Mercedes-Benz R-class W251 facelift (2007-2010) (in right rear footwell) Wiring diagrams

ABS IND. BLK WIRE BLU WIRE BLU/BLK WIRE BLU/WHT WIRE BRAKE FLUID, PARKING BRAKE WARNING IND BRN WIRE BRN/RED WIRE BRN/WHT WIRE CAN B L CAN B H COCKPIT COMPUTER DATA LINES SYSTEM ESP BRAKE PRESSURE SENSOR (ON BRAKE MASTER CYLINDER) ESP WARNING LAMP IND FRONT SAM CONTROL UNIT (UNDER RIGHT FRONT SEAT) GRN/BLK WIRE HOT AT ALL TIMES FUSE 11 FUSE BOX (BEHIND RIGHT END OF DASH) INSTRUMENT CLUSTER LEFT FRONT WHEEL SPEED SENSOR LEFT REAR WHEEL SPEED SENSOR NCA WIRE PARKING BRAKE INDICATOR SWITCH (ABOVE PARKING BRAKE) REAR SAM CONTROL MODULE (RIGHT REAR OF CARGO AREA) RED/BLK WIRE RED/WHT WIRE RIGHT FRONT BRAKE PAD CONTACT SENSOR (ON RIGHT FRONT BRAKE ASSEMBLY) RIGHT FRONT WHEEL SPEED SENSOR RIGHT REAR BRAKE PAD CONTACT SENSOR (ON RIGHT REAR BRAKE ASSEMBLY) RIGHT REAR WHEEL SPEED SENSOR VIO/WHT WIRE VOLTAGE DISTRIBUTOR CONNECTOR WHT WIRE WHT/BLK WIRE YEL/WHT WIRE

16 26 CAN-B H CAN-B L 2 1 CAN-C L CAN-C H 8 3 RF RE RF LI BACKUP CAMERA VOLTAGE SUPPLY MODULE BATTERY COMPARTMENT PREFUSE BOX (UNDER RIGHT FRONT SEAT) BRN WIRE BRN/RED WIRE CIRCUIT 31 RIGHT REAR SEAT VOLTAGE DISTRIBUTOR CONNECTOR COMPUTER DATA LINES SYSTEM ELECTRIC CONTROL UNIT (VGS) FUSE GRN WIRE GRN/WHT WIRE HOT AT ALL TIMES LEFT BACKUP LAMP LEFT TAILLAMP REAR SAM CONTROL MODULE (RIGHT REAR OF CARGO AREA) RED WIRE RIGHT BACKUP LAMP RIGHT TAILLAMP WHT WIRE WHT/BLK WIRE

13 51 AL(+) AL(+) 30 CAN-B H CAN-B L 39 52 TIG_L TIG_R 4 2 30 CAN-B L CAN-B H 4 3 2 1 KI.58 AMBIENT LAMP (W/ INTERIOR PACKAGE) BLK WIRE BLK/BLU WIRE BRN WIRE BRN/RED WIRE CIRCUIT 31 RIGHT REAR SEAT VOLTAGE DISTRIBUTOR CONNECTOR COMPUTER DATA LINES SYSTEM ENTRANCE, EXIT LAMP FRONT PASSENGER POWER WINDOW SWITCH KI 58 GND KR(+) LEFT FRONT DOOR CONTROL MODULE (IN FRONT OF LEFT FRONT DOOR) LEFT FRONT DOOR ENTRANCE, EXIT LAMP LEFT INTERIOR CL [ZV] SWITCH LEFT REAR INSIDE DOOR HANDLE ILLUMINATION (W/ INTERIOR PACKAGE) NCA WIRE ORG/ WIRE PNK/BLK WIRE REAR END DOOR REAR SAM CONTROL MODULE (RIGHT REAR OF CARGO AREA) RED WIRE RED/BLK WIRE RIGHT FRONT DOOR CONTROL MODULE (IN FRONT OF RIGHT FRONT DOOR) RIGHT FRONT DOOR ENTRANCE, EXIT LAMP RIGHT INTERIOR CL [ZV] SWITCH RIGHT REAR DOOR RIGHT REAR DOOR INSIDE HANDLE ILLUMINATION (W/ INTERIOR PACKAGE) RIGHT TRUNK LAMP RWTL WHT/BLU WIRE

