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

10 9 CAN B L CAN B H 30 31 11 SIG SIG (+) 31 30 CAN B L CAN B H 6 3 2 PNK WIRE BLK/GRY WIRE BLK/VIO WIRE BLU WIRE BLU/WHT WIRE BRN WIRE BRN/BLK WIRE BRN/GRN WIRE BRN/RED WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM FL 31 31 FRONT DOME LAMP SWITCH FRONT SAM CONTROL UNIT FUSE 17 W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) FUSE 21 GLOVE BOX LAMP) GRN WIRE GRN/WHT WIRE GRY/BLU WIRE GRY/WHT WIRE HOT AT ALL TIMES INTERIOR LAMP AUTOMATIC FUNCTION SWITCH INTERIOR PROTECTION SWITCH LEFT FRONT INTERIOR LAMP LEFT FRONT MIRROR LAMP SWITCH LEFT FRONT READING LAMP SWITCH LEFT REAR LEFT REAR READING LAMP LEFT SUN VISOR MIRROR LAMP PNK 8 9 10 WIRE PNK/YEL WIRE READING SWITCH REAR DOME LAMP REAR DOME LAMP, SWITCH REAR INTERIOR LAMP REAR SAM CONTROL UNIT W/ FUSE, RELAY MODULE (RIGHT SIDE OF TRUNK/CARGO AREA) RED WIRE RED/BLK WIRE RED/BLU WIRE RED/VIO WIRE RELAY ENERGIZED RIGHT FRONT INTERIOR LAMP RIGHT FRONT MIRROR LAMP SWITCH RIGHT FRONT READING LAMP SWITCH RIGHT REAR READING LAMP RIGHT REAR READING SWITCH RIGHT SUN VISOR MIRROR LAMP W/ AVANTGARDE, ELEGANCE W/ CLASSIC W/O CAN W/ CAN YEL WIRE

2 1 4 CAN B H CAN B L 31 2 1 CAN-B H CAN-B L AMBIENT LAMP RIGHT LEFT READING LAMP READING LAMP BLK WIRE BLK/VIO WIRE BLU WIRE BRN WIRE BRN/GRN WIRE BRN/RED WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM FLAT WIRE FRONT ELECTRICAL PREFUSE BOX (RIGHT REAR OF ENGINE COMPT) FUSE FUSE 152 GRN WIRE GRN/WHT WIRE GRY WIRE GRY/BLU WIRE HOT AT ALL TIMES HOT W/ QUIESCENT CURRENT CUTOUT RELAY INSIDE REARVIEW MIRROR LEFT FRONT DOOR HANDLE ILLUMINATION (W/ INTERIOR LIGHTS PACKAGE) LEFT FRONT DOOR HANDLE RECESS ILLUMINATION LEFT LUGGAGE COMPARTMENT LAMP (GLK-CLASS) LEFT REAR DOOR HANDLE ILLUMINATION (W/ INTERIOR LIGHTS PACKAGE) LEFT REAR DOOR HANDLE RECESS ILLUMINATION LEFT TAILGATE AMBIENT LAMP, WARNING LAMP PNK 8 9 WIRE PNK WIRE RED WIRE RIGHT FRONT DOOR HANDLE ILLUMINATION (W/ INTERIOR LIGHTS PACKAGE) RIGHT FRONT DOOR HANDLE RECESS ILLUMINATION RIGHT LUGGAGE COMPARTMENT LAMP RIGHT REAR DOOR HANDLE ILLUMINATION (W/ INTERIOR LIGHTS PACKAGE) RIGHT REAR DOOR HANDLE RECESS ILLUMINATION TAILGATE EXTERNAL OPERATION SWITCH VIO WIRE W/O ECO START/STOP FUNCTION YEL WIRE

