Mercedes-Benz C-class W203/S203/CL203 facelift (2004-2008) gry Wiring diagrams

17 18 12 13 CAN-B L CAN-B H CAN-B L CAN-B H 2 1 CAN L CAN H 4 5 CAN L CAN H 56 NSL 6 5 2 4 3 1 R LO BEAM R HI BEAM R FOG L LO BEAM L HI BEAM L FOG 9 10 CAN-B L CAN-B H BLK WIRE BLK/GRN WIRE BLK/PNK WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/BLU WIRE BRN/RED WIRE COMPUTER DATA LINES SYSTEM DIAG EXTERIOR LAMPS FOG LAMP FOG LAMP IND FRONT AXLE SENSOR (RIGHT FRONT WHEEL HOUSE) FRONT PRE-FUSE BOX (AT RIGHT REAR OF ENGINE COMPT) FRONT SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) FUSE 4 GRN WIRE GRN/BLK WIRE GRN/GRY WIRE GRN/PNK WIRE GRN/RED WIRE GRN/WHT WIRE GRY WIRE GRY/BLU WIRE GRY/YEL WIRE HEADLAMP RANGE ADJUSTMENT MOTOR HEADLAMP WASH HIGH BEAM INDICATOR HIGH XENON BEAM XENON BEAM HOT AT ALL TIMES HOT AT ALL TIMES FUSE 62 HOT AT ALL TIMES FUSE 63 HOT IN RUN OR START FUSE 50 HOT IN RUN OR START FUSE 51 IN OUT INSTRUMENT CLUSTER LAMP SWITCH MODULE LEFT FRONT FOG LAMP LEFT FRONT HEADLAMP UNIT LEFT RIGHT MIRROR ADJUST MIRROR FOLD- MIRROR SELECT OVERHEAD CONTROL PANEL CONTROL MODULE PARK HEAD OFF AUTO REAR AXLE SENSOR (RIGHT SIDE OF REAR AXLE) RED WIRE RED/GRN WIRE RED/YEL WIRE RIGHT FRONT FOG LAMP RIGHT FRONT HEADLAMP UNIT SRA WHT WIRE WHT/BLK WIRE WHT/RED WIRE XENON CONTROL HIGH XENON BEAM XENON MODULE BEAM XENON IGNITION MODULE XENON XENON IGNITION CONTROL MODULE MODULE YEL WIRE YEL/BLK WIRE YEL/WHT WIRE

12 11 CAN-B L CAN-B H 3 4 5 ILLUM CAN-B L CAN-B H 7 6 CAN-B L CAN-B H AUTOMATIC TRANSMISSION PROGRAM SELECTOR PUSHBUTTON BLK WIRE BLU WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/BLU WIRE BRN/RED WIRE BRN/YEL WIRE CAN-B L CAN-B H ILLUM CENTER AIR OUTLET ILLUMINATION CLOCK- SPRING COMPUTER DATA LINES SYSTEM EXTERIOR LAMPS FOG LAMP FOG LAMP IND FRONT ASHTRAY ILLUMINATION FRONT CIGAR LIGHTER REAR BLOWER ELECTRONIC SELECTOR WHEEL FRONT PRE-FUSE BOX (RIGHT REAR OF ENGINE COMPT) FRONT SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) FUSE 4 GRN WIRE GRN/BLK WIRE GRN/GRY WIRE GRN/PNK WIRE GRN/RED WIRE GRN/WHT WIRE GRY WIRE GRY/BLU WIRE GRY/YEL WIRE HEADLAMP WASH HOT AT ALL TIMES HOT AT ALL TIMES FUSE 62 HOT AT ALL TIMES FUSE 63 ILLUM ILLUMINATION ILLUMINATION RHEOSTAT IN OUT INSTRUMENT CLUSTER LAMP SWITCH MODULE LEFT AIR OUTLET ILLUMINATION LEFT REAR DOOR CONTROL MODULE LEFT REAR POWER WINDOW SWITCH LEFT RIGHT MB-INFO, BREAKDOWN ASSISTANCE BUTTON GROUP MIRROR FOLD- MIRROR SELECT MIRROR ADJUST NCA WIRE PARK HEAD OFF AUTO RED WIRE RELAY ENERGIZED FUSE 50 RELAY ENERGIZED FUSE 51 RIGHT AIR OUTLET ILLUMINATION RIGHT FRONT DOOR CONTROL MODULE RIGHT FRONT POWER WINDOW SWITCH RIGHT REAR DOOR CONTROL MODULE RIGHT REAR POWER WINDOW SWITCH SOS PUSH BUTTON SWITCH SRA STEERING WHEEL MULTI- FUNCTION SWITCHES YEL WIRE

