Mercedes-Benz C-class W203/S203/CL203 facelift (2004-2008) (under right front door sill) Wiring diagrams

"B" PILLAR) 3 4 SIG 31 30 CAN B L CAN B H 4 5 CAN-B L CAN-B H 4 6 LOW BEAM LOW BEAM 6 9 2 12 PARK LAMP TURN LAMP PARK LAMP TURN LAMP 7 8 TURN SIG TURN SIG ALARM SIGNAL HORN ATA HOOD SWITCH BLK WIRE BLK/ GRN WIRE BLK/GRN WIRE BLK/WHT WIRE BLU WIRE BLU/GRN WIRE BLU/RED WIRE BRN WIRE BRN/BLU WIRE BRN/GRY WIRE BRN/PNK WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM CONTACT SWITCH (AT RIGHT "B" PILLAR) CONTACT SWITCH (SEDAN, WAGON) (AT RIGHT "C" PILLAR) FRONT PRE-FUSE BOX (AT RIGHT REAR OF ENGINE COMPT) FRONT SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) FUSE 2 FUSE 4 GRN WIRE GRN/YEL WIRE GRY/BLK WIRE GRY/RED WIRE HEADLIGHTS SYSTEM HOOD SW HOT AT ALL TIMES HOT AT ALL TIMES FUSE 8 LEFT FRONT DOOR CONTACT SWITCH (AT LEFT LEFT REAR DOOR CONTACT SWITCH NCA WIRE OVERHEAD CONTROL PANEL CONTROL MODULE PAWL ROTARY TUMBLER SWITCH (CENTER REAR OF TAILGATE) (COUPE) (SEDAN) PNK/RED WIRE REAR PANEL CL (ZV) MOTOR REAR SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT SIDE OF TRUNK/CARGO AREA) RED WIRE RED/BLU WIRE RED/GRY WIRE RED/YEL WIRE RIGHT REAR DOOR ROOF DRIVE SYSTEM (COUPE) (AT FRONT CENTER OF ROOF) SCREEN ANTENNA AMPLIFIER MODULE 1 (LEFT REAR OF ROOF) SCREEN ANTENNA AMPLIFIER MODULE 2 SEDAN, COUPE TRUNK LID CONTACT SWITCH (AT CENTER REAR OF TRUNK LID) TRUNK LID EMERGENCY RELEASE SWITCH (SEDAN) (AT REAR OF TRUNK LID) TRUNK LID EXTERNAL OPERATION SWITCH (SEDAN) (IN TRUNK LID) VIO WIRE VIO/BLU WIRE WAGON WHT WIRE YEL WIRE YEL/BLK WIRE

1 6 5 8 7 ESA CAN-C H CAN-C L CAN-B H CAN-B L 11 12 CAN-B H CAN-B L 17 18 12 13 CAN-B L CAN-B H CAN-C L CAN-C H 2 3 DOOR MOTOR DOOR MOTOR 3 4 CAN-B L CAN-B H 41 54 CAN-B H CAN-B L 6 7 5 4 CAN-B H CAN-B L 30 31 8 6 7 3 2 IR REC IR REC IR REC DOOR MOTOR DOOR MOTOR BLK WIRE BRN WIRE BRN/RED WIRE COMPUTER DATA LINES SYSTEM DISPLAY ELECTRONIC STEERING LOCK CONTROL MODULE (ON STEERING COLUMN) ESA FUSE 21 FUSE 22 FUSE 33 GRN WIRE GRN/WHT WIRE HOT AT ALL TIMES HOT AT ALL TIMES INTERIOR FUSE BOX (LEFT END OF DASH) FUSE 32 INSTRUMENT CLUSTER INTERIOR CENTRAL LOCKING SWITCH LEFT FRONT DOOR CL MOTOR (AT REAR OF DRIVER'S DOOR) LEFT FRONT DOOR CONTROL MODULE (IN DRIVER'S DOOR) LEFT FRONT IR RECEIVER UNIT (AT REAR OF LEFT FRONT DOOR) LEFT REAR DOOR CL MOTOR (AT REAR OF LEFT REAR DOOR) LEFT REAR DOOR CONTROL MODULE ME-SFI CONTROL MODULE (AT LEFT REAR OF ENGINE COMPARTMENT) RED WIRE RED/BLK WIRE RED/GRN WIRE RED/WHT WIRE RIGHT FRONT DOOR CL MOTOR (AT REAR OF RIGHT FRONT DOOR) RIGHT FRONT DOOR CONTROL MODULE RIGHT FRONT IR RECEIVER UNIT (AT REAR OF RIGHT FRONT DOOR) RIGHT REAR DOOR CL MOTOR (AT REAR OF RIGHT REAR DOOR) RIGHT REAR DOOR CONTROL MODULE UPPER CONTROL PANEL CONTROL MODULE WHT WIRE WHT/RED WIRE

