Audi A4 B9 facelift (2019-2024) light switch Wiring diagrams

BLK/VIO WIRE BLU WIRE BOTTOM COUPLING POINT ON LEFT A-PILLAR CONTROL UNIT 1 FOR DRIVING, CONVENIENCE FUNCTIONS COUPLING POINT ON ROOF CUPHOLDER AMBIENT LIGHTING LAMP CUPHOLDER AMBIENT LIGHTING LAMP 2 DRIVER DOOR CONTROL MODULE ELECTRONIC STEERING COLUMN LOCK CONTROL MODULE GRN WIRE GRN/GRY WIRE GRN/VIO WIRE GRY WIRE GRY/VIO WIRE GRY/YEL WIRE LEFT DOOR STORAGE COMPARTMENT ILLUMINATION LAMP LEFT FRONT DOOR AMBIENT LIGHTING BULB 1 LEFT FRONT DOOR CONTOUR ILLUMINATION LAMP LEFT FRONT DOOR COUPLING POINT LEFT FRONT FOOTWELL LAMP LEFT FRONT SEAT COUPLING STATION LIGHT SWITCH MEMORY SEAT/ STEERING COLUMN ADJUSTMENT CONTROL MODULE ORG/ WIRE ORG/BRN WIRE ORG/GRN WIRE RAIN/LIGHT RECOGNITION SENSOR RED/BLU WIRE RIGHT FRONT FOOTWELL LAMP RIGHT FRONT SEAT COUPLING STATION STEERING COLUMN) SUNROOF CONTROL MODULE VEHICLE ELECTRICAL SYSTEM CONTROL MODULE (UNDER LEFT END OF DASH) VIO WIRE VIO/RED WIRE VIO/WHT WIRE VIO/YEL WIRE W/ AUXILIARY LAMPS W/ PANORAMA SUNROOF WHT WIRE WIPER MOTOR CONTROL MODULE YEL WIRE

BLK/BLU WIRE BLK/GRN WIRE BRN WIRE COMPUTER DATA LINES SYSTEM FOG LAMP BUTTON FOG LAMP INDICATOR LAMP FUSE 11 FUSE 12 FUSE PANEL C GRN WIRE GRY WIRE GRY/RED WIRE HEADLAMP SWITCH ILLUMINATION BULB HOT AT ALL TIMES INSTRUMENT PANEL, SWITCH ILLUMINATION DIMMER SWITCH LIGHT SWITCH ORG/BRN WIRE PNK WIRE POSITION LAMP INDICATOR LAMP POWER DISTRIBUTION SYSTEM REAR FOG LAMP BUTTON REAR FOG LAMP INDICATOR LAMP RED/VIO WIRE RED/YEL WIRE RIGHT DAYTIME RUNNING LAMP, POSITION LAMP LED MODULE RIGHT FRONT HEADLAMP RIGHT FRONT TURN SIGNAL BULB RIGHT HEADLAMP AUXILIARY FUNCTIONS POWER OUTPUT MODULE RIGHT LED HEADLAMP POWER OUTPUT MODULE 1 RIGHT LIGHT CONTROL MODULE RIGHT MATRIX HEADLAMP POWER OUTPUT MODULE RIGHT STATIONARY CORNERING LAMP STEERING COLUMN ELECTRONICS CONTROL MODULE STEERING COLUMN) TURN SIGNAL SWITCH VIO/BLU WIRE VIO/WHT WIRE W/O HID W/ MATRIX BEAM W/O HID, MATRIX BEAM WHT WIRE WINDSHIELD PROJECTION HEAD-UP DISPLAY BUTTON YEL WIRE YEL/RED WIRE YEL/VIO WIRE

