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

1 2 3 4 (+) (-) 31 (+) 1 2 3 4 5 6 7 8 9 FLAT WIRE FLAT WIRE FLAT WIRE FLAT WIRE FLAT WIRE FLAT WIRE 1 2 5 4 CAN B L CAN B H 10 11 12 FLAT WIRE FLAT WIRE 18 28 ZV SIG 4 30 31 3 SIG CAN B H CAN B L SIG 6 7 ZV-MOT ZV-MOT 7 6 ZV-MOT ZV-MOT BLU WIRE BRN WIRE BRN/GRY WIRE BRN/PNK WIRE BRN/RED WIRE CENTRAL MOTOR LOCKING COMPUTER DATA LINES SYSTEM FLAT WIRE FLAT WIRE FLAT WIRE GRN WIRE GRN/BLU WIRE GRN/YEL WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE LEFT FRONT DOOR CENTRAL LOCKING INTERIOR SWITCH LEFT FRONT DOOR DOOR HANDLE ILLUMINATION LEFT FRONT DOOR EXIT, WARNING LAMP LEFT FRONT DOOR HANDLE RECESS ILLUMINATION (W/ INTERIOR LIGHTS PACKAGE) LEFT REAR DOOR CONTROL UNIT (REAR OF LEFT REAR DOOR) LEFT REAR DOOR DOOR HANDLE ILLUMINATION (W/ INTERIOR LIGHTS PACKAGE) LEFT REAR DOOR EXIT, WARNING LAMP (W/ INTERIOR LIGHTS PACKAGE) LEFT REAR DOOR HANDLE RECESS ILLUMINATION (W/ INTERIOR LIGHTS PACKAGE) LEFT REAR DOOR LOCK REAR SAM CONTROL MODULE W/ FUSE, RELAY MODULE (RIGHT SIDE OF TRUNK/ CARGO AREA) RED WIRE RED/GRY WIRE RED/WHT WIRE RIGHT REAR DOOR CONTROL UNIT (REAR OF RIGHT REAR DOOR) RIGHT REAR DOOR HANDLE RECESS ILLUMINATION (W/ INTERIOR LIGHTS PACKAGE) RIGHT REAR DOOR LOCK ROTARY TUMBLER SWITCH TAILGATE CONTROL BUTTON (W/ AUTOMATIC TAILGATE, KEYLESS GO) TANK CAP CENTRAL LOCKING MOTOR (RIGHT SIDE OF TRUNK/CARGO AREA) TRUNK LID RELEASE/DRIVER TAILGATE CONTROL BUTTON W/ INTERIOR LIGHTS PACKAGE W/ KEYLESS W/O KEYLESS W/O KEYLESS W/ KEYLESS

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

3 2 CAN-C H CAN-C L 30 31 CAN-B H CAN-B L 4 3 2 1 30 31 CAN E H CAN E L 5 7 LWR BLK/BLU WIRE BLK/PNK WIRE BLU WIRE BLU/WHT WIRE BRN WIRE BRN/BLK WIRE BRN/RED WIRE COMBINATION SWITCH COMPT) COMPUTER DATA LINES SYSTEM EXTERIOR LIGHTS SWITCH FRONT ELECTRICAL PREFUSE BOX (AT RIGHT REAR OF ENGINE COMPT) FRONT FOG LAMP BUTTON FRONT FOG LAMP IND LAMP FRONT SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) FUSE FUSE 13 FUSE 29 FUSE 30 FUSE 5 GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GRN/WHT WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/PNK WIRE HEADLAMP FLASHER/ HIGH BEAM SWITCH HEADLAMP RANGE ADJUSTMENT ACTUATOR MOTOR HEADLAMP RANGE CONTROLLER (W/ HEADLAMP RANGE ADJUSTMENT FOR HALOGEN HEADLAMPS) HIGH BEAM IND LAMP HIGH BEAM LOW BEAM HEADLAMP RANGE ADJUSTMENT ACTUATOR MOTOR HOT AT ALL TIMES HOT W/ CIRCUIT 15 RELAY ENERGIZED HOT W/ QUIESCENT CURRENT CUTOUT RELAY ENERGIZED INSTRUMENT CLUSTER LEFT DAYTIME RUNNING LAMPS HEADLAMP (IF EQUIPPED) LEFT HIGH BEAM FOG LAMP (IF EQUI- PPED) LEFT REAR LAMP UNIT LEFT RIGHT FOG FRONT LAMP UNIT LAMP (IF EQUI- PPED) LOW BEAM LOW BEAM IND LAMP LOW BEAM SWITCH LWR LWR 31 MODULE CONTROL UNIT PARKING BRAKE INDICATOR SWITCH (ON PARKING BRAKE SUPPORT BRACKET) PNK/RED WIRE REAR FOG LAMP REAR FOG LAMP BUTTON REAR FOG LAMP IND LAMP 12 13 17 18 CAN E L CAN E H CAN B L CAN B H RED WIRE RED/BLU WIRE RED/WHT WIRE RIGHT DAYTIME RUNNING LAMPS HEADLAMP (IF EQUIPPED) RIGHT FRONT LAMP UNIT RIGHT REAR LAMP UNIT SIG SWITCH ILLUMINATION W/ ECO START/STOP FUNCTION W/ HEADLAMP RANGE ADJUSTMENT FOR HALOGEN HEADLAMPS W/O ECO START/STOP FUNCTION WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