1 2 3 6 7 8 ESA SW ESA SW ESA SW ESA SW ESA SW ESA SW 10 7 8 9 POS 1 (+) POS 1 (-) 10 7 8 9 POS 2 (+) POS 1 (-) 2 1 CAN L CAN H 4 5 CAN L CAN H 6 7 5 4 CAN-B H CAN-B L 30 31 AUTO DIM BLK WIRE BLK/GRN WIRE BLK/RED WIRE BLK/YEL WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/BLU WIRE BRN/GRY WIRE BRN/RED WIRE BRN/YEL WIRE COMMON COMPUTER DATA LINES SYSTEM DIM DIM HEAT HEAT LIGHT LIGHT EXTERIOR LAMPS FOG LAMP FOG LAMP IND FRONT PRE-FUSE BOX (AT REAR OF ENGINE COMPT) FRONT SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) FUSE 4 FUSE 6 GRN/BLK WIRE GRN/GRY WIRE GRN/PNK WIRE GRN/RED WIRE GRN/WHT WIRE GRY WIRE GRY/BLU WIRE GRY/YEL WIRE HEAD HEADLAMP WASH HEATING ELEMENT HOT AT ALL TIMES HOT AT ALL TIMES FUSE 62 HOT AT ALL TIMES FUSE 63 HOT IN RUN OR START FUSE 50 IN OUT LAMP SWITCH MODULE LEFT EXTERIOR TURN SIGNAL MIRROR LAMP LEFT FRONT DOOR CONTROL MODULE (IN DRIVER'S DOOR) LEFT FRONT DOOR ESA(ESV) SWITCH GROUP LEFT RIGHT MEMORY LOCATION MEMORY STORE MIRROR ADJUST MIRROR FOLD- MIRROR SELECT NCA WIRE NSL PARK OFF AUTO RED WIRE RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE RIGHT EXTERIOR TURN SIGNAL MIRROR LAMP RIGHT FRONT DOOR CONTROL MODULE SH SH- SRA TURN HEATING SIGNAL ELEMENT TURN SIGNAL WHT WIRE YEL/GRN WIRE YEL/WHT WIRE

#1 #2 #3 #4 #5 #6 1 2 3 4 5 6 7 8 9 10 11 12 13 14 (+) (+) (+) (-) (-) (-) 1 2 3 7 8 ESA SW ESA SW ESA SW ESA SW ESA SW 2 1 CAN-B H CAN-B L 6 7 5 CAN-B H CAN-B L 30 BACKREST BLK WIRE BLK/BLU WIRE BLK/RED WIRE BLK/YEL WIRE BLU WIRE BRN WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/RED WIRE BRN/YEL WIRE CAN B L CAN-B H 30 COMPUTER DATA LINES SYSTEM COUPE FRONT (RAISE/ LOWER) FRONT PRE-FUSE BOX (AT REAR OF ENGINE COMPT) FUSE 2 FUSE 22 FUSE 34 GRY WIRE HEAD RESTRAINT (RAISE/ LOWER) HOT AT ALL TIMES INTERIOR FUSE BOX (LEFT END OF DASH) MEMORY LOCATION MEMORY STORE PASSENGER SEAT BACKREST ADJUSTMENT MOTOR PASSENGER SEAT FORWARD/BACK ADJUSTMENT MOTOR PASSENGER SEAT FRONT UP/DOWN ADJUSTMENT MOTOR PASSENGER SEAT HEAD RESTRAINT RAISE/LOWER ADJUSTMENT MOTOR PASSENGER SEAT REAR UP/DOWN ADJUSTMENT MOTOR REAR (RAISE/ LOWER) REAR SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT SIDE TRUNK,CARGO AREA) RED WIRE RED/WHT WIRE RED/YEL WIRE RIGHT FRONT DOOR CONTROL MODULE RIGHT FRONT DOOR ESA (ESV) SWITCH GROUP SEAT (FORWARD/ BACK) SEDAN WAGON VIO WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE YEL WIRE

