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

1 2 CAN B L CAN B H 9 10 (+) 31 BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLS L BLS H BLS M CAN E L CAN E H 31 31 BLU WIRE BRN WIRE BRN/RED WIRE COMPUTER DATA LINES SYSTEM ELECTRONIC STABILITY PROGRAM CONTROL UNIT (LEFT FRONT OF ENGINE COMPT) FRONT SAM CONTROL UNIT W/ FUSE FUSE 1, RELAY MODULE (LEFT REAR OF ENGINE COMPT) GRN WIRE GRN/WHT WIRE GRY WIRE GRY/WHT WIRE HOT AT ALL TIMES LEFT FRONT DOOR CONTROL MODULE (FRONT OF LEFT FRONT DOOR) LEFT FRONT SIDE MARKER LAMP LEFT OUTSIDE MIRROR NCA WIRE PNK PNK WIRE PNK WIRE PNK/BLU WIRE PNK/GRN WIRE PNK/RED WIRE PNK/WHT WIRE RED WIRE RED/GRN WIRE RIGHT ACTIVE CURVE ILLUMINATION ACTUATOR MOTOR RIGHT ACTIVE CURVE ILLUMINATION POSITION SENSOR RIGHT FRONT DOOR CONTROL MODULE (FRONT OF RIGHT FRONT DOOR) RIGHT FRONT SIDE MARKER LAMP RIGHT FRONT STANDING, PARKING LAMP RIGHT FRONT TURN SIGNAL LAMP RIGHT OUTSIDE MIRROR RIGHT RIGHT FRONT LAMP UNIT FRONT LAMP UNIT RIGHT SIGNAL LAMP ACTUATION MODULE LED STOP LAMP SWITCH (TOP OF BRAKE PEDAL ASSEMBLY) TURN SIGNAL LAMP TURN STANDING/ PARKING LAMP SIGNAL LAMP W/ XENON WHT WIRE

7 6 24 5 GSS, BF RETURN LINE SBE GSS, FA 74 75 COMPUTER DATA LINES SYSTEM CAN E L CAN E H ACOUSTIC TURN SIGNAL LIGHT FUNCTION CHECK ANTI-LOCK BRAKE SYSTEM INDICATOR LAMP BBV HR BBV VL BFS BLK WIRE BLU WIRE BRAKE SYSTEM WARNING LAMP BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE CAN B L CAN B H CAN E H CAN E L CAN-E L CAN-E H COMPUTER DATA LINES SYSTEM COOLANT TEMPERATURE GAUGE COOLANT TEMPERATURE WARNING LAMP DIGITAL CLOCK, OUTSIDE TEMPERATURE INDICATOR DISTRONIC WARNING LAMP (IF EQUIPPED) ELECTRONIC STABILITY PROGRAM WARNING LAMP ENGINE DIAGNOSIS INDICATOR LAMP ESP/ASR OFF WARNING LAMP FRONT FOG LAMPS INDICATOR LAMP FRONT SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) FUEL LEVEL INDICATOR FUEL RESERVE INDICATOR LAMP FUSE 28 FUSE 18 GASOLINE GEAR INDICATOR (PRND) GRN WIRE GRN/WHT WIRE GRY/GRN WIRE GRY/YEL WIRE HIGH BEAM INDICATOR LAMP HOT AT ALL TIMES INSTRUMENT CLUSTER INSTRUMENT ILLUMINATION INSTRUMENT ILLUMINATION BRIGHTNESS CONTROL LEFT TURN SIGNAL IND LAMP LIN 1 LOW BEAM INDICATOR LAMP MULTI-FUNCTION DISPLAY PREGLOW INDICATOR LAMP (DIESEL) RED/GRN WIRE RED/GRY WIRE RED/YEL WIRE RIGHT TURN SIGNAL IND LAMP SEAT BELT WARNING LAMP SERVICE BRAKE INDICATOR LAMP SIG SPEEDOMETER SUPPLEMENTAL RESTRAINT SYSTEM CONTROL UNIT (UNDER FRONT OF CENTER CONSOLE) SUPPLEMENTAL RESTRAINT SYSTEM INDICATOR LAMP TACHOMETER, BRIGHTNESS SENSOR TIRE PRESSURE MONITOR WARNING LAMP (IF EQUIPPED) TRANSMISSION MODE DISPLAY (S) TRAVEL DISTANCE DISPLAY VIO/GRN WIRE WARNING BUZZER YEL WIRE YEL/BLU WIRE YEL/RED WIRE