12 13 17 18 CAN E L CAN E H CAN B L CAN B H 30 31 CAN E H CAN E L ABBL-R 31 15 ABBL-L BLK/BLU WIRE BRN WIRE BRN/RED WIRE CAN B H CAN B L COMBINATION SWITCH COMPUTER DATA LINES SYSTEM FRONT ELECTRICAL PREFUSE BOX (AT RIGHT REAR OF ENGINE COMPT) FRONT FOG LAMPS INDICATOR LAMP FUSE GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GRN/WHT WIRE GRN/YEL WIRE HEADLAMP CONTROL UNIT HEADLAMP FLASHER/ HIGH BEAM SWITCH HIGH BEAM INDICATOR HOT AT ALL TIMES ILLUMINATION INSTRUMENT CLUSTER LEFT ACTIVE CURVE ILLUMINATION ACTUATOR MOTOR LEFT ACTIVE CURVE ILLUMINATION POSITION SENSOR LEFT CORNERING LEFT FRONT LAMP UNIT LEFT HEADLAMP RANGE ADJUSTMENT ACTUATOR MOTOR LEFT LIGHT DISTRIBUTION ACTUATOR MOTOR LEFT LIGHT DISTRIBUTION POSITION SENSOR LEFT REAR LAMP UNIT LEFT XENON BULB W/ INTEGRATED IGNITION MODULE LEFT XENON LIGHT POWER SUPPLY MODULE (BEHIND LEFT SIDE OF FRONT BUMPER) LOW BEAM INDICATOR LAMP LOW BEAM SWITCH PNK/WHT WIRE REAR FOG LAMP REAR FOG LAMP INDICATOR RED WIRE RED/BLU WIRE RIGHT DAYTIME RUNNING LAMPS HEADLAMPS (IF EQUIPPED) RIGHT REAR LAMP UNIT SIG SIG 31 31 CAN G L CAN G H STEERING COLUMN MODULE CONTROL UNIT W/O ECO START/STOP FUNCTION WHT/BLU WIRE WHT/RED WIRE WHT/YEL WIRE YEL/BLK WIRE YEL/WHT WIRE

BLK/YEL WIRE BLU/RED WIRE BRN WIRE DRIVER SEAT LUMBAR SUPPORT ADJUSTMENT CONTROL UNIT (IN DRIVER'S FRONT SEAT BACK) DRIVER SEAT LUMBAR SUPPORT ADJUSTMENT SWITCH FRONT ELECTRICAL PREFUSE BOX (AT RIGHT REAR OF ENGINE COMPT) FRONT PASSENGER SEAT LUMBAR SUPPORT ADJUSTMENT SWITCH FUSE GRN/BLK WIRE GRN/BLU WIRE GRN/VIO WIRE HOT W/ QUIESCENT CURRENT CUTOUT RELAY ENERGIZED REAR SAM CONTROL UNIT W/ FUSE, RELAY MODULE (RIGHT SIDE OF TRUNK/CARGO AREA) RED WIRE SEAT ADJUSTMENT RELAY W/ ECO START/ STOP FUNCTION W/O ECO START/ STOP FUNCTION

