Audi A4 B8 (2007-2012) vehicle electrical system control module (under left side of dash) Wiring diagrams

ACCESS/START AUTHORIZATION BUTTON (W/ START/STOP BUTTON) BLK WIRE BLK/VIO WIRE BLU WIRE BLU/BLK WIRE BLU/GRY WIRE BRN WIRE COMFORT SYSTEM CONTROL MODULE (RIGHT SIDE OF TRUNK) COMPUTER DATA LINES SYSTEM DRIVER'S SIDE FUSE PANEL (BEHIND LEFT END OF DASH) ENGINE 1 2 3 4 5 6 7 8 9 CONTROLS SYSTEM ENGINE CONTROLS SYSTEM FUSE 1 FUSE CARRIER 1 FUSE 10 GRN/VIO WIRE GRN/YEL WIRE GRY WIRE GRY/BLK WIRE GRY/WHT WIRE GRY/YEL WIRE HOT AT ALL TIMES HOT W/ POWER SUPPLY RELAY (TERMINAL 15) ENERGIZED ORG/BLK WIRE ORG/BRN WIRE POWER DISTRIBUTION SYSTEM PRNDS RED WIRE RED/BRN WIRE SELECTOR LEVER SENSOR SYSTEM CONTROL MODULE (ON SHIFTER UNIT) TRANSMISSION CONTROL MODULE (TCM) (IN MECHATRONIC UNIT) TRANSMISSION PARK SELECTOR SWITCH, SHIFT LOCK SOLENOID VEHICLE ELECTRICAL SYSTEM CONTROL MODULE (UNDER LEFT SIDE OF DASH) VIO WIRE YEL WIRE

2.0L ACCESS/START AUTHORIZATION BUTTON (W/ START/STOP BUTTON) BLK WIRE BLK/VIO WIRE BLU WIRE BLU/BLK WIRE BLU/GRY WIRE BRN WIRE COMFORT SYSTEM CONTROL MODULE (RIGHT SIDE OF TRUNK) COMPUTER DATA LINES SYSTEM COMPUTER DATA LINES SYSTEM ENGINE CONTROLS SYSTEM DRIVER'S SIDE FUSE PANEL (BEHIND LEFT END OF DASH) ENGINE CONTROLS SYSTEM FUSE FUSE CARRIER 1 FUSE 10 GRN/VIO WIRE GRN/YEL WIRE GRY WIRE GRY/BLK WIRE GRY/WHT WIRE GRY/YEL WIRE HOT W/ POWER SUPPLY RELAY (TERMINAL 15) ENERGIZED ORG/BLK WIRE ORG/BRN WIRE POWER DISTRIBUTION SYSTEM PRNDS RED WIRE RED/BRN WIRE SELECTOR LEVER SENSOR SYSTEM CONTROL MODULE (ON SHIFTER UNIT) TRANSMISSION CONTROL MODULE (TCM) (IN MECHATRONIC UNIT) TRANSMISSION PARK SELECTOR SWITCH, SHIFT LOCK SOLENOID VEHICLE ELECTRICAL SYSTEM CONTROL MODULE (UNDER LEFT SIDE OF DASH) VIO WIRE YEL WIRE

AMBIENT ILLUMINATION 1 AVANT BLK WIRE BLK/GRN WIRE BLK/VIO WIRE BLU WIRE BRN WIRE COMFORT SYSTEM CONTROL MODULE (RIGHT SIDE OF TRUNK) COMPUTER DATA LINES SYSTEM DRIVER'S MAKE-UP MIRROR LIGHT CONTACT SWITCH DRIVER'S SIDE FUSE PANEL (BEHIND LEFT END OF DASH) FRONT PASSENGER'S MAKE-UP MIRROR FUSE FUSE CARRIER 1 GLOVE COMPARTMENT LAMP SWITCH GLOVE COMPARTMENT LIGHT GRN WIRE GRY WIRE HOT W/ POWER SUPPLY RELAY (TERMINAL 15) ENERGIZED ILLUMINATION (W/ ADDITIONAL LIGHTING EQUIPMENT) LEFT FRONT FOOTWELL LIGHT LEFT LUGGAGE COMPARTMENT LEFT MAKE-UP LEFT REAR FOOTWELL LIGHT LIGHT LIGHT CONTACT SWITCH LUGGAGE COMPARTMENT LIGHT MIRROR ILLUMINATION (W/ ADDITIONAL LIGHTING EQUIPMENT) ORG/ WIRE ORG/BRN WIRE ORG/GRN WIRE REAR LID LOCK BUTTON RED WIRE RED/GRY WIRE RED/YEL WIRE RIGHT FRONT FOOTWELL LIGHT RIGHT LUGGAGE COMPARTMENT RIGHT MAKE-UP MIRROR RIGHT REAR FOOTWELL LIGHT SEDAN VEHICLE ELECTRICAL SYSTEM CONTROL MODULE (UNDER LEFT SIDE OF DASH) VIO WIRE W/O LED W/ LED WHT WIRE YEL WIRE