11 10 CAN-C L CAN-C H 36 35 CAN-B H CAN-B L BATTERY BLK/BLU WIRE BLU/WHT WIRE BRN WIRE BRN/RED WIRE CIRCUIT 31 RIGHT REAR SEAT VOLTAGE DISTRIBUTOR CONNECTOR COMBINATION SWITCH COMPUTER DATA LINES SYSTEM ENGINE COMPARTMENT FUSE, RELAY BOX (RIGHT SIDE OF ENGINE COMPT) FRONT SAM CONTROL UNIT (UNDER RIGHT FRONT SEAT) FUSE FUSE COMPARTMENT PREFUSE BOX (UNDER RIGHT FRONT SEAT) GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GRN/WHT WIRE GRY WIRE GRY/BLU WIRE HEADLAMP FLASHER/ HIGH BEAM SWITCH HOT AT ALL TIMES HOT W/ CIRCUIT 15 RELAY ENERGIZED LEFT DYNAMIC CORNERING LAMP MOTOR LEFT FRONT HEADLAMP UNIT LEFT FRONT SIDE MARKER LAMP LEFT RIGHT TURN LEFT STANDING, PARKING LAMP LEFT TURN SIGNAL LAMP PNK/BLK WIRE PNK/WHT WIRE RED WIRE RIGHT DYNAMIC CORNERING LAMP MOTOR RIGHT FRONT HEADLAMP UNIT RIGHT FRONT SIDE MARKER LAMP RIGHT STANDING, PARKING LAMP RIGHT STOP LAMP, TAILLAMP, PARKING LAMP, SIDE MARKER LAMP RIGHT TAILLAMP RIGHT TRUNK LAMP RIGHT TURN SIGNAL LAMP SIGNAL, SWITCH STEERING COLUMN MODULE (TOP OF STEERING COLUMN) VIO/BLK WIRE VIO/WHT WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 CAN-C H CAN-C L 10 11 CAN-C H CAN-C L 17 18 CAN B L CAN B H 17 27 CAN-B H CAN-B L COMPUTER DATA LINES SYSTEM 5 6 7 30 31 LIN BLK WIRE BLK/BLU WIRE BLK/WHT WIRE BLU WIRE BRN WIRE BRN/RED WIRE BUS SIG CIRCUIT 31 RIGHT FOOTWELL VOLTAGE DISTRIBUTOR CONNECTOR CIRCUIT 31 RIGHT REAR SEAT VOLTAGE DISTRIBUTOR CONNECTOR COMBINATION SWITCH COMPUTER DATA LINES SYSTEM ENGINE COMPARTMENT FUSE, RELAY BOX (RIGHT SIDE OF ENGINE COMPT) EXCEPT 5.0L 36 35 CAN-B H CAN-B L COMPUTER DATA LINES SYSTEM EXTERIOR LAMP SWITCH FRONT SAM CONTROL UNIT (UNDER RIGHT FRONT SEAT) FUSE 112 FUSE 55 FUSE 54 GRN WIRE GRN/BLK WIRE GRN/WHT WIRE GRY/BLK WIRE GRY/WHT WIRE HEADLAMP FLASHER/ HIGH BEAM SW HEADLAMP RANGE ADJUSTMENT CONTROL MODULE (IN RIGHT FRONT FOOTWELL) HIGH BEAM INDICATOR HOT W/ CIRCUIT 15 RELAY ENERGIZED HRA POWER MODULE (W/ XENON) INSTRUMENT CLUSTER LEFT FOG LAMP LEFT FRONT HEADLAMP UNIT LEFT HEADLAMP RANGE ADJUSTMENT MOTOR LEFT HIGH BEAM LEFT LOW BEAM LEFT HIGH BEAM SOLENOID LEFT TAILLAMP LIN LOAD COMPARTMENT FUSE, RELAY BOX (RIGHT REAR OF CARGO AREA) LOW BEAM SW ORG/ WIRE PNK/BLK WIRE REAR FOG LAMP RED/BLU WIRE RIGHT FOG LAMP RIGHT FRONT HEADLAMP UNIT RIGHT HEADLAMP RANGE ADJUSTMENT MOTOR RIGHT HIGH BEAM SOLENOID RIGHT HIGH BEAM RIGHT TAILLAMP STEERING COLUMN MODULE (TOP OF STEERING COLUMN) UPPER CONTROL PANEL CONTROL MODULE VIO WIRE VIO/BLK WIRE W/ XENON XENON W/O W/O XENON XENON WHT/BLU WIRE XENON HEADLAMP IGNITION MODULE (W/ XENON) XENON HEADLAMP SUPPLY MODULE (W/ XENON) XENON RIGHT LOW BEAM HEADLAMP IGNITION MODULE (W/ XENON) YEL/BLK WIRE

