Mercedes-Benz C-class W204/S204 (2006-2011) hot w/ quiescent current cutout relay energized Wiring diagrams

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

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

10 9 CAN B L CAN B H 21 22 RFL-R RFL-L 6 7 CAN C L CAN C H BACKUP CAMERA VOLTAGE SUPPLY MODULE BACKUP LAMP BACKUP LAMP SWITCH (M/T) (ON RIGHT REAR OF TRANSMISSION) BLK WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/WHT WIRE BRN WIRE BRN/RED WIRE CAN B L CAN B H COMPUTER DATA LINES SYSTEM ELECTRONIC SELECTOR LEVER MODULE CONTROL MODULE (A/T) (UNDER CENTER CONSOLE) FRONT FRONT SAM CONTROL UNIT W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) FUSE 106 ELECTRICAL PREFUSE BOX (AT RIGHT REAR OF ENGINE COMPT) GRY WIRE GRY/BLU WIRE GRY/YEL WIRE HOT W/ QUIESCENT CURRENT CUTOUT RELAY ENERGIZED LEFT COMPUTER DATA LINES SYSTEM REAR LAMP BACKUP UNIT LAMP MODEL CODE 204.0 MODEL CODE 204.2 REAR SAM CONTROL UNIT W/ FUSE, RELAY MODULE (LEFT SIDE OF TRUNK/CARGO AREA) RED WIRE RFL (+) RIGHT REAR LAMP UNIT WHT WIRE YEL WIRE

1 2 3 30 31 LIN 1 12 13 17 18 CAN E L CAN E H CAN B L CAN B H 2 1 CAN-E H CAN-E L 2 3 CAN-G H CAN-G L 5 1 LWR LIN 1 BLK/PNK WIRE BRN WIRE BRN/RED WIRE COMBINATION SWITCH COMPUTER DATA LINES SYSTEM EXTERIOR LIGHTS SWITCH FOG LAMP INDICATOR LAMP FRONT ELECTRICAL PREFUSE BOX (AT RIGHT REAR OF ENGINE COMPT) FRONT SAM CONTROL UNIT W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) FUSE 105 FUSE 18 FUSE 89 GRN WIRE GRN/BLK WIRE GRN/WHT WIRE GRY/YEL WIRE HEADLAMP FLASHER/ HIGH BEAM SWITCH HEADLAMP RANGE CONTROLLER HIGH BEAM HIGH BEAM INDICATOR HIGH BEAM INDICATOR LAMP HOT AT ALL TIMES HOT W/ QUIESCENT CURRENT CUTOUT RELAY ENERGIZED INSTRUMENT CLUSTER INSTRUMENT PANEL SWITCH GROUP LEFT FOG LAMP LEFT FRONT HEADLAMP UNIT LOW BEAM LIN 1 LOW BEAM SWITCH LWR REAR FOG LAMP INDICATOR LAMP RED WIRE RED/GRY WIRE RIGHT FOG LAMP RIGHT FRONT HEADLAMP UNIT HIGH BEAM LOW BEAM STANDING LAMPS INDICATOR STEERING COLUMN MODULE CONTROL UNIT (TOP OF STEERING COLUMN) SWITCH ILLUMINATION WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE YEL/WHT WIRE

1 2 3 30 31 LIN 1 12 13 17 18 CAN E L CAN E H CAN B L CAN B H 2 1 CAN-E H CAN-E L 2 11 1 31 SIG 2 3 CAN-G H CAN-G L BRN WIRE BRN/RED WIRE COMBINATION SWITCH COMPUTER DATA LINES SYSTEM EXTERIOR LIGHTS SWITCH FOG LAMP INDICATOR LAMP FRONT ELECTRICAL PREFUSE BOX (AT RIGHT REAR OF ENGINE COMPT) FRONT SAM CONTROL UNIT W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) FUSE 105 FUSE 89 GRN WIRE GRN/BLK WIRE GRN/WHT WIRE GRY/YEL WIRE HEADLAMP FLASHER/ HIGH BEAM SWITCH HEADLAMP RANGE ADJUSTMENT ACTUATOR MOTOR HIGH BEAM HIGH BEAM INDICATOR HIGH BEAM LAMP HIGH BEAM SOLENOID HOT AT ALL TIMES HOT AT ALL TIMES 9 10 CAN-B H CAN-B L FUSE 18 HOT W/ QUIESCENT CURRENT CUTOUT RELAY ENERGIZED INSTRUMENT CLUSTER INSTRUMENT PANEL SWITCH GROUP LEFT FOG LAMP LEFT FRONT HEADLAMP UNIT LEFT FRONT LEVEL SENSOR (IN LEFT FRONT WHELLWELL) LEFT REAR LEVEL SENSOR (IN LEFT REAR WHELLWELL) LEFT XENON LAMP CONTROL UNIT LIN 1 LOW BEAM SWITCH REAR FOG LAMP INDICATOR LAMP RED WIRE RED/GRY WIRE RIGHT FOG LAMP RIGHT FRONT HEADLAMP UNIT RIGHT XENON LAMP CONTROL UNIT SIG CAN-G L CAN-G H STANDING LAMPS INDICATOR LAMP STEERING COLUMN MODULE CONTROL UNIT (TOP OF STEERING COLUMN) SWITCH ILLUMINATION WHT WIRE WHT/BLK WIRE WHT/RED WIRE XENON BULB W/ INTEGRATED IGNITION MODULE YEL WIRE YEL/WHT WIRE

