Mercedes-Benz C-class W204/S204/С204 facelift (2011-2015) grn/blk Wiring diagrams

1 2 3 4 5 6 HS(-) ML/K HS(+) ML+ HS(+) MK+ 1 2 CAN B L CAN B H 31 HS(+) HS(-) HS(+) 31 SIG MOT+ MOT- BLK WIRE BLK/BLU WIRE BLK/RED WIRE BLK/YEL WIRE BLU WIRE BLU/RED WIRE BRN WIRE BRN/GRN WIRE BRN/RED WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM CONTROL UNIT (IN DRIVER FRONT SEAT BACK) DRIVER SEAT BACKREST INCLI- NATION ADJUST- MENT MOTOR (IN DRIVER'S SEAT BACK) DRIVER SEAT CONTROL UNIT (UNDER DRIVER'S SEAT) DRIVER SEAT EASY-ENTRY SYSTEM LIMIT SWITCH (IF EQUIPPED) DRIVER SEAT FORE/AFT ADJUSTMENT MOTOR (UNDER DRIVER'S SEAT) DRIVER SEAT HEAD RESTRAINT ADJUSTMENT MOTOR (IN DRIVER FRONT SEAT BACK) DRIVER SEAT HEIGHT ADJUSTMENT MOTOR (UNDER DRIVER'S SEAT) DRIVER SEAT INCLINATION ADJUSTMENT MOTOR (UNDER DRIVER'S SEAT) DRIVER SEAT LUMBAR SUPPORT DRIVER SEAT LUMBAR SUPPORT ADJUSTMENT DRIVER SEAT LUMBAR SUPPORT ADJUSTMENT SWITCH GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GRN/VIO WIRE GRY WIRE GRY/BLK WIRE GRY/GRN WIRE GRY/YEL WIRE HV_MOT+ NV_MOT- NV_MOT+ LEFT FRONT SEAT ADJUSTMENT SWITCH GROUP (W/ FULLY ELECTRIC SEAT ADJUSTMENT) LV_MOT- LV_MOT+ HV_MOT- MLS H MLS V CAN-B L MLS CAN-B H RED WIRE RED/BLU WIRE RED/YEL WIRE STEERING COLUMN MEMORY CIRCUIT VIO WIRE VIO/WHT WIRE VIO/YEL WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE YEL WIRE YEL/BLK WIRE YEL/BLU WIRE

ADAPTIVE DAMPING CONTROL UNIT BLK/BLU WIRE BLK/YEL WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/YEL WIRE CAN E H CAN E L COMPUTER DATA LINES SYSTEM GND SIG GRN WIRE GRN/BLK WIRE GRN/WHT WIRE GRY/WHT WIRE H SIDE H SIDE GND L SIDE LEFT FRONT AXLE DAMPING VALVE UNIT LEFT FRONT BODY LATERAL ACCELERATION SENSOR NCA WIRE PNK/WHT WIRE RIGHT FRONT AXLE DAMPING VALVE UNIT RIGHT FRONT BODY LATERAL ACCELERATION SENSOR RIGHT FRONT LEVEL SENSOR (IN RIGHT FRONT WHEEL WELL) SIG SIG GND VIO/BLU WIRE WHT/BLU WIRE WHT/RED WIRE WHT/YEL WIRE YEL/BLU WIRE YEL/WHT WIRE

