Mercedes-Benz C-class W204/S204 (2006-2011) red/blk Wiring diagrams

ABS IND. BLK WIRE BLK/RED WIRE BLS_H BLS_L BLS_M BLU/BLK WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/WHT WIRE BRAKE FLUID, PARKING BRAKE WARNING IND BRN WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/VIO WIRE CAN E H CAN E H CAN E L CAN E L CAN H H CAN H L COMPUTER DATA LINES SYSTEM DF HR M DF HR S DF VL S DF VL M 31 ECO 31 ELECTRONIC STABILITY PROGRAM CONTROL UNIT (LEFT FRONT OF ENGINE COMPT) ESP WARNING LAMP IND FRONT AXLE BRAKE PRESSURE SENSOR FRONT AXLE SWITCH OVER VALVE FRONT PRESSURE SENSOR FRONT SAM CONTROL MODULE W/ FUSE/ RELAY MODULE FUSE 20 FUSE 1 FUSE 14 FUSE 21 GRN WIRE GRN/WHT WIRE GRN/YEL WIRE HIGH PRESSURE, RETURN PUMP MOTOR HOT AT ALL TIMES HOT IN ON OR START INSTRUMENT CLUSTER LEFT FRONT AXLE RPM SENSOR (ON LEFT FRONT STEERING KNUCKLE ASSEMBLY) LEFT FRONT PRESSURE REGULATOR VALVE (HOLD) LEFT FRONT PRESSURE REGULATOR VALVE (RELEASE) LEFT REAR AXLE RPM SENSOR (ON LEFT REAR WHEEL HUB ASSEMBLY) LEFT REAR PRESSURE REGULATOR VALVE (HOLD) LEFT REAR PRESSURE REGULATOR VALVE (RELEASE) NCA WIRE PML 30 DF VR M DF VR S BLA DF HL S DF HL M PNK/BLU WIRE PNK/GRN WIRE PNK/WHT WIRE REAR PRESSURE SENSOR REAR SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT SIDE OF TRUNK/CARGO AREA) RED/BLK WIRE RED/BLU WIRE RED/BRN WIRE RED/GRN WIRE RED/GRY WIRE RED/VIO WIRE RED/WHT WIRE RIGHT FRONT AXLE RPM SENSOR (ON RIGHT FRONT STEERING KNUCKLE ASSEMBLY) RIGHT FRONT PRESSURE REGULATOR VALVE (HOLD) RIGHT FRONT PRESSURE REGULATOR VALVE (RELEASE) RIGHT REAR AXLE RPM SENSOR (ON RIGHT REAR WHEEL HUB ASSEMBLY) RIGHT REAR PRESSURE REGULATOR VALVE (HOLD) RIGHT REAR PRESSURE REGULATOR VALVE (RELEASE) TAXIMETER ELECTRICAL CONNECTOR TRACTION SYSTEM HYDRAULIC UNIT VIO WIRE VIO/WHT WIRE WHT GRN/ WIRE WHT WIRE YAW RATE, LATERAL, LONGITUDINAL ACCELERATION SENSOR (UNDER DRIVER'S SEAT)

12 13 17 18 CAN E L CAN E H CAN B L CAN B H 2 3 1 31 LIN 1 30 30 31 5 19 CAN-B H CAN-B L EWD 4 3 2 1 S_GB 30 6 5 4 3 2 1 ASS OFF ASS LED 31 6 5 4 3 2 1 OFF INTERIOR PROTECTION SWITCH ALARM SIREN (W/ ANTI-THEFT ALARM SYSTEM) (REAR OF RIGHT FRONT WHEELWELL) ANTI-THEFT ALARM SYSTEM INDICATOR LAMP INSTRUMENT PANEL SWITCH GROUP BLK WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/PNK WIRE BRN WIRE BRN/BLK WIRE BRN/GRY WIRE BRN/RED WIRE CAN B L CAN B H CAN-B H CAN-B L COMPUTER DATA LINES SYSTEM DISPLAY EMERGENCY CALL SYSTEM CONTROL UNIT (CENTER FRONT OF TRUNK) ENGINE HOOD ANTI-THEFT ALARM SYSTEM SWITCH (W/ ANTI-THEFT ALARM SYSTEM) FAN RELAY MODULE FRONT ELECTRICAL PREFUSE BOX (AT RIGHT REAR OF ENGINE COMPT) FUSE 105 FUSE 17 FUSE 18 FUSE 46 FUSE 89 FUSE 90 GRN WIRE GRN/WHT WIRE GRY/YEL WIRE HORNS SYSTEM HOT AT ALL TIMES HOT W/ QUIESCENT CURRENT CUTOUT RELAY ENERGIZED INFO INFO LED INSTRUMENT CLUSTER INTERIOR PROTECTION RECEIVER INTERIOR PROTECTION, TOW-AWAY PROTECTION CONTROL UNIT (IF EQUIPPED) IRS LED IRS-OFF LEFT INTERIOR PROTECTION TRANSMITTER LEFT REAR WINDOW GLASS BREAKAGE SENSOR NCA WIRE OF TRUNK) OFF TOWING SENSOR BUTTON 8 7 6 4 3 2 SOS LED WS LED INFO LED WS INFO SOS REAR SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT SIDE OF TRUNK/CARGO AREA) REAR WINDOW GLASS BREAKAGE SENSOR RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRY WIRE RIGHT INTERIOR PROTECTION TRANSMITTER RIGHT REAR WINDOW GLASS BREAKAGE SENSOR SOS SOS LED W/ MODEL CODE 204.2 WHT WIRE WS LED YEL WIRE YEL/RED WIRE YEL/VIO WIRE

