Mercedes-Benz R-class W251 facelift (2007-2010) circuit 31 left footwell voltage distributor connector 1 Wiring diagrams

10 9 8 7 6 5 4 3 2 1 CAN-B H CAN-B L CAN-C H CAN-C L 30 CAN-D H CAN-D L 3 2 1 31 CAN-D H CAN-D L 3 4 CAN-D H CAN-D L 6 7 CAN-D H CAN-D L BRN WIRE BRN/RED WIRE CENTRAL GATEWAY CONTROL MODULE (IN LEFT FRONT FOOTWELL) CIRCUIT 31 LEFT FOOTWELL VOLTAGE DISTRIBUTOR CONNECTOR 1 DATA LINK CONNECTOR (BELOW LEFT SIDE OF DASH) EMERGENCY CALL SYSTEM CONTROL UNIT (IF EQUIPPED) (IN LEFT REAR FOOTWELL) FUEL PUMP CONTROL MODULE FUSE 58 RELAY BOX (RIGHT REAR OF CARGO AREA) GRN WIRE GRN/WHT WIRE GRY WIRE GRY/WHT WIRE HIGH/LOW BUS CIRCUIT HOT AT ALL TIMES LOAD COMPARTMENT FUSE, RED WIRE

26 6 CAN-B L CAN-B H 27 33 40 TG+R TG- TG+L 35 36 31 CAN-B L CAN-B H ABS MIL INDICATOR AIR BAG INDICATOR, WARNING LAMP AUDIBLE TURN SIGNAL INDICATOR BLK WIRE BLK/BLU WIRE BLU/BLK WIRE BRAKE FLUID, PARKING BRAKE WARNING LAMP INDICATOR BRIGHT INSTRUMENT, SEARCH ILLUMINATION PUSHBUTTON BRIGHTNESS SENSOR BRN WIRE BRN/BLK WIRE BRN/RED WIRE CAN B L CAN B H CAN C L CAN C H CAN-B L 31 CAN-B H CARGO AREA) CHECK ENGINE MIL INDICATOR CIRCUIT 31 LEFT FOOTWELL VOLTAGE DISTRIBUTOR CONNECTOR 1 CLUSTER COMPUTER DATA LINES SYSTEM DARK INSTRUMENT, SEARCH ILLUMINATION PUSHBUTTON ELECTRONIC CLOCK ELECTRONIC COMPASS (BEHIND INSTRUMENT ELECTRONIC SPEEDOMETER ESP WARNING LAMP INDICATOR FRONT SAM CONTROL UNIT (UNDER PASSENGER'S SEAT) FUEL LEVEL, RESERVE GAUGE FUEL RESERVE INDICATOR LAMP FUSE FUSE 55 GRN WIRE GRN/BLK WIRE GRN/WHT WIRE HIGH BEAM INDICATOR LAMP HOT AT ALL TIMES HOT AT ALL TIMES COCKPIT FUSE BOX (BEHIND RIGHT END OF DASH) FUSE HOT IN ON OR START INSTRUMENT CLUSTER INSTRUMENT ILLUMINATION LEFT FUEL LEVEL SENSOR (IN LEFT SIDE OF FUEL TANK) LEFT TURN SIGNAL INDICATOR LOAD COMPARTMENT FUSE, RELAY BOX (RIGHT REAR OF LOW BEAM INDICATOR LAMP MALFUNCTION DISPLAY INDICATOR NCA WIRE PARKING BRAKE INDICATOR SWITCH (TOP OF PARKING BAKE ASSEMBLY) PREGLOW INDICATOR LAMP REAR SAM CONTROL UNIT (RIGHT REAR CARGO AREA) RED/BLK WIRE RED/WHT WIRE RIGHT FUEL LEVEL SENSOR (IN RIGHT SIDE OF FUEL TANK) RIGHT TURN SIGNAL INDICATOR SEAT BELT REMINDER LAMP TACHOMETER TIRE PRESSURE MONITOR WARNING LAMP INDICATOR (IF EQUIPPED) TRIP ODOMETER RESET BUTTON WARNING BUZZER

