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

ABS IND. BFS BLA BLK WIRE BLK/GRN WIRE BLK/PNK WIRE BLK/RED WIRE BLS H BLS_L (-) SIG DF HR S DF HR M BLS_M BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/WHT WIRE BRAKE FLUID LEVEL SWITCH (IN BRAKE FLUID RESERVOIR) BRAKE FLUID, PARKING BRAKE WARNING LAMP BRAKE SYSTEM WARNING LAMP IND BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/VIO WIRE BRN/WHT WIRE CAN E H CAN E H CAN E L CAN E L CAN H H CAN H L COMPUTER DATA LINES SYSTEM DF VL S DF VL M 31 ECO 31 ELECTRONIC STABILITY PROGRAM WARNING LAMP ESP OFF IND LAMP ESPA/ ASR OFF WARNING LAMP SERVICE BRAKE IND LAMP EXCEPT 3.5L 3.5L 1.8L TURBO 2.1L TURBO DIESEL 2 3 4 FRONT AXLE BRAKE PRESSURE SENSOR FRONT AXLE SWITCH OVER VALVE FRONT PRESSURE SENSOR FRONT SAM CONTROL MODULE W/ FUSE, FUSE 20 FUSE 1 FUSE 14 FUSE 35 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 (GLK CLASS: LEFT FRONT WHEEL HUB ASSEMBLY) LEFT FRONT PRESSURE REGULATOR VALVE (HOLD) LEFT FRONT PRESSURE REGULATOR VALVE (RELEASE) LEFT REAR AXLE RPM SENSOR (GLK CLASS: LEFT REAR WHEEL HUB ASSEMBLY) LEFT REAR PRESSURE REGULATOR VALVE (HOLD) LEFT REAR PRESSURE REGULATOR VALVE (RELEASE) NCA WIRE PARKING BRAKE INDICATOR SWITCH (ON PARKING BRAKE SUPPORT BRACKET) PML 30 DF VR M DF VR S BLA DF HL M DF HL S PNK 87 SSK WIRE PNK WIRE PNK/BLU WIRE PNK/GRN WIRE PNK/WHT WIRE POWER STEERING PUMP QUANTITY CONTROL VALVE (IF EQUIPPED) REAR PRESSURE SENSOR REAR SAM CONTROL MODULE W/ FUSE, RELAY MODULE (RIGHT SIDE OF TRUNK) RED WIRE RED/BLK WIRE RED/BLU WIRE RED/BRN WIRE RED/GRN WIRE RED/GRY WIRE RED/VIO WIRE RED/WHT WIRE RELAY MODULE (LEFT REAR OF ENGINE COMPT) RIGHT FRONT PRESSURE REGULATOR VALVE (HOLD) RIGHT FRONT PRESSURE REGULATOR VALVE (RELEASE) RIGHT REAR AXLE RPM SENSOR (GLK CLASS: RIGHT REAR WHEEL HUB ASSEMBLY) RIGHT REAR PRESSURE REGULATOR VALVE (HOLD) RIGHT REAR PRESSURE REGULATOR VALVE (RELEASE) SIG STEERING ANGLE SENSOR STEERING COLUMN MODULE CONTROL UNIT (TOP OF STEERING COLUMN) TAXIMETER ELECTRICAL CONNECTOR (IF EQUIPPED) VIO WIRE VIO/GRY WIRE VIO/WHT WIRE WHT GRN/ WIRE WHT WIRE

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 CAN B H CAN B L EMD 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 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 BRN/WHT WIRE CAN B L CAN B H CAN-B H CAN-B L COMPUTER DATA LINES SYSTEM EMERGENCY CALL SYSTEM CONTROL UNIT (CENTER FRONT OF TRUNK/CARGO AREA) FAN RELAY MODULE FRONT ELECTRICAL PREFUSE BOX (RIGHT REAR OF ENGINE COMPT) FUSE FUSE 17 FUSE 18 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 LEFT INTERIOR PROTECTION PROTECTION RECEIVER TRANSMITTER INTERIOR PROTECTION, TOW-AWAY PROTECTION CONTROL UNIT (IF EQUIPPED) IRS LED IRS-OFF LEFT ENGINE HOOD CONTACT SWITCH (LEFT FRONT CORNER OF ENGINE COMPT) MULTI-FUNCTION DISPLAY NCA WIRE 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 (RIGHT 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/ ECO START/ STOP FUNCTION W/O ECO START/ STOP FUNCTION WHT WIRE WS LED YEL WIRE YEL/RED WIRE YEL/VIO WIRE