1 2 3 4 31 30 GND DATA 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 CAN B H CAN B L AIR RECIRCULATION MODE BUTTON AUTOMATIC AIR CONDITIONING CONTROL, OPERATING UNIT BLK/BLU WIRE BLK/ORG WIRE BLK/RED WIRE BLU WIRE BLU/BLK WIRE BRN WIRE BRN/BLK WIRE BRN/GRN WIRE BRN/RED WIRE COMBUSTION ENGINE, A/C WITH INTEGRATED CONTROL FAN MOTOR COMPUTER DATA LINES SYSTEM ENGINE CONTROLS SYSTEM FUSE 105 FUSE 119 GND (-) 31 GRN/BLU WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT W/ QUIESCENT CURRENT CUTOUT RELAY ENERGIZED INTERIOR FUSE BOX (BEHIND LEFT END OF DASH) LUES PURGE CONTROL VALVE REAR BLOWER MOTOR REAR WINDOW HEATER BUTTON RED WIRE RED/BLK WIRE RED/VIO WIRE REG SIG NTC DATA FOND GND DATA MRM THS TMOT VIO/WHT WIRE

BLK/RED WIRE BLU/BLK WIRE BLU/GRN WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE COOLANT THERMOSTAT DATA FRONT SAM CONTROL UNIT W/ FUSE, RELAY FUSE FUSE 12 GRY/BLK WIRE GRY/BLU WIRE HOT W/ ENGINE CIRCUIT 87 RELAY ENERGIZED INTERIOR TEMPERATURE SENSOR (IN DASH, RIGHT OF STEERING COLUMN) INTERIOR TEMPERATURE SENSOR W/ INTEGRATED FAN LEFT CENTER AIR OUTLET SYMBOL ILLUMINATION LEFT FRONT SIDE AIR OUTLET SYMBOL ILLUMINATION MODULE (LEFT REAR OF ENGINE COMPT) NCA WIRE NTC- OVERHEAD CONTROL PANEL ELECTRONICS (W/ OVERHEAD CONTROL PANEL W/O CAN) REAR AIR OUTLET SYMBOL ILLUMINATION REAR AUTOMATIC AIR CONDITIONING OPERATING UNIT RED WIRE RED/BLK WIRE RED/BRN WIRE RED/GRN WIRE RED/VIO WIRE REFRIGERANT COMPRESSOR REFRIGERANT PRESSURE SENSOR (AT BOTTOM LEFT SIDE OF RADIATOR CONDENSER) RIGHT CENTER AIR OUTLET SYMBOL ILLUMINATION RIGHT FRONT SIDE AIR OUTLET SYMBOL ILLUMINATION SOLID STATE VIO/WHT WIRE W/ AIR OUTLET SYMBOL ILLUMINATION

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 CAN B H CAN B L 30 GND 31 AIR RECIRCULATION MODE BUTTON AUTOMATIC AIR CONDITIONING CONTROL, OPERATING UNIT BLK WIRE BLOWER MOTOR BLOWER REGULATOR A/C HOUSING BLU WIRE BLU/BLK WIRE BRN WIRE BRN/BLK WIRE BRN/RED WIRE COMPUTER DATA LINES SYSTEM DATA EVAPORATOR TEMPERATURE SENSOR (UNDER RIGHT SIDE OF DASH) FUSE 100 FUSE 105 FUSE 119 HOT AT ALL TIMES HOT W/ QUIESCENT CURRENT CUTOUT RELAY ENERGIZED INTERIOR FUSE BOX (BEHIND LEFT END OF DASH) REAR BLOWER MOTOR REAR WINDOW HEATER BUTTON RED WIRE RED/BLK WIRE RED/BLU WIRE RED/VIO WIRE SIG SIG NTC DATA FOND GND DATA SUN SENSOR (TOP CENTER OF DASH) VIO/WHT WIRE WHT WIRE WHT/BLU WIRE YEL WIRE YEL/BLU WIRE

