Audi A4 B8 (2007-2012) (left side of center tunnel) Wiring diagrams

2.0L 3.0L ABS WARNING LAMP ACTIVE STEERING CONTROL MODULE (UNDER DRIVER'S SEAT) ASR/ESP CONTROL LAMP BLK WIRE BLK/VIO WIRE BLK/YEL WIRE BRAKE LIGHT SWITCH BRN WIRE COMFORT SYSTEM CENTRAL CONTROL MODULE (RIGHT SIDE OF TRUNK) COMPUTER DATA LINES SYSTEM DISCONTINUED PHASED IN MODIFICATION ESP SENSOR UNIT ESP SENSOR UNIT 2 (W/ DYNAMIC STEERING W/ GEARBOX QUATTRO SPORT) FUSE FUSE CARRIER FUSE CARRIER FUSE FUSE FUSE HOT AT ALL TIMES HOT W/ POWER SUPPLY RELAY (TERMINAL 15) ENERGIZED INSTRUMENT CLUSTER CONTROL MODULE NCA WIRE ORG/BLU WIRE ORG/BRN WIRE ORG/GRN WIRE ORG/WHT WIRE PASSENGER'S SIDE FUSE PANEL (BEHIND RIGHT END OF DASH) RED/BLK WIRE RED/BRN WIRE RED/WHT WIRE STEERING ANGLE SENSOR (BEHIND STEERING WHEEL)

A/T ACCESS/START AUTHORIZATION ALARM SYSTEM OFF SWITCH AVANT BLK WIRE BLK/RED WIRE BLK/YEL WIRE BLU WIRE BLU/BRN WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE COMPUTER DATA LINES SYSTEM DRIVER'S DOOR CONTROL MODULE (IN DRIVER'S FRONT DOOR) ELECTRONIC STEERING COLUMN LOCK CONTROL MODULE (NEAR STEERING COLUMN) FRONT HOOD SWITCH GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GRN/RED WIRE GRN/YEL WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/YEL WIRE HEADLIGHTS SYSTEM HORNS SYSTEM LEFT REAR OUTSIDE DOOR CONTROL MODULE ORG/BRN WIRE ORG/GRN WIRE RED/GRY WIRE RED/VIO WIRE RED/YEL WIRE RIGHT REAR OUTSIDE DOOR HANDLE TOUCH SENSOR SEDAN SWITCH TRUNK LID ALARM SWITCH/REAR LID CENTRAL LOCKING SYSTEM MOTOR VEHICLE ELECTRICAL SYSTEM CONTROL MODULE (UNDER LEFT SIDE OF DASH) VIO/BLU WIRE

3.0L A/C COMPRESSOR REGULATOR VALVE A/C PRESSURE/ TEMPERATURE SENSOR (LEFT SIDE OF CONDENSER) AIR FLOW DOOR MOTOR (LEFT SIDE OF AIR INTAKE HOUSING) BLU/BLK WIRE BLU/BRN WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRAKE LIGHT SWITCH BRN WIRE BRN/BLK WIRE BRN/YEL WIRE CENTER OUTLET TEMPERATURE SENSOR CENTER VENT ADJUSTMENT MOTOR CLIMATRONIC CONTROL MODULE COMPUTER DATA LINES SYSTEM COOLANT PUMP (IF EQUIPPED) DEFROSTER DOOR MOTOR (LEFT SIDE OF A/C UNIT) DRIVER'S SIDE FUSE PANEL ENGINE COOLANT LEVEL (ECL) SENSOR EVAPORATOR VENT TEMPERATURE SENSOR (IN EVAPORATOR HOUSING) FOOTWELL FLAP MOTOR FOOTWELL OUTLET TEMPERATURE SENSOR FUSE FUSE CARRIER 1 FUSE CARRIER 2 GRN/BRN WIRE GRN/VIO WIRE GRN/WHT WIRE GRY WIRE GRY/BLK WIRE GRY/RED WIRE HOT AT ALL TIMES HOT W/ POWER SUPPLY RELAY (TERMINAL 15) ENERGIZED ORG/BRN WIRE ORG/GRN WIRE OUTSIDE AIR TEMPERATURE SENSOR (BEHIND FRONT GRILLE) PASSENGER'S SIDE FUSE PANEL (BEHIND RIGHT END OF DASH) RECIRCULATION DOOR MOTOR (LEFT SIDE OF AIR INTAKE HOUSING) RED WIRE RED/BLU WIRE RED/YEL WIRE SUNLIGHT PHOTO SENSOR (UNDER CENTER OF DASH) TEMPERATURE REGULATOR FLAP MOTOR VEHICLE ELECTRICAL SYSTEM CONTROL MODULE (UNDER LEFT SIDE OF DASH) VIO WIRE VIO/RED WIRE WHT WIRE WHT/BLK WIRE WHT/GRN WIRE WHT/RED WIRE WHT/VIO WIRE WHT/YEL WIRE