31 30 7 34 8 CAN B L CAN B H TG R 6 7 CAN C L CAN C H ATA (EDW) FUNCTION INDICATOR AUTOMATIC CHILD SEAT RECOGNITION AIR BAG OFF INDICATOR LAMP BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BLU/WHT WIRE BRAKE FLUID LEVEL SWITCH (IN BRAKE FLUID RESERVOIR) BRN WIRE BRN/BLK WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM DOWNHILL SPEED REGULATION BUTTON (GLK CLASS) ECO START/ STOP FUNCTION BUTTON ELECTRONIC SELECTOR LEVER MODULE CONTROL MODULE (C-CLASS: UNDER CENTER CONSOLE) GRY/YEL WIRE HAZARD WARNING SYSTEM BUTTON LEFT FRONT HEATED SEAT BUTTON LEFT FRONT SEAT VENTILATION BUTTON LEFT FUEL LEVEL INDICATOR SENSOR (IN FUEL TANK) LIN 1 NCA WIRE OFFROAD PROGRAM BUTTON (GLK CLASS) PARKING BRAKE INDICATOR SWITCH (PARKING BRAKE SUPPORT BRACKET) PARKING SYSTEM BUTTON REAR HEAD RESTRAINTS BUTTON REAR SAM CONTROL UNIT W/ FUSE, RELAY MODULE (RIGHT SIDE OF TRUNK/ CARGO AREA) REAR WINDOW ROLLER SUN BLIND BUTTON RED/GRN WIRE RED/GRY WIRE RIGHT FRONT BRAKE PAD WEAR SENSOR (C-CLASS: AT RIGHT FRONT BRAKE ASSEMBLY) RIGHT FRONT HEATED SEAT BUTTON RIGHT FRONT SEAT VENTILATION BUTTON RIGHT FUEL LEVEL INDICATOR SENSOR (IN FUEL TANK) RIGHT REAR BRAKE PAD WEAR SENSOR (AT RIGHT REAR BRAKE ASSEMBLY) STATIONARY HEATER BUTTON TG L UPPER CONTROL PANEL CONTROL UNIT VEHICLE DYNAMICS BUTTON YEL/RED 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 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

AC HOUSING, ADDITIONAL BATTERY ADDITIONAL BATTERY RELAY CIRCUIT 30 ADDITIONAL FUSE ALTERNATOR STARTER BATTERY SENSOR BLK WIRE BLU/WHT WIRE BRN WIRE BRN/BLU WIRE BRN/GRN WIRE COMPT) FROM FUSE 158 (DIAGRAM 1 OF 5) FRONT ELECTRICAL PREFUSE BOX (AT RIGHT REAR OF ENGINE FUSE FUSE 158 160 FUSE 159 161 FUSE 159 FUSE 157 FUSE 160 162 FUSE 162 FUSE 164 FUSE 46 FUSE 47 RES FUSE 60 FUSE 61 FUSE 64 FUSE FUSE FUSE FUSE 154 153 FUSE MODULE CIRCUIT 30 FUSE GLOW OUTPUT STAGE (2.1L TURBO DIESEL) GRY/YEL WIRE MULTICONTOUR SEAT PNEUMATIC PUMP (GLK-CLASS, C-CLASS SEDAN) ON-BOARD ELECTRICAL SYSTEM BATTERY PTC SUPPLEMENTAL HEATER RESTRAINT BOOSTER SYSTEM CONTROL UNIT QUIESCENT CURRENT CUTOUT RELAY REAR SAM CONTROL UNIT W/ FUSE, RELAY REAR WINDOW ANTENNA FM ANTENNA AMPLIFIER, FM, AM, CL (ZV) ANTENNA AMPLIFIER RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/GRY WIRE RED/WHT WIRE RED/YEL WIRE RES+ SPECIAL- PURPOSE VEHICLE MULTIFUNTION CONTROL UNIT SUPPLEMENTAL RESTRAINTS SYSTEM CONTROL UNIT TAILGATE CONTROL UNIT (W/ AUTOMATIC TAILGATE) TO CIRCUIT 15 RELAY (DIAGRAM 2 OF 5) TO DC/AC CONVERTER CONTROL UNIT (DIAGRAM 3 OF 5) TO FRONT SAM CONTROL UNIT W/ FUSE, RELAY MODULE (DIAGRAM 4 OF 5) TO FUSE 150 (DIAGRAM 1 OF 5) TO FUSE 89 (DIAGRAM 2 OF 5) VIO/BLU WIRE W/O ECO START/ STOP FUNCTION W/ ECO START/ STOP FUNCTION WHT/GRN 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

