Mercedes-Benz S-class W221 (2005-2009) front prefuse Wiring diagrams

BLK/YEL WIRE BLU WIRE BLU/WHT WIRE BRN WIRE BRN/BLK WIRE COOLANT CIRCULATION PUMP (IN LEFT REAR OF ENGINE COMPT) FRESH AIR/ RECIRCULATED AIR FLAP ACTUATOR MOTOR (RIGHT SIDE OF HVAC UNIT) FRONT PREFUSE FUSE 4 GRN WIRE GRY/BRN WIRE GRY/RED WIRE GRY/VIO WIRE HOT AT ALL TIMES LEFT CENTER AIR FLAP ACTUATOR MOTOR LEFT DEFROSTER VENT FLAP ACTUATOR MOTOR (LEFT SIDE OF HVAC UNIT) LEFT FOOTWELL FLAP ACTUATOR MOTOR (LOWER LEFT SIDE OF HVAC UNIT) LEFT FOOTWELL TEMPERATURE SENSOR LEFT SIDE OUTLET FLAP ACTUATOR MOTOR LEFT SIDE OUTLET TEMPERATURE SENSOR LOWER LEFT BLENDING AIR FLAP ACTUATOR MOTOR LOWER RIGHT BLENDING AIR FLAP ACTUATOR MOTOR NON-VENTILATED INTERIOR AIR IN-CAR TEMPERATURE COCKPIT SENSOR PNK WIRE RED WIRE RED/GRN WIRE RIGHT CENTER AIR FLAP ACTUATOR MOTOR RIGHT DEFROSTER VENT FLAP ACTUATOR MOTOR (CENTER OF HVAC UNIT) RIGHT FOOTWELL FLAP ACTUATOR MOTOR (LOWER CENTER OF HVAC UNIT) RIGHT FOOTWELL TEMPERATURE SENSOR RIGHT SIDE OUTLET FLAP ACTUATOR MOTOR RIGHT SIDE OUTLET TEMPERATURE SENSOR UPPER LEFT BENDING AIR FLAP ACTUATOR MOTOR UPPER RIGHT BLENDING AIR FLAP ACTUATOR MOTOR VIO WIRE WHT/BLK WIRE WHT/BRN WIRE WHT/GRN WIRE WHT/GRY WIRE WHT/RED WIRE WHT/VIO WIRE YEL WIRE YEL/BLU WIRE YEL/BRN WIRE YEL/GRN WIRE YEL/RED WIRE YEL/VIO WIRE YEL/WHT WIRE

15 16 CAN-B H CAN-B L 41 54 CAN E H CAN E L BLK/BRN WIRE BLK/YEL WIRE BRN WIRE BRN/GRN WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM COOLANT CIRCULATION PUMP (IN LEFT REAR OF ENGINE COMPT) COOLANT TEMPERATURE SENSOR (TOP FRONT OF ENGINE) ELECTRIC SUCTION FAN ENGINE, A/C W/ INTEGRATED CONTROL ENGINE CONTROLS SYSTEM FRONT PREFUSE FRONT SAM CONTROL MODULE W/ FUSE/ RELAY MODULE FUSE 4 GRN WIRE GRN/WHT WIRE HOT AT ALL TIMES ME-SFI (ME) CONTROL UNIT (RIGHT REAR OF ENGINE COMPT) RED WIRE RED/BLK WIRE RED/GRN WIRE

26 25 CAN-BH CAN-BL AIRMATIC COMPRESSOR UNIT AIRMATIC W/ ADS CONTROL MODULE (LEFT REAR OF ENGINE COMPT) BLK/PNK WIRE BLK/YEL WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/RED WIRE BLU/WHT WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/GRY WIRE BRN/WHT WIRE BRN/YEL WIRE COMPUTER DATA LINES DATALINK CONNECTOR (AT UPPER LEFT FOOTWELL) FRONT PREFUSE FRONT SAM CONTROL W/ FUSE, RELAY MODULE FUSE 56 FUSE 6 FUSE 9 GRN/RED WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/GRN WIRE GRY/RED WIRE GRY/VIO WIRE GRY/WHT WIRE GRY/YEL WIRE HOT AT ALL TIMES LEFT FRONT AXLE DAMPER VALVE UNIT (AT LEFT FRONT WHEEL HOUSE) LEFT FRONT BODY ACCELERATION SENSOR (LEFT FRONT