Mercedes-Benz S-class W220 (1998-2005) (at left door sill) Wiring diagrams

1 11 8 5 20 19 15 CAN-B L CAN-B H EDW LF DOOR RF DOOR LR DOOR RR DOOR 1 11 CAN-B H CAN-B L 1 2 1 CAN-B L CAN-B H 1 2 2 CAN-B L CAN-B H 1 2 CAN B L CAN B H 3 4 1 CAN-B L CAN-B H 3 4 2 CAN-B H CAN-B L 3 4 7 8 CAN-B L CAN-B H CAN-B H CAN-B L 6 7 3 4 CAN-B L CAN-B H EDW ALARM SIREN (W/ AUXILIARY BATTERY) (REAR OF LEFT FRONT WHEELWELL) ANTI- TOW RELAY ANTI-TOW ATA (EDW) INCLINATION SENSOR (BENEATH RIGHT REAR SEAT) ATA HOOD SWITCH (FRONT CENTER OF ENG COMPT) BLK WIRE BLK/RED WIRE BLU/RED WIRE BRN WIRE BRN/BLK WIRE BRN/RED WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM ENGINE CONTROL MODULE (ME-SFI) (RIGHT REAR CORNER OF ENGINE COMPT) FUSE 2 FUSE 51 GRN WIRE GRN/WHT WIRE GRY WIRE GRY/BLK WIRE GRY/RED WIRE GRY/VIO WIRE HOOD HOT AT ALL TIMES LEFT FOOTWELL) LEFT FRONT DOOR CONTROL MODULE (IN DOOR) LEFT FRONT DOOR SWITCH LEFT FRONT IR RECEIVER (IN HANDLE) LEFT FRONT SAM CONTROL MODULE (IN LEFT FRONT FUSE/RELAY BOX) LEFT REAR DOOR SWITCH OVERHEAD CONTROL PANEL CONTROL MODULE (ABOVE CENTER REARVIEW MIRROR) REAR FUSE/ RELAY MODULE (UNDER RIGHT REAR SEAT) REAR SAM CONTROL MODULE (BELOW RIGHT REAR SEAT) RED WIRE RED/WHT WIRE RIGHT FRONT DOOR CONTROL MODULE (IN DOOR) RIGHT FRONT DOOR SWITCH RIGHT FRONT IR RECEIVER (IN HANDLE) RIGHT FRONT SAM CONTROL MODULE (IN RIGHT FRONT FUSE/RELAY BOX) RIGHT REAR DOOR SWITCH TERMINAL BLOCK, FUSE BOX TRNK TRUNK LID MICRO SWITCH TS/IMS/ATA FUNCTION INDICATOR SWITCH ULTRASONIC ECHOLOT SENSOR UPPER CONTROL FIELD CONTROL MODULE (TOP CENTER OF DASH) VIO WIRE WHT WIRE WHT/GRN WIRE WHT/PNK WIRE