1 2 3 4 31 (+) LIN 2 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 KHD 31 NTC LIN 2 GND 31 SIG AT 31 31 AIR CONDITIONING SYSTEM AIR CONDITIONING SYSTEM AIR CONDITIONING SYSTEM HEADLIGHTS 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 WIRE BLU/BLK WIRE BLU/GRN WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/ORG WIRE BRN/WHT WIRE BRN/YEL WIRE CAN E H CAN E L CAN-G H CAN-G L COMPUTER DATA LINES SYSTEM COMPUTER DATA LINES, INSTRUMENT CLUSTER SYSTEMS CRUISE CONTROL SYSTEM ENGINE CONTROLS SYSTEM DIESEL ENGINE CONTROLS SYSTEM ENGINE CONTROLS SYSTEM ENGINE CONTROLS SYSTEM ENGINE CONTROLS SYSTEM EXTERIOR LIGHTS SYSTEM COMPUTER DATA LINES SYSTEM FRONT SAM CONTROL UNIT W/ FUSE, RELAY MODULE FRONT SAM CONTROL UNIT W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) FUSE 152 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 HOT W/ QUIESCENT CURRENT CUTOUT RELAY ENERGIZED FUSE INSTRUMENT CLUSTER SYSTEM INTERIOR LIGHTS SYSTEM SUPPLEMENTAL RESTRAINTS SYSTEM LWR LWR SIG NCA WIRE PNK/GRN 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/VIO WIRE RED/WHT WIRE RED/YEL WIRE SIG STARTING/CHARGING, ENGINE CONTROLS SYSTEMS TRANSMISSIONS SYSTEM VIO/WHT WIRE W/O ECO START/STOP FUNCTION WHT/RED WIRE WIPER/WASHER SYSTEM YEL WIRE YEL/BLU WIRE YEL/BRN WIRE YEL/WHT WIRE

1 2 3 4 5 6 7 8 9 10 11 12 PNK WIRE 15 GND 31 6 7 8 9 10 SIG AIR CONDITIONING SYSTEM ANTI-LOCK BRAKES SYSTEM ANTI-LOCK BRAKES SYSTEM COMPUTER DATA LINES SYSTEM BLK/BLU WIRE BLK/GRY WIRE BLK/RED WIRE BLK/WHT WIRE BLU WIRE BLU/RED WIRE BLU/WHT WIRE BRN WIRE BRN/BLK WIRE BRN/RED WIRE BRN/WHT WIRE CAN C H STR EKP CAN C L CAN C L CAN C H EKP CAN D H CAN D L CAN-D H CAN-D L COMPUTER DATA LINES SYSTEM COMPUTER DATA LINES SYSTEM EXTERIOR LIGHTS SYSTEM CRASH CAN G H CAN G L BBV HR BBV HL CAN B H CAN B L SIG ZV CRUISE CONTROL, ELECTRONIC POWER STEERING SYSTEMS ENGINE CONTROLS SYSTEM FRONT SAM CONTROL UNIT W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) GASOLINE GRN WIRE GRN/BLK WIRE GRN/WHT WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/PNK WIRE GRY/WHT WIRE GRY/YEL WIRE HEADLIGHTS SYSTEM HEADLIGHTS SYSTEM HEADLIGHTS SYSTEM HEADLIGHTS SYSTEM HORNS SYSTEM HORNS SYSTEM HEADLIGHTS SYSTEM HEADLIGHTS SYSTEM WIPER/WASHER SYSTEM INSTRUMENT CLUSTER SYSTEM PNK WIRE PNK/BLK WIRE PNK/BLU WIRE PNK/GRN WIRE PNK/RED WIRE PNK/WHT WIRE RED WIRE RED/BLK WIRE RED/BLU WIRE RED/BRN WIRE RED/GRN WIRE RED/GRY WIRE RED/WHT WIRE RED/YEL WIRE SIG SIG SIG STARTING/CHARGING SYSTEM TRANSMISSIONS SYSTEM VIO WIRE VIO/GRY WIRE VIO/WHT WIRE VIO/YEL WIRE WHT WIRE WHT/BLK WIRE WHT/RED WIRE YEL WIRE YEL/BLK WIRE YEL/BRN WIRE YEL/RED WIRE ZV ZV 31 ZV

