (CNTC) - Transmission DTC Tables & Diagnostic Procedures
    • Generic Scan Tool 2.0L (CNTC) (Engine DTC Tables)
    • Generic Scan Tool 2.0L (CNTC) (General Information)
  • Testing & Diagnosis
    • Generic Scan Tool 1.8L & 2.0L (CNTA,CNTC,CNSB)
    • Generic Scan Tool 1.8L & 2.0L (CNTC, CNSB) - Engine DTC Tables (Engine Control Module --, 2017 My)
    • Generic Scan Tool 1.8L & 2.0L (CNTC, CNSB) (Diagnostic Procedures)
    • Generic Scan Tool 1.8L & 2.0L (CNTC, CNSB) (Engine & Transmission DTC Tables)
    • Generic Scan Tool 1.8L & 2.0L (CNTC, CNSB) (Engine DTC Table)
    • Generic Scan Tool 2.0L (CNTC) - Engine DTC Tables
    • Generic Scan Tool 2.0L (CNTC) - Transmission DTC Tables & Diagnostic Procedures
    • Generic Scan Tool 2.0L (CNTC) (Engine DTC Tables)
    • Generic Scan Tool 2.0L (CNTC) (General Information)
  • Tune-Up
    • General Information (Maintenance Procedures) -- (A3)
    • General, Technical Data (0GC) -- (A3)
    • General, Technical Data (Body Interior) -- (A3 Cabriolet)
    • General, Technical Data (HVAC) -- (A3 Cabriolet / Sedan)
    • General, Technical Data (Oil Gauge Tester) -- (A3)
    • General, Technical Data (Suspension) -- (A3 Cabriolet / Sedan)
    • General, Technical Data [CZPB, CZRA, DBFB] -- (A3)
    • General, Technical Data [CZPB, CZRA] -- (A3)
    • General, Technical Data 2.0L (CNSB, CNTC, CYFB, DJJA)
    • General, Technical Data 2.0L (CZRA)
    • General, Technical Data 2.0L Diesel (CRUA, DEJA)
    • General, Technical Data Electrical -- (A3 Cabriolet / Sedan)
    • General, Technical Data Refrigerant R1234YF Servicing -- (A3)
    • General, Technical Data Servicing 2.0L (CZRA)
    • Ignition System Servicing 2.0L (CNSB, CNTC, CYFB, DJJA)
    • Ignition/Glow Plug System [CZPB, CZRA, DBFB] -- (A3)
    • Ignition/Glow Plug System 2.0L (CZRA)
    • Ignition/Glow Plug System Servicing 2.0L (CZRA)
• 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
  • DTC Index
    • DTC Index (A3 Cabriolet)
    • DTC Index 1.8L
    • DTC Index 1.8L & 2.0L (CNTC, CNSB)
    • DTC Index 2.0L (CNTC)
    • DTC Index 2.0L (CYFB)
    • DTC Index 2.0L Diesel (CRUA, DEJA)
  • 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
    • General Information
  • Metric Conversions
    • Engine Displacement Conversion Table - ECAT
    • Metric Conversions
  • OEM General Information
    • Automatic Stop/Start Disable
    • General Information
    • Wires -- A3 (Convertible)
  • Reset Procedures
    • General Information
    • Maintenance Reminder Light (Reset Procedures)
    • Tire Pressure Monitor Systems
  • Specifications Index
    • Common Specifications & Procedures (Cabriolet)
  • Steering
    • Map - Steering, Suspension, Wheel Alignment, Wheels & Tires
    • Wheel Alignment Theory & Operation - General Information
  • Towing
    • General Information
    • Wheels, Tires And Wheel Alignment (Towing Guide) -- (A3)
  • Traction Control Disable Procedures
  • Trouble Shooting - Manual Transmission - General Information
• Heating, Ventilation & A/C (HVAC)
  • General Servicing
    • General, Technical Data Heating, Ventilation And Air Conditioning
    • General, Technical Data Refrigerant R1234YF Servicing
  • HVAC Control Systems
    • Air Conditioning (Front Heater & A/C Unit)
