Mercedes-Benz C-class W204/S204/С204 facelift (2011-2015) front sam control unit w/ fuse, relay module (left rear of engine compt) Wiring diagrams

BRN WIRE BRN/WHT WIRE CAN-D H CAN-D L FRONT SAM CONTROL UNIT W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) GRY WIRE GRY/WHT WIRE HOT AT ALL TIMES FUSE POWER DISTRIBUTION SYSTEM REAR SAM CONTROL UNIT W/ FUSE, RELAY MODULE (RIGHT SIDE OF TRUNK/CARGO AREA) RED/GRN WIRE

10 9 CAN B L CAN B H 17 18 12 13 CAN B L CAN B H CAN E L CAN E H 3 1 CAN E L CAN E H 4 3 15 LWR ACOUSTIC TURN SIGNAL LIGHT FUNCTION CHECK BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLK/PNK WIRE BLK/WHT WIRE BLU WIRE BRN WIRE BRN/RED WIRE COMPUTER DATA LINES SYSTEM EXTERIOR LIGHTS SWITCH FRONT FOG LAMP BUTTON FRONT SAM CONTROL UNIT W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) FUSE 29 FUSE 5 FUSE 30 GRN WIRE GRN/WHT WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/PNK WIRE GRY/WHT WIRE GRY/YEL WIRE HAZARD WARNING FLASHER SWITCH HEADLAMPS HOT W/ CIRCUIT 15 RELAY ENERGIZED ILLUMINATION SWITCH INSTRUMENT CLUSTER INSTRUMENT PANEL SWITCH GROUP LEFT FRONT LAMP UNIT LEFT FRONT LAMP UNIT TURN STANDING/ PARKING LAMP SIGNAL LAMP LEFT FRONT STANDING, PARKING LAMP LEFT FRONT TURN SIGNAL LAMP LEFT SIGNAL LAMP ACTUATION MODULE LED LEFT TURN SIGNAL IND LIGHT LIN 1 LWR PNK WIRE PNK/RED WIRE REAR FOG LIGHT BUTTON RED WIRE RIGHT TURN SIGNAL IND LIGHT W/ XENON WHT WIRE YEL WIRE

16 15 23 2 BSL R 24 22 21 NSL-L RFL-L RFL-R 31 30 CAN B L CAN B H 31 LIN 2 4 1 2 30 CAN E L CAN E H 58 58 54 SL R 6 7 CAN B L CAN B H BLK WIRE BLK/BLU WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/RED WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BRN WIRE BRN/GRY WIRE BRN/RED WIRE BSL L COMBINATION SWITCH COMPUTER DATA LINES SYSTEM FOG BACKUP BACKUP LAMP LAMP LAMP FRONT SAM CONTROL UNIT W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) FUSE 13 FUSE 164 GRN WIRE GRN/BLU WIRE GRN/WHT WIRE GRY WIRE GRY/BLU WIRE GRY/RED WIRE GRY/VIO WIRE GRY/YEL WIRE HEADLAMP FLASHER/ HIGH BEAM SWITCH HOT AT ALL TIMES INNER STOP/ TAIL LAMP INNER TURN SIGNAL LAMP TAIL/ STOP/ PARKING TAIL LAMP LAMP LEFT LICENSE PLATE LAMP CENTER STOP LAMP LEFT REAR LAMP UNIT NSL-R PNK SL L WIRE PNK WIRE PNK/RED WIRE RAIN/LIGHT SENSOR (W/ RAIN/LIGHT SENSOR) REAR SAM CONTROL UNIT W/ FUSE, RELAY MODULE (RIGHT SIDE OF TRUNK) RED WIRE RED/BLU WIRE RIGHT LICENSE PLATE LAMP RIGHT REAR LAMP UNIT SIDE MARKER LAMP SIDE MARKER LAMP FOG LAMP STEERING COLUMN MODULE CONTROL UNIT (TOP OF STEERING COLUMN) STOP STOP/ TURN SIGNAL LAMP TAIL/ PARKING LAMP TURN SIGNAL LAMPS SWITCH VIO WIRE VIO/BLU WIRE W/O ECO START/STOP FUNCTION W/ ECO START/STOP FUNCTION WHT WIRE YEL 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-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

1 2 4 3 CAN E L CAN E H 30 31 9 10 CAN-B H CAN-B L BLK WIRE BLK/WHT WIRE BRN WIRE BRN/RED WIRE CENTER HORNS BUTTON COMPUTER DATA LINES SYSTEM FANFARE HORN RELAY FRONT SAM CONTROL UNIT W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) FUSE FUSE 13 GRN WIRE GRN/WHT WIRE HOT AT ALL TIMES HOT W/ QUIESCENT CURRENT CUTOUT RELAY ENERGIZED LEFT FANFARE HORN (BEHIND LEFT SIDE OF FRONT BUMPER) LEFT FANFARE HORN SYSTEM BUTTON RED/BLU WIRE RELAY RIGHT FANFARE HORN (BEHIND RIGHT SIDE OF FRONT BUMPER) RIGHT FANFARE HORN SYSTEM BUTTON STEERING WHEEL ELECTRONICS

