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

ATTENTION ASSIST SENSOR BASIC BASIC PREMIUM BAV A BLA DF HL S DF HL M MP S BLS L BLK WIRE BLK/BRN WIRE BLK/GRY WIRE BLK/ORG WIRE BLK/PNK WIRE BLK/RED WIRE BLK/WHT WIRE BLK/YEL WIRE BLS H LS A BLS M LRWS M CLU M BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/ORG WIRE BLU/YEL WIRE BRN WIRE BRN/YEL WIRE CAN E H CAN E L COMPUTER DATA LINES SYSTEM DF HR M DF HR S PML A FRONT AXLE BRAKE PRESSURE SENSOR FRONT AXLE INLET SOLENOID VALVE FRONT AXLE SWITCHOVER SOLENOID VALVE FUSE FUSE (RIGHT REAR ENGINE COMPT) GRN WIRE GRN/BRN WIRE GRN/GRY WIRE GRN/PNK WIRE GRN/RED WIRE GRN/WHT WIRE GRN/YEL WIRE HIGH PRESSURE, RETURN PUMP HOT AT ALL TIMES HOT AT ALL TIMES ENGINE COMPARTMENT PREFUSE BOX LEFT FRONT AXLE SOLENOID VALVE (HOLD) LEFT FRONT PRESSURE SENSOR LEFT FRONT WHEEL SPEED SENSOR (AT LEFT FRONT WHEEL) LEFT INSTRUMENT PANEL FUSE BOX (UNDER LEFT SIDE DASH COVER) LEFT REAR AXLE SOLENOID VALVE (HOLD) LEFT REAR AXLE SOLENOID VALVE (RELEASE) LEFT REAR PRESSURE SENSOR RIGHT FRONT AXLE SOLENOID VALVE (RELEASE) LRWS SIG NCA WIRE PML A CAN H H CAN H L PNK WIRE PREMIUM REAR AXLE INLET SOLENOID VALVE REAR AXLE SWITCHOVER SOLENOID VALVE RED WIRE RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE RIGHT FRONT AXLE SOLENOID VALVE (HOLD) RIGHT FRONT RIGHT REAR AXLE PRESSURE SOLENOID VALVE (RELEASE) SENSOR RIGHT REAR AXLE SOLENOID VALVE (HOLD) RIGHT REAR LEFT FRONT AXLE PRESSURE SOLENOID VALVE (RELEASE) SENSOR SPS (PML) SOLENOID VALVE STOP LAMP SWITCH TRACTION SYSTEM HYDRAULIC UNIT VIO WIRE VIO/WHT WIRE W/ BASIC W/ PREMIUM W/ W/ BASIC PREMIUM WHT WIRE WHT/YEL WIRE

ABS/MIL IND BAS BRAKE BOOSTER BAS RELEASE SWITCH BAS SOLENOID VALVE BLK/BRN WIRE BLK/GRY WIRE BLK/ORG WIRE BLK/PNK WIRE BLK/RED WIRE BLK/WHT WIRE BLU/BLK WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/YEL WIRE BRAKE FLUID INDICATOR SWITCH (LEFT REAR OF BRAKE FLUID WARNING LAMP IND BRN WIRE BRN/WHT WIRE BRN/YEL WIRE CAN H H CAN H L CAN-F L CAN-F H COMPUTER DATA LINES SYSTEM DIAPHRAGM TRAVEL SENSOR ENGINE COMPT) ESP WARNING LAMP IND FRONT SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT REAR ENGINE COMPT) FUSE GRN/PNK WIRE GRN/YEL WIRE HOT AT ALL TIMES INSTRUMENT CLUSTER LEFT REAR WHEEL SPEED SENSOR (AT LEFT REAR WHEEL) NCA WIRE PNK WIRE POWER DISTRIBUTION SYSTEM RED/YEL WIRE RIGHT FRONT WHEEL SPEED SENSOR (AT RIGHT FRONT WHEEL) RIGHT REAR WHEEL SPEED SENSOR (AT RIGHT REAR WHEEL) SIG VIO WIRE VIO/WHT WIRE WHT WIRE WHT/YEL WIRE YAW RATE, LATERAL, LONGITUDINAL ACCELERATION SENSOR YEL WIRE YEL/WHT WIRE