3 2 CAN-C H CAN-C L 30 31 CAN-B H CAN-B L 4 3 2 1 30 31 CAN E H CAN E L 5 7 LWR BLK/BLU WIRE BLK/PNK WIRE BLU WIRE BLU/WHT WIRE BRN WIRE BRN/BLK WIRE BRN/RED WIRE COMBINATION SWITCH COMPT) COMPUTER DATA LINES SYSTEM EXTERIOR LIGHTS SWITCH FRONT ELECTRICAL PREFUSE BOX (AT RIGHT REAR OF ENGINE COMPT) FRONT FOG LAMP BUTTON FRONT FOG LAMP IND LAMP FRONT SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) FUSE FUSE 13 FUSE 29 FUSE 30 FUSE 5 GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GRN/WHT WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/PNK WIRE HEADLAMP FLASHER/ HIGH BEAM SWITCH HEADLAMP RANGE ADJUSTMENT ACTUATOR MOTOR HEADLAMP RANGE CONTROLLER (W/ HEADLAMP RANGE ADJUSTMENT FOR HALOGEN HEADLAMPS) HIGH BEAM IND LAMP HIGH BEAM LOW BEAM HEADLAMP RANGE ADJUSTMENT ACTUATOR MOTOR HOT AT ALL TIMES HOT W/ CIRCUIT 15 RELAY ENERGIZED HOT W/ QUIESCENT CURRENT CUTOUT RELAY ENERGIZED INSTRUMENT CLUSTER LEFT DAYTIME RUNNING LAMPS HEADLAMP (IF EQUIPPED) LEFT HIGH BEAM FOG LAMP (IF EQUI- PPED) LEFT REAR LAMP UNIT LEFT RIGHT FOG FRONT LAMP UNIT LAMP (IF EQUI- PPED) LOW BEAM LOW BEAM IND LAMP LOW BEAM SWITCH LWR LWR 31 MODULE CONTROL UNIT PARKING BRAKE INDICATOR SWITCH (ON PARKING BRAKE SUPPORT BRACKET) PNK/RED WIRE REAR FOG LAMP REAR FOG LAMP BUTTON REAR FOG LAMP IND LAMP 12 13 17 18 CAN E L CAN E H CAN B L CAN B H RED WIRE RED/BLU WIRE RED/WHT WIRE RIGHT DAYTIME RUNNING LAMPS HEADLAMP (IF EQUIPPED) RIGHT FRONT LAMP UNIT RIGHT REAR LAMP UNIT SIG SWITCH ILLUMINATION W/ ECO START/STOP FUNCTION W/ HEADLAMP RANGE ADJUSTMENT FOR HALOGEN HEADLAMPS W/O ECO START/STOP FUNCTION WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

3 7 LWR 9 10 CAN-B H CAN-B L BLK/BLU WIRE BLK/PNK WIRE BRN WIRE BRN/BLK WIRE BRN/RED WIRE COMPUTER DATA LINES SYSTEM FRONT ELECTRICAL PREFUSE BOX (AT RIGHT REAR OF ENGINE COMPT) FRONT FOG LAMP BUTTON FRONT SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) FUSE FUSE 152 FUSE 161 156 FUSE 4 FUSE 29 FUSE 30 FUSE 5 GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GRN/WHT WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/PNK WIRE HOT AT ALL TIMES HOT W/ QUIESCENT CURRENT CUTOUT RELAY ENERGIZED HOT W/CIRCUIT 15 RELAY ENERGIZED ILLUMINATION LEFT DAYTIME RUNNING LAMPS HEADLAMP (IF EQUIPPED) LWR 31 PARKING BRAKE INDICATOR SWITCH (ON PARKING BRAKE SUPPORT BRACKET) PNK/RED WIRE PNK/WHT WIRE REAR FOG LAMP BUTTON RED WIRE RED/BLU WIRE RED/WHT WIRE RIGHT ACTIVE CURVE ILLUMINATION ACTUATOR MOTOR RIGHT ACTIVE CURVE ILLUMINATION POSITION SENSOR RIGHT CORNERING RIGHT FRONT LAMP UNIT RIGHT HEADLAMP RANGE ADJUSTMENT ACTUATOR MOTOR RIGHT LIGHT DISTRIBUTION ACTUATOR MOTOR RIGHT LIGHT DISTRIBUTION POSITION SENSOR RIGHT XENON BULB W/ INTEGRATED IGNITION MODULE RIGHT XENON LIGHT POWER SUPPLY MODULE SIG SWITCH ILLUMINATION W/O ECO START/ STOP FUNCTION W/ ECO START/ STOP FUNCTION WHT/BLU WIRE WHT/RED WIRE YEL WIRE YEL/BLK WIRE

