Mercedes-Benz S-class W221 facelift (2009-2013) engine Wiring diagrams

15 16 CAN-B H CAN-B L 41 54 CAN E H CAN E L BLK/ORG WIRE BLK/YEL WIRE BRN WIRE BRN/GRN WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM COOLANT TEMPERATURE SENSOR (5.5L: FRONT OF ENGINE) ENGINE ENGINE CONTROLS SYSTEM ENGINE COOLANT CIRCULATION PUMP (RIGHT OF RADIATOR) FRONT SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT REAR ENGINE COMPT) FUSE 23 FUSE 5 COMPARTMENT PREFUSE BOX (RIGHT REAR ENGINE COMPT) GRN WIRE GRN/WHT WIRE HOT AT ALL TIMES HOT W/ ENGINE CIRCUIT 87 RELAY ENERGIZED ME-SFI (ME) CONTROL UNIT (RIGHT REAR OF ENGINE COMPT) RED WIRE RED/BLK WIRE RED/GRN WIRE

1 2 3 4 30 31 CAN-A L CAN-A H 15 16 CAN-B H CAN-B L 23 16 24 LIN BUS LIN BUS 41 54 CAN E H CAN E L 5 4 6 LIN-DATA LIN (-) LIN (+) AAC (KLA) CONTROL UNIT (CENTER DASH) 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 ENGINE ENGINE CONTROLS SYSTEM FRONT SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT REAR ENGINE COMPT) FUSE 108 FUSE 23 FUSE 5 COMPARTMENT PREFUSE BOX (RIGHT REAR ENGINE COMPT) GRN WIRE GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE GRY/BLU WIRE GRY/GRN WIRE GRY/ORG WIRE HEATED WINDSHIELD CONTROL UNIT (W/ SPECIAL PROTECTION) HOT AT ALL TIMES HOT W/ ENGINE CIRCUIT 87 RELAY ENERGIZED LEFT B-PILLAR AIR DISTRIBUTION ACTUATOR MOTOR (UNDER LEFT FRONT SEAT) LEFT DUOVALVE LEFT REAR CENTER AIR OUTLET 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 HEATING SYSTEM SUPPLY UNIT REAR BLOWER MOTOR (IN REAR OF CENTER CONSOLE) REAR EVAPORATOR TEMPERATURE SENSOR (REAR OF CENTER CONSOLE) REAR REFRIGERANT SHUT-OFF VALVE (LEFT FRONT WHEELHOUSE) RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/WHT WIRE RIGHT B-PILLAR AIR DISTRIBUTION ACTUATOR MOTOR (UNDER RIGHT FRONT SEAT) RIGHT DUOVALVE RIGHT REAR AIR CONDITIONING HEATER EXCHANGER TEMPERATURE SENSOR RIGHT REAR CENTER AIR OUTLET ACTUATOR MOTOR 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 CAN-C H CAN-C L NC 87 31 NC 1 2 3 4 5 CAN C L CAN C H AUX-SPLY 30 31 6 3 COMPUTER DATA LINES SYSTEM CAN-A H CAN-A L BLK WIRE BLU WIRE BLU/WHT WIRE BRAKE CTRL SOL VLV (VGS) BRN WIRE BRN/YEL WIRE CAN B L CAN B H CAN C H CAN C L CLUTCH CLUTCH CTRL CTRL SOL VLV SOL VLV (VGS) (VGS) COMPUTER DATA LINES COMPUTER DATA LINES SYSTEM ELECTRIC CONTROL UNIT (VGS) ENGINE FRONT CENTRAL OPERATING UNIT FUSE 28 FUSE 6 COMPARTMENT PREFUSE BOX (RIGHT REAR MRI ENGINE COMPARTMENT) GEAR DISPLAY CAN-F-L CAN-F-H HOT AT ALL TIMES HOT W/ CHASSIS CIRCUIT 87 RELAY ENERGIZED HOT W/ CHASSIS CIRCUIT 87 RELAY ENERGIZED FUSE 32 INSTRUMENT CLUSTER INTELLIGENT SERVO MODULE FOR DIRECT SELECT (TRANSMISSION HOUSING) OUTPUT SPEED SENSOR (VGS) RED WIRE RED/GRN WIRE RED/VIO WIRE SELECTION RANGE SENSOR (VGS) SYSTEM TORQUE CONVERTER LOCKUP CLUTCH CTRL SOL VLV (VGS) TRANSMISSION MODE DISPLAY TRANSMISSION MODES BUTTON TRANSMISSION OIL TEMP SENSOR (VGS) TURBINE INTERNAL SPEED SPEED SENSOR SENSOR (VGS) (VGS) YEL WIRE YEL/RED WIRE YEL/WHT WIRE

BLK WIRE BLK/BLU WIRE BLK/BRN WIRE BLK/GRY WIRE BLK/PNK WIRE BLK/RED WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/RED WIRE BLU/VIO WIRE BLU/WHT WIRE BLU/YEL WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/WHT WIRE BRN/YEL WIRE DOWNSTREAM TWC (KAT) (UNDER LEFT FRONT OF VEHICLE) DOWNSTREAM TWC (KAT) (UNDER RIGHT FRONT OF VEHICLE) ENGINE EV 4 EV 6 EV 7 GRN WIRE GRN/BLK WIRE GRN/BRN WIRE GRN/GRY WIRE GRN/PNK WIRE GRN/RED WIRE GRN/WHT WIRE GRN/YEL WIRE GRY/ORG WIRE GRY/WHT WIRE INTAKE MANIFOLD TUMBLE FLAP SWITCHOVER VALVE ME-SFI (ME) CONTROL UNIT (RIGHT REAR OF ENGINE COMPT) NCA WIRE O S KW OUT OIL LEVEL SWITCH PNK/BLK WIRE PNK/BLU WIRE PNK/GRN WIRE PNK/GRY WIRE PNK/WHT WIRE PNK/YEL WIRE RED WIRE RED/BLK WIRE RED/GRN WIRE RED/GRY WIRE RED/YEL WIRE STARTING/ CHARGING SYSTEM VARIABLE INTAKE MANIFOLD SWITCHOVER VALVE (TOP LEFT FRONT OF VIO WIRE VIO/BLK WIRE VIO/BRN WIRE VIO/GRN WIRE VIO/GRY WIRE VIO/WHT WIRE VIO/YEL WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/BRN WIRE WHT/GRN WIRE WHT/PNK WIRE WHT/RED WIRE WHT/VIO WIRE WHT/YEL WIRE YEL WIRE YEL/BLK WIRE YEL/BLU WIRE YEL/BRN WIRE YEL/GRN WIRE YEL/GRY WIRE YEL/PNK WIRE YEL/RED WIRE YEL/VIO WIRE