1 2 9 10 4 31 30 CAN-B L CAN-B H 31 11 12 CAN-B H CAN-B L 4 5 CAN-B L CAN-B H 6 7 CAN-B H CAN-B L BLK WIRE BLU/RED WIRE BRN WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/PNK WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM CONTACT SWITCH (SEDAN, WAGON) (AT RIGHT "C" PILLAR) CTSY LMP EXCEPT WAGON FRONT DOME FRONT PRE-FUSE BOX (AT RIGHT REAR OF ENGINE COMPT) FUSE 2 FUSE 4 GLOVE COMPARTMENT SWITCH, LAMP HOT AT ALL TIMES HOT AT ALL TIMES FUSE 9 LEFT FRONT DOOR CONTACT SWITCH LEFT FRONT DOOR CONTROL MODULE LEFT FRONT DOOR ENTRANCE, EXIT LAMP LEFT FRONT READING LEFT READING LEFT REAR DOOR CONTACT SWITCH (SEDAN, WAGON) (AT LEFT "C" PILLAR) LEFT REAR DOOR CONTROL LEFT VANITY MIRROR LAMP OVERHEAD CONTROL PANEL CONTROL MODULE PNK/RED WIRE REAR DOME REAR DOME LAMP REAR LEFT DOME TRUNK LAMP LAMP REAR SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT SIDE OF TRUNK/CARGO AREA) RED WIRE RED/BLU WIRE RED/GRN WIRE RED/GRY WIRE RED/YEL WIRE RELAY ENERGIZED RIGHT FRONT DOOR CONTACT SWITCH (AT RIGHT "B" PILLAR) RIGHT FRONT DOOR CONTROL MODULE RIGHT FRONT DOOR ENTRANCE, EXIT LAMP RIGHT FRONT READING RIGHT READING RIGHT REAR DOOR RIGHT REAR DOOR CONTROL MODULE RIGHT TRUNK LAMP RIGHT VANITY MIRROR LAMP TRUNK AJAR TRUNK LAMP TRUNK LID CONTACT SWITCH (AT CENTER REAR OF TRUNK LID) VIO/BLU WIRE WAGON YEL WIRE

BATTERY BRN WIRE BRN/WHT WIRE ME-SFI (ME) CONTROL MODULE, DATA LINK CONNECTOR SCREEN ANTENNA AMPLIFIER MODULE 2, SCREEN ANTENNA AMPLIFIER MODULE 1

6 7 5 4 CAN-B H CAN-B L 30 31 7 5 HEAT HEAT 7 5 SH (+) SH (-) AAC PUSHBUTTON CONTROL MODULE, COMFORT AAC PUSHBUTTON CONTROL MODULE BLK WIRE BLK/RED WIRE BLU WIRE BRN WIRE BRN/GRY WIRE BRN/RED WIRE CAN-B H CAN-B L 30 COMPUTER DATA LINES SYSTEM DEFROSTER SWITCH FRONT PASSENGER SIDE DOOR CONTROL MODULE (IN RIGHT FRONT DOOR) FUSE 21 FUSE 22 FUSE 41 GRY WIRE HOT AT ALL TIMES INTERIOR FUSE BOX (LEFT END OF DASH) LEFT EXTERIOR MIRROR LEFT FRONT DOOR CONTROL MODULE (IN DRIVER'S DOOR) NCA WIRE RED WIRE RED/BLU WIRE RED/WHT WIRE RIGHT EXTERIOR MIRROR UPPER CONTROL PANEL CONTROL MODULE WHT WIRE

1 2 3 4 31 30 CAN-B L CAN-B H 4 1 2 30 RF HTD SEAT LF HTD SEAT BLK/GRY WIRE BLK/VIO WIRE BLU WIRE BRN WIRE BRN/RED WIRE COMFORT AAC PUSHBUTTON CONTROL MODULE COMPUTER DATA LINES SYSTEM FUSE 25 FUSE 41 GRN WIRE HOT AT ALL TIMES INTERIOR FUSE BOX (LEFT END OF DASH) LEFT FRONT HEATED SEAT SWITCHES LEFT LEFT FRONT FRONT HEATED HEATED BACKREST SEAT CUSHION CUSHION NCA WIRE RED WIRE RED/BLU WIRE RED/GRN WIRE RIGHT FRONT HEATED BACKREST CUSHION RIGHT FRONT HEATED SEAT CUSHION RIGHT FRONT HEATED SEAT SWITCHES UPPER CONTROL PANEL CONTROL MODULE