1 2 2 6 7 4 CAN-B L CAN-B H 2 13 3 REFRIG TEMP SENS SIG REFRIG TEMP SENS GND A/C SYSTEM BLOWER UNIT AAC MULTIFUNCTION SENSOR (RIGHT REAR OF ENG COMPT) AAC PUSHBUTTON CONTROL MODULE (FRONT CENTER CONSOLE) AAC SUN SENSOR BLK WIRE BLK/BLU WIRE BLK/PNK WIRE BLOWER MOTOR BLOWER REGULATOR BLU WIRE BRN WIRE BRN/GRN WIRE BRN/RED WIRE BRN/VIO WIRE BRN/WHT WIRE BRN/YEL WIRE CAN B L CAN B H COCKPIT FUSE BOX (2004-5) (RIGHT SIDE OF DASH) COMPUTER DATA LINES SYSTEM COOLANT CIRCULATION PUMP ENGINE CONTROL MODULE (ME-SFI) (RIGHT REAR OF ENG COMPT) ENGINE/CLIMATE CONTROL ELECTRIC COOLING FAN (FRONT CENTER OF ENGINE) EVAPORATOR TEMPERATURE SENSOR FUSE 23 FUSE 82 FUSE 33 FUSE 47 FUSE 68 GRN WIRE GRY/GRN WIRE GRY/RED WIRE GRY/YEL/VIO WIRE HEATER SUPPLY UNIT HOT AT ALL TIME HOT AT ALL TIMES HOT AT ALL TIMES REAR FUSE/ RELAY MODULE (UNDER RIGHT REAR SEAT) FUSE 69 HOT IN ON OR START LEFT DUOVALVE LEFT FRONT FUSE/RELAY MODULE (2003) (LEFT REAR OF ENGINE COMPT) LEFT FRONT SAM CONTROL MODULE (IN FUSE/RELAY BOX, LEFT SIDE) LEFT REAR HEATER CORE TEMPERATURE SENSOR (W/REAR A/C) NCA WIRE REAR A/C ELECTRONIC BLOWER REGULATOR (W/REAR A/C) REAR BLOWER MOTOR (W/REAR A/C) REAR EVAPORATOR TEMPERATURE SENSOR (W/REAR A/C) RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE RIGHT DUOVALVE RIGHT FRONT SAM CONTROL MODULE (IN FUSE RELAY BOX, RIGHT SIDE) RIGHT FUSE/ FRONT RELAY MODULE (LEFT REAR OF ENGINE COMPT) RIGHT HEATER CORE TEMPERATURE SENSOR RIGHT REAR HEATER CORE TEMPERATURE SENSOR (W/REAR A/C) SOLID STATE TERMINAL BLOCK, FUSE BLOCK (CIRCUIT 30, 61) FUSE 3 VIO WIRE WHT WIRE YEL WIRE YEL/BLU WIRE

ACTIVE CHARCOAL FILTER FLAP ADJUSTMENT MOTOR AIR DISTRIBUTION (UP/DOWN) ACTUATOR MOTOR (W/REAR A/C) (BEHIND CENTER OF DASH) BLK WIRE BLK/BRN/VIO WIRE BLK/PNK WIRE BLU WIRE BRN WIRE BRN/GRN WIRE BRN/RED WIRE BRN/VIO WIRE CAN-BL CAN-BH COMPUTER DATA LINES SYSTEM COOLANT CIRCULATION PUMP ELECTRONIC CENTER AIR OUTLET CONTROL MODULE (CENTER OF DASH) ELECTRONIC STEPPER MOTOR CONTROL MODULE (IN CENTER CONSOLE) FRESH AIR/ RECIRCULATED AIR ACTUATOR MOTOR GRN WIRE GRY WIRE GRY/BLU WIRE LEFT AIR OUTLET ILLUM- INATION LEFT CENTER VENT DIVERTER FLAP ACTUATOR MOTOR LEFT CENTER VENT TEMPERATURE CONTROL ACTUATOR MOTOR LEFT DEFROSTER VENT FLAP ACTUATOR MOTOR LEFT DUOVALVE LEFT FOOTWELL FLAP ACTUATOR MOTOR NCA WIRE PNK WIRE REAR A/C CONTROL MODULE (W/REAR A/C) (FRONT CENTER CONSOLE) REAR AUXILIARY HEATER SUPPLY UNIT (W/REAR A/C) REAR REFRIGERANT SHUT-OFF VALVE (W/REAR A/C) (AT LEFT FRONT WHEELHOUSE) RED WIRE RED/BLU WIRE RED/WHT WIRE RIGHT AIR OUTLET ILLUM- INATION RIGHT CENTER VENT DIVERTER FLAP ACTUATOR MOTOR RIGHT CENTER VENT TEMPERATURE CONTROL ACTUATOR MOTOR RIGHT DEFROSTER VENT FLAP ACTUATOR MOTOR RIGHT DUOVALVE RIGHT FOOTWELL FLAP ACTUATOR MOTOR SOLID STATE VIO WIRE WHT WIRE YEL WIRE