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 BLOWER MOTOR (UNDER RIGHT SIDE OF DASH) BLOWER REGULATOR A/C HOUSING BLU WIRE BLU/BLK WIRE BRN WIRE BRN/BLK WIRE BRN/RED WIRE COMPUTER DATA LINES SYSTEM DATA FUSE FUSE 43 HOT AT ALL TIMES HOT W/ CIRCUIT 15 RELAY ENERGIZED HOT W/ QUIESCENT CURRENT CUTOUT RELAY ENERGIZED REAR ENGINE COMPT) (GLK-CLASS: RIGHT REAR ENGINE COMPT) REAR SAM CONTROL UNIT W/FUSE, RELAY MODULE (C-CLASS: AT RIGHT REAR WINDOW HEATER BUTTON RED WIRE RED/BLK WIRE RED/BLU WIRE RED/VIO WIRE RED/WHT WIRE SIG SIG NTC DATA FOND GND DATA SUN SENSOR (TOP CENTER OF DASH) VIO/WHT WIRE W/O ECO START/STOP FUNCTION W/ ECO START/STOP FUNCTION WHT WIRE WHT/BLU WIRE YEL WIRE YEL/BLU WIRE

BLU GRY/ WIRE BLU WIRE BLU/BLK WIRE BRN WIRE BRN/BLK WIRE COMPT) (GLK-CLASS: RIGHT REAR ENGINE COMPT) DATA FUSE 156 GRY BLU/ WIRE GRY WIRE GRY/BLU WIRE HOT AT ALL TIMES FRONT ELECTRICAL PREFUSE BOX (C-CLASS: AT RIGHT REAR ENGINE LEFT CENTER AIR OUTLET FLAP ACTUATOR MOTOR (C-CLASS: LOWER LEFT CENTER AIR OUTLET SYMBOL ILLUMINATION LEFT FRONT SIDE AIR OUTLET SYMBOL ILLUMINATION NCA WIRE PTC HEATER BOOSTER (2.0L TURBO DIESEL) (UPPER CENTER OF HVAC UNIT) REAR AUTOMATIC AIR CONDITIONING OPERATING UNIT RED WIRE RED/BLK WIRE RED/VIO WIRE RED/WHT WIRE RIGHT CENTER AIR OUTLET SYMBOL ILLUMINATION RIGHT FRONT SIDE AIR OUTLET SYMBOL ILLUMINATION VIO/GRN WIRE VIO/RED WIRE VIO/WHT WIRE W/ AIR OUTLET SYMBOL ILLUMINATION W/O 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 4 VIDEO N LVDS N VIDEO P LVDS P 2 3 1 5 6 CAN S H CAN S L 31 31 31 PNK WIRE 4 1 3 2 15 31 CAN S L CAN S H BLK WIRE BLU WIRE BRN WIRE CAN E H CAN E L CAN H H CAN H H CAN H L CAN H H CAN H L BLS H BLS_M BLS_L CAN H L CAN S H CAN S L 31 PNK WIRE CAN-G H CAN-G L CAN-S H CAN-S L COMPUTER DATA LINES SYSTEM DISTRONIC CONTROL UNIT DISTRONIC ELECTRIC CONTROLLER UNIT (CENTER OF FRONT GRILLE) DISTRONIC RADAR SENSOR ELECTRONIC STABILITY PROGRAM CONTROL UNIT (LEFT FRONT OF ENGINE COMPT) FUSE GRN WIRE GRN/WHT WIRE HOT AT ALL TIMES HOT W/ QUIESCENT CURRENT CUTOUT RELAY ENERGIZED LEFT FRONT BUMPER DISTRONIC SENSOR (DTR) LEFT REAR BUMPER INTELLIGENT RADAR SENSOR (W/ BLIND SPOT ASSIST), LEFT REAR BUMPER RADAR SENSOR (BEHIND LEFT END OF REAR BUMPER) MULTI-FUNCTION CAMERA ORG/ WIRE PNK WIRE PNK/BLU WIRE PNK/GRN WIRE PNK/WHT WIRE RED/BLU WIRE RIGHT FRONT BUMPER DISTRONIC SENSOR (DTR) RIGHT REAR BUMPER INTELLIGENT RADAR SENSOR (W/ BLIND SPOT ASSIST), RIGHT REAR BUMPER RADAR SENSOR (BEHIND RIGHT REAR END OF REAR BUMPER) VIDEO, RADAR SENSOR SYSTEM CONTROL UNIT VIO WIRE VIO/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