BLK WIRE BRN WIRE BRN/WHT WIRE COUPLING POINT IN LEFT REAR SEAT COUPLING POINT IN THE LEFT REAR DOOR COUPLING STATION IN LEFT FRONT SEAT DATA BUS ON BOARD DIAGNOSTIC INTERFACE DRIVER MULTI- CONTOUR COLUMN SEAT CONTROL MODULE DRIVER SEAT ADJUSTMENT CONTROL HEAD DRIVER SEAT BACKREST COUPLING POINT DRIVER SEAT SWITCH MODULE DRIVER SIDE MASSAGE FUNCTION BUTTON DRIVER SIDE REAR DOOR CONTROL MODULE DRIVER SIDE REAR DOOR LOCK UNIT DRIVER SIDE REAR EXTERIOR DOOR HANDLE ILLUMINATION LAMP DRIVER VOLUME CONTROL EARLY PRODUCTION ELECTRONIC STEERING COLUMN LOCK CONTROL MODULE EMERGENCY CALL MODULE, COMMUNICATION UNIT CONTROL MODULE FRONT A/C DISPLAY CONTROL HEAD FRONT INFORMATION DISPLAY CONTROL HEAD INSTRUMENT CLUSTER CONTROL MODULE INSTRUMENT CLUSTER OPERATION BUTTON LATE PRODUCTION LEFT FRONT FOOTWELL LAMP LEFT FRONT SEAT BELT LEFT FRONT SEAT COUPLING STATION LEFT FRONT SEAT EXTENSION HEATING ELEMENT LEFT FRONT SEAT HEATED BACKREST LEFT FRONT SEAT HEATING ELEMENT LEFT FRONT SEAT TEMPERATURE SENSOR LEFT INSTRUMENT PANEL VENT ILLUMINATION BULB LEFT LUGGAGE COMPARTMENT LAMP LEFT REAR BACKREST HEATING ELEMENT LEFT REAR BENCH SEAT HEATING ELEMENT, LEFT REAR HEATED SEAT TEMPERATURE SENSOR LEFT REAR DOOR AMBIENT LIGHTING BULB 1 LEFT REAR DOOR CONTOUR ILLUMINATION LAMP LEFT REAR DOOR COUPLING POINT LEFT REAR DOOR STORAGE COMPARTMENT ILLUMINATION LAMP LEFT REAR EXTERIOR DOOR HANDLE TOUCH SENSOR LEFT REAR FOOTWELL LAMP LEFT REAR INFORMATION DISPLAY CONTROL HEAD CONTROL MODULE LEFT REAR SEAT COUPLING STATION LIGHT SWITCH MEMORY SEAT/STEERING COLUMN ADJUSTMENT CONTROL MODULE MOBILE DEVICE CHARGER 1 NCA WIRE NEAR FIELD COMMUNICATION CONTROL MODULE 2 REAR A/C DISPLAY CONTROL HEAD REAR VIEW CAMERA SYSTEM CONTROL MODULE SHIELD RIGHT SEAT BOLSTER HEATING FOR LEFT FRONT SEAT STEERING COLUMN ELECTRONICS CONTROL MODULE USB CHARGING SOCKET 2 USB DISTRIBUTOR W/ AUXILIARY LAMPS W/ FPK ACTIVE INFO DISPLAY W/ SEAT DEPTH ADJUSTMENT W/O FPK ACTIVE INFO DISPLAY WAGON WINDSHIELD PROJECTION HEAD UP DISPLAY CONTROL MODULE

AUTOMATIC DIMMING INTERIOR REAR VIEW MIRROR AUTOMATIC HIGH BEAM ASSIST CONTROL MODULE BLK/BLU WIRE BLK/GRN WIRE BLK/RED WIRE BLU/GRN WIRE BRN WIRE COMPUTER DATA LINES SYSTEM CURRENT CODING RESISTANCE 1 FOR LEFT HEADLAMP FOG LAMP BUTTON FOG LAMP INDICATOR LAMP FUSE 11 FUSE 12 FUSE 3 FUSE 9 FUSE PANEL 2 FUSE PANEL 3 FUSE PANEL B FUSE PANEL C GRN WIRE GRY WIRE GRY/RED WIRE HEADLAMP SWITCH ILLUMINATION BULB HOT AT ALL TIMES HUMIDITY SENSOR INSTRUMENT CLUSTER CONTROL MODULE INSTRUMENT PANEL, SWITCH ILLUMINATION DIMMER SWITCH LEFT DAYTIME RUNNING LAMP, POSITION LAMP LED MODULE LEFT FRONT FOG LAMP BULB LEFT FRONT HEADLAMP LEFT FRONT SIDE MARKER LAMP BULB LEFT FRONT TURN SIGNAL BULB LEFT HEADLAMP TEMPERATURE SENSOR 1 LEFT HID HEADLAMP BULB LEFT LIGHT CONTROL MODULE LEFT LOW BEAM HEADLAMP REFLECTOR MOTOR LIGHT SWITCH ORG/BRN WIRE PARKING BRAKE INDICATOR LAMP POSITION LAMP INDICATOR LAMP POWER DISTRIBUTION SYSTEM RAIN/LIGHT RECOGNITION SENSOR RED WIRE RED/GRN WIRE RED/WHT WIRE RELAY & FUSE CARRIER 1 VEHICLE ELECTRICAL SYSTEM CONTROL MODULE VIO WIRE VIO/BLU WIRE VIO/GRN WIRE VIO/GRY WIRE VIO/WHT WIRE W/ FPK ACTIVE INFO DISPLAY W/O FPK ACTIVE INFO DISPLAY WHT WIRE WHT/BLK WIRE WINDSHIELD PROJECTION HEAD-UP DISPLAY BUTTON YEL WIRE YEL/BLK WIRE YEL/VIO WIRE