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

ANT GPS SHIELD BLK WIRE BLU/BLK WIRE BLU/BRN WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/PNK WIRE BLU/VIO WIRE BRN WIRE CAN D H CAN D L CENTER INSTRUMENT PANEL SPEAKER COMAND CONTROL UNIT (W/ COMAND) COMPUTER DATA LINES SYSTEM DIAGNOSTIC CONNECTOR (DLC) (UNDER LEFT SIDE OF DASH) EMERGENCY CALL SYSTEM ANTENNA (CENTER OF HAT SHELF) EMERGENCY CALL SYSTEM BUTTON EMERGENCY CALL SYSTEM CONTROL UNIT (CENTER FRONT TRUNK/CARGO AREA) FRONT SAM CONTROL UNIT W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) FUSE 87 GLOBAL POSITIONING SYSTEM ANTENNA SPLITTER (RIGHT FRONT OF TRUNK/ CARGO AREA) GPS GRY WIRE GRY/BLU WIRE GRY/WHT WIRE HOT AT ALL TIMES INFO MB-INFO, BREAKDOWN ASSISTANCE BUTTON MIKR + MIKR - (-) MULTI-FUNCTION ANTENNA (CENTER REAR OF ROOF) MUTE NCA WIRE OVERHEAD CONTROL PANEL ELECTRONICS (W/O CAN) OVERHEAD CONTROL PANEL CONTROL UNIT RADIO (W/ AUDIO 20) REAR SAM CONTROL MODULE W/ FUSE, RELAY MODULE (RIGHT SIDE OF TRUNK/CARGO AREA) RED/BLU WIRE SHIELD SIG ANT NOT SHIELD 1 2 SOS LED WS LED INFO LED SOS WS INFO CRASH SOUND SYSTEM AMPLIFIER CONTROL UNIT (LEFT SIDE TRUNK/ CARGO AREA) SUPPLEMENTAL RESTRAINT SYSTEM CONTROL UNIT (UNDER FRONT OF CENTER CONSOLE) TEL TELEDIAGNOSIS W/ NAVIGATION W/ SOUND SYSTEM W/O NAVIGATION W/O SOUND SYSTEM YEL WIRE YEL/BLK WIRE YEL/RED WIRE YEL/VIO WIRE

10 9 CAN B L CAN B H 3 2 LWR 7 6 4 5 12 11 10 9 CAN C H CAN C L AUTOMATIC TRANSMISSION MODE BUTTON BLK/PNK WIRE BLU WIRE BLU/WHT WIRE BRN WIRE BRN/RED WIRE COMPUTER DATA LINES SYSTEM EXTERIOR LIGHTS SWITCH FRONT CIGARETTE LIGHTER W/ ASHTRAY ILLUMINATION (W/ SMOKER PACKAGE) FRONT SAM CONTROL UNIT W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) FRONT VEHICLE INTERIOR POWER OUTLET (W/O SMOKER PACKAGE) FUSE 16 FUSE 28 FUSE 5 GRN WIRE GRY WIRE GRY/BLU WIRE GRY/BRN WIRE HOT AT ALL TIMES HOT W/ CIRCUIT 15 RELAY ENERGIZED HOT W/ ENGINE CIRCUIT 87 RELAY ENERGIZED INSTRUMENT CLUSTER INSTRUMENT ILLUMINATION, INSTRUMENT ILLUMINATION BRIGHTNESS CONTROL LWR NCA WIRE PNK/RED WIRE RED WIRE RED/BLU WIRE RED/YEL WIRE SHIFT GATE SYMBOL ILLUMINATION SWITCH ILLUMINATION W/O XENON LAMPS WHT WIRE YEL WIRE

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 IRS OFF IRS LED 11 9 CAN-B H CAN-B L 2 7 8 1 SHIELD MIC 2 GND MIC 1 30 S GB 31 ASS LED ASS OFF 9 10 CAN-B L CAN-B H AMBIENT LAMP AUTOMATIC DIMMING MIRROR BLK WIRE BLU WIRE BRN WIRE BRN/BLK WIRE BRN/GRY WIRE BRN/RED WIRE BRN/WHT WIRE CENTER INTERIOR ROOF) COMPASS MODULE W/ DISPLAY COMPUTER DATA LINES SYSTEM FORWARD AUTOMATIC DIMMING MIRROR LIGHT SENSOR FUSE 46 GARAGE DOOR OPENER GARAGE DOOR OPENER BUTTON 1 GARAGE DOOR OPENER BUTTON 2 GARAGE DOOR OPENER BUTTON 3 GARAGE DOOR OPENER INDICATOR LAMP GRN WIRE GRY WIRE HANDS-FREE SYSTEM MICROPHONE HOT AT ALL TIMES INSIDE REARVIEW MIRROR LEFT READING LAMP LEFT REAR WINDOW GLASS BREAKAGE SENSOR NCA WIRE ORG/ WIRE PNK 17 18 WIRE PNK WIRE RADIO (W/ AUDIO 20) COMAND CONTROL UNIT (W/O AUDIO 20) REAR SAM CONTROL MODULE W/ FUSE, RELAY MODULE REAR WINDOW GLASS BREAKAGE SENSOR REARWARD COMPASS DISPLAY BUTTON AUTOMATIC DIMMING MIRROR LIGHT SENSOR RED WIRE RIGHT READING LAMP RIGHT REAR WINDOW GLASS BREAKAGE SENSOR WHT WIRE YEL WIRE

