Mercedes-Benz S-class W221 facelift (2009-2013) heated windshield control unit (w/ special protection) Wiring diagrams

41 54 COMPUTER CAN-E H CAN-E L DATA LINES SYSTEM A/C (KLA) 4-WAY SUN SENSOR A/C AIR RECIRCULATION UNIT BLOWER MOTOR AIR CONDITIONING CONNECTOR BLK WIRE BLK/BLU WIRE BLK/ORG WIRE BLK/PNK WIRE BLK/YEL WIRE BLOWER REGULATOR BLU WIRE BLU/GRN WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/GRY (OR BLK/PNK) WIRE BRN/GRY WIRE BRN/PNK WIRE COOLANT TEMPERATURE SENSOR (5.5L: FRONT OF ENGINE) ENGINE CONTROLS SYSTEM GRN WIRE GRN/VIO WIRE GRN/WHT WIRE GRY/GRN WIRE GRY/RED WIRE GRY/VIO WIRE HEATED WINDSHIELD CONTROL UNIT (W/ SPECIAL PROTECTION) LEFT B-PILLAR AIR DISTRIBUTION ACTUATOR MOTOR (UNDER LEFT FRONT SEAT) LEFT REAR CENTER AIR OUTLET ACTUATOR MOTOR ME-SFI (ME) CONTROL UNIT (RIGHT REAR OF ENGINE COMPT) PNK WIRE RED WIRE RED/BLK WIRE RED/GRN WIRE REFRIGERANT COMPRESSOR RIGHT B-PILLAR AIR DISTRIBUTION ACTUATOR MOTOR (UNDER RIGHT FRONT SEAT) RIGHT REAR CENTER AIR OUTLET ACTUATOR MOTOR VEHICLE INTERIOR HUMIDITY/ TEMPERATURE SENSOR VIO WIRE W/ REAR A/C W/O REAR A/C WHT/BLU WIRE YEL WIRE YEL/BLU WIRE YEL/GRN WIRE YEL/WHT 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