3.0L BATTERY JUMP BLK/BLU WIRE BRN WIRE BRN/BLK WIRE CLIMATRONIC REFRIGERANT SHUT-OFF VALVE (ON REFRIGERANT TUBE) COMPUTER DATA LINES SYSTEM COOLANT FAN COOLANT FAN 2 COOLANT FAN CONTROL (FC) CONTROL MODULE (3.0L) (ON COOLANT FAN MOTORS) COOLANT FAN CONTROL (FC) CONTROL MODULE 2 (3.0L) (ON COOLANT FAN MOTORS) E-BOX RELAY/ FUSE CARRIER (IN PLENUM CHAMBER ELECTRONICS BOX) ENGINE CONTROL MODULE (ECM) (2.0L: LEFT SIDE OF ENGINE COMPT PLENUM CHAMBER) ENGINE COOLANT TEMPERATURE (ECT) SENSOR (2.0L: LOWER LEFT REAR OF ENGINE) FRESH AIR BLOWER (UNDER RIGHT SIDE OF AIR INTAKE HOUSING) FRESH AIR BLOWER CONTROL MODULE (LOWER RIGHT SIDE OF AIR INTAKE HOUSING) FUSE FUSE 1 FUSE 2 GRY/BLU WIRE HOT AT ALL TIMES HOT W/ MOTRONIC ENGINE CONTROL MODULE (ECM) POWER SUPPLY RELAY ENERGIZED INSTRUMENT CLUSTER CONTROL MODULE NCA WIRE ORG/BLK WIRE ORG/BLU WIRE ORG/BRN WIRE RED WIRE RED/BLU WIRE RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE TERMINAL (MIDDLE OF ENGINE COMPT PLENUM CHAMBER) VIO WIRE WHT/RED WIRE YEL/RED WIRE

3.0L AIR FLOW DOOR MOTOR (LEFT SIDE OF AIR INTAKE HOUSING) BLU/BLK WIRE BLU/GRN WIRE BLU/RED WIRE BLU/WHT WIRE BRAKE LIGHT SWITCH BRN WIRE BRN/BLK WIRE CLIMATRONIC CONTROL MODULE COMPUTER DATA LINES SYSTEM COOLANT PUMP (IF EQUIPPED) DEFROSTER DOOR MOTOR (LEFT SIDE OF A/C UNIT) FUSE FUSE CARRIER 2 GRN/BLU WIRE GRN/YEL WIRE GRY WIRE GRY/BLU WIRE HOT AT ALL TIMES INSTRUMENT CLUSTER CONTROL MODULE LEFT FOOTWELL DOOR MOTOR (LEFT SIDE OF A/C UNIT) LEFT LEFT CENTER TEMPERATURE VENT MOTOR DOOR MOTOR (LEFT SIDE OF A/C UNIT) ORG/BLU WIRE ORG/BRN WIRE ORG/GRN WIRE PASSENGER'S SIDE FUSE PANEL (BEHIND RIGHT END OF DASH) REAR TEMPERATURE FLAP MOTOR REAR TEMPERATURE SELECTION POTENTIOMETER (W/ ADDITIONAL LIGHTING EQUIPMENT) RECIRCULATION DOOR MOTOR (LEFT SIDE OF AIR INTAKE HOUSING) RED WIRE RED/BLU WIRE RED/YEL WIRE RIGHT CENTER VENT MOTOR (LEFT SIDE OF AIR INTAKE HOUSING) RIGHT FOOTWELL DOOR MOTOR (LOWER LEFT SIDE OF AIR INTAKE HOUSING) RIGHT TEMPERATURE DOOR MOTOR (TOP LEFT SIDE OF AIR INTAKE HOUSING) SUNLIGHT PHOTO SENSOR (UNDER CENTER OF DASH) VIO WIRE VIO/RED WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/BRN WIRE WHT/GRN WIRE WHT/GRY WIRE WHT/RED WIRE WHT/VIO WIRE WHT/YEL WIRE