12 13 17 18 CAN E L CAN E H CAN B L CAN B H 30 31 CAN E H CAN E L ABBL-R 31 15 ABBL-L BLK/BLU WIRE BRN WIRE BRN/RED WIRE CAN B H CAN B L COMBINATION SWITCH COMPUTER DATA LINES SYSTEM FRONT ELECTRICAL PREFUSE BOX (AT RIGHT REAR OF ENGINE COMPT) FRONT FOG LAMPS INDICATOR LAMP FUSE GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GRN/WHT WIRE GRN/YEL WIRE HEADLAMP CONTROL UNIT HEADLAMP FLASHER/ HIGH BEAM SWITCH HIGH BEAM INDICATOR HOT AT ALL TIMES ILLUMINATION INSTRUMENT CLUSTER LEFT ACTIVE CURVE ILLUMINATION ACTUATOR MOTOR LEFT ACTIVE CURVE ILLUMINATION POSITION SENSOR LEFT CORNERING LEFT FRONT LAMP UNIT LEFT HEADLAMP RANGE ADJUSTMENT ACTUATOR MOTOR LEFT LIGHT DISTRIBUTION ACTUATOR MOTOR LEFT LIGHT DISTRIBUTION POSITION SENSOR LEFT REAR LAMP UNIT LEFT XENON BULB W/ INTEGRATED IGNITION MODULE LEFT XENON LIGHT POWER SUPPLY MODULE (BEHIND LEFT SIDE OF FRONT BUMPER) LOW BEAM INDICATOR LAMP LOW BEAM SWITCH PNK/WHT WIRE REAR FOG LAMP REAR FOG LAMP INDICATOR RED WIRE RED/BLU WIRE RIGHT DAYTIME RUNNING LAMPS HEADLAMPS (IF EQUIPPED) RIGHT REAR LAMP UNIT SIG SIG 31 31 CAN G L CAN G H STEERING COLUMN MODULE CONTROL UNIT W/O ECO START/STOP FUNCTION WHT/BLU WIRE WHT/RED WIRE WHT/YEL WIRE YEL/BLK WIRE YEL/WHT WIRE

6 7 8 9 PNK WIRE AS NWHGSA SIG NWHGSE 31 PNK WIRE BLK WIRE BLK/BLU WIRE BLK/GRY WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BRN WIRE BRN/BLK WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/RED WIRE BRN/VIO WIRE BRN/WHT WIRE CHARGE AIR TEMPERATURE SENSOR (LEFT REAR OF ENGINE) COOLANT TEMPERATURE SENSOR CRANKSHAFT HALL SENSOR DCP DCM EA LDS FRONT KNOCK SENSOR (LEFT SIDE OF ENGINE) GRN WIRE GRN/BLK WIRE GRN/RED WIRE GRN/WHT WIRE GRN/YEL WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/GRN WIRE GRY/RED WIRE GRY/VIO WIRE GRY/WHT WIRE INTERFERENCE SUPPRESSION CAPACITOR KWDGA LSUIUS SIG SIG ME-SFI (ME) CONTROL MODULE NCA WIRE PRESSURE SENSOR DOWNSTREAM OF THROTTLE VALVE PRESSURE SENSOR UPSTREAM OF COMPRESSOR IMPELLER PRESSURE SENSOR UPSTREAM OF THROTTLE VALVE RAIL PRESSURE SENSOR (ON FUEL RAIL) RED/BLU WIRE RED/YEL WIRE RIGHT KNOCK SENSOR (BETWEEN CYLINDER BANKS) SIG SPARK PLUG STARTING/CHARGING SYSTEM SWIRL FLAP ACTUATOR MOTOR INTAKE MANIFOLD SWIRL FLAP ACTUATOR MOTOR SWIRL FLAP HALL SENSOR VIO WIRE VIO/GRN WIRE WHT/BLU WIRE YEL WIRE YEL/BLU WIRE YEL/GRN WIRE YEL/WHT WIRE