BACKREST BOLSTER HEATER BLK/RED WIRE BLK/WHT WIRE BLK/YEL WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/WHT WIRE DISCONTINUED PHASED IN MODIFICATION DRIVER BACKREST HEATING ELEMENT DRIVER SEAT BACKREST BLOWER FAN DRIVER SEAT BACKREST BLOWER FAN 2 DRIVER SEAT CUSHION BLOWER FAN DRIVER SEAT CUSHION BLOWER FAN 2 FRONT PASSENGER SEAT BACKREST FAN (TOP OF FRONT PASSENGER SEAT BACKREST) FRONT PASSENGER SEAT BACKREST FAN 2 (MIDDLE OF FRONT PASSENGER SEAT BACKREST) FRONT PASSENGER SEAT CUSHION FAN (UNDER FRONT OF FRONT PASSENGER SEAT CUSHION) FRONT PASSENGER SEAT CUSHION FAN 2 (UNDER REAR OF FRONT PASSENGER SEAT CUSHION) FUSE CARRIER FUSE 2 GRN WIRE HEATING ELEMENT HEATING ELEMENT FRONT PASSENGER BACKREST HEATING ELEMENT HOT AT ALL TIMES LEFT FRONT SEAT HEATER LEFT FRONT SEAT VENTILATION CONTROL MODULE LUGGAGE COMPARTMENT RELAY/FUSE CARRIER (RIGHT SIDE OF LUGGAGE COMPT) PHASED IN MODIFICATION RED WIRE RED/BLK WIRE RED/GRN WIRE RED/YEL WIRE RIGHT FRONT SEAT HEATER SEAT TEMPERATURE SENSOR SIDE BOLSTER HEATER SIDE HEATING ELEMENT BOLSTER HEATER TEMPERATURE SENSOR VEHICLE ELECTRICAL SYSTEM CONTROL MODULE (UNDER LEFT SIDE OF DASH) VIO WIRE YEL WIRE

BACKREST HEATING ELEMENT BACKREST SIDE BOLSTER HEATER (IF EQUIPPED) BLK WIRE BLK/WHT WIRE BLU WIRE BRN WIRE COMPUTER DATA LINES SYSTEM DRIVER'S BACKREST HEATING ELEMENT DRIVER'S SEAT HEATER LEFT FRONT SEAT TEMP SENSOR DRIVER'S SIDE FUSE PANEL (BEHIND LEFT END OF DASH) FRONT PASSENGER'S BACKREST HEATING ELEMENT FRONT PASSENGER'S SEAT HEATER FUSE FUSE CARRIER 2 GRN WIRE GRN/BRN WIRE HOT AT ALL TIMES ORG/BRN WIRE ORG/GRN WIRE RED WIRE RED/BLK WIRE RED/GRN WIRE RED/WHT WIRE RIGHT FRONT SEAT TEMP SENSOR SEAT HEATING ELEMENT SIDE BOLSTER HEATER (IF EQUIPPED) VEHICLE ELECTRICAL SYSTEM CONTROL MODULE (UNDER LEFT SIDE OF DASH) WHT WIRE YEL WIRE YEL/BLU WIRE