ABS CONTROL MODULE (LEFT SIDE OF ENGINE COMPT) ALL WHEEL DRIVE CONTROL MODULE (IN SPARE TIRE WELL) AUTOMATIC DAY/ NIGHT INTERIOR MIRROR BATTERY MONITORING CONTROL MODULE (MIDDLE OF LUGGAGE COMPT, ON BATTERY) BLK/BLU WIRE BLK/WHT WIRE BLU/RED WIRE BRN WIRE DATA BUS ON BOARD DIAGNOSTIC INTERFACE (BEHIND CENTER OF DASH) DATA LINK CONNECTOR (UNDER LEFT SIDE OF DASH) DIRECT SHIFT GEAR BOX DIRECTIONAL STABILIZATION ASSISTANCE CONTROL MODULE DISTANCE REGULATION CONTROL MODULE (IF EQUIPPED) (RIGHT SIDE OF FRONT BUMPER) ESP SENSOR UNIT (UNDER DRIVER'S SEAT) ESP SENSOR UNIT 2 (W/ DYNAMIC STEERING, GEAR BOX QUATTRO SPORT) FUSE FUSE CARRIER 1 FUSE CARRIER 2 GENERATOR, VOLTAGE REGULATOR GRN/GRY WIRE GRN/VIO WIRE GRY/RED WIRE HEADLAMP RANGE/ CORNERING LAMP CONTROL MODULE (BEHIND GLOVE BOX) HOT AT ALL TIMES HOT W/ POWER SUPPLY RELAY (TERMINAL 15) ENERGIZED LANE CHANGE ASSISTANCE CONTROL MODULE (IF EQUIPPED) (ON LEFT TAILLIGHT ASSEMBLY) LANE CHANGE ASSISTANCE CONTROL MODULE 2 (ON RIGHT TAILLIGHT ASSEMBLY) LEFT RIGHT HEADLAMP HEADLAMP ASSEMBLY ASSEMBLY MULTITRONIC W/O NCA WIRE ORG/BLK WIRE ORG/BLU WIRE ORG/BRN WIRE ORG/GRN WIRE ORG/GRY WIRE ORG/RED WIRE ORG/VIO WIRE ORG/WHT WIRE PASSENGER'S SIDE FUSE PANEL (BEHIND RIGHT END OF DASH) PHASED IN MODIFICATION RED/YEL WIRE SOUND SYSTEMS TRANSMISSION CONTROL MODULE (IN MECHATRONIC UNIT) VIO/BLU WIRE VIO/YEL WIRE VOLTAGE STABILIZER (W/ ENGINE START/ STOP SYSTEM) (IN SPARE TIRE WELL) W/ DIRECTIONAL STABILIZATION ASSISTANCE WHT/GRY WIRE

2.0L 3.0L 3.OL BLK WIRE BLK/RED WIRE BLU/GRN WIRE BRAKE LIGHT SWITCH BRN WIRE BRN/BLK WIRE BRN/GRN WIRE BRN/RED WIRE CLIMATRONIC CONTROL MODULE CLUTCH POSITION SENSOR (M/T) COMPUTER DATA LINES SYSTEM CONTROL VALVE CONTROL MODULE (REAR OF ENGINE) CRUISE CONTROL SWITCH DIRECT SHIFT GEARBOX (DSG) MECHATRONIC DISTANCE REGULATION CONTROL MODULE (IF EQUIPPED) (RIGHT SIDE OF FRONT BUMPER) DRIVER'S SIDE FUSE PANEL (BEHIND LEFT END OF DASH) FUSE FUSE 7 FUSE CARRIER FUSE CARRIER 2 GRN/GRY WIRE GRN/VIO WIRE GRN/YEL WIRE GRY/WHT WIRE GRY/YEL WIRE HOT AT ALL TIMES HOT W/ MOTRONIC ENGINE CONTROL MODULE (ECM) POWER SUPPLY RELAY ENERGIZED HOT W/ POWER SUPPLY RELAY (TERMINAL 15) ENERGIZED LUGGAGE COMPARTMENT RELAY/FUSE CARRIER NCA WIRE ORG/BLK WIRE ORG/BLU WIRE ORG/BRN WIRE ORG/GRN WIRE ORG/GRY WIRE RED WIRE RED/BLK WIRE RED/WHT WIRE SHIFT INTERLOCK SYSTEM TRANSMISSION CONTROL MODULE (TCM) VIO/RED WIRE W/ CVT W/ 6-SPEED A/T W/ DIRECT SHIFT GEAR BOX W/O DIRECT SHIFT GEAR BOX WHT WIRE WHT/BLK WIRE WHT/YEL WIRE YEL/BLU WIRE YEL/VIO WIRE