6 7 8 9 PNK WIRE BLK WIRE BLK/BLU WIRE BLK/BRN WIRE BLK/GRY WIRE BLK/YEL WIRE BLU WIRE BLU/BRN WIRE BLU/RED WIRE BLU/WHT WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/RED WIRE CAN C H CAN C L COMPUTER DATA LINES SYSTEM COOLANT TEMPERATURE WARNING LAMP E RDS EA TANS EA UDS ENGINE DIAGNOSIS INDICATOR LAMP FUEL PRESSURE SENSOR FUSE 158 GRN/BLK WIRE GRN/BLU WIRE GRN/GRY WIRE GRN/PNK WIRE GRN/RED WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/GRN WIRE GRY/RED WIRE GRY/VIO WIRE GRY/WHT WIRE INSTRUMENT CLUSTER IPM ME-SFI (ME) CONTROL MODULE MR UDS NCA WIRE OIL LEVEL CHECK SWITCH OSS + PNK WIRE PNK/WHT WIRE RED WIRE RED/BLU WIRE RED/GRN WIRE RED/YEL WIRE THROTTLE VALVE ACTUATOR (ON THROTTLE BODY) TMOT VIO WIRE VIO/GRY WIRE WHT WIRE YEL WIRE YEL/BLU WIRE YEL/GRN WIRE

BLK/BLU WIRE BLK/BRN WIRE BLK/RED WIRE BLU/BLK WIRE BLU/GRN WIRE BLU/RED WIRE BOOST PRESSURE CONTROL PRESSURE TRANSDUCER BRN WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/YEL WIRE COMBUSTION ENGINE, A/C W/ INTEGRATED CONTROL FAN MOTOR COOLANT THERMOSTAT HEATING ELEMENT (TOP FRONT OF ENGINE BLOCK) DIVERT AIR SWITCHOVER VALVE EXHAUST CAMSHAFT HALL SENSOR (RIGHT SIDE OF ENGINE) EXHAUST CAMSHAFT SOLENOID (RIGHT FRONT OF CYLINDER HEAD) FRONT ELECTRICAL PREFUSE BOX (AT RIGHT REAR OF ENGINE COMPT) FULL-LOAD OPERATION VENT LINE HEATER ELEMENT FUSE FUSE 151 GRN/BLK WIRE GRN/BLU WIRE GRN/YEL WIRE GRY WIRE GRY/BRN WIRE GRY/RED WIRE GRY/WHT WIRE HEATING SYSTEM SHUTOFF VALVE HOT AT ALL TIMES INTAKE CAMSHAFT HALL SENSOR (TOP OF ENGINE) INTAKE CAMSHAFT SOLENOID LEFT FUEL LEVEL INDICATOR SENSOR NCA WIRE PNK WIRE PNK/WHT WIRE QUANTITY CONTROL VALVE (ON FUEL RAIL) REAR SAM CONTROL UNIT W/ FUSE, RELAY MODULE (RIGHT SIDE OF TRUNK) RED WIRE RED/BLU WIRE RED/GRN WIRE RED/GRY WIRE SIG VIO/GRY WIRE YEL/GRN WIRE