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

-1 +2 1 2 3 4 5 6 7 8 9 10 GND GND 1-2, 3-4, 5-6, 7-8) 4 2 1 5 31 CAN B H CAN B L 30 BLK/WHT WIRE BLU WIRE BLU/WHT WIRE BRN WIRE BRN/RED WIRE BRN/YEL WIRE CAN B H CAN B L CAN B L CAN B H COMPUTER DATA LINES SYSTEM FRONT SAM CONTROL UNIT W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) FUSE 2 FUSE 61 GND SIG GRN/BLK WIRE GRN/BLU WIRE GRN/GRY WIRE GRN/WHT WIRE GRN/YEL WIRE GRY/BLU WIRE GRY/PNK WIRE HFE HOT AT ALL TIMES HOT W/ QUIESCENT CURRENT CUTOUT RELAY ENERGIZED LEFT FRONT DOOR CONTROL UNIT (FRONT OF LEFT FRONT DOOR) NCA WIRE ORG/ WIRE ORG/GRN WIRE REAR SAM CONTROL UNIT W/ FUSE, RELAY MODULE (RIGHT SIDE OF TRUNK) RED/WHT WIRE RED/YEL WIRE RIGHT TAILGATE CONTROL OBSTRUCTION SENSOR STRIP (RIGHT SIDE OF TAILGATE) SIG SIG SIG TAILGATE CENTRAL LOCKING MOTOR TAILGATE CONTROL BUTTON (W/ AUTOMATIC TAILGATE, KEYLESS GO SYSTEM) TAILGATE CONTROL DRIVE UNIT TAILGATE CONTROL MAGNETIC CLUTCH TAILGATE CONTROL POSITION SENSOR TAILGATE CONTROL TAILGATE ELECTRIC CONTROL MOTOR HALL SENSOR TAILGATE CONTROL UNIT (GLK-CLASS) TAILGATE CONTROL WARNING BUZZER (BOTTOM OF TAILGATE) TAILGATE EXTERNAL OPERATION SWITCH TAILGATE LOCKING ELEMENT (GLK-CLASS) TRUNK LID EMERGENCY OPENING SWITCH (TRUNK LID) W/ AUTOMATIC TAILGATE W/O AUTOMATIC TAILGATE WHT WIRE WHT/BLU WIRE WHT/YEL WIRE YEL WIRE

AIR CONDITIONING SYSTEM BLK WIRE BLK/BLU WIRE BLK/RED WIRE BLU WIRE BLU/BRN WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/GRY WIRE BRN/ORG WIRE BRN/RED WIRE BRN/VIO WIRE BRN/WHT WIRE BRN/YEL WIRE CAN C H CAN E H CAN I H COMPUTER DATA LINES SYSTEM COOLANT TEMPERATURE WARNING LAMP COOLING FANS SYSTEM CRASH CYLINDER 1 FUEL INJECTION CYLINDER 2 FUEL INJECTION CYLINDER 3 FUEL INJECTION DST EKPR ENGINE CIRCUIT 87 RELAY ENGINE DIAGNOSIS INDICATOR LAMP EXP FRONT SAM CONTROL MODULE FUEL TANK PRESSURE SENSOR (IN FUEL TANK) FUSE FUSE FUSE FUSE GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GRN/BRN WIRE GRN/GRY WIRE GRN/WHT WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/GRN WIRE GRY/PNK WIRE GRY/VIO WIRE GRY/WHT WIRE INSTRUMENT CLUSTER ME-SFI (ME) CONTROL MODULE (LEFT SIDE OF ENGINE) ORG/ WIRE PNK/BLU WIRE PNK/GRN WIRE PNK/RED WIRE PNK/WHT WIRE RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/GRY WIRE RED/VIO WIRE RED/WHT WIRE VIO WIRE VIO/BLU WIRE VIO/BRN WIRE VIO/GRN WIRE VIO/WHT WIRE W/ ECO START/ STOP FUNCTION W/ FUSE/ RELAY MODULE (LEFT REAR OF ENGINE COMPT) W/ STRATIFIED CHARGE W/O STRATIFIED CHARGE WHT/BLK WIRE WHT/BRN WIRE WHT/GRY WIRE WHT/VIO WIRE WHT/YEL WIRE YEL/BLU WIRE YEL/BRN WIRE YEL/GRY WIRE