1 2 3 4 5 6 30 RLS SIG SIG SIG SIG GND 1 2 3 4 5 6 7 8 31 SOS INFO WS 1 2 3 4 5 6 7 8 LIN 2 1 2 3 4 5 6 IRS OFF IRS LED 27 28 29 31 32 30 SOS LED WS LED INFO LED WS INFO SOS 31 ASS LED ASS OFF 31 FL AUTOMATIC AIR CONDITIONING CONTROL, OPERATING UNIT BLK WIRE BLK/GRY WIRE BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/PNK WIRE BLU/WHT WIRE BRN WIRE BRN/BLK WIRE BRN/GRY WIRE BRN/WHT WIRE FRONT DOME LAMP SWITCH FRONT SAM CONTROL UNIT W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) FUSE 12 FUSE 152 GASOLINE GND NTC (+) GRN WIRE GRN/WHT WIRE GRY WIRE GRY/BLU WIRE GRY/RED WIRE GRY/YEL WIRE HOT AT ALL TIMES FRONT ELECTRICAL PREFUSE BOX HOT W/ QUIESCENT CURRENT CUTOUT RELAY ENERGIZED INFO LED WS LED SOS LED INTERIOR LAMP AUTOMATIC FUNCTION SWITCH INTERIOR PROTECTION RECEIVER INTERIOR PROTECTION SWITCH (W/ TOW-AWAY PROTECTION, INTERIOR PROTECTION) INTERIOR TEMPERATURE SENSOR W/ INTEGRATED FAN LEFT FRONT READING LAMP SWITCH LEFT INTERIOR PROTECTION TRANSMITTER LIN 2 NCA WIRE NTC- PNK 17 18 WIRE PNK WIRE POWER TOPS SYSTEM REAR DOME LAMP, SWITCH RED WIRE RED/BLK WIRE RED/BLU WIRE RED/BRN WIRE RED/GRN WIRE RED/VIO WIRE RED/WHT WIRE RIGHT FRONT READING LAMP SWITCH RIGHT INTERIOR PROTECTION TRANSMITTER RIGHT LEFT FRONT FRONT INTERIOR INTERIOR LAMP LAMP SIG LIN 2 TOWING SENSOR BUTTON (W/ TOW-AWAY PROTECTION, INTERIOR PROTECTION) WHT WIRE YEL WIRE YEL/RED WIRE YEL/VIO WIRE

1 2 3 4 5 6 7 8 LIN 2 1 2 3 4 5 6 IRS OFF IRS LED 2 3 4 5 6 7 8 SOS INFO WS 27 28 29 31 32 30 SOS LED WS LED INFO LED WS INFO SOS 31 ASS LED ASS OFF 31 FL BLK WIRE BLK/GRY WIRE BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/PNK WIRE BRN WIRE BRN/GRY WIRE BRN/RED WIRE CAN B L CAN B H LIN 2 COMPUTER DATA LINES SYSTEM EMERGENCY CALL SYSTEM CONTROL UNIT (IF EQUIPPED) (CENTER FRONT OF TRUNK) FRONT DOME LAMP SWITCH FRONT SAM CONTROL UNIT W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) FUSE 17 GRN WIRE GRY WIRE GRY/BLU WIRE GRY/RED WIRE GRY/YEL WIRE HOT W/ QUIESCENT CURRENT CUTOUT RELAY ENERGIZED HS 2 HS(+) INFO LED WS LED SOS LED INTERIOR LAMP AUTOMATIC FUNCTION SWITCH INTERIOR PROTECTION SWITCH (W/ TOW-AWAY PROTECTION, INTERIOR PROTECTION) INTERIOR TEMPERATURE SENSOR W/ INTEGRATED FAN LEFT FRONT INTERIOR LAMP LEFT FRONT READING LAMP SWITCH LIN 2 MOTOR OVERHEAD CONTROL PANEL CONTROL UNIT (CENTER REAR OF TRUNK) PNK 14 15 WIRE PNK WIRE POWER TOPS SYSTEM REAR DOME LAMP, SWITCH RED WIRE RED/BLK WIRE RED/BLU WIRE RED/VIO WIRE RIGHT FRONT INTERIOR LAMP RIGHT FRONT READING LAMP SWITCH TILTING/ SLIDING ROOF SWITCH TOWING SENSOR BUTTON (W/ TOW-AWAY PROTECTION, INTERIOR PROTECTION) VIO WIRE WHT WIRE YEL WIRE YEL/RED WIRE YEL/VIO WIRE

1 2 3 4 5 6 7 8 THERMAL FUSE ANT BLU WIRE BRN WIRE BRN/GRY WIRE BRN/RED WIRE CAN B H CAN B L COMBUSTION AIR BLOWER TEMPERATURE SENSOR COMPUTER DATA LINES SYSTEM FRONT SAM CONTROL UNIT W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) FUSE 18 FUSE 73 FUSE 75 GLOW PLUG FLAME MONITOR FUEL PREHEATING SYSTEM HEATING ELEMENT GRN/YEL WIRE GRY/YEL WIRE HOT AT ALL TIMES LIN 1 MULTI-FUNCTION ANTENNA NCA NCA WIRE NCA WIRE REAR SAM CONTROL UNIT W/ FUSE, RELAY MODULE (RIGHT SIDE OF TRUNK) RED/GRN WIRE RED/ORG WIRE STATIONARY HEATER BUTTON STATIONARY HEATER FUEL PUMP STATIONARY HEATER SWITCHOVER VALVE STATIONARY HEATER UNIT (C-CLASS: LEFT FRONT WHEELWELL) STH SWITCHOVER VALVE HEATER CONTROL UNIT TEL UPPER CONTROL PANEL CONTROL UNIT W/ MOBILE PHONE PREINSTALLATION W/ UNIVERSAL INTERFACE W/O MOBILE PHONE PREINSTALLATION W/ UNIVERSAL INTERFACE W/O XENON HEADLAMPS W/ XENON HEADLAMPS