Mercedes-Benz C-class W204/S204/С204 facelift (2011-2015) front electrical prefuse box (right rear of engine compt) 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 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 GND NTC 1.8L TURBO 11 3 SOLID STATE 2.1L TURBO DIESEL 3.5L 46 26 43 18 REG LEUS 80 33 88 70 57 22 TMOT 31 9 10 CAN-B H CAN-B L BLK/BLU WIRE BLK/RED WIRE BLU GRY/ WIRE BLU/BLK WIRE BLU/GRN WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/RED WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM COOLANT TEMPERATURE SENSOR ENGINE COMPT) ENGINE CONTROLS SYSTEM EXCEPT 2.0L TURBO DIESEL FRONT ELECTRICAL PREFUSE BOX (RIGHT REAR OF ENGINE COMPT) FRONT SAM CONTROL UNIT W/ FUSE, RELAY MODULE (LEFT REAR OF FUSE 12 FUSE 151 FUSE 22 GRN/BLU WIRE GRN/RED WIRE GRY BLU/ WIRE GRY/BLU WIRE HOT AT ALL TIMES HOT W/ ENGINE CIRCUIT 87 RELAY ENERGIZED INTERIOR TEMPERATURE SENSOR W/ INTEGRATED FAN NCA WIRE OVERHEAD CONTROL PANEL ELECTRONICS PURGE CONTROL VALVE (LEFT FRONT OF ENGINE COMPT) RED WIRE RED/BLK WIRE RED/BRN WIRE RED/VIO WIRE RED/WHT WIRE REFRIGERANT COMPRESSOR (LEFT FRONT OF ENGINE) REFRIGERANT PRESSURE SENSOR (BOTTOM LEFT SIDE OF RADIATOR CONDENSER) SOLID STATE VIO/GRN WIRE VIO/WHT WIRE

2 1 31 SIG 3 1 2 LIN 2 31 3 4 W/ POWER GLASS TILTING/SLIDING SUNROOF 5 1 2 4 30 CAN-B L CAN-B H 31 AMBIENT LAMP AUTOMATIC BLK WIRE BLU WIRE BRN WIRE BRN/GRY WIRE BRN/RED WIRE COMPASS DISPLAY BUTTON COMPASS MODULE W/ DISPLAY (IF EQUIPPED) COMPUTER DATA LINES SYSTEM DIMMING MIRROR FORWARD AUTOMATIC DIMMING MIRROR LIGHT SENSOR FRONT ELECTRICAL PREFUSE BOX (RIGHT REAR OF ENGINE COMPT) FRONT SAM CONTROL UNIT W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) FUSE FUSE 2 GARAGE DOOR OPENER GARAGE DOOR OPENER BUTTON 1 GARAGE DOOR OPENER INDICATOR LAMP GARAGE GARAGE DOOR DOOR OPENER OPENER BUTTON 2 BUTTON 3 GRN WIRE GRY WIRE GRY/RED WIRE GRY/YEL WIRE HANDSFREE SYSTEM MICROPHONE HOT AT ALL TIMES HOT W/ QUIESCENT CURRENT CUTOUT RELAY ENERGIZED INSIDE REARVIEW MIRROR LEFT FRONT DOOR CONTROL UNIT LEFT OUTSIDE MIRROR LEFT READING LAMP LIGHT SENSOR (W/O RAIN/LIGHT SENSOR) LIN 2 31 NAVIGATION, SOUND SYSTEMS NCA WIRE ORG/ WIRE PNK WIRE REARWARD AUTOMATIC AUTOMATIC DIMMING DIMMING MIRROR MIRROR LIGHT SENSOR RED/BLU WIRE RED/WHT WIRE RIGHT READING LAMP USED) 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

2 1 CAN-B H CAN-B L AUTOMATIC AIR CONDITIONING CONTROL, OPERATING UNIT BLU WIRE BRN WIRE BRN/RED WIRE COMPUTER DATA LINES SYSTEM FLAT WIRE FLAT WIRE 8 7 FLAT WIRE FLAT WIRE FRONT ELECTRICAL PREFUSE BOX (RIGHT REAR OF ENGINE COMPT) FUSE 152 GRY WIRE GRY/BLU WIRE HOT AT ALL TIMES LEFT CENTER AIR OUTLET SYMBOL ILLUMINATION LEFT FRONT DOOR CENTRAL LOCKING INTERIOR SWITCH LEFT FRONT SIDE AIR OUTLET SYMBOL ILLUMINATION LEFT REAR POWER WINDOW SWITCH NCA WIRE PASSENGER-SIDE POWER WINDOW SWITCH REAR AIR OUTLET SYMBOL ILLUMINATION RED WIRE RIGHT CENTER AIR OUTLET SYMBOL ILLUMINATION RIGHT FRONT DOOR CENTRAL LOCKING INTERIOR SWITCH RIGHT FRONT SIDE AIR OUTLET SYMBOL ILLUMINATION RIGHT REAR POWER WINDOW SWITCH TRUNK LID RELEASE BUTTON W/ AIR OUTLET SYMBOL ILLUMINATION

1 2 FRONT PASSENGER SEAT BACKREST ADJUSTMENT SWITCH BLK WIRE BLK/BLU WIRE BLK/GRY WIRE BLK/VIO WIRE BLK/YEL WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/VIO WIRE BLU/WHT WIRE BRN WIRE BRN/RED WIRE C-CLASS COUPE COMPUTER DATA LINES SYSTEM (C-CLASS SEDAN) DRIVER SEAT BACKREST ADJUSTMENT SWITCH DRIVER SEAT HEIGHT ADJUSTMENT SWITCH DRIVER SEAT BACKREST INCLINATION ADJUSTMENT MOTOR (IN DRIVER'S SEAT BACK) DRIVER SEAT EASY ENTRY SYSTEM LIMIT SWITCH DRIVER SEAT HEIGHT ADJUSTMENT MOTOR (UNDER DRIVER'S SEAT) DRIVER SEAT PARTIALLY ELECTRIC SEAT ADJUSTMENT SWITCH FRONT ELECTRICAL PREFUSE BOX (RIGHT REAR OF ENGINE COMPT) FRONT PASSENGER SEAT EASY ENTRY SYSTEM LIMIT SWITCH FRONT PASSENGER SEAT HEIGHT ADJUSTMENT MOTOR (UNDER FRONT PASSENGER'S SEAT) FRONT PASSENGER SEAT HEIGHT ADJUSTMENT SWITCH FRONT PASSENGER SEAT PARTIALLY ELECTRIC SEAT ADJUSTMENT SWITCH FUSE FUSE 44 FUSE 45 FUSE 60 HOT W/ QUIESCENT CURRENT CUTOUT RELAY ENERGIZED MULTICONTOUR SEAT PNEUMATIC PUMP REAR SAM CONTROL UNIT W/ FUSE, RED WIRE RED/WHT WIRE RELAY MODULE (RIGHT SIDE OF TRUNK/CARGO AREA) SEAT ADJUSTMENT RELAY SIG W/ ECO START/ STOP FUNCTION W/O ECO START/ STOP FUNCTION WHT/BLK WIRE WHT/GRN WIRE