AUTOMATIC DIMMING INTERIOR REAR VIEW MIRROR AUTOMATIC HIGH BEAM ASSIST CONTROL MODULE BLK/BLU WIRE BLK/GRN WIRE BLK/RED WIRE BRN WIRE COMPUTER DATA LINES SYSTEM FOG LAMP BUTTON FOG LAMP INDICATOR LAMP FUSE 11 FUSE 12 FUSE 3 FUSE 5 FUSE 9 FUSE PANEL 2 FUSE PANEL 3 FUSE PANEL 5 FUSE PANEL B FUSE PANEL C GRN WIRE GRY WIRE GRY/RED WIRE HEADLAMP SWITCH ILLUMINATION BULB HOT AT ALL TIMES HUMIDITY SENSOR INSTRUMENT CLUSTER CONTROL MODULE INSTRUMENT PANEL, SWITCH ILLUMINATION DIMMER SWITCH LEFT FRONT HEADLAMP LEFT FRONT TURN SIGNAL BULB LEFT LED HEADLAMP POWER OUTPUT MODULE 1 LIGHT SWITCH ORG/BRN WIRE PARKING BRAKE INDICATOR LAMP POSITION LAMP INDICATOR LAMP POWER DISTRIBUTION SYSTEM RAIN/LIGHT RECOGNITION SENSOR REAR FOG LAMP BUTTON REAR FOG LAMP INDICATOR LAMP RED WIRE RED/BLK WIRE RED/GRN WIRE RED/VIO WIRE RED/WHT WIRE RELAY & FUSE CARRIER 1 VEHICLE ELECTRICAL SYSTEM CONTROL MODULE VIO WIRE VIO/GRY WIRE VIO/WHT WIRE W/ FPK ACTIVE INFO DISPLAY W/ LENS W/O FPK ACTIVE INFO DISPLAY W/O LENS WINDSHIELD PROJECTION HEAD-UP DISPLAY BUTTON YEL WIRE YEL/BLK WIRE YEL/RED WIRE