1 11 CAN-B L CAN-B H 1 2 CAN B L CAN B H 1 2 HKL HKL 1 2 HKS HKS 5 20 19 15 LF DOOR RF DOOR LR DOOR RR DOOR BLK WIRE BLK/GRN WIRE BLU WIRE BLU/WHT WIRE BRN WIRE BRN/BLK WIRE BRN/RED WIRE BRN/WHT WIRE CAN B L CAN B H COMPUTER DATA LINES SYSTEM GRN WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/GRN WIRE GRY/RED WIRE GRY/VIO WIRE GRY/YEL WIRE HOT AT ALL TIMES REAR FUSE/RELAY MODULE (UNDER RIGHT REAR SEAT) FUSE 64 LEFT FRONT BACKREST HEATER ELEMENT LEFT FRONT DOOR SWITCH LEFT FRONT MULTI-CONTOUR BACKREST CONTROL MODULE (UNDER LEFT FRONT SEAT) LEFT FRONT MULTI-CONTOUR BACKREST SWITCH LEFT FRONT SEAT ADJUSTMENT CONTROL MODULE (UNDER LEFT FRONT SEAT) LEFT FRONT SEAT CUSHION HEATER ELEMENT LEFT FRONT SEAT CUSHION VENTILATION MOTOR GROUP LEFT FRONT SEATBACK VENTILATION MOTOR GROUP LEFT REAR DOOR SWITCH PASSIVE RESTRAINT SYSTEM REAR SAM CONTROL MODULE (UNDER RIGHT REAR SEAT) RED WIRE RED/BRN WIRE RED/WHT WIRE RED/YEL WIRE RIGHT FRONT DOOR SWITCH RIGHT REAR DOOR SWITCH SUPPLEMENTAL RESTRAINTS SYSTEM TRNK TRUNK LID MICRO SWITCH VIO WIRE WHT WIRE YEL WIRE

AIR PUMP, RADIO INTERFERENCE SUPPRESSION CAPACITORS AT RIGHT REAR OF TRUNK) BATTERY BLK WIRE BRN WIRE LEFT "C" PILLAR) REAR WINDOW DEFROSTER ELEMENT SOUND AMPLIFIER, NAVIGATION PROCESSOR, CD CHANGER, SDAR CONTROL UNIT SUCTION COOLING FAN CONTROL MODULE, AIRMATIC COMPRESSOR UNIT

1 2 1 CAN-B L CAN-B H 1 2 TRUNK LID SW 1 5 11 15 19 20 3 15 16 4 CAN-B L LF DR SW CAN-B H RR DR SW LR DR SW RF DR SW 31 31 K-LINE AMBIENT LAMP BLK (BLK/WHT OR BRN/YEL) WIRE BLK (BRN/BLK OR GRN/RED) WIRE BLK (BRN/RED OR GRN/BLU) WIRE BLK (BRN/WHT) WIRE BLK WIRE BLU WIRE BLU/YEL WIRE BRN (OR BLK) WIRE BRN WIRE BRN/BLK WIRE BRN/RED WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM GRN WIRE GRN/RED WIRE GRN/YEL WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/RED WIRE GRY/VIO WIRE HHS 30 30 INTERIOR REARVIEW MIRROR ASSEMBLY INTERIOR, VANITY MIRROR LAMP LEFT FRONT DOOR SWITCH LEFT FRONT LEFT FRONT VANITY MIRROR VANITY ILLUMINATION MIRROR LAMP SWITCH LEFT READING LAMP LEFT REAR DOOR SWITCH LL L A-SP 1 A-SP 2 31 31 LL R OVERHEAD CONTROL PANEL CONTROL MODULE (ABOVE CENTER REARVIEW MIRROR) PNK/BLK WIRE PNK/RED WIRE PNK/VIO WIRE RAIN/LIGHT SENSOR (AT TOP CENTER OF WINDSHIELD) READING INTERIOR LAMP, VANITY MIRROR LAMP LEFT REAR DOME LAMP READING LAMP READING LAMP SWITCH READING VANITY LAMP MIRROR SWITCH LAMP SWITCH REAR FUSE, RELAY MODULE REAR SAM CONTROL MODULE (UNDER RIGHT REAR SEAT) RED WIRE RIGHT FRONT DOOR SWITCH RIGHT FRONT VANITY MIRROR ILLUMINATION SWITCH RIGHT FRONT VANITY MIRROR LAMP RIGHT READING LAMP RIGHT REAR DOME LAMP RIGHT REAR DOOR SWITCH TRUNK LAMP TRUNK LID AMBIENT LAMP TRUNK LID MICRO SWITCH VANITY MIRROR LAMP SWITCH WHT WIRE YEL/GRN WIRE YEL/WHT WIRE

