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

1 2 3 GND NTC 1.8L TURBO 3.5L 2.1L TURBO DIESEL 2 3 11 3 SOLID STATE BLK/BLU WIRE BLK/RED WIRE BLU/BLK WIRE BLU/GRN WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/YEL (OR BRN/WHT) WIRE BRN/YEL WIRE COOLANT CIRCULATION PUMP COOLANT TEMPERATURE SENSOR ENGINE CONTROLS SYSTEM EXCEPT 2.1L TURBO DIESEL FRONT SAM CONTROL UNIT W/ FUSE, RELAY MODULE FUSE 12 FUSE 22 GRN/BLU WIRE GRY/BLU WIRE HOT W/ ENGINE CIRCUIT 87 RELAY ENERGIZED INTERIOR TEMPERATURE SENSOR W/ INTEGRATED FAN LEUS OVERHEAD CONTROL PANEL ELECTRONICS (W/ OVERHEAD CONTROL PANEL W/O CAN) (C-CLASS: CENTER REAR OF TRUNK) REAR BLEND AIR FLAP RED WIRE RED/BLK WIRE RED/BRN WIRE RED/VIO WIRE RED/WHT WIRE RED/YEL WIRE REFRIGERANT COMPRESSOR (LEFT FRONT OF ENGINE) REFRIGERANT PRESSURE SENSOR (BOTTOM LEFT SIDE OF RADIATOR CONDENSER) REG SIG SOLID STATE TMOT VIO/WHT WIRE WHT/GRN WIRE WHT/VIO WIRE WHT/YEL WIRE

1.8L TURBO 3.5L 2.1L TURBO DIESEL 2 3 46 26 43 18 REG LUES 9 10 CAN-B H CAN-B L BLK/BLU WIRE BLK/RED WIRE BRN WIRE BRN/RED WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM COOLANT CIRCULATION PUMP (W/ THERMOTRONIC) (RIGHT SIDE OF ENGINE COMPT) COOLANT TEMPERATURE SENSOR ENGINE CONTROLS SYSTEM FRONT ELECTRICAL PREFUSE BOX (AT RIGHT REAR OF ENGINE COMPT) FRONT SAM CONTROL MODULE UNIT W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) FUSE 151 GRN/BLU WIRE GRN/RED WIRE HOT AT ALL TIMES HOT W/ ENGINE CIRCUIT 87 RELAY ENERGIZED FUSE 22 KHD MRI PURGE CONTROL VALVE (LEFT FRONT ENGINE COMPT) RED WIRE RED/BLK WIRE RED/YEL WIRE REFRIGERANT PRESSURE SENSOR (AT BOTTOM LEFT SIDE OF RADIATOR CONDENSER) SIG SOLID STATE TMOT VIO/WHT WIRE 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

7 6 24 5 GSS, BF RETURN LINE SBE GSS, FA 74 75 COMPUTER DATA LINES SYSTEM CAN E L CAN E H ACOUSTIC TURN SIGNAL LIGHT FUNCTION CHECK ANTI-LOCK BRAKE SYSTEM INDICATOR LAMP BBV HR BBV VL BFS BLK WIRE BLU WIRE BRAKE SYSTEM WARNING LAMP BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE CAN B L CAN B H CAN E H CAN E L CAN-E L CAN-E H COMPUTER DATA LINES SYSTEM COOLANT TEMPERATURE GAUGE COOLANT TEMPERATURE WARNING LAMP DIGITAL CLOCK, OUTSIDE TEMPERATURE INDICATOR DISTRONIC WARNING LAMP (IF EQUIPPED) ELECTRONIC STABILITY PROGRAM WARNING LAMP ENGINE DIAGNOSIS INDICATOR LAMP ESP/ASR OFF WARNING LAMP FRONT FOG LAMPS INDICATOR LAMP FRONT SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) FUEL LEVEL INDICATOR FUEL RESERVE INDICATOR LAMP FUSE 28 FUSE 18 GASOLINE GEAR INDICATOR (PRND) GRN WIRE GRN/WHT WIRE GRY/GRN WIRE GRY/YEL WIRE HIGH BEAM INDICATOR LAMP HOT AT ALL TIMES INSTRUMENT CLUSTER INSTRUMENT ILLUMINATION INSTRUMENT ILLUMINATION BRIGHTNESS CONTROL LEFT TURN SIGNAL IND LAMP LIN 1 LOW BEAM INDICATOR LAMP MULTI-FUNCTION DISPLAY PREGLOW INDICATOR LAMP (DIESEL) RED/GRN WIRE RED/GRY WIRE RED/YEL WIRE RIGHT TURN SIGNAL IND LAMP SEAT BELT WARNING LAMP SERVICE BRAKE INDICATOR LAMP SIG SPEEDOMETER SUPPLEMENTAL RESTRAINT SYSTEM CONTROL UNIT (UNDER FRONT OF CENTER CONSOLE) SUPPLEMENTAL RESTRAINT SYSTEM INDICATOR LAMP TACHOMETER, BRIGHTNESS SENSOR TIRE PRESSURE MONITOR WARNING LAMP (IF EQUIPPED) TRANSMISSION MODE DISPLAY (S) TRAVEL DISTANCE DISPLAY VIO/GRN WIRE WARNING BUZZER YEL WIRE YEL/BLU WIRE YEL/RED WIRE