AUTOMATIC DIMMING INTERIOR REAR VIEW MIRROR AUTOMATIC HIGH BEAM ASSIST CONTROL MODULE BLK/BLU WIRE BRN WIRE COMPUTER DATA LINES SYSTEM FOG LAMP BUTTON FOG LAMP INDICATOR LAMP FUSE 11 FUSE 12 FUSE 13 FUSE 3 FUSE 9 FUSE PANEL 2 FUSE PANEL 3 FUSE PANEL 4 FUSE PANEL B FUSE PANEL C GRN WIRE GRY WIRE GRY/RED WIRE HEADLAMP SWITCH ILLUMINATION BULB HOT AT ALL TIMES HOT W/ TERMINAL 15 POWER SUPPLY RELAY ENERGIZED HUMIDITY SENSOR INSTRUMENT CLUSTER CONTROL MODULE INSTRUMENT PANEL, SWITCH ILLUMINATION DIMMER SWITCH LEFT DAYTIME RUNNING LAMP, POSITION LAMP LED MODULE LEFT FRONT HEADLAMP LEFT FRONT TURN SIGNAL BULB LEFT HEADLAMP AUXILIARY FUNCTIONS POWER OUTPUT MODULE LEFT HEADLAMP BEAM ADJUSTMENT MOTOR LEFT HEADLAMP CURRENT CODING RESISTANCE 1 LEFT HEADLAMP CURRENT CODING RESISTANCE 2 LEFT HEADLAMP CURRENT CODING RESISTANCE 3 LEFT HEADLAMP CURRENT CODING RESISTANCE 4 LEFT HEADLAMP FAN LEFT HEADLAMP TEMPERATURE SENSOR 1 LEFT HEADLAMP TEMPERATURE SENSOR 2 LEFT HEADLAMP TEMPERATURE SENSOR 3 LEFT HEADLAMP TEMPERATURE SENSOR 4 LEFT HEADLAMP TEMPERATURE SENSOR 5 LEFT HIGH BEAM HEADLAMP BULB LEFT LED HEADLAMP POWER OUTPUT MODULE 1 LEFT LIGHT CONTROL MODULE LEFT LOW BEAM HEADLAMP BULB LEFT MATRIX HEADLAMP POWER OUTPUT MODULE LEFT STATIONARY CORNERING LAMP LIGHT SWITCH ORG/ WIRE ORG/BRN WIRE ORG/GRN WIRE PARKING BRAKE INDICATOR LAMP POSITION LAMP INDICATOR LAMP POWER DISTRIBUTION SYSTEM RAIN/LIGHT RECOGNITION SENSOR RED WIRE RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE RELAY & FUSE CARRIER 1 VEHICLE ELECTRICAL SYSTEM CONTROL MODULE VIO WIRE VIO/WHT WIRE W/ FPK ACTIVE INFO DISPLAY W/O FPK ACTIVE INFO DISPLAY WHT WIRE WHT/BLK WIRE WINDSHIELD PROJECTION HEAD-UP DISPLAY BUTTON YEL WIRE YEL/BLK WIRE YEL/RED WIRE

BLU WIRE BLU/VIO WIRE BRAKE FLUID LEVEL WARNING SWITCH BRN WIRE BRN/BLU WIRE COMFORT SYSTEM CENTRAL CONTROL MODULE COMPUTER DATA LINES SYSTEM ENGINE COOLANT LEVEL SENSOR FUEL DELIVERY UNIT FUEL LEVEL SENSOR FUEL LEVEL SENSOR 2 GRN WIRE GRY WIRE GRY/BLU WIRE GRY/RED WIRE INSTRUMENT CLUSTER OPERATION BUTTON LIGHT SWITCH ORG/BRN WIRE OUTSIDE AIR TEMPERATURE SENSOR VEHICLE ELECTRICAL SYSTEM CONTROL MODULE VIO WIRE VIO/WHT WIRE WHT WIRE WHT/YEL WIRE WINDSHIELD PROJECTION HEAD-UP DISPLAY BUTTON WINDSHIELD WASHER FLUID LEVEL SENSOR YEL WIRE

BLU WIRE BLU/VIO WIRE BRAKE FLUID LEVEL WARNING SWITCH BRN WIRE BRN/BLU WIRE COMFORT SYSTEM CENTRAL CONTROL MODULE COMPUTER DATA LINES SYSTEM ENGINE COOLANT LEVEL SENSOR FUEL DELIVERY UNIT FUEL LEVEL SENSOR FUEL LEVEL SENSOR 2 GRN WIRE GRY WIRE GRY/BLU WIRE GRY/RED WIRE INSTRUMENT CLUSTER OPERATION BUTTON LIGHT SWITCH ORG/BRN WIRE OUTSIDE AIR TEMPERATURE SENSOR VEHICLE ELECTRICAL SYSTEM CONTROL MODULE VIO WIRE VIO/WHT WIRE WHT WIRE WHT/YEL WIRE WINDSHIELD PROJECTION HEAD-UP DISPLAY BUTTON WINDSHIELD WASHER FLUID LEVEL SENSOR YEL WIRE