1 2 2 CAN-B L CAN-B H 1 2 3 4 3 (-) AL (-) AL (+) (+) 12 13 17 18 CAN-C L CAN-C H CAN-B L CAN-B H 3 4 1 CAN-B L CAN-B H 30 R FAN 31 E/A BLU WIRE BLU/GRN WIRE BLU/GRY WIRE BRN WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/RED WIRE BRN/YEL WIRE CAN-B L CAN-B H 31 30 RK PL FL COMPUTER DATA LINES SYSTEM DRIVER SIDE POWER WINDOW SWITCH GROUP ELECTRONIC CENTER AIR OUTLET CONTROL MODULE (CENTER OF DASH) EXTERIOR LAMP SWITCH GLOVE COMPARTMENT LOCK ILLUMINATION GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GRN/BRN WIRE GRN/GRY WIRE GRN/RED WIRE GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE GRY/BLU WIRE GRY/RED WIRE GRY/VIO WIRE INSTRUMENT CLUSTER INSTRUMENT ILLUMINATION INSTRUMENT/SEARCHLAMP ILLUMINATION BRIGHTNESS CONTROL REGULATOR LEFT AIR OUTLET ILLUMINATION LEFT FRONT DOOR CONTROL MODULE (IN LEFT FRONT DOOR) LEFT FRONT DOOR ENTRANCE, EXIT LAMP LEFT FRONT DOOR HANDLE ILLUMINATION LEFT FRONT DOOR LOCK SWITCH (CF) LEFT FRONT FUSE/RELAY MODULE LEFT FRONT SAM CONTROL MODULE (IN LEFT FRONT FUSE/RELAY BOX) LOCK NCA WIRE NSL REAR AIR OUTLET ILLUMINATION RED/BLU WIRE RED/GRN WIRE RED/YEL WIRE RIGHT AIR OUTLET ILLUMINATION SRA SRA 30 NSL NS PR NS PR TELE AID SYSTEM TERMINAL UNLOCK WHT WIRE

1 2 3 4 3 (-) AL (-) AL (+) (+) 1 2 7 5 2 CAN-B L CAN-B H 1 3 7 CAN-B L CAN-B H 15 31 DDK 15 3 4 1 CAN-B L CAN-B H 3 4 7 8 CAN-B L CAN-B H CAN-C H CAN-C L BLK/GRN WIRE BLU/BLK WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/RED WIRE BRN WIRE BRN/GRN WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE CAN-B H CAN-B L CIGAR LIGHTER COMPUTER DATA LINES SYSTEM DDA ELECTRONIC IGNITION- STARTER SWITCH (EIS) CONTROL MODULE ELECTRONIC SELECTOR LEVER CONTROL MODULE (AT BASE OF SELECTOR LEVER ASSEMBLY) GLOVE COMPARTMENT ILLUMINATION (W/ SWITCH) GRN WIRE GRN/BLK WIRE GRN/RED WIRE GRN/WHT WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/VIO WIRE GRY/YEL WIRE LEFT FRONT FOOTWELL ILLUMINATION LAMP LEFT REAR FOOTWELL ILLUMINATION LAMP LEFT REAR MULTI-CONTOUR BACKREST SWITCH NCA WIRE PASSENGER-SIDE POWER WINDOW SWITCH R FAN 30 30 REAR MULTI- CONTOUR BACKREST CONTROL MODULE (BETWEEN REAR SEATS) REAR SEAT CONTROL MODULE (UNDER RIGHT REAR SEAT) RED/WHT WIRE RED/YEL WIRE RIGHT FRONT DOOR CONTROL MODULE (IN RIGHT FRONT DOOR) RIGHT FRONT DOOR ENTRANCE, EXIT LAMP RIGHT FRONT DOOR HANDLE ILLUMINATION RIGHT FRONT FOOTWELL ILLUMINATION LAMP RIGHT FRONT FUSE/RELAY MODULE RIGHT FRONT SAM CONTROL MODULE (IN RIGHT FUSE/ RELAY BOX) RIGHT REAR FOOTWELL ILLUMINATION LAMP RIGHT REAR MULTI-CONTOUR BACKREST SWITCH STORAGE COMPARTMENT ILLUMINATION TERMINAL TRANSMISSION MODE SWITCH 2