15 SIG 30 30 (+) 31 SIG 58 SL-L SL-R (+) PNK WIRE 7 8 9 10 11 12 13 14 (+) ANST ZV ANT BSL-R ANTI-THEFT SYSTEM SOUND SYSTEMS SEATS SYSTEM SUPPLEMENTAL BLK WIRE BLK/BLU WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/GRY 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/GRY WIRE BLU/VIO 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 H CAN B L 31 31 31 31 CAN B L CAN B H (+) (+) SIG LIN COMPUTER DATA LINES SYSTEM DEFOGGER SYSTEM DOOR LOCKS SYSTEM ENGINE CONTROLS SYSTEM EXTERIOR LIGHTS SYSTEM ANTI-THEFT SYSTEM EXTERIOR LIGHTS SYSTEM EXTERIOR LIGHTS SYSTEM TRUNK, TAILGATE, FUEL DOORS SYSTEM EXTERIOR LIGHTS SYSTEM INTERIOR LIGHTS SYSTEM FRONT ELECTRICAL PREFUSE BOX (AT RIGHT REAR OF ENGINE COMPT) FUSE FUSE 164 GRN WIRE GRN/BLU WIRE GRN/RED 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 AT ALL TIMES 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 PNK BSL-L WIRE PNK/RED WIRE POWER DISTRIBUTION SYSTEM REAR SAM CONTROL UNIT W/ FUSE, RELAY MODULE (RIGHT 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 SEATS SYSTEM SUPPLEMENTAL RESTRAINTS SYSTEM SIG SIG SIG SIG SOUND SYSTEMS SOUND SYSTEMS SEATS SYSTEM SUPPLEMENTAL RESTRAINTS SYSTEM TRUNK, TAILGATE, FUEL DOORS SYSTEM TRUNK, TAILGATE, FUEL DOORS SYSTEM STARTING/CHARGING SYSTEM VIO/BLU WIRE VIO/WHT WIRE W/O ECO START/STOP FUNCTION WHT/BLU WIRE WHT/YEL WIRE WIPER/WASHER SYSTEM WIPER/WASHER SYSTEM SOUND SYSTEMS EXTERIOR LIGHTS SYSTEM YEL WIRE

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 ENGINE ACCESSORIES SYSTEM POWER DISTRIBUTION SYSTEM GRN WIRE NAVIGATION SYSTEM PNK/BLK WIRE PNK/BLU WIRE PNK/GRN WIRE PNK/YEL WIRE REAR SAM CONTROL UNIT W/ FUSE, RELAY MODULE (RIGHT SIDE OF TRUNK/CARGO AREA) RED WIRE RED/BLK WIRE RED/BLU WIRE RED/BRN WIRE RED/GRN WIRE RED/ORG WIRE RED/VIO WIRE RED/WHT WIRE RED/YEL WIRE SEATS SYSTEM SEATS SYSTEM SEATS SYSTEM SOUND SYSTEM SOUND SYSTEM NAVIGATION SYSTEM NAVIGATION, SOUND SYSTEMS SOUND SYSTEMS SUPPLEMENTAL RESTRAINTS SYSTEM SEATS SYSTEM TRANSMISSIONS SYSTEM WHT WIRE

1 2 3 4 5 6 7 8 9 10 31/1 15 54 31 LED 31/2 AHK BLK WIRE BLK/GRN WIRE BLK/RED WIRE BLK/WHT WIRE BLU WIRE BRN WIRE BRN/RED WIRE CAN-B H CAN-B L COMPUTER DATA LINES SYSTEM FRONT ELECTRICAL PREFUSE BOX (AT RIGHT REAR OF ENGINE COMPT) FUSE FUSE 53 FUSE 54 FUSE 57 FUSE 58 FUSE 89 GRN WIRE GRY WIRE GRY/YEL WIRE HOT AT ALL TIMES HOT W/ CIRCUIT 15 RELAY ENERGIZED HOT W/ QUIESCENT CURRENT CUTOUT RELAY ENERGIZED LED REAR SAM CONTROL UNIT W/ FUSE, RELAY MODULE (RIGHT SIDE OF TRUNK/CARGO AREA) RED WIRE RED/BLU WIRE RED/GRN WIRE RED/YEL WIRE RFL (+) TRAILER HITCH LOCKING SWITCH (W/ SWIVELING TRAILER HITCH) TRAILER HITCH RELEASE (W/ SWIVELING TRAILER HITCH) TRAILER RECOGNITION CONTROL UNIT TRAILER SOCKET W/O ECO START/ STOP FUNCTION W/ ECO START/ STOP FUNCTION 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