    • Air Conditioning (Front Heater & A/C Unit) -- (Cabriolet)
    • Air Conditioning (Overview)
    • Air Conditioning (Overview) -- ( Cabriolet)
    • Air Conditioning Refrigerant R1234YF Servicing (A/C Service Station) -- (Cabriolet)
    • Air Conditioning Refrigerant R1234YF Servicing (Refrigerant Circuit)
    • Air Conditioning Refrigerant R1234YF Servicing (Refrigerant Circuit) -- (Cabriolet)
    • Air Conditioning Refrigerant R1234YF Servicing (Tools & Testing Equipment)
    • Air Conditioning Refrigerant R1234YF Servicing (Tools & Testing Equipment) -- (Cabriolet / Sedan)
    • Air Conditioning Refrigerant R134A Servicing (Capacities) -- (Cabriolet)
    • Air Conditioning Refrigerant R134A Servicing (General Information)
    • Air Conditioning Refrigerant R134A Servicing (General Information) -- (Cabriolet)
    • Air Conditioning Refrigerant R134A Servicing (Pressures, Checking) -- (Cabriolet)
    • Air Conditioning Refrigerant R134A Servicing (Refrigerant Circuit Components)
    • Air Conditioning Refrigerant R134A Servicing (Refrigerant Circuit Components) -- (Cabriolet)
    • Air Conditioning Refrigerant R134A Servicing (Refrigerant Circuit)
    • Air Conditioning Refrigerant R134A Servicing (Refrigerant Circuit) -- (Cabriolet)
    • General, Technical Data Heating, Ventilation And Air Conditioning
    • General, Technical Data Refrigerant R1234YF Servicing
    • Heating, Ventilation
    • Heating, Ventilation -- (Cabriolet)
• Maintenance
  • Procedures
    • 2015 AUDI Service
    • 2016 AUDI Service
    • 2017 AUDI Service
    • 2020 AUDI Service
    • General Information
    • Genuine Oils For Warranty
    • MAINTENANCE FLUID CAPACITY TABLES, DIAGNOSIS (1 Of 2) -- (A3)
    • MAINTENANCE FLUID CAPACITY TABLES, DIAGNOSIS (2 Of 2) -- (A3)
    • Maintenance Reminder Light (Reset Procedures)
    • Maintenance Schedule, Diagnosis (2017)
    • Maintenance, Diagnosis 2020 Fluid Capacity Tables
    • MAINTENANCE, DIAGNOSIS FLUID CAPACITY (1 Of 2) -- (A3 CABRIOLET / SEDAN)
    • MAINTENANCE, DIAGNOSIS FLUID CAPACITY (2 Of 2) -- (A3 CABRIOLET / SEDAN)
  • Schedule
    • General Information
• Restraints
  • Air Bag, SRS
    • General, Technical Data Body Interior
    • Passenger Protection, Airbags, Seat Belts
    • Passenger Protection, Airbags, Seat Belts -- (Cabriolet)
  • Passive Restraints
    • General, Technical Data Body Interior
    • Interior Equipment
    • Passenger Protection, Airbags, Seat Belts
    • Passenger Protection, Airbags, Seat Belts -- (Cabriolet)
• Steering
  • Manual Steering
    • Steering
    • Steering (Cabriolet)
  • Power Steering
    • Steering
    • Steering (Cabriolet)
  • Steering Column
    • General, Technical Data Suspension, Wheels, Steering
    • Steering
    • Steering (Cabriolet)
  • Steering Gear
    • Steering
    • Steering (Cabriolet)
  • Steering Linkage
    • Steering
    • Steering (Cabriolet)
• Suspension
  • Electronic Suspension
    • Self-Leveling Suspension
    • Self-Leveling Suspension -- (A3 Cabriolet / Sedan)
  • Front Suspension
    • Front Suspension
    • Front Suspension -- (A3 Cabriolet / Sedan)
    • General, Technical Data Suspension, Wheels, Steering
  • Rear Suspension
    • General, Technical Data Suspension, Wheels, Steering