OF ENGINE COMPT) LEFT FRONT LEVEL SENSOR (LEFT FRONT WHEELWELL) NCA WIRE NVR NHL VAR 2 NVLS 1 NVRS 1 VKPS VAL 1 VAL 2 30 VALV+ RED WIRE RED/BLK WIRE RED/GRN WIRE RED/WHT WIRE RIGHT FRONT AXLE DAMPER VALVE UNIT (AT RIGHT FRONT WHEEL HOUSE) RIGHT FRONT BODY ACCELERATION SENSOR (RIGHT FRONT OF ENGINE COMPT) RIGHT FRONT LEVEL SENSOR (RIGHT FRONT WHEELWELL) SYSTEM VKPV WHT/BLK WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/GRY WIRE WHT/PNK WIRE YEL/BLK WIRE YEL/VIO WIRE ZAMVL NVLM ZASVL VAR 1 ZASVL 31 VARV+ NSP NHR ZAVVL NVLV NVL ZAMVL NVRM ZAVVL NVRV

1 2 CAN-E H CAN-E L 13 14 2 CAN-B H CAN-B L 3.BL 14 27 KZL-R KZL-L 3 1 7 8 NSL-R BSL-R RFL-L BI-R 4 9 5 6 NSL-L BSL-L RFL-L 57 L BLK WIRE BLK/GRN WIRE BLK/WHT WIRE BLU WIRE BRN WIRE BRN/GRY WIRE CENTER HIGH MOUNTED STOP LAMP COMPUTER DATA LINES SYSTEM FRONT PREFUSE FRONT SAM CONTROL MODULE W/ FUSE/ RELAY MODULE FUSE GRN WIRE GRN/BLU WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/GRN WIRE GRY/PNK WIRE GRY/VIO WIRE GRY/YEL WIRE HOT AT ALL TIMES LEFT FRONT HEADLAMP UNIT LEFT FRONT SIDE LEFT LICENSE PLATE LAMP LEFT TAILLAMP MARKER LAMP NCA WIRE PNK 6 WIRE REAR REAR SIDE MARKER LAMP FOG LAMP REAR SAM CONTROL MODULE W/ FUSE, RELAY MODULE REAR TURN SIGNAL LAMP SIDE BACKUP LAMP MARKER LAMP RED WIRE RED/GRY WIRE RIGHT FRONT RIGHT FRONT HEADLAMP UNIT RIGHT LICENSE PLATE LAMP RIGHT TAILLAMP SIDE MARKER LAMP STANDING/ PARKING LAMP STOP, TAIL, PARKING LAMP BACKUP LAMP STOP, TAIL, PARKING LAMP REAR FOG LAMP TURN SIGNAL LAMP TURN SIGNAL LAMP STANDING, PARKING LAMP VEHICLE POWER SUPPLY CONTROL UNIT VIO WIRE W/ BACKUP CAMERA WHT WIRE YEL WIRE YEL/GRN WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 MLS+ GND MLS- AIR CONDITIONING SYSTEM AIR CONDITIONING SYSTEM COMPUTER DATA LINES SYSTEM AIR CONDITIONING SYSTEM INSTRUMENT CLUSTER SYSTEM ANTI-LOCK BRAKES SYSTEM BLK WIRE BLK/BLU WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/WHT WIRE BLK/YEL WIRE BLU/GRN WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/PNK WIRE BRN/WHT WIRE BRN/YEL WIRE CAN C L CAN C H CAN E H CAN E L CAN-B H CAN-B L COMPUTER DATA LINES SYSTEM COMPUTER DATA LINES SYSTEM AIR CONDITIONING SYSTEM DATA ELECTRONIC SUSPENSION SYSTEM ELECTRONIC SUSPENSION SYSTEM SHIFT INTERLOCK SYSTEM ENGINE CONTROLS SYSTEM ENGINE CONTROLS SYSTEM ENGINE CONTROLS SYSTEM ENGINE CONTROLS SYSTEM REAR SAM CONTROL MODULE CIRCUIT ENGINE CONTROLS SYSTEM STARTING/CHARGING SYSTEM ENGINE CONTROLS SYSTEM TRANSMISSIONS SYSTEM FRONT PREFUSE FRONT SAM CONTROL MODULE W/ FUSE/ RELAY MODULE FUSE FUSE 6 GRN WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/GRN WIRE GRY/YEL WIRE HOT AT ALL TIMES HOT AT ALL TIMES VEHICLE FUSE POWER SUPPLY CONTROL UNIT LEFT FRONT DOOR CONTROL MODULE (IN LEFT FRONT DOOR) LIN BUS LIN-BUS LIN-BUS CAN-B H CAN-B L MEMORY SYSTEMS MLS+ H+ MLS- H+ PNK WIRE PNK/BLU WIRE PNK/RED WIRE POWER DISTRIBUTION SYSTEM REAR SAM CONTROL MODULE CIRCUIT RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/GRY WIRE RED/WHT WIRE RED/YEL WIRE SEATS SYSTEM SEATS SYSTEM ELECTRONIC POWER STEERING SYSTEM SEATS SYSTEM STARTING/CHARGING SYSTEM TRANSMISSIONS SYSTEM VIO WIRE VIO/WHT WIRE WHT WIRE WIPER/WASHER SYSTEM WIPER/WASHER SYSTEM AIR CONDITIONING SYSTEM WIPER/WASHER SYSTEM YEL WIRE YEL/GRY WIRE YEL/RED WIRE YEL/WHT WIRE

1 2 3 4 5 6 7 8 9 10 57 R 1 2 3 4 5 6 7 8 9 10 CAN-E H 5 6 7 8 9 10 57 L AIR CONDITIONING SYSTEM AIR CONDITIONING SYSTEM ELECTRONIC POWER STEERING SYSTEM AUSTEMP+ BLK WIRE BLU/WHT WIRE BRN WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/WHT WIRE BRN/YEL WIRE CAN E L COMPUTER DATA LINES SYSTEM CRUISE CONTROL SYSTEM DATA ELECTRONIC POWER STEERING SYSTEM ENGINE CONTROLS SYSTEM FRONT PREFUSE FRONT SAM CONTROL MODULE W/ FUSE, FRONT SAM CONTROL MODULE W/ FUSE/ RELAY MODULE FUSE GRN WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/GRN WIRE GRY/VIO WIRE GRY/YEL WIRE HEADLIGHTS SYSTEM HEADLIGHTS SYSTEM EXTERIOR LIGHTS SYSTEM HORNS SYSTEM HOT AT ALL TIMES INSTRUMENT CLUSTER SYSTEM INSTRUMENT CLUSTER SYSTEM WIPER/WASHER SYSTEM INSTRUMENT CLUSTER SYSTEM NAVIGATION SYSTEM PNK/BLU WIRE PNK/GRN WIRE PNK/RED WIRE POWER DISTRIBUTION SYSTEM RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE RELAY MODULE SIG GND GND GND AUSTEMP- SIG SIG SPIEGEL R SUPPLEMENTAL RESTRAINTS SYSTEM VIO WIRE WARNING SYSTEMS WIPER/WASHER SYSTEM WIPER/WASHER SYSTEM ELECTRONIC SUSPENSION SYSTEM WIPER/WASHER SYSTEM INSTRUMENT CLUSTER SYSTEM WARNING SYSTEMS YEL WIRE YEL/BLK WIRE YEL/BLU WIRE YEL/BRN WIRE YEL/GRN WIRE

AC RECIRCULATION UNIT AIR SUSPENSION COMPRESSOR RELAY BATTERY COUPLING RELAY BLK WIRE BRN WIRE CENTRAL GATEWAY CONTROL MODULE DATA LINK CONNECTOR ELECTRIC SUCTION FAN ENGINE, A/C W/ INTEGRATED RELAY MODULE EMERGENCY CALL SYSTEM CONTROL UNIT ESP CONTROL MODULE FROM FRONT PREFUSE (DIAGRAM 1 OF 4) FRONT PREFUSE FRONT SAM CONTROL MODULE W/ FUSE/ RELAY MODULE FUSE 1 FUSE 10 FUSE 2 FUSE 3 FUSE 29 TO CHASSIS CIRCUIT 87 RELAY (DIAGRAM 3 OF 4) FUSE 3 FUSE 36 FAN WIPER PARK RELAY HEATER MODULE RELAY FUSE 38 FUSE 37 FUSE 39 TO CIRCUIT 15 RELAY (DIAGRAM 4 OF 4) FUSE 4 FUSE 40 AIR ENGINE PUMP