Mercedes-Benz S-class W220 (1998-2005) (under left rear seat) 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 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 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

BLK WIRE BLK/GRN WIRE BLK/WHT WIRE BLU/WHT WIRE BRN WIRE BRN/RED WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM FUSE 64 FUSE 66 GRN WIRE GRY WIRE GRY/YEL WIRE HOT AT ALL TIMES LEFT FRONT ESA CONTROL MODULE (UNDER LEFT FRONT SEAT) LEFT FRONT SEAT BELT BUCKLE MICROSWITCH (IN LEFT FRONT SEAT BELT BUCKLE) LEFT FRONT SEAT BELT COMFORT FEATURE SOLENOID (BASE OF LEFT "B" PILLAR) LEFT REAR SEAT BELT COMFORT FEATURE SOLENOID (BASE OF RIGHT "B" PILLAR) NCA WIRE REAR FUSE/RELAY MODULE (UNDER RIGHT REAR SEAT) REAR SAM CONTROL MODULE (BELOW RIGHT REAR SEAT) RED WIRE RED/BRN WIRE RED/VIO WIRE RIGHT FRONT SEAT ADJUSTMENT CONTROL MODULE (UNDER RIGHT FRONT SEAT) RIGHT FRONT SEAT BELT BUCKLE MICROSWITCH (IN RIGHT FRONT SEAT BELT BUCKLE) RIGHT FRONT SEAT BELT COMFORT FEATURE SOLENOID (BASE OF RIGHT "B" PILLAR) RIGHT REAR SEAT BELT COMFORT FEATURE SOLENOID (BASE OF LEFT "B" PILLAR) VIO WIRE WHT WIRE

1 2 1 CAN-B L CAN-B H 1 2 2 CAN-B L CAN-B H 1 2 TRUNK LID SW 1 5 11 15 19 20 3 CAN-B L LF DR SW CAN-B H RR DR SW LR DR SW RF DR SW 12 13 17 18 CAN-C L CAN-C H CAN-B L CAN-B H 3 2 9 10 CAN-B H CAN-B H CAN-B L CAN-B L 3 4 7 8 CAN-B L CAN-B H CAN-C H CAN-C L 31 32 4 LR TURN SIG RR TURN SIG 4 2 HD-SVS 6 7 4 CAN-B L CAN-B H 9 10 1 CAN-B H CAN-B L BLK WIRE BLK/GRN WIRE BLK/WHT WIRE BLK/YEL WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/RED WIRE BRN/WHT WIRE CAN C L CAN C H COMBINATION SWITCH COMPUTER DATA LINES SYSTEM DF VL ELECTRONIC IGNITION- STARTER SWITCH (EIS) CONTROL MODULE (LEFT SIDE OF DASH) ESP/SPS/BAS CONTROL MODULE (IN LEFT FUSE BOX) GRN WIRE GRN/WHT WIRE GRY/BLK WIRE GRY/RED WIRE GRY/VIO WIRE INSTRUMENT CLUSTER INTERIOR CENTRAL LOCKING SYSTEM SWITCH, HAZARD WARNING SYSTEM SWITCH L/R TURN SIG SW LEFT FRONT DOOR SWITCH LEFT FRONT SAM CONTROL MODULE (IN FUSE/RELAY BOX, LEFT SIDE) LEFT FRONT VSS (ON LEFT FRONT WHEELHOUSE) LEFT REAR DOOR SWITCH NCA WIRE PNEUMATIC SYSTEM EQUIPMENT (PSE) CONTROL MODULE (LEFT OF TRUNK) PSE CONTROL MODULE (LEFT SIDE OF TRUNK) REAR SAM CONTROL MODULE (UNDER RIGHT REAR SEAT) REMOTE TRUNK LID OPENING VALVE RIGHT FRONT DOOR SWITCH RIGHT FRONT SAM CONTROL MODULE (IN FUSE/RELAY BOX, RIGHT SIDE) RIGHT REAR DOOR SWITCH STEERING COLUMN MODULE (LEFT INSIDE OF DASH) TRUNK LID CLOSING ASSIST MICRO- SWITCH TRUNK LID EMERGENCY RELEASE SWITCH UPPER CONTROL FIELD CONTROL MODULE (AT TOP CENTER OF DASH) WHT WIRE

1 2 1 CAN-B L CAN-B H 10 9 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-C H CAN-C L 8 4 3 1 HEAD RESTRAINT RAISE VALVES BRN WIRE BRN/GRY WIRE BRN/RED WIRE BRN/VIO WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM ELECTRONIC IGNITION- STARTER SWITCH (EIS) CONTROL MODULE (LEFT SIDE OF DASH) GRN WIRE GRN/WHT WIRE GRY WIRE GRY/BLK WIRE GRY/RED WIRE GRY/VIO WIRE GRY/YEL WIRE HEAD RESTRAINT HEIGHT/LOWER ADJUSTMENT SWITCH LEFT FRONT DOOR SWITCH LEFT HEAD RESTRAINT RAISE VALVE LEFT REAR DOOR CONTROL MODULE (IN LEFT REAR DOOR) LEFT REAR DOOR SWITCH LEFT REAR SEAT BELT BUCKLE/BELT COMFORT FEATURE SWITCH MIDDLE HEAD RESTRAINT RAISE VALVE NCA WIRE PSE CONTROL MODULE (ON LEFT SIDE OF TRUNK) REAR HEADREST SWITCH REAR SAM CONTROL MODULE (BELOW RIGHT REAR SEAT) RIGHT FRONT DOOR SWITCH RIGHT HEAD RESTRAINT RAISE VALVE RIGHT REAR DOOR CONTROL MODULE (IN RIGHT REAR DOOR) RIGHT REAR DOOR SWITCH RIGHT REAR SEAT BELT BUCKLE/BELT COMFORT FEATURE SWITCH UPPER CONTROL FIELD CONTROL MODULE (AT TOP CENTER OF DASH) WHT WIRE

AIR PUMP (TOP FRONT SIDE OF ENGINE) AIR PUMP RELAY BLK WIRE BLK/BRN WIRE BLK/YEL WIRE BLU WIRE BLU/WHT WIRE BRN WIRE BRN/BLK WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/WHT WIRE COOLING FANS SYSTEM ENGINE ELECTRONICS/ CHASSIS RELAY FUEL PUMP RELAY FUSE 29 FUSE 30 FUSE 31 FUSE 49 FUSE 52 GRN WIRE GRN/BLK WIRE GRN/WHT WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/YEL WIRE HOT AT ALL TIMES HOT IN RUN OR START NCA WIRE PURGE CONTROL VALVE (LEFT REAR OF ENGINE COMPT) REAR FUSE/RELAY MODULE (UNDER RIGHT REAR SEAT) RED WIRE RED/BLU WIRE RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE RIGHT FRONT FUSE/ RELAY MODULE (RIGHT REAR OF ENGINE COMPT) RIGHT FRONT SAM CONTROL MODULE THROTTLE VALVE ACTUATOR (REAR TOP CENTER OF ENGINE) VIO WIRE WHT WIRE WHT/BLU WIRE YEL WIRE YEL/BLU WIRE