12 V SOCKET (IF BLK WIRE BLK/VIO WIRE BLU WIRE BLU/BRN WIRE BRN WIRE CENTER INSTRUMENT PANEL VENT ILLUMI- NATION COMPUTER DATA LINES SYSTEM DISCONTINUED PHASED IN MODIFICATION DRIVER'S SIDE FUSE PANEL (BEHIND LEFT END OF DASH) ELECTROMECHANICAL PARKING BRAKE BUTTON EQUIPPED) FOG LAMP BUTTON REAR FOG LAMP BUTTON INSTRUMENT PANEL ILLUMINATION DIMMER SWITCH FUSE FUSE CARRIER 1 FUSE CARRIER 2 GARAGE DOOR OPENER CONTROL MODULE (BEHIND CENTER OF FRONT GRILLE) GRN WIRE GRY WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/RED WIRE GRY/YEL WIRE HOT AT ALL TIMES HOT W/ POWER SUPPLY RELAY (TERMINAL 15) ENERGIZED LEFT INSTRUMENT PANEL VENT ILLUMI- NATION LEFT REAR DOOR OPENER ILLUMINATION LEFT REAR DOOR WARNING LIGHT LEFT REAR ENTRY LIGHT LEFT REAR INTERIOR LOCK SWITCH LEFT REAR WINDOW SWITCH LIGHT SWITCH ORG/BRN WIRE ORG/GRN WIRE PARKING AID BUTTON, ASR/ESP BUTTON, REAR WINDOW SHADE SWITCH PASSENGER'S SIDE FUSE PANEL REAR TEMPERATURE SELECTION POTENTIOMETER RED WIRE RIGHT INSTRUMENT PANEL VENT ILLUMINATION RIGHT REAR DOOR CONTROL MODULE (IN RIGHT REAR DOOR) RIGHT REAR DOOR OPENER ILLUMINATION RIGHT REAR INTERIOR LOCK SWITCH RIGHT REAR RIGHT REAR ENTRY LIGHT DOOR WARNING LIGHT RIGHT REAR WINDOW SWITCH VALET PARKING LOCK BUTTON VEHICLE ELECTRICAL SYSTEM CONTROL MODULE (UNDER LEFT SIDE OF DASH) VIO WIRE VIO/BLU WIRE VIO/GRY WIRE W/ NAVIGATION SYSTEM W/O NAVIGATION SYSTEM

BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLK/YEL WIRE BLU WIRE BRN WIRE FUSE FUSE CARRIER 3 FUSE CARRIER 4 GRN WIRE GRY/BLU WIRE HEATED SEAT TEMPERATURE SENSOR HOT AT ALL TIMES HOT W/ POWER SUPPLY RELAY (TERMINAL 15) ENERGIZED LEFT REAR BACKREST HEATING ELEMENT LEFT REAR HEATED SEAT REGULATING SWITCH LEFT REAR SEAT HEATER LUGGAGE COMPARTMENT RELAY/FUSE CARRIER (RIGHT SIDE OF LUGGAGE COMPT) RED WIRE RIGHT REAR BACKREST HEATING ELEMENT RIGHT REAR HEATED SEAT REGULATING SWITCH RIGHT REAR SEAT HEATER SEAT HEATING ELEMENT SEAT OCCUPIED SENSOR VEHICLE ELECTRICAL SYSTEM CONTROL MODULE (UNDER LEFT SIDE OF DASH) VIO WIRE VIO/RED WIRE WHT WIRE WHT/GRN WIRE WHT/YEL WIRE YEL WIRE

2.0L 3.0L ACCESS/START AUTHORIZATION BUTTON BLU/GRY WIRE BRN WIRE CLIMATRONIC CONTROL MODULE COMFORT SYSTEM CENTRAL CONTROL MODULE (RIGHT SIDE OF TRUNK) COMPUTER DATA LINES SYSTEM DRIVER'S SIDE FUSE PANEL (BEHIND LEFT END OF DASH) FUSE FUSE CARRIER 1 GRN/VIO WIRE GRY/BLK WIRE GRY/WHT WIRE HOT W/ POWER SUPPLY RELAY (TERMINAL 15) ENERGIZED ORG/BLK WIRE ORG/BRN WIRE POWER DISTRIBUTION SYSTEM PRNDS RED/BLK WIRE RED/BRN WIRE SELECTOR LEVER SENSOR SYSTEM CONTROL MODULE (ON SHIFTER UNIT) TRANSMISSION CONTROL MODULE (TCM) DIRECT SHIFT GEARBOX (DSG) MECHATRONIC VEHICLE ELECTRICAL SYSTEM CONTROL MODULE (UNDER LEFT SIDE OF DASH) W/ 6 SPEED A/T W/ CVT W/ DIRECT SHIFT W/O DIRECT SHIFT