BLU/BLK WIRE BRN WIRE BRN/BLK WIRE DATA DEW POINT SENSOR DIFFUSE FLAP ACTUATOR MOTOR GRY/BLU WIRE LEFT CENTER AIR OUTLET SYMBOL ILLUMINATION LEFT CENTER OUTLET FLAP ACTUATOR MOTOR LEFT FRONT SIDE AIR OUTLET SYMBOL ILLUMINATION NCA WIRE RAM AIR FLAP ACTUATOR MOTOR REAR AUTOMATIC AIR CONDITIONING OPERATING UNIT RED WIRE RED/BLK WIRE RED/VIO WIRE RIGHT CENTER AIR OUTLET SYMBOL ILLUMINATION RIGHT CENTER OUTLET FLAP ACTUATOR MOTOR RIGHT DEFROSTER VENT FLAP ACTUATOR MOTOR RIGHT FOOTWELL FLAP ACTUATOR MOTOR RIGHT FRONT SIDE AIR OUTLET SYMBOL ILLUMINATION VIO/GRN WIRE VIO/RED WIRE VIO/WHT WIRE W/ AIR OUTLET SYMBOL ILLUMINATION WHT/BLK WIRE WHT/BLU WIRE WHT/BRN WIRE WHT/GRY WIRE WHT/RED WIRE WHT/VIO WIRE WHT/YEL WIRE YEL WIRE

1 2 3 GND NTC BLK/BLU WIRE BLK/ORG WIRE BLK/RED WIRE BLU/BLK WIRE BLU/GRN WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/GRN WIRE COMBUSTION ENGINE, A/C W/ INTEGRATED CONTROL FAN MOTOR COOLANT CIRCULATION PUMP COOLANT THERMOSTAT EMISSIONS SENSOR ENGINE CONTROLS SYSTEM FRONT SAM CONTROL UNIT W/ FUSE, RELAY FUSE 12 FUSE 22 GRN/BLU WIRE GRY/BLK WIRE GRY/BLU WIRE HOT W/ ENGINE CIRCUIT 87 RELAY ENERGIZED INTERIOR TEMPERATURE SENSOR W/ INTEGRATED FAN LEFT FOOTWELL FLAP ACTUATOR MOTOR LUES MODULE (LEFT REAR OF ENGINE COMPT) OVERHEAD CONTROL PANEL ELECTRONICS PURGE CONTROL VALVE REAR BLEND AIR FLAP ACTUATOR MOTOR RED WIRE RED/BLK WIRE RED/BRN WIRE RED/GRN WIRE RED/VIO WIRE RED/WHT WIRE RED/YEL WIRE REG SIG SOLID STATE THS TMOT VIO/WHT WIRE WHT/GRN WIRE WHT/VIO WIRE WHT/YEL WIRE

1 2 3 4 31 (+) LIN 2 1 2 3 4 5 6 (+) 30 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 CAN-G H CAN-G L 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 LWR 1 2 3 4 5 6 ANST ANST 15 1 2 3 4 5 LIN 1 30 SIG 31 EDW 31 KHD 31 NTC LIN 2 GND 31 SIG AT 31 31 AIR CONDITIONING SYSTEM AIR CONDITIONING SYSTEM WIPER/WASHER SYSTEM WIPER/WASHER SYSTEM BFS CRASH BLK/GRN WIRE BLK/GRY WIRE BLK/PNK WIRE BLK/WHT WIRE BLU/BLK WIRE BLU/GRN WIRE BLU/WHT WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/ORG WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE CAN E H CAN E L CAN-G H CAN-G L COMPUTER DATA LINES SYSTEM EXTERIOR LIGHTS SYSTEM COMPUTER DATA LINES SYSTEM FRONT FRONT SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) GND NTC (+) GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GRN/WHT WIRE GRY WIRE GRY/BLU WIRE GRY/WHT WIRE GRY/YEL WIRE HEADLIGHTS SYSTEM HEADLIGHTS SYSTEM AIR CONDITIONING SYSTEM AIR CONDITIONING SYSTEM HOT AT ALL TIMES FUSE 89 INSTRUMENT CLUSTER SYSTEM INSTRUMENT CLUSTER SYSTEM ENGINE CONTROLS SYSTEM INTERIOR LIGHTS SYSTEM SUPPLEMENTAL RESTRAINTS SYSTEM LWR LWR SIG NCA WIRE PNK/GRY WIRE PNK/RED WIRE PNK/WHT WIRE PNK/YEL WIRE POWER DISTRIBUTION SYSTEM RED WIRE RED/BLK WIRE RED/BLU WIRE RED/BRN WIRE RED/GRN WIRE RED/GRY WIRE RED/VIO WIRE RED/WHT WIRE RED/YEL WIRE RFL (+) SIG SUPPLEMENTAL RESTRAINTS SYSTEM TRANSMISSIONS SYSTEM EXTERIOR LIGHTS SYSTEM TRANSMISSIONS SYSTEM VIO/WHT WIRE WHT/RED WIRE WIPER/WASHER SYSTEM YEL WIRE YEL/BLU WIRE YEL/BRN WIRE YEL/WHT WIRE