1 3 2 PNK WIRE 12 13 14 15 16 17 33 34 35 36 37 38 31 (-) SV DATA 4 3 CAN B L CAN B H BLK WIRE BLK/BLU WIRE BLU WIRE BRN WIRE BRN/RED WIRE CAN B L CAN B H CENTER LEFT FRONT PTS ULTRASONIC SENSOR (LEFT SIDE OF FRONT BUMPER) CENTER RIGHT FRONT PTS ULTRASONIC SENSOR (RIGHT SIDE OF FRONT BUMPER) CIRCUIT 31 LEFT FOOTWELL VOLTAGE DISTRIBUTOR CONNECTOR 1 COMPUTER DATA LINES SYSTEM DATA INNER LEFT FRONT PTS ULTRASONIC SENSOR (LEFT CENTER OF FRONT BUMPER) INNER LEFT REAR PTS ULTRASONIC SENSOR (LEFT SIDE OF REAR BUMPER) INNER RIGHT FRONT PTS ULTRASONIC SENSOR (RIGHT CENTER OF FRONT BUMPER) INNER RIGHT REAR PTS ULTRASONIC SENSOR (RIGHT SIDE OF REAR BUMPER) INSTRUMENT PANEL DRIVER SIDE PTS WARNING DISPLAY NCA WIRE ORG/ WIRE OUTER LEFT FRONT PTS ULTRASONIC SENSOR (LEFT CORNER OF FRONT BUMPER) OUTER LEFT REAR PTS ULTRASONIC SENSOR (LEFT CORNER OF REAR BUMPER) OUTER RIGHT FRONT PTS ULTRASONIC SENSOR (RIGHT CORNER OF FRONT BUMPER) OUTER RIGHT REAR PTS ULTRASONIC SENSOR (RIGHT CORNER OF REAR BUMPER) PNK WIRE PNK/WHT WIRE PTS CONTROL MODULE (UNDER DRIVER'S SEAT) PTS OFF SWITCH REAR DOME LAMP PTS WARNING DISPLAY RED WIRE RED/WHT WIRE UPPER CONTROL PANEL CONTROL MODULE VIO/WHT WIRE YEL WIRE YEL/BLU WIRE YEL/WHT WIRE

1 2 3 4 5 6 31 30 HL HR CAN B L CAN B H 1 2 3 4 5 6 7 8 9 10 31 31 SIG SIG 30 3 1 SIR SIL 31 31 PNK WIRE 36 35 CAN-B H CAN-B L BACKREST HEATED CUSHION BLU WIRE BLU/BLK WIRE BRN WIRE BRN/RED WIRE CAN B H CAN B L CIRCUIT 31 LEFT FOOTWELL VOLTAGE DISTRIBUTOR CONNECTOR 1 CIRCUIT 31 LEFT REAR SEAT VOLTAGE DISTRIBUTOR CONNECTOR 3 CIRCUIT 31 RIGHT FOOTWELL VOLTAGE DISTRIBUTOR CONNECTOR COMPUTER DATA LINES SYSTEM FRONT SAM CONTROL UNIT (UNDER FRONT PASSENGER'S SEAT) FUSE 31 FUSE, RELAY BOX (RIGHT REAR OF CARGO AREA) FUSE 68 GRN WIRE GRN/WHT WIRE GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES LEFT FRONT HS SWITCH LEFT FRONT SEAT BACKREST VENTILATION MOTOR GROUP (IN LEFT FRONT SEAT BACK) LEFT FRONT SEAT CUSHION VENTILATION MOTOR GROUP (IN LEFT FRONT SEAT CUSHION) LEFT FRONT SEAT HEATED CUSHION LEFT FRONT SEAT VENTILATION BLOWER REGULATOR LEFT FRONT SEAT VENTILATION SWITCH RIGHT FRONT HS SWITCH LEFT REAR FOOTWELL LHZ- NCA WIRE PNK WIRE RED WIRE RIGHT FRONT BACKREST HEATED CUSHION RIGHT FRONT SEAT BACKREST VENTILATION MOTOR GROUP (IN RIGHT FRONT SEAT BACK) RIGHT FRONT SEAT CUSHION VENTILATION MOTOR GROUP (IN RIGHT FRONT SEAT CUSHION) RIGHT FRONT SEAT HEATED CUSHION RIGHT FRONT SEAT VENTILATION BLOWER REGULATOR (IN RIGHT FRONT SEAT BACK) RIGHT FRONT SEAT VENTILATION SWITCH SEAT HEATED CUSHION STEERING COLUMN MODULE (IF EQUIPPED) (TOP OF STEERING COLUMN) UPPER CONTROL PANEL CONTROL MODULE VIO WIRE VIO/BLK WIRE