    • Rear Suspension
    • Rear Suspension -- (A3 Cabriolet / Sedan)
  • Wheel Alignment
    • AUDI Wheel Alignment Specifications - A3
    • General, Technical Data Suspension, Wheels, Steering
    • Wheels, Tires And Wheel Alignment
    • Wheels, Tires, Wheel Alignment (Suspension, Wheels, Steering)
    • Wheels, Tires, Wheel Alignment (Suspension, Wheels, Steering) -- (A3)
    • Wheels, Tires, Wheel Alignment (Wheel And Tire Guide General Information)
    • Wheels, Tires, Wheel Alignment (Wheel And Tire Guide)
    • Wheels, Tires, Wheel Alignment (Wheel And Tire Guide) (Wheel Tire Combinations)
  • Wheels & Tire System
    • Exterior Equipment (A3 Convertible)
    • General, Technical Data Suspension, Wheels, Steering
    • Wheels, Tires And Wheel Alignment
    • Wheels, Tires, Wheel Alignment (Suspension, Wheels, Steering)
    • Wheels, Tires, Wheel Alignment (Suspension, Wheels, Steering) -- (A3)
    • Wheels, Tires, Wheel Alignment (Wheel And Tire General Information) -- (A3)
    • Wheels, Tires, Wheel Alignment (Wheel And Tire Guide General Information)
    • Wheels, Tires, Wheel Alignment (Wheel And Tire Guide)
    • Wheels, Tires, Wheel Alignment (Wheel And Tire Guide) (Air Pressures) -- (A3) (Convertible)
    • Wheels, Tires, Wheel Alignment (Wheel And Tire Guide) (General Information) -- (A3) (Convertible)
    • Wheels, Tires, Wheel Alignment (Wheel And Tire Guide) (Wheel Tire Combinations)
• Transmission
  • Automatic Trans
    • Gears, Shafts 6-Speed Dual Clutch Transmission
    • Gears, Shafts 7-Speed Dual Clutch Transmission 0DL
    • Gears, Shafts 7-Speed Dual Clutch Transmission 0GC
    • General, Technical Data 6-Speed Dual Clutch Transmission 0D9 (2 Of 2)
    • General, Technical Data 6-Speed Dual-Clutch Transmission 0D9 (1 Of 2)
    • General, Technical Data 7-Speed Dual Clutch Transmission 0DL
    • General, Technical Data 7-Speed Dual Clutch Transmission 0GC
    • General, Technical Data Rear Final Drive
  • Clutch
    • Clutch (0GC) -- (A3)
    • Clutch 7-Speed Dual Clutch Transmission 0GC
  • Manual Trans
    • Final Drive, Differential (0GC) -- (A3)
    • Final Drive, Differential Rear Final Drive
    • Gears, Shafts 6-Speed Dual Clutch Transmission
    • Gears, Shafts 7-Speed Dual Clutch Transmission 0DL
    • Gears, Shafts 7-Speed Dual Clutch Transmission 0GC
  • Transmission Control Systems
    • Controls, Housing (0GC) -- (A3)
    • Controls, Housing 7-Speed Dual Clutch Transmission 0GC
    • Final Drive, Differential 7-Speed Dual Clutch Transmission 0GC
    • General, Technical Data 6-Speed Dual Clutch Transmission 0D9 (2 Of 2)
    • Generic Scan Tool 1.8L & 2.0L (CNTA,CNTC,CNSB)
    • Generic Scan Tool 1.8L & 2.0L (CNTC, CNSB) - Engine DTC Tables (Engine Control Module --, 2017 My)
    • Generic Scan Tool 1.8L & 2.0L (CNTC, CNSB) (Diagnostic Procedures)
    • Generic Scan Tool 1.8L & 2.0L (CNTC, CNSB) (Engine & Transmission DTC Tables)
    • Generic Scan Tool 1.8L & 2.0L (CNTC, CNSB) (Engine DTC Table)
    • Generic Scan Tool 2.0L (CNTC) - Engine DTC Tables
    • Generic Scan Tool 2.0L (CNTC) - Transmission DTC Tables & Diagnostic Procedures
    • Generic Scan Tool 2.0L (CNTC) (Engine DTC Tables)
    • Generic Scan Tool 2.0L (CNTC) (General Information)
• External Pages