2 1 CAN-B L CAN-B H 4 5 CAN-B L CAN-B H 6 7 5 4 CAN-B H CAN-B L 30 31 BLK WIRE BLK/GRN WIRE BLK/RED WIRE BLK/YEL WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/BLU WIRE BRN/GRY WIRE BRN/RED WIRE BRN/YEL WIRE COMMON COMPUTER DATA LINES SYSTEM DIM DIM HEAT HEAT LIGHT LIGHT EXTERIOR LAMPS FOG LAMP FOG LAMP IND FRONT PRE-FUSE BOX (AT RIGHT REAR OF ENGINE COMPT) FRONT SAM CONTROL MODULE W/ FUSE, RELAY MODULE (AT LEFT REAR OF ENGINE COMPT) FUSE 21 FUSE 4 FUSE 6 GRN/BLK WIRE GRN/GRY WIRE GRN/PNK WIRE GRN/RED WIRE GRN/WHT WIRE GRY WIRE GRY/BLU WIRE GRY/YEL WIRE HEAD HEADLAMP WASH HEATING ELEMENT HEATING TURN SIGNAL ELEMENT HOT AT ALL TIMES HOT AT ALL TIMES FUSE 62 HOT AT ALL TIMES FUSE 63 HOT AT ALL TIMES INTERIOR FUSE BOX (LEFT END OF DASH) FUSE 22 HOT IN RUN OR START FUSE 50 IN OUT LAMP SWITCH MODULE LEFT EXTERIOR MIRROR TURN SIGNAL LAMP LEFT FRONT DOOR CONTROL MODULE (IN DRIVER'S DOOR) LEFT RIGHT LEFT/ AUTOMATIC RIGHT DIMMING MOTOR MIRROR MIRROR ADJUST MIRROR FOLD- MIRROR SELECT NCA WIRE PARK OFF AUTO RED WIRE RED/GRN WIRE RED/GRY WIRE RED/WHT WIRE RED/YEL WIRE RIGHT EXTERIOR MIRROR TURN SIGNAL LAMP RIGHT FRONT DOOR CONTROL MODULE SH SH- TURN SIGNAL UP/ DOWN MOTOR UP/ LEFT/ DOWN RIGHT MOTOR MOTOR WHT WIRE

1 2 3 4 5 6 7 8 9 10 SW GROUP SW GROUP SW GROUP SW GROUP SW GROUP 1 2 3 6 (-) H SIG 1 H SIG 2 H (-) 1 2 FH T FH H 11 12 CAN-B H CAN-B L 4 5 FH T FH H 6 5 4 1 (+) H SIG 1 H SIG 2 H (-) 6 7 5 4 CAN-B H CAN-B L 30 31 BLK WIRE BLK/BLU WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/VIO WIRE BLK/WHT WIRE BLU WIRE BRN WIRE BRN/GRN WIRE BRN/RED WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM DOOR DRIVER POWER WINDOW SWITCH GROUP FH VR FUSE 21 FUSE 22 FUSE 33 GRN WIRE GRY WIRE GRY/BLU WIRE HOT AT ALL TIMES HOT AT ALL TIMES INTERIOR FUSE BOX (LEFT END OF DASH) FUSE 32 IF EQUIPPED SWITCH LEFT FRONT DOOR CONTROL MODULE (IN DRIVER'S DOOR) LEFT FRONT POWER WINDOW MOTOR (IN DRIVER'S DOOR) LEFT FRONT POWER WINDOW SWITCH LEFT REAR DOOR CONTROL MODULE LEFT REAR POWER WINDOW MOTOR (IN LEFT REAR DOOR) LEFT REAR POWER WINDOW SWITCH REAR SIDE WINDOWS CHILD SAFETY LOCK SWITCH RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRY WIRE RED/WHT WIRE RF W/L RIGHT FRONT DOOR CONTROL MODULE RIGHT FRONT POWER WINDOW MOTOR (IN RIGHT FRONT DOOR) RIGHT FRONT POWER WINDOW SWITCH RIGHT REAR DOOR CONTROL MODULE RIGHT REAR POWER WINDOW RIGHT REAR POWER WINDOW MOTOR (IN RIGHT REAR RIGHT REAR POWER WINDOW SWITCH SW GROUP SW GROUP SW GROUP SW GROUP TRUNK LID RELEASE WHT WIRE YEL WIRE