"C" PILLAR) 1 2 9 10 31 30 CAN-B L CAN-B H 17 18 12 13 CAN-B L CAN-B H CAN-C L CAN-C H 2 3 4 KPR 87 15 2 3 FUEL CAP FUEL CAP 3 4 CAN-B L CAN-B H 4 5 CAN-B L CAN-B H BLK WIRE BLU WIRE BLU/GRN WIRE BLU/RED WIRE BRN WIRE BRN/BLU WIRE BRN/GRY WIRE BRN/PNK WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM CONTACT SWITCH (SEDAN, WAGON) (AT RIGHT "C" PILLAR) COUPE, SEDAN DISPLAY DOOR CONTACT SWITCH (AT RIGHT "B" PILLAR) DOOR CONTACT SWITCH (SEDAN, WAGON) (AT LEFT FRONT PRE-FUSE BOX (AT RIGHT REAR OF ENGINE COMPT) FUEL FILLER FLAP CL MOTOR (AT RIGHT SIDE OF TRUNK) FUSE 2 FUSE 4 GRN WIRE GRN/WHT WIRE GRN/YEL WIRE HOT AT ALL TIMES INSTRUMENT CLUSTER INTERIOR CENTRAL LOCKING SWITCH LEFT FRONT DOOR CONTACT SWITCH LEFT REAR NCA WIRE OVERHEAD CONTROL PANEL CONTROL MODULE PAWL ROTARY TUMBLER SWITCH (COUPE, SEDAN) (CENTER REAR OF TAILGATE) PNK/RED WIRE REAR PANEL CL (ZV) MOTOR REAR SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT SIDE OF TRUNK/CARGO AREA) RED WIRE RED/BLU WIRE RIGHT FRONT RIGHT REAR DOOR ROOF DRIVE SYSTEM (COUPE) (AT FRONT CENTER OF ROOF) SEDAN, COUPE TRUNK LID CONTACT SWITCH (AT CENTER REAR OF TRUNK LID) TRUNK LID EMERGENCY RELEASE SWITCH (SEDAN) (AT REAR OF TRUNK LID) TRUNK LID EXTERNAL OPERATION SWITCH (SEDAN) (IN TRUNK LID) UPPER CONTROL PANEL CONTROL MODULE VIO WIRE VIO/BLU WIRE WHT WIRE YEL WIRE YEL/BLU WIRE YEL/GRN WIRE

11 12 CAN-B H CAN-B L 11 15 CAN-C H CAN-C L 2 3 DOOR MOTOR DOOR MOTOR 33 34 36 37 42 43 45 46 SS RF SS RF SS LR SS LR SS RR SS RR SS LF SS LF 6 7 5 4 CAN-B H CAN-B L 30 31 8 6 7 3 2 IR REC IR REC IR REC DOOR MOTOR DOOR MOTOR BLK WIRE BLU/BLK WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/YEL WIRE BRN WIRE BRN/RED WIRE COMPUTER DATA LINES SYSTEM ESP, BAS CONTROL MODULE (AT LEFT FRONT OF ENGINE COMPT) FUSE 21 FUSE 22 FUSE 33 GRN WIRE GRN/WHT WIRE HOT AT ALL TIMES HOT AT ALL TIMES INTERIOR FUSE BOX (LEFT END OF DASH) FUSE 32 LEFT FRONT DOOR CL MOTOR (AT REAR OF DRIVER'S DOOR) LEFT FRONT DOOR CONTROL MODULE (IN DRIVER'S DOOR) LEFT FRONT IR RECEIVER UNIT (AT REAR OF LEFT FRONT DOOR) LEFT REAR DOOR CL MOTOR (AT REAR OF LEFT REAR DOOR) LEFT REAR DOOR CONTROL MODULE RED WIRE RED/BLK WIRE RED/GRN WIRE RED/GRY WIRE RED/WHT WIRE RED/YEL WIRE RIGHT FRONT DOOR CL MOTOR (AT REAR OF RIGHT FRONT DOOR) RIGHT FRONT DOOR CONTROL MODULE RIGHT FRONT IR RECEIVER UNIT (AT REAR OF RIGHT FRONT DOOR) RIGHT REAR DOOR CL MOTOR (AT REAR OF RIGHT REAR DOOR) RIGHT REAR DOOR CONTROL MODULE TO WHEEL SPEED SENSORS WHT 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