1 11 CAN-B L CAN-B H 1 2 CAN B L CAN B H 1 2 HKL HKL 1 2 HKS HKS 5 20 19 15 LF DOOR RF DOOR LR DOOR RR DOOR BLK WIRE BLK/GRY WIRE BLU WIRE BLU/WHT WIRE BRN WIRE BRN/BLK WIRE BRN/RED WIRE BRN/WHT WIRE CAN B L CAN B H COMPUTER DATA LINES SYSTEM FUSE 66 GRN WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/RED WIRE GRY/VIO WIRE GRY/YEL WIRE HOT AT ALL TIMES LEFT FRONT BACKREST HEATER ELEMENT LEFT FRONT DOOR SWITCH LEFT FRONT SEAT CUSHION HEATER ELEMENT LEFT REAR DOOR SWITCH PASSIVE RESTRAINT SYSTEM REAR FUSE/RELAY MODULE (UNDER RIGHT REAR SEAT) REAR SAM CONTROL MODULE (BELOW RIGHT REAR SEAT) RED WIRE RED/VIO WIRE RED/WHT WIRE RED/YEL WIRE RIGHT FRONT DOOR SWITCH RIGHT FRONT MULTI-CONTOUR BACKREST CONTROL MODULE RIGHT FRONT MULTI-CONTOUR BACKREST SWITCH RIGHT FRONT SEAT ADJUSTMENT CONTROL MODULE (UNDER RIGHT FRONT SEAT) RIGHT FRONT SEAT CUSHION VENTILATION MOTOR GROUP RIGHT FRONT SEATBACK VENTILATION MOTOR GROUP RIGHT REAR DOOR SWITCH SUPPLEMENTAL RESTRAINTS SYSTEM TRNK TRUNK LID MICRO SWITCH VIO WIRE WHT WIRE YEL WIRE

1 11 8 5 20 CAN-B L CAN-B H 1 2 CAN B L CAN B H 17 18 CAN B L CAN B H 3 4 1 CAN-B L CAN-B H 3 4 7 8 CAN-B L CAN-B H CAN-B H CAN-B L 9 10 3 2 CAN-C L CAN-C H CAN-B H CAN-B L BLK WIRE BLU WIRE BRN WIRE BRN/RED WIRE BRN/WHT WIRE CAN B H CAN B L COMPUTER DATA LINES SYSTEM ELECTRIC STEERING COLUMN MOTOR GROUP ELECTRONIC IGNITION-STARTER SWITCH CONTROL MODULE (LEFT SIDE OF DASH) ERGONOMY SWITCH ESC IN/OUT ASSIST SWITCH GROUP FUSE 3 FUSE 4 GRN WIRE GRN/WHT WIRE GRY WIRE GRY/BLK WIRE GRY/GRN WIRE GRY/RED WIRE GRY/WHT WIRE GRY/YEL WIRE HEIGHT ADJUSTMENT MOTOR 4 3 HOT AT ALL TIMES INSTRUMENT CLUSTER LEFT FRONT DOOR CONTROL MODULE (IN DOOR) LEFT FRONT DOOR SWITCH LEFT FRONT FUSE/RELAY MODULE (LEFT REAR OF ENGINE COMPT) LEFT FRONT SAM CONTROL MODULE LF DOOR RF DOOR LONGITUDINAL ADJUSTMENT MOTOR MEMORY SWITCH/ MEMORY 1/ MEMORY 2/ MULTIFUNCTION DISPLAY NCA WIRE REAR SAM CONTROL MODULE (BELOW RIGHT REAR SEAT) RED WIRE RIGHT FRONT DOOR SWITCH STEERING COLUMN DRIVING POSITION SWITCH STEERING COLUMN HEIGHT ADJUSTMENT RELAY 1 STEERING COLUMN HEIGHT ADJUSTMENT RELAY 2 STEERING COLUMN LONGITUDINAL ADJUSTMENT RELAY 1 STEERING COLUMN LONGITUDINAL ADJUSTMENT RELAY 2 WHT WIRE