CIRCUIT 87 RELAY RELAY FUSE 5 FUSE 5 FUSE 8 FUSE 54 FUSE 6 FUSE 7 FUSE 8 FUSE 9 GENERATOR HEATED WINDSHIELD CONTROL MODULE INSTRUMENT CLUSTER ON-BOARD ELECTRICAL NETWORK LINE PYROFUSE ON-BOARD ELECTRICAL NETWORK LINE PYROFUSE TEMPERATURE SENSOR ON-BOARD ELECTRICAL SYSTEM BATTERY PNK/RED WIRE QUIESCENT CURRENT CUTOUT RELAY RED WIRE RED/BLK WIRE RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE RELAY (DIAGRAM 4 OF 4) STARTER STARTER BATTERY STARTER CIRCUIT 15 RELAY TO EIS (EZS) CONTROL UNIT (DIAGRAM 4 OF 4) TO FRONT SAM CONTROL MODULE W/ FUSE, RELAY MODULE (DIAGRAM 1 OF 4) TO FRONT SAM CONTROL MODULE W/ FUSE, RELAY MODULE (DIAGRAM 3 OF 4) TO LEFT INSTRUMENT PANEL FUSE BOX (DIAGRAM 3 OF 4) TO REAR SAM CONTROL MODULE W/ FUSE, RELAY MODULE (DIAGRAM 2 OF 4) TO REAR SAM CONTROL MODULE W/ FUSE, RELAY MODULE (DIAGRAM 3 OF 4) TO RIGHT INSTRUMENT PANEL FUSE BOX (DIAGRAM 2 OF 4) TO SPECIAL PROTECTION VEHICLE ADDITIONAL FUSE HOLDER (DIAGRAM 2 OF 4) UPPER CONTROL PANEL CONTROL MODULE VEHICLE POWER SUPPLY CONTROL UNIT YEL/RED WIRE

1 2 3 4 30 31 CAN-A L CAN-A H 15 16 CAN-B H CAN-B L 41 54 CAN E H CAN E L 5 4 6 LIN-DATA LIN (-) LIN (+) AAC (KLA) CONTROL UNIT BLK WIRE BLK/BLU (OR BLK/PNK) WIRE BLK/BLU WIRE BLK/BRN WIRE BLK/GRY WIRE BLK/ORG WIRE BLK/PNK WIRE BLK/WHT WIRE BLU WIRE BRN WIRE BRN/BLK WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/PNK WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM COOLANT CIRCULATION PUMP ELECTRIC SUCTION FAN ENGINE, A/C W/ INTEGRATED CONTROL ENGINE CONTROLS SYSTEM FRONT PREFUSE FRONT SAM CONTROL MODULE W/ FUSE/ RELAY MODULE FUSE 108 FUSE 4 GRN WIRE GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE GRY/BLU WIRE GRY/GRN WIRE GRY/ORG WIRE HEATED WINDSHIELD CONTROL MODULE (W/ SPECIAL PROTECTION) HOT AT ALL TIMES HOT AT ALL TIMES LEFT INSTRUMENT PANEL FUSE BOX FUSE 109 LEFT "B" PILLAR AIR DISTRIBUTION ACTUATOR MOTOR LEFT DUOVALVE LEFT REAR CENTER VENT FLAP ACTUATOR MOTOR ME-SFI (ME) CONTROL UNIT (RIGHT REAR OF ENGINE COMPT) PNK WIRE PNK/GRY WIRE REAR A/C CONTROL MODULE REAR A/C ELECTRONIC BLOWER REGULATOR (IN REAR OF CENTER CONSOLE) REAR AUXILIARY HEATER SUPPLY UNIT REAR BLOWER MOTOR (IN REAR OF CENTER CONSOLE) REAR EVAPORATOR TEMPERATURE SENSOR (REAR OF CENTER CONSOLE) REAR REFRIGERANT SHUT-OFF VALVE (AT LEFT FRONT WHEELHOUSE) RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/WHT WIRE RIGHT "B" PILLAR AIR DISTRIBUTION ACTUATOR MOTOR RIGHT DUOVALVE RIGHT REAR CENTER VENT FLAP ACTUATOR MOTOR RIGHT REAR HEATER EXCHANGER TEMPERATURE SENSOR VIO WIRE