1 2 3 4 5 6 IRS OFF IRS LED 11 9 CAN-B H CAN-B L 2 7 8 1 SHIELD MIC 2 GND MIC 1 31 ASS LED ASS OFF AUTOMATIC DIMMING MIRROR BLK WIRE BLU WIRE BRN WIRE BRN/GRY WIRE BRN/RED WIRE CAN B L CAN B H COMPASS DISPLAY BUTTON COMPASS MODULE W/ COMPUTER DATA LINES SYSTEM DISPLAY (IF EQUIPPED) FORWARD AUTOMATIC DIMMING MIRROR LIGHT SENSOR FUSE 46 GARAGE DOOR OPENER GARAGE DOOR OPENER BUTTON 1 GARAGE DOOR OPENER BUTTON 2 GARAGE DOOR OPENER BUTTON 3 GARAGE DOOR OPENER INDICATOR LAMP GRN WIRE GRY WIRE GRY/RED WIRE GRY/YEL WIRE HANDS-FREE SYSTEM MICROPHONE HOT AT ALL TIMES INSIDE REARVIEW MIRROR LEFT INTERIOR PROTECTION TRANSMITTER LEFT READING LAMP NCA WIRE ORG/ WIRE PNK 14 15 WIRE PNK WIRE RADIO (W/ AUDIO 20) COMAND CONTROL UNIT (W/O AUDIO 20) REAR SAM CONTROL UNIT W/ FUSE, RELAY MODULE REARWARD AUTOMATIC DIMMING MIRROR LIGHT SENSOR RED WIRE RIGHT AMBIENT READING LAMP LAMP WHT WIRE YEL WIRE

1 2 3 4 5 6 HS(-) ML/K HS(+) ML+ HS(+) MK+ 1 2 CAN B L CAN B H 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 CAN B H CAN B L COMPUTER DATA LINES SYSTEM CONTROL UNIT (IN FRONT PASSENGER FRONT SEAT BACK) FRONT PASSE- NGER SEAT FORE/AFT ADJUSTMENT MOTOR (UNDER FRONT PASSENGER'S SEAT) FRONT PASSE- NGER SEAT HEIGHT ADJUSTMENT MOTOR (UNDER FRONT PASSENGER'S SEAT) FRONT PASSENGER SEAT CONTROL UNIT (UNDER FRONT PASSENGER'S SEAT) FRONT PASSENGER SEAT EASY ENTRY SYSTEM LIMIT SWITCH (IF EQUIPPED) FRONT PASSENGER SEAT LUMBAR SUPPORT FRONT PASSENGER SEAT LUMBAR SUPPORT ADJUSTMENT FRONT PASSENGER SEAT LUMBAR SUPPORT ADJUSTMENT SWITCH GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GRN/VIO WIRE GRY WIRE HV_MOT+ NV_MOT- NV_MOT+ LV_MOT- LV_MOT+ HV_MOT- RED WIRE RED/BLU WIRE RED/GRN WIRE RED/YEL WIRE RIGHT FRONT SEAT ADJUSTMENT SWITCH GROUP (W/ FULLY ELECTRIC SEAT ADJUSTMENT) VIO WIRE VIO/WHT WIRE VIO/YEL WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE YEL WIRE

BLK/RED WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BRN WIRE CIRCUIT 15 RELAY DVD PLAYER (IF EQUIPPED) LEFT REAR DISPLAY, RIGHT REAR DISPLAY EMERGENCY CALL SYSTEM CONTROL UNIT (IF EQUIPPED) FROM FUSE 41 (DIAGRAM FROM FUSE 46 (DIAGRAM FROM FUSE 47 (DIAGRAM 1 OF 5) FROM REAR SAM CONTROL UNIT W/ FUSE, RELAY MODULE FRONT CIGARETTE LIGHTER W/ ASHTRAY ILLUMINATION (W/ SMOKER PACKAGE) FRONT VEHICLE INTERIOR POWER OUTLET (W/O SMOKER PACKAGE) FUEL PUMP CONTROL UNIT FUEL PUMP RELAY FUSE FUSE FUSE 37 FUSE 38 FUSE 39 FUSE 41 FUSE 54 FUSE 59 FUSE 71 FUSE 83 FUSE 84 FUSE 86 FUSE 87 FUSE FUSE GRY WIRE LEFT REAR DOOR CONTROL UNIT NCA WIRE PNK PNK WIRE PNK WIRE REAR BLOWER MOTOR RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/GRY WIRE RED/VIO WIRE RED/WHT WIRE RED/YEL WIRE RELAY 1 RES+ RIGHT FRONT DOOR CONTROL UNIT SEAT ADJUSTMENT RELAY TAILGATE WINDSHIELD WIPER RELAY TO FUSE 42 (DIAGRAM 2 OF 5) TO FUSE 74 (DIAGRAM TO FUSE 85 (DIAGRAM TRAILER RECOGNITION CONTROL UNIT (W/ TRAILER HITCH) W/O W/ SMOKER SMOKER PACKAGE PACKAGE YEL WIRE