BLK WIRE BLK/BLU WIRE BLK/WHT WIRE BLU WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/GRY WIRE BRN/RED WIRE BRN/VIO WIRE BRN/WHT WIRE BRN/YEL WIRE CAN C H CAN C L COMPUTER DATA LINES SYSTEM E RDS EKP-EC-U EKP-EC-V EKP-EC-W FUEL PRESSURE SENSOR GRN/BLU WIRE GRN/GRY WIRE GRN/PNK WIRE GRN/WHT WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/GRN WIRE GRY/PNK WIRE GRY/RED WIRE GRY/WHT WIRE HOT FILM MASS AIR FLOW SENSOR (W/ STRATIFIED CHARGE) (ON INTAKE AIR DUCT) IGNITION COILS (CYLINDER 4, 5, 6: TOP OF LEFT CYLINDER BANK) LEFT EXHAUST CAMSHAFT SOLENOID LEFT EXHAUST CAMSHAFT TO SPARK HALL SENSOR PLUGS (FRONT OF LEFT CYLINDER BANK) LEFT INTAKE CAMSHAFT HALL SENSOR (FRONT OF LEFT CYLINDER BANK) LEFT INTAKE CAMSHAFT SOLENOID NCA WIRE ORG/ WIRE PNK WIRE PNK/BLK WIRE PNK/BLU WIRE PNK/GRN WIRE PNK/WHT WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/GRY WIRE RED/WHT WIRE TO SPARK PLUGS VIO WIRE VIO/BLU WIRE VIO/BRN WIRE VIO/WHT WIRE VIO/YEL WIRE W/ ETHANOL FUEL W/O ETHANOL FUEL WHT WIRE WHT/BRN WIRE WHT/PNK WIRE YEL/BLU WIRE YEL/GRY WIRE YEL/RED WIRE YEL/WHT WIRE

BLK WIRE BLK/BLU WIRE BLK/VIO WIRE BLK/YEL WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/RED WIRE BLU/YEL WIRE BRN WIRE BRN/BLK WIRE BRN/GRY WIRE BRN/VIO WIRE BRN/WHT WIRE BRN/YEL WIRE GRN/BLU WIRE GRN/PNK WIRE GRN/WHT WIRE GRN/YEL WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/GRN WIRE GRY/ORG WIRE GRY/PNK WIRE GRY/RED WIRE GRY/WHT WIRE IGNITION COILS (CYLINDER 1, 2, 3: TOP OF RIGHT CYLINDER BANK) NCA WIRE ORG/ WIRE PNK/BLK WIRE PNK/BLU WIRE PNK/WHT WIRE RED/BLU WIRE RED/GRN WIRE RED/GRY WIRE RED/WHT WIRE RIGHT EXHAUST CAMSHAFT HALL SENSOR (FRONT OF RIGHT CYLINDER BANK) RIGHT EXHAUST CAMSHAFT SOLENOID RIGHT INTAKE CAMSHAFT HALL SENSOR (FRONT OF RIGHT CYLINDER BANK) RIGHT INTAKE CAMSHAFT SOLENOID TO SPARK PLUGS VIO WIRE VIO/BLU WIRE VIO/YEL WIRE WHT/BRN WIRE WHT/PNK WIRE WHT/RED WIRE YEL/BLU WIRE YEL/GRN WIRE YEL/GRY WIRE YEL/RED WIRE YEL/WHT WIRE