AIR BAG SPIRAL RETURN/ SLIP RING (IN STEERING COLUMN) BLK WIRE BRN WIRE BUTTONS 1 2 3 4 5 6 7 8 9 10 COMPUTER DATA LINES SYSTEM DRIVER'S AIR BAG IGNITER DRIVER'S AIR BAG IGNITER 2 FUSE 12 FUSE 5 FUSE CARRIER 1 FUSE CARRIER 2 HOT AT ALL TIMES HOT W/ POWER SUPPLY RELAY (TERMINAL 15) ENERGIZED LEFT MULTI-FUNCTION BUTTONS MODE MULTI-FUNCTION STEERING WHEEL CONTROL MODULE NCA WIRE ORG/BLU WIRE ORG/BRN WIRE ORG/GRN WIRE PASSENGER'S SIDE FUSE PANEL (BEHIND RIGHT END OF DASH) RED WIRE RED/WHT WIRE RIGHT MULTI-FUNCTION SIGNAL HORN ACTIVATION STABILIZATION ASSISTANCE) STEERING ANGLE SENSOR (BEHIND STEERING WHEEL) STEERING WHEEL CONTROL MODULE STEERING WHEEL VIBRATION MOTOR (W/ DIRECTIONAL SUPPLEMENTAL RESTRAINTS SYSTEM TIPTRONIC DOWNSHIFT BUTTON (IF EQUIPPED) TIPTRONIC UPSHIFT BUTTON (IF EQUIPPED) W/ TIPTRONIC W/ DIRECTIONAL STABILIZATION ASSISTANCE WHT WIRE YEL WIRE

AIR BAG CONTROL MODULE (BELOW CENTER CONSOLE) AIR BAG SPIRAL SPRING/ RETURN SPRING (W/ SLIP RING) BLK WIRE BLU/GRN WIRE BRN WIRE COMPUTER DATA LINES SYSTEM CRUISE CONTROL SWITCH DRIVER'S AIR BAG IGNITER DRIVER'S SIGNAL HORN AIR BAG ACTIVATION IGNITER 2 ENGINE CONTROLS SYSTEM FUNCTION BUTTONS FUSE 12 FUSE 5 FUSE CARRIER 1 FUSE CARRIER 2 HOT AT ALL TIMES HOT W/ POWER SUPPLY RELAY (TERM 15) ENERGIZED LEFT MULTI- MODE MULTI-FUNCTION STEERING WHEEL CONTROL MODULE NCA WIRE ORG/BLU WIRE ORG/BRN WIRE ORG/GRN WIRE PASSENGER'S SIDE FUSE PANEL (BEHIND RIGHT END OF DASH) RED WIRE RED/WHT WIRE RIGHT MULTI-FUNCTION BUTTONS STEERING ANGLE SENSOR (BEHIND STEERING WHEEL CONTROL MODULE STEERING WHEEL VIBRATION MOTOR STEERING WHEEL) TIPTRONIC DOWNSHIFT BUTTON TIPTRONIC UPSHIFT BUTTON (IF EQUIPPED) TURN SIGNAL SWITCH W/ DIRECTIONAL STABILIZATION ASSISTANCE W/ TIPTRONIC WHT WIRE WINDSHIELD WIPER/ WASHER SWITCH YEL WIRE

BLK/RED WIRE BLU WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/VIO WIRE BRN WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/WHT WIRE BRN/YEL WIRE CAMSHAFT ADJUSTMENT VALVE 1 (LOWER FRONT OF ENGINE) CLIMATRONIC CONTROL MODULE CLIMATRONIC REFRIGERANT SHUT-OFF VALVE (ON REFRIGERANT TUBE) DRIVER'S SIDE FUSE PANEL (BEHIND LEFT END OF DASH) ENGINE COOLANT LEVEL (ECL) SENSOR FUSE 10 FUSE CARRIER 1 GRN WIRE GRN/BRN WIRE GRN/GRY WIRE GRN/VIO WIRE GRN/YEL WIRE GRY/RED WIRE GRY/WHT WIRE HOT AT ALL TIMES INTAKE MANIFOLD RUNNER CONTROL (IMRC) VALVE (LEFT SIDE OF ENGINE) LEAK DETECTION PUMP (LDP) LEFT ELECTRO HYDRAULIC ENGINE MOUNT SOLENOID VALVE (A/T) (LEFT SIDE) OF ENGINE) OIL PRESSURE REGULATION VALVE (LOWER LEFT FRONT OF ENGINE) POWER DISTRIBUTION SYSTEM RED WIRE RED/BLU WIRE RED/BRN WIRE RED/GRN WIRE RED/WHT WIRE TURBOCHARGER RECIRCULATING VALVE (RIGHT FRONT OF ENGINE) VIO/GRY WIRE WASTEGATE BYPASS REGULATOR VALVE (RIGHT FRONT OF ENGINE) WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/GRY WIRE WHT/RED WIRE WHT/VIO WIRE YEL WIRE YEL/BLK WIRE YEL/BLU WIRE YEL/RED WIRE YEL/VIO WIRE