1 2 3 4 CAN-B L CAN-B H 31 30 12 13 CAN-F L CAN-F H 15 14 13 12 15 CAN-B L CAN-B H 42 55 26 CAN-C H CAN-C L 6 12 CAN-B L CAN-B H 6 5 4 DATA 9 22 25 21 HD-AS ALARM SIREN W/AUXILIARY BATTERY (LEFT FRONT WHEELHOUSE) ATA (EDW) FUNCTION INDICATOR BLU WIRE BLU/WHT WIRE BRN WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/ORG WIRE BRN/PNK WIRE BRN/RED WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM DRIVER DOOR INFRARED SENSOR ENGINE HOOD OPEN/ CLOSED SWITCH (ATA) FUEL FILLER FLAP MOTOR FUSE 29 FUSE 80 GRN WIRE GRY WIRE GRY/BLU WIRE HEADLIGHTS SYSTEM HORNS SYSTEM HOT AT ALL TIMES HYBRID ENGINE HOOD CONTACT SWITCH (3.5L) INSTRUMENT CLUSTER LEFT FRONT DOOR CONTROL MODULE (IN LEFT FRONT DOOR) LEFT REAR FOOTWELL ME-SFI (ME) CONTROL UNIT (RIGHT REAR OF ENGINE COMPT) NCA WIRE PNK WIRE PNK/RED WIRE REAR SAM CONTROL MODULE W/ FUSE, RELAY MODULE (CENTER TRUNK) RED WIRE RED/BLK WIRE RED/BLU WIRE SPIEGEL TRUNK LID CONTACT SWITCH TRUNK LID EMERGENCY RELEASE SWITCH TRUNK LID EXTERNAL OPERATION SWITCH UPPER CONTROL PANEL CONTROL MODULE VIO WIRE W/ HYBRID DERIVE WHT WIRE YEL WIRE YEL/WHT WIRE

AAC (KLA) CONTROL UNIT (CENTER DASH) BLK WIRE BLK/BRN WIRE BLK/YEL WIRE BLU WIRE BLU/GRN WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/PNK WIRE BRN/RED WIRE COMPUTER DATA LINES SYSTEM DATA FRONT CENTER AIR OUTLET POTENTIOMETER FRONT SAM CONTROL MODULE W/ FUSE/ RELAY MODULE FUSE 23 FUSE 31 FUSE 50 FUSE 54 (LEFT REAR ENGINE COMPT) GRN WIRE GRY/GRN WIRE GRY/RED WIRE GRY/VIO WIRE HOT AT ALL TIMES HOT W/ CHASSIS CIRCUIT 87 RELAY ENERGIZED HOT W/ ENGINE CIRCUIT 87 RELAY ENERGIZED LEFT SIDE AIR OUTLET POTENTIOMETER LIN BUS LIN GND LIN DATA LIN-BUS CAN-B H CAN-B L LIN-BUS LIN-BUS PNK 31 SIG WIRE PNK PNK WIRE PNK WIRE PNK/BLK WIRE PNK/BLU WIRE PNK/GRY WIRE PNK/YEL WIRE REAR CENTER AIR OUTLET POTENTIOMETER RED WIRE RED/BLK WIRE RED/GRN WIRE RED/GRY WIRE RED/WHT WIRE REFRIGERANT PRESSURE SENSOR (LEFT FRONT WHEELHOUSE) RIGHT REAR FOOTWELL RIGHT SIDE AIR OUTLET POTENTIOMETER VIO WIRE WHT/BLU WIRE YEL WIRE YEL/BLU WIRE YEL/GRN WIRE

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 HV + HV - INTERLOCK OUT INTERLOCK IN BATTERY MANAGEMENT SYSTEM CONTROL UNIT (RIGHT REAR BLK/YEL WIRE BLU WIRE BLU/YEL WIRE BRN WIRE BRN/BLK WIRE CAN-I H CAN-I L INTERLOCK IN INTERLOCK OUT COMPUTER DATA LINES SYSTEM DC/DC CONVERTER CONTROL MODULE (RIGHT FRONT WHEELHOUSE) ELECTRIC REFRIGERANT COMPRESSOR (LEFT FRONT ENGINE) ENGINE COMPT) ENGINE COOLANT CIRCULATION PUMP (RIGHT OF RADIATOR) FRESH AIR/ RECIRCULATED AIR FLAP ACTUATOR MOTOR (RIGHT SIDE OF HVAC UNIT) FUSE 1 GRN WIRE GRY/GRN WIRE GRY/RED WIRE GRY/VIO WIRE HEATER BOOSTER CONNECTOR HIGH VOLTAGE FUSE BOX HOT AT ALL TIMES ENGINE COMPARTMENT FUSE 5 PREFUSE BOX (RIGHT REAR ENGINE COMPT) HOT AT ALL TIMES INTERIOR PREFUSE FUSE 7 BOX (RIGHT FRONT FOOTWELL) LEFT CENTER AIR FLAP ACTUATOR MOTOR (LEFT CENTER OF HVAC UNIT) LEFT DEFROSTER VENT FLAP ACTUATOR MOTOR (TOP LEFT SIDE OF HVAC UNIT) LEFT FOOTWELL FLAP ACTUATOR MOTOR (LOWER LEFT CENTER OF HVAC UNIT) LEFT SIDE OUTLET FLAP ACTUATOR MOTOR (TOP LEFT CENTER OF HVAC UNIT) LOWER LEFT BLENDING AIR FLAP ACTUATOR MOTOR (LOWER LEFT SIDE OF HVAC UNIT) LOWER RIGHT BLENDING AIR FLAP ACTUATOR MOTOR (LOWER RIGHT SIDE OF HVAC UNIT) NCA WIRE PNK WIRE PNK/BLU WIRE PNK/GRN WIRE PTC HEATER BOOSTER RED WIRE RED/BLK WIRE RED/GRN WIRE RIGHT CENTER AIR FLAP ACTUATOR MOTOR (RIGHT CENTER OF HVAC UNIT) RIGHT DEFROSTER VENT FLAP ACTUATOR MOTOR (TOP RIGHT SIDE OF HVAC UNIT) RIGHT FOOTWELL FLAP ACTUATOR MOTOR (LOWER RIGHT CENTER OF HVAC UNIT) RIGHT SIDE OUTLET FLAP ACTUATOR MOTOR (TOP RIGHT CENTER OF HVAC UNIT) UPPER LEFT BLENDING AIR FLAP ACTUATOR MOTOR UPPER RIGHT BLENDING AIR FLAP ACTUATOR MOTOR VIO WIRE WHT/BLK WIRE WHT/BLU 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

BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLK/VIO WIRE BLU WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE FRESH AIR SYSTEM BUZZER EMERGENCY WARNING BUZZER (CENTER OF DASH) FRESH AIR SYSTEM DIAGNOSTIC INTERFACE CONNECTOR FRESH AIR SYSTEM EMERGENCY CONTROL UNIT FRESH AIR SYSTEM EMERGENCY PRESSURE FUSE GRN WIRE GRN/BRN WIRE GRN/WHT WIRE GRY/ORG WIRE GRY/PNK WIRE HOT AT ALL TIMES IRRITANT GAS SYSTEM SOLENOID VALVE IRRITANT GAS SYSTEM SOLENOID VALVE DOUBLE CONTACT RELAY LEFT EXHAUST AIR FLAP MOTOR (LEFT SIDE OF TRUNK) LEFT EXHAUST AIR FLAP MOTOR POLARITY- LEFT EXHAUST AIR FLAP MOTOR POLARITY-REVERSING RELAY LEFT REAR FOOTWELL MEDIUM RESERVOIR SOLENOID VALVE OVERVOLTAGE PROTECTION DIODE OXYGEN CYLINDER PRESSURE SENSOR (LEFT FRONT OF TRUNK) REAR FUSE BOX I RED/BLK WIRE RED/BLU WIRE RED/YEL WIRE REVERSING RELAY RIGHT EXHAUST AIR FLAP MOTOR (RIGHT SIDE OF TRUNK) RIGHT EXHAUST AIR FLAP MOTOR POLARITY- RIGHT EXHAUST AIR FLAP MOTOR POLARITY-REVERSING RELAY VIO WIRE VIO/RED WIRE W/O MEDIUM RESERVOIR SOLENOID VALVE W/ MEDIUM RESERVOIR SOLENOID VALVE WHT/BLU WIRE

BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLK/VIO WIRE BLK/YEL WIRE BRN WIRE BRN/WHT WIRE EMERGENCY VEHICLE SYSTEM FIRE EXTINGUISHING FIRE EXTINGUISHING SYSTEM CONTROL MODULE FRESH AIR SENSOR (RIGHT REAR OF ENGINE COMPT) FRESH AIR SYSTEM EMERGENCY ACTIVATE BUTTON FRESH AIR SYSTEM/FIRE EXTINGUISHING SYSTEM EMERGENCY ACTIVATE BUTTON FRONT SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT REAR ENGINE COMPT) GRN WIRE GRN/WHT WIRE GRY/BLU WIRE NCA WIRE PAS (GAS), SPECIAL SIGNAL SYSTEM CONTROL MODULE (LEFT FRONT OF TRUNK) RED WIRE RED/BLK WIRE SPECIAL VEHICLE MULTIFUNCTION CONTROL MODULE (SVMCM (MSS)) SYSTEM SWITCH VIO WIRE VIO/RED WIRE W/O MEDIUM RESERVOIR SOLENOID VALVE W/ MEDIUM RESERVOIR SOLENOID VALVE WINDSHIELD WASHER FLUID PUMP (RIGHT FRONT OF ENGINE COMPT)

2 3 4 5 DATA - DATA + 2 4 1 AUTHORITIES PERIPHERALS SEPARATION POINT 30 30 30 31 31 (+) (-) BLK WIRE BLK/GRY WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/RED WIRE BLU/WHT WIRE BRN WIRE BRN/BLK WIRE BRN/WHT WIRE FIRE EXTINGUISHING CONTROL MODULE FUSE 10 GRN WIRE GRN/RED WIRE GRY/BLU WIRE HOT AT ALL TIMES INTERIOR SPEAKER LEFT OUTSIDE MIRROR MICROPHONE LEFT REAR FOOTWELL MIKRO + MIKRO + MIKRO - NCA WIRE ORG/ WIRE OUTSIDE SPEAKER PAS (GAS), SPECIAL SIGNAL SYSTEM CONTROL MODULE (LEFT FRONT OF TRUNK) REAR FUSE BOX 1 RED WIRE RED/GRN WIRE RED/WHT WIRE RIGHT OUTSIDE MIRROR MICROPHONE WHT WIRE YEL WIRE YEL/BLK WIRE YEL/RED 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