BRN WIRE DC/AC CONVERTER CONTROL UNIT (GLK-CLASS: RIGHT SIDE OF CARGO AREA) DIAGNOSTIC CONNECTOR DRIVER SEAT CONTROL UNIT FROM FUSE 52 (DIAGRAM FROM FUSE 74 (DIAGRAM FROM FUSE 84 (DIAGRAM 2 OF 5) FROM FUSE 87 (DIAGRAM 2 OF 5) FROM REAR SAM CONTROL UNIT W/ FUSE, RELAY MODULE (DIAGRAM 1 OF 5) FRONT PASSENGER SEAT CONTROL UNIT FUSE FUSE 51 FUSE 52 RES FUSE 66 FUSE 67 FUSE 68 FUSE 69 FUSE 70 FUSE 90 RES FUSE 50 FUSE 91 RES FUSE FUSE FUSE FUSE FUSE HEATED REAR WINDOW RELAY FUSE FUSE LEFT FRONT REVERSIBLE EMERGENCY TENSIONING RETRACTOR (IF EQUIPPED) LEFT FRONT SEAT VENTILATION BLOWER REGULATOR (IF EQUIPPED) LOAD COMPARTMENT SOCKET (GLK-CLASS) MEDIA INTERFACE CONTROL UNIT (W/ AUXILIARY JACK) ORG/BLK WIRE ORG/BLU WIRE PNK INVERTER WIRE PNK WIRE PNK/BLK WIRE PNK/BLU WIRE PNK/GRN WIRE REAR BASS SPEAKER AMPLIFIER (W/ SOUND SYSTEM) (GLK-CLASS) RED WIRE RED/BLK WIRE RED/BLU WIRE RED/BRN WIRE RED/GRN WIRE RED/ORG WIRE RED/VIO WIRE RED/WHT WIRE RED/YEL WIRE RELAY 2 RES+ RIGHT FRONT REVERSIBLE EMERGENCY TENSIONING RETRACTOR (IF EQUIPPED) RIGHT FRONT SEAT VENTILATION BLOWER REGULATOR (IF EQUIPPED) SOCKET MICRO SWITCH SOUND SYSTEM AMPLIFIER CONTROL UNIT (IF EQUIPPED) STATIONARY HEATER UNIT (IF EQUIPPED), TIRE PRESSURE MONITOR CONTROL UNIT (IF EQUIPPED) TO FUSE 70 (DIAGRAM 3 OF 5) TO FUSE 73 (DIAGRAM 3 OF 5) TO VEHICLE INTERIOR POWER OUTLET (DAIGRAM 2 OF 5) WEIGHT SENSING SYSTEM (WSS) CONTROL UNIT (IF EQUIPPED)

AUDIO COMAND CONTROL PANEL BACKUP RELAY BLK/BLU WIRE BLU/RED WIRE BRN WIRE CIRCUIT CIRCUIT 15 RELAY ELECTRONIC SELECTOR LEVEL MODULE CONTROL UNIT ENGINE CIRCUIT 87 RELAY FANFARE HORN RELAY FROM FROM FRONT ELECTRICAL PREFUSE BOX (DIAGRAM 1 OF 5) FROM FUSE 15 (DIAGRAM FUSE FUSE 21 FUSE 29 FUSE 30 FUSE 8 FUSE 10 FUSE 9 FUSE FUSE FUSE FUSE 16 GLOVE BOX LAMP/ SWITCH GLOVE BOX SOCKET (IF EQUIPPED) INSTRUMENT PANEL SWITCH GROUP LEFT FRONT LAMP UNIT MOBILE PHONE ELECTRICAL CONNECTOR (IF EQUIPPED), MULTI-FUNCTION CAMERA NCA WIRE OIL COOLER FAN MOTOR RELAY PNK/BLK WIRE PNK/BLU WIRE PNK/GRN WIRE PNK/WHT WIRE PNK/YEL WIRE RED WIRE RED/BLU WIRE RED/BRN WIRE RED/GRN WIRE RED/GRY WIRE RED/VIO WIRE RED/WHT WIRE RED/YEL WIRE RIGHT FRONT LAMP UNIT SECONDARY AIR INJECTION RELAY SUPPLEMENTAL RESTRAINT SYSTEM CONTROL UNIT TO CHASSIS CIRCUIT 87 RELAY (DIAGRAM TO ENGINE CIRCUIT 87 RELAY (DIAGRAM TO FUSE 1 (DIAGRAM TO FUSE 14 (DIAGRAM TO FUSE 17 (DIAGRAM TO FUSE 6 (DIAGRAM UPPER CONTROL PANEL CONTROL UNIT WIPER MOTOR WIPER PARK HEATER (IF EQUIPPED)

1 2 3 4 5 6 7 8 9 10 31/1 15 54 31 LED 31/2 AHK BLK WIRE BLK/GRN WIRE BLK/RED WIRE BLK/WHT WIRE BLU WIRE BRN WIRE BRN/RED WIRE CAN-B H CAN-B L COMPUTER DATA LINES SYSTEM FRONT ELECTRICAL PREFUSE BOX (AT RIGHT REAR OF ENGINE COMPT) FUSE FUSE 53 FUSE 54 FUSE 57 FUSE 58 FUSE 89 GRN WIRE GRY WIRE GRY/YEL WIRE HOT AT ALL TIMES HOT W/ CIRCUIT 15 RELAY ENERGIZED HOT W/ QUIESCENT CURRENT CUTOUT RELAY ENERGIZED LED REAR SAM CONTROL UNIT W/ FUSE, RELAY MODULE (RIGHT SIDE OF TRUNK/CARGO AREA) RED WIRE RED/BLU WIRE RED/GRN WIRE RED/YEL WIRE RFL (+) TRAILER HITCH LOCKING SWITCH (W/ SWIVELING TRAILER HITCH) TRAILER HITCH RELEASE (W/ SWIVELING TRAILER HITCH) TRAILER RECOGNITION CONTROL UNIT TRAILER SOCKET W/O ECO START/ STOP FUNCTION W/ ECO START/ STOP FUNCTION WHT WIRE