BLU/BRN WIRE BRN WIRE BRN/GRN WIRE COMPUTER DATA LINES SYSTEM FRONT PASSENGER DOOR CONTROL MODULE (FRONT PASSENGER DOOR) FRONT PASSENGER INTERIOR LOCKING BUTTON FRONT PASSENGER POWER WINDOW BUTTON FRONT PASSENGER SEAT MEMORY SETTINGS CONTROL HEAD FUSE 11 FUSE 14 FUSE 5 FUSE PANEL 2 FUSE PANEL 3 FUSE PANEL B FUSE PANEL C GRY/RED WIRE HEADLAMP SWITCH ILLUMINATION BULB HOT AT ALL TIMES INSTRUMENT PANEL, SWITCH ILLUMINATION DIMMER SWITCH LEFT FRONT DOOR COUPLING POINT LIGHT SWITCH ORG/BRN WIRE ORG/GRN WIRE PASSENGER SIDE INTERIOR DOOR HANDLE ILLUMINATION LAMP POWER DISTRIBUTION SYSTEM RED/BLU WIRE RED/VIO WIRE RED/WHT WIRE RED/YEL WIRE RELAY & FUSE CARRIER 1 RIGHT FRONT DOOR COUPLING POINT RIGHT FRONT EXTERIOR DOOR HANDLE ILLUMINATION BULB VIO/BLU WIRE VIO/WHT WIRE WINDSHIELD PROJECTION HEAD-UP DISPLAY BUTTON YEL WIRE

2.0L TURBO 3.0L TURBO AIR BAG CONTROL MODULE BATTERY BATTERY INTERRUPT IGNITER BATTERY JUMP START TERMINAL BATTERY MONITORING CONTROL MODULE BLK WIRE BLU WIRE BRN WIRE CENTER REAR OF LUGGAGE COMPT) COMPUTER DATA LINES SYSTEM DRIVER VOLUME CONTROL DRIVING, CONVENIENCE FUNCTIONS CONTROL UNIT 1 ELECTRONIC STEERING COLUMN LOCK CONTROL MODULE FROM BOTTOM COUPLING POINT ON LEFT A-PILLAR (DIAGRAM 4 OF 6) FRONT A/C DISPLAY CONTROL HEAD FRONT INFORMATION DISPLAY CONTROL HEAD FUSE 1 FUSE 10 FUSE 11 FUSE 12 FUSE 13 FUSE 14 FUSE 15 FUSE 16 FUSE 2 FUSE 3 FUSE 4 FUSE 5 FUSE 6 FUSE 7 FUSE 8 FUSE 9 FUSE PANEL A GENERATOR, VOLTAGE REGULATOR GRY/RED WIRE INFORMATION ELECTRONICS CONTROL MODULE 1 INSTRUMENT CLUSTER CONTROL MODULE LIGHT SWITCH MAIN FUSE CARRIER MOBILE DEVICE CHARGER 1 N/A POWER STEERING CONTROL MODULE RADIATOR FAN RADIATOR FAN FUSE RED WIRE RED/BLK WIRE RED/BRN WIRE RED/GRN WIRE RED/GRY WIRE RED/VIO WIRE RED/WHT WIRE RED/YEL WIRE RIGHT COUPLING POINT IN ENGINE/MOTOR COMPARTMENT STARTER STEERING COLUMN ELECTRONICS CONTROL MODULE SUPPRESSOR TELEPHONE BASEPLATE TO FUSE PANEL A (DIAGRAM 5 OF 6) TO RELAY & FUSE CARRIER 1 (DIAGRAM 2 OF 6) TO RELAY & FUSE CARRIER 2 (DIAGRAM 4 OF 6) TO RELAY & FUSE CARRIER 2 (DIAGRAM 5 OF 6) TO RELAY & FUSE CARRIER 2 (DIAGRAM 6 OF 6) TO RELAY & FUSE CARRIER 5 (DIAGRAM 4 OF 6) USB DISTRIBUTOR VIO/WHT WIRE W/ FPK ACTIVE INFO DISPLAY W/ MULTI-FUNCTION STEERING WHEEL W/O FPK ACTIVE INFO DISPLAY W/O TRAILER HITCH WAGON WINDSHIELD PROJECTION HEAD UP DISPLAY CONTROL MODULE