2.0L 3.0L BATTERY BATTERY INTERRUPT IGNITER BATTERY JUMP BATTERY MONITORING CONTROL MODULE (MIDDLE OF LUGGAGE COMPT, ON BATTERY) BLK WIRE BLK/BLU WIRE BLK/RED WIRE BLK/VIO WIRE BLK/WHT WIRE BLU/GRY WIRE BLU/WHT WIRE BRN WIRE CHARGING CIRCUIT CLUTCH POSITION SENSOR COMFORT SYSTEM CENTRAL CONTROL MODULE (RIGHT SIDE COMPUTER DATA LINES SYSTEM DRIVER'S SIDE FUSE PANEL E-BOX RELAY/ FUSE CARRIER (IN PLENUM CHAMBER ELECTRONICS BOX) ENGINE CONTROL MODULE (ECM) (2.0L: LEFT SIDE OF ENGINE COMPT PLENUM CHAMBER) ENGINE CONTROLS SYSTEM FUSE FUSE 1 FUSE 10 FUSE 16 FUSE CARRIER FUSE CARRIER 1 FUSE CARRIER 2 FUSE PANEL GRN/GRY WIRE GRN/VIO WIRE GRY/BLK WIRE GRY/WHT WIRE HOT W/ MOTRONIC ENGINE CONTROL MODULE (ECM) POWER SUPPLY RELAY ENERGIZED HOT W/ POWER SUPPLY RELAY (TERMINAL 15) ENERGIZED M/T NCA WIRE OF TRUNK) ORG/BLK WIRE ORG/BRN WIRE POWER DISTRIBUTION SYSTEM POWER SUPPLY RELAY (TERMINAL 15) (ON VEHICLE ELECTRICAL SYSTEM CONTROL MODULE PRNDS RED WIRE RED/BLK WIRE RED/BRN WIRE RELAY/FUSE CARRIER SELECTOR LEVER SENSOR SYSTEM CONTROL MODULE (ON SHIFTER UNIT) SHIFT INTERLOCK SYSTEM SOCKETS RELAY (LUGGAGE COMPT RELAY/FUSE CARRIER) STARTER STARTER RELAY (ON E-BOX RELAY/FUSE CARRIER) STARTER RELAY 2 (ON E-BOX RELAY/FUSE CARRIER) SUPPLEMENTAL RESTRAINTS SYSTEM TERMINAL (MIDDLE OF ENGINE COMPT PLENUM CHAMBER) TRANSMISSION CONTROL MODULE (TCM) DIRECT SHIFT GEARBOX (DSG) MECHATRONIC VEHICLE ELECTRICAL SYSTEM CONTROL MODULE (UNDER LEFT SIDE OF DASH) VIO/GRY WIRE W/ 6 SPEED A/T W/ CVT W/ DIRECT SHIFT GEARBOX W/O DIRECT SHIFT GEARBOX

ACCESS/START AUTHORIZATION SWITCH BRN WIRE COMFORT SYSTEM CENTRAL CONTROL MODULE (RIGHT SIDE OF TRUNK) ELECTRONIC STEERING COLUMN LOCK CONTROL MODULE (NEAR STEERING COLUMN) FUSE FUSE CARRIER 2 GRY/BLK WIRE HOT AT ALL TIMES PANEL (BEHIND RIGHT END OF DASH) PASSENGER'S SIDE FUSE RED WIRE RED/BLU WIRE RED/VIO WIRE VEHICLE ELECTRICAL SYSTEM CONTROL MODULE (UNDER LEFT SIDE OF DASH) VIO WIRE VIO/BLU WIRE WHT/BLK WIRE