1 29 30 DIAG 87 31 1 4 5 10 87 CAN-B L CAN-B H DIAG 17 1 15 11 MLS BS CAN L CAN H 2 1 CAN-C L CAN-C H 40 41 CAN C L CAN C H 5 CB 1 6 7 5 2 87 CAN L CAN H DIAG 31 COMPUTER DATA LINES SYSTEM BLK WIRE BRN WIRE BRN/RED WIRE COMPUTER DATA LINES SYSTEM ELECTRONIC SELECTOR LEVER CONTROL MODULE (AT BASE OF GEAR SHIFT ASSEMBLY) ESP, BAS CONTROL MODULE (LEFT SIDE OF ENGINE COMPT) ETC CONTROL MODULE (IF EQUIPPED) (UNDER RIGHT SIDE OF DASH) FRONT PRE-FUSE BOX (AT RIGHT REAR OF ENGINE COMPT) FRONT SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) FUSE 4 FUSE 6 FUSE 56 FUSE 62 GRN WIRE GRN/WHT WIRE GRY WIRE HOT AT ALL TIMES HOT IN RUN, ACC OR START PNK WIRE RED WIRE RED/BLU WIRE RED/VIO WIRE RED/WHT WIRE STOPLAMP SWITCH (ON BRAKE PEDAL SUPPORT) VIO WIRE WHT/BRN WIRE WHT/GRN WIRE YEL WIRE

BELT BELT TENSION SENSOR (IN LEFT FRONT FOOTWELL) BLK WIRE BLK/GRN WIRE BLK/RED WIRE BLK/VIO WIRE BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/PNK WIRE BRN/RED WIRE BRN/VIO WIRE BRN/WHT WIRE BRN/YEL WIRE CAN L CAN-L CAN-H COMPUTER DATA LINES SYSTEM CRASH CRASH SIG 31 31 DRIVER SEAT BELT BUCKLE RESTRAINT SYSTEMS SWITCH DRVR BELT UPFRONT R ETR LF- ETR LF+ ETR RF+ ETR RF- ETR LR- ETR LR+ ETR RR+ ETR RR- PASS BELT FRONT SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) GRN WIRE GRN/YEL WIRE GRY WIRE GRY/BLK WIRE GRY/GRN WIRE LEFT AIRBAGS SENSOR (UNDER LEFT REAR SEAT) LEFT FRONTAL ACCEL- ERATION SENSOR LEFT REAR ETR SQUIB (UNDER LEFT REAR SEAT) PASSENGER SEAT BELT BUCKLE RESTRAINT SYSTEMS SWITCH PNK WIRE PNK/BLK WIRE PRESS. PRESSURE SENSOR (UNDER RIGHT FRONT SEAT) RED WIRE RED/GRN WIRE RED/VIO WIRE RED/YEL WIRE RESTRAINT SYSTEMS CONTROL MODULE (UNDER FRONT OF CENTER CONSOLE) RIGHT AIRBAGS SENSOR (UNDER RIGHT REAR SEAT) RIGHT FRONTAL ACCEL- ERATION SENSOR RIGHT REAR ETR SQUIB (UNDER RIGHT REAR SEAT) SB LF- SB LF+ SB RF+ SB RF- SB LR- SB LR+ SB RR+ SB RR- WB L- WB L+ WB R+ WB R- SIDE L SIDE R UPFRONT L VIO WIRE VIO/BLU WIRE VIO/GRN WIRE VIO/YEL WIRE WEIGHT SENSING SYSTEM (WSS) CONTROL UNIT (UNDER RIGHT FRONT SEAT) WHT WIRE WHT/BLK WIRE WHT/BRN WIRE WHT/GRN WIRE WHT/VIO WIRE WHT/YEL WIRE YEL WIRE

1 2 MOST MOST IN MOST OUT BLU/BLK WIRE BRN WIRE EARLY PRODUCTION LATE PRODUCTION GRN WIRE GRY WIRE HANDS-FREE SYSTEM MICROPHONE GROUP MIC 2+ MIC GND NCA WIRE ORG/ WIRE PNK MIC 1 MIC 3 MIC 4 WIRE PNK WIRE REAR SAM CONTROL UNIT W/ FUSE, RELAY MODULE (LEFT SIDE OF TRUNK/ CARGO AREA) RED/BLK WIRE SHIELD VIO WIRE VOICE CONTROL SYSTEM CONTROL MODULE (WAGON: AT FRONT OF CARGO AREA) WAKE UP 31

1 2 MOST MOST IN MOST OUT BLU/BLK WIRE BRN WIRE EARLY PRODUCTION LATE PRODUCTION GRN WIRE GRY WIRE HANDS-FREE SYSTEM MICROPHONE GROUP MIC 2+ MIC GND NCA WIRE ORG/ WIRE PNK MIC 1 MIC 3 MIC 4 WIRE PNK WIRE REAR SAM CONTROL UNIT W/ FUSE, RELAY MODULE (LEFT SIDE OF TRUNK/ CARGO AREA) RED/BLK WIRE SHIELD VIO WIRE VOICE CONTROL SYSTEM CONTROL MODULE (WAGON: AT FRONT OF CARGO AREA) WAKE UP 31