30 30 (+) 31 WH (DATA) WH (+) WH (-) 58 SL-L SL-R (+) PNK WIRE 7 8 9 10 11 12 13 (+) ANST ANTI-THEFT SYSTEM SOUND SYSTEMS BLK WIRE BLK/BLU WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/PNK WIRE BLK/RED WIRE BLK/VIO WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/BRN WIRE BLU/GRN WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/PNK WIRE BRN/RED WIRE BRN/YEL WIRE BSL-R BSL-L ZV CAN B L CAN B H (+) (+) SIG LIN CAN-B H CAN-B L COMPUTER DATA LINES SYSTEM CRUISE CONTROL SYSTEM DEFOGGER SYSTEM DOOR LOCKS SYSTEM DOOR LOCKS SYSTEM DOOR LOCKS SYSTEM ENGINE CONTROLS SYSTEM ANTI-THEFT SYSTEM EXTERIOR LIGHTS SYSTEM EXTERIOR LIGHTS SYSTEM INTERIOR LIGHTS SYSTEM EXTERIOR LIGHTS SYSTEM EXTERIOR LIGHTS SYSTEM TRUNK, TAILGATE, FUEL DOORS SYSTEM FUSE GRN WIRE GRN/BLU WIRE GRN/WHT WIRE GRN/YEL WIRE GRY/BLU WIRE GRY/PNK WIRE GRY/VIO WIRE GRY/YEL WIRE HFE HFE SIG SIG SIG HOT W/ QUIESCENT CURRENT CUTOUT RELAY ENERGIZED INSTRUMENT CLUSTER SYSTEM POWER DISTRIBUTION SYSTEM INSTRUMENT CLUSTER, ANTI-THEFT SYSTEMS INSTRUMENT CLUSTER, ANTI-THEFT SYSTEMS INSTRUMENT CLUSTER, ANTI-THEFT SYSTEMS INSTRUMENT CLUSTER, ENGINE CONTROLS SYSTEMS INTERIOR LIGHTS SYSTEM INTERIOR LIGHTS SYSTEM PNK BSL-L BSL-R SIG WIRE PNK/RED WIRE POWER DISTRIBUTION SYSTEM REAR SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT SIDE OF TRUNK/CARGO AREA) RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/GRY WIRE RED/VIO WIRE RED/WHT WIRE RED/YEL WIRE RFL-R RFL-L NSL-R NSL-L RSS EIN RSS AUS SEATS SYSTEM SIG SIG EDM SIG TG R TG L BLA GSS HR GSS HL SIG GSS HM SIG SIG SIG SIG SIG SIG SIG SOUND SYSTEMS SEATS SYSTEM SUPPLEMENTAL RESTRAINTS SYSTEM SYSTEM ANTI-LOCK BRAKES SYSTEM TRUNK, TAILGATE, FUEL DOORS SYSTEM TRUNK, TAILGATE, FUEL DOORS SYSTEM STARTING/CHARGING SYSTEM VIO/BLU WIRE WH (DATA) WH (+) WHT/BLU WIRE WHT/YEL WIRE WIPER/WASHER SYSTEM YEL WIRE ZV ANT

3 4 5 6 7 8 (-) (+) BLK/GRY WIRE BLK/RED WIRE BLK/VIO WIRE BLK/WHT WIRE BLK/YEL WIRE BRN WIRE CRUISE CONTROL SYSTEM DOOR LOCKS SYSTEM GRN WIRE PNK/BLK WIRE PNK/GRN WIRE PNK/RED WIRE PNK/YEL WIRE POWER DISTRIBUTION SYSTEM POWER DISTRIBUTION SYSTEM SEATS SYSTEM REAR SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT SIDE OF TRUNK/CARGO AREA) RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/VIO WIRE RED/WHT WIRE RED/YEL WIRE SEATS SYSTEM SEATS SYSTEM SOUND SYSTEMS WHT WIRE