1 2 CAN-B H CAN-B L 2 HS AUTOMATIC AIR CONDITIONING CONTROL, OPERATING UNIT BLK WIRE BRN WIRE BRN/RED WIRE CAN B L CAN B H COMPUTER DATA LINES SYSTEM FUSE FUSE 106 HOT W/ QUIESCENT CURRENT CUTOUT RELAY ENERGIZED REAR SAM CONTROL UNIT W/ FUSE, RELAY MODULE (LEFT SIDE OF TRUNK/CARGO AREA) REAR WINDOW ANTENNA AMPLIFIER 1 (IF EQUIPPED) (CENTER REAR OF ROOF) REAR WINDOW DEFROSTER RELAY REAR WINDOW HEATER REAR WINDOW HEATER BUTTON REAR WINDOW INTERFERENCE SUPPRESSION CAPACITOR 1 REAR WINDOW INTERFERENCE SUPPRESSION CAPACITOR 2 RED WIRE VIO/WHT WIRE W/ MODEL CODE 204.0 W/ MODEL CODE 204.2

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

1 2 3 4 5 6 7 8 CAN B H 31 1 2 3 4 5 6 RFL 1 2 3 4 LED AHK 31 AHK 15 GND BLK WIRE BLK/GRN WIRE BLK/RED WIRE BLK/WHT WIRE BLU WIRE BRN WIRE BRN/RED WIRE CAN B H CAN B L CAN B L 15 54 FUSE 54 FUSE 53 FUSE 56 FUSE 57 GRN WIRE GRY WIRE GRY/YEL WIRE HOT W/ CIRCUIT 15 RELAY ENERGIZED HOT W/ QUIESCENT CURRENT CUTOUT RELAY ENERGIZED PNK/RED WIRE RED WIRE RED/GRN WIRE RED/YEL WIRE TRAILER HITCH LOCKING MECHANISM TRAILER HITCH LOCKING SWITCH TRAILER RECOGNITION CONTROL MODULE TRAILER SOCKET (RIGHT SIDE (7-PIN) OF TRUNK) WHT WIRE

17 18 CAN B L CAN B H A S DK AIR CONDITIONING SYSTEM BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/VIO WIRE BLK/YEL WIRE BLU WIRE BLU/BRN WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/BLK WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/RED WIRE BRN/VIO WIRE BRN/YEL WIRE CAN C H CAN C L COMPUTER DATA LINES SYSTEM E RDS ENGINE COOLANT TEMPERATURE MULFUNCTION IND ENGINE DIAGNOSIS MULFUNCTION IND LAMP FRONT SAM CONTROL UNIT W/ FUSE, RELAY MODULE FRONT SAM CONTROL UNIT W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) FUEL PRESSURE SENSOR (IN FUEL TANK) FUEL PUMP CONTROL UNIT (UNDER RIGHT REAR SEAT) FUSE FUSE 106 FUSE 32 GRN WIRE GRN/BLK WIRE GRN/BRN WIRE GRN/GRY WIRE GRN/PNK WIRE GRN/VIO WIRE GRN/YEL WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/GRN WIRE GRY/WHT WIRE HOT W/ QUIESCENT CURRENT CUTOUT RELAY ENERGIZED INSTRUMENT CLUSTER IPM LSIK LSHK (+) (+) SV (+) SV ME-SFI (ME) CONTROL MODULE (TOP CENTER OF ENGINE) NCA WIRE NWG M NWSA 1 NWSE 2 ORG/ WIRE PNK/BLK WIRE PNK/RED WIRE PNK/WHT WIRE RED WIRE RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE RIGHT FUEL PUMP SECONDARY AIR INJECTION RELAY SLV THS STARTING/CHARGING SYSTEM VIO WIRE VIO/BLK WIRE VIO/BLU WIRE VIO/BRN WIRE VIO/GRN WIRE VIO/YEL WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/BRN WIRE WHT/GRN WIRE WHT/RED WIRE WHT/YEL WIRE YEL WIRE YEL/BLK WIRE YEL/GRN WIRE YEL/RED WIRE YEL/WHT WIRE ZUE 1 ZUE 3 ZUF 5 ZUE 2 ZUE 4 ZUE 6