1 2 3 CAN-A H CAN-A L 31 1 2 3 CAN-C H CAN-C L 31 1 2 CAN-A H CAN-A L 1 2 CAN-C H CAN-C L 3 2 CAN-C H CAN-C L 3 4 10 9 CAN-C H CAN-C L 3 4 CAN-A H CAN-A L 3.5L EXCEPT 3.5L 4 14 CAN-A H CAN-A L 4 8 CAN-A H CAN-A L 8 2 CAN-A H CAN-A L 8 4 CAN-A H CAN-A L AUDIO/COMAND CONTROL PANEL AUDIO/COMAND DISPLAY BLK WIRE BLK/WHT WIRE BLU WIRE BLU/WHT WIRE BRN/WHT WIRE CAN-G H CAN-G L CAN-G H CAN-G L CAN-G H CAN-G L CRADLE FOR NAVIGATION MODULE DRIVE TRAIN CAN VOLTAGE DISTRIBUTOR ELECTRICAL CONNECTOR DVD PLAYER (W/ TV, VIDEO IN REAR) FUEL PUMP CONTROL MODULE (UNDER RIGHT REAR SEAT) FULLY INTEGRATED TRANSMISSION CONTROL UNIT GRN WIRE GRN/WHT WIRE HEADLAMP CONTROL UNIT LEFT FRONT LAMP UNIT (W/ XENON LAMPS) LEFT REAR DISPLAY (W/ TV, VIDEO IN REAR) LEFT XENON LIGHT CONTROL UNIT RIGHT FRONT LAMP UNIT (W/ XENON LAMPS) RIGHT REAR DISPLAY (W/ TV, VIDEO IN REAR) RIGHT XENON LIGHT CONTROL UNIT TELEMATICS CAN VOLTAGE DISTRIBUTOR ELECTRICAL CONNECTOR WHT WIRE YEL WIRE YEL/WHT WIRE

1 2 3 CAN-B H CAN-B L 31 1 2 CAN-B H CAN-B L 1.8L TURBO EXCEPT 1.8L TURBO 11 9 CAN-B H CAN-B L 12 6 CAN-A H CAN-A L 2 1 CAN-B H CAN-B L 3 4 2 3 CAN-B H CAN-B L 30 31 CAN-B H CAN-B L 7 5 CAN-B H CAN-B L 7 6 CAN-B H CAN-B L 7 8 CAN-B H CAN-B L 9 10 CAN-B L CAN-B H AUTOMATIC AIR CONDITIONING CONTROL, OPERATING UNIT (2, 3 ZONES THERMATIC) BLK WIRE BLK/WHT WIRE BLU WIRE BLU/WHT WIRE BRN WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE CAN B H CAN B L CAN C H CAN C L CAN E H CAN E L CAN-B H CAN-B L CAN-C L CAN-C H CAN-E L CAN-E H CAN-D H CAN-D L CAN-G H CAN-G L CDI CONTROL MODULE (2.1L TURBO DIESEL) (LEFT SIDE OF ENGINE) COMMAND CONTROL UNIT DIAGNOSTIC CONNECTOR (DLC) (UNDER LEFT SIDE DASH) DRIVER SEAT CONTROL UNIT (UNDER DRIVER'S SEAT) EMERGENCY CALL SYSTEM CONTROL UNIT FRONT SAM CONTROL UNIT W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) GRN WIRE GRN/WHT WIRE GRY WIRE GRY/WHT WIRE LEFT VEHICLE FLOOR INTERIOR CAN VOLTAGE DISTRIBUTOR ELECTRICAL CONNECTOR PANORAMIC SLIDING ROOF CONTROL MODULE (LEFT FRONT OF ROOF) PNK 3 4 WIRE PNK WIRE PNK/WHT WIRE RADIO 12 6 CAN-B H CAN-B L TRAILER RECOGNITION CONTROL MODULE (GLK-CLASS: RIGHT REAR CARGO AREA) W/ OVERHEAD CONTROL PANEL W/ CAN YEL WIRE YEL/WHT 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