W/ REAR WINDOW DEFROSTER W/O REAR WINDOW DEFROSTER YEL WIRE YEL/BLK WIRE YEL/BLU WIRE YEL/RED WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 MLS+ GND MLS- AIR CONDITIONING SYSTEM AIR CONDITIONING SYSTEM COMPUTER DATA LINES SYSTEM AIR CONDITIONING SYSTEM INSTRUMENT CLUSTER SYSTEM ANTI-LOCK BRAKES SYSTEM BLK WIRE BLK/BLU WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/WHT WIRE BLK/YEL WIRE BLU/GRN WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/PNK WIRE BRN/WHT WIRE BRN/YEL WIRE CAN C L CAN C H CAN E H CAN E L CAN-B H CAN-B L COMPUTER DATA LINES SYSTEM COMPUTER DATA LINES SYSTEM AIR CONDITIONING SYSTEM DATA ELECTRONIC SUSPENSION SYSTEM ELECTRONIC SUSPENSION SYSTEM SHIFT INTERLOCK SYSTEM ENGINE CONTROLS SYSTEM ENGINE CONTROLS SYSTEM ENGINE CONTROLS SYSTEM ENGINE CONTROLS SYSTEM REAR SAM CONTROL MODULE CIRCUIT ENGINE CONTROLS SYSTEM STARTING/CHARGING SYSTEM ENGINE CONTROLS SYSTEM TRANSMISSIONS SYSTEM FRONT PREFUSE FRONT SAM CONTROL MODULE W/ FUSE/ RELAY MODULE FUSE FUSE 6 GRN WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/GRN WIRE GRY/YEL WIRE HOT AT ALL TIMES HOT AT ALL TIMES VEHICLE FUSE POWER SUPPLY CONTROL UNIT LEFT FRONT DOOR CONTROL MODULE (IN LEFT FRONT DOOR) LIN BUS LIN-BUS LIN-BUS CAN-B H CAN-B L MLS+ H+ MLS- H+ PNK WIRE PNK/BLU WIRE PNK/RED WIRE POWER DISTRIBUTION SYSTEM REAR SAM CONTROL MODULE CIRCUIT RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/GRY WIRE RED/WHT WIRE RED/YEL WIRE SEATS SYSTEM SEATS SYSTEM ELECTRONIC POWER STEERING SYSTEM SEATS SYSTEM STARTING/CHARGING SYSTEM TRANSMISSIONS SYSTEM VIO WIRE VIO/WHT WIRE WHT WIRE WIPER/WASHER SYSTEM WIPER/WASHER SYSTEM AIR CONDITIONING SYSTEM WIPER/WASHER SYSTEM YEL WIRE YEL/GRY WIRE YEL/RED WIRE YEL/WHT WIRE

1 2 3 FLAT WIRE FLAT WIRE FLAT WIRE 1 2 CAN B L CAN B H 10 11 CAN-E H CAN-E L 14 5 13 11 12 9 3 1 7 H+ GND MLS- MLS+ H+ GND MLS- MLS+ 31 16 15 CAN-B L CAN-B H 3 2 1 DATA 31 UB BLK/WHT WIRE BLK/YEL WIRE BRN WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM FLAT WIRE FLAT WIRE FLAT WIRE FRONT PREFUSE FRONT SAM CONTROL MODULE W/ FUSE/ RELAY MODULE FUSE GRN WIRE GRN/WHT WIRE GRN/YEL WIRE HOT AT ALL TIMES LEFT FRONT DOOR CONTROL MODULE (IN LEFT FRONT DOOR) LEFT FRONT SEAT OPERATION SWITCH GROUP MEMORY 1, 2, 3 SWITCH MEMORY STORE BUTTON SWITCH RAISE/LOWER, FORWARD/ BACKWARD SWITCH RED WIRE RED/WHT WIRE RED/YEL WIRE STEERING COLUMN ADJUSTMENT, STEERING WHEEL HEATER SWITCH STEERING COLUMN FORWARD/BACKWARD MOTOR STEERING COLUMN MODULE (AT TOP OF STEERING COLUMN) STEERING COLUMN RAISE/LOWER MOTOR