17 18 CAN B L CAN B H 30 31 LIN 35 36 CAN-B L CAN-B H BLK WIRE BLK/BLU WIRE BLU WIRE BRIGHT INSTRUMENT, SEARCH ILLUMINATION PUSH BUTTON BRIGHTNESS SENSOR BRN WIRE BRN/RED WIRE CIRCUIT 31 RIGHT REAR SEAT VOLTAGE DISTRIBUTOR CONNECTOR COMPUTER DATA LINES SYSTEM CUP HOLDER 1 ILLUM CUP HOLDER 2 ILLUM CUP HOLDER ILLUMINATION CUP HOLDER ILLUMINATION (W/ INTERIOR PACKAGE) DARK INSTRUMENT, SEARCH ILLUMINATION PUSH BUTTON DISTRIBUTOR CONNECTOR EXTERIOR LAMP SWITCH FRONT ARMREST FOLDING COMPARTMENT ILLUMINATION (W/ INTERIOR PACKAGE) FRONT CENTER CONSOLE CUP HOLDER ILLUMINATION (W/ INTERIOR PACKAGE) FRONT CIGAR LIGHTER W/ ASHTRAY ILLUMINATION FRONT SAM CONTROL UNIT (UNDER RIGHT FRONT SEAT) FUSE (RIGHT REAR OF CARGO AREA) FUSE 60 GLOVE COMPARTMENT ILLUMINATION (W/ SWITCH) GRN/BLK WIRE GRY/WHT WIRE HEADLIGHTS SYSTEM HOT W/ CIRCUIT INSTRUMENT CLUSTER INSTRUMENT ILLUMINATION LEFT AIR OUTLET ILLUMINATION LEFT CENTER AIR OUTLET ILLUMINATION LIN LOAD COMPARTMENT FUSE, RELAY BOX PNK/BLK WIRE REAR CENTER CONSOLE ILLUMINATION REAR CENTER CONSOLE ILLUMINATION 2 RED WIRE RED/BLU WIRE RIGHT AIR OUTLET ILLUMINATION RIGHT CENTER AIR OUTLET ILLUMINATION UPPER CONTROL PANEL MODULE WAKE-UP SIGNAL/CIRCUIT

3.5L AC RECIRCULATION UNIT BATTERY BATTERY COMPARTMENT PREFUSE BOX (UNDER RIGHT BLK WIRE BLU WIRE BOOSTER BLOWER ELECTRONIC BLOWER CONTROLLER BRN WIRE CIRCUIT CIRCUIT 31 RIGHT REAR SEAT VOLTAGE DISTRIBUTION CONNECTOR CIRCUIT 31 RIGHT REAR SEAT VOLTAGE DISTRIBUTOR CONNECTOR COCKPIT PREFUSE BOX EMERGENCY CALL SYSTEM CONTROL UNIT (IF EQUIPPED) ENGINE COMPARTMENT FUSE, RELAY BOX (RIGHT SIDE OF ENGINE COMPT) FRONT CIGAR LIGHTER (IN LEFT REAR (W/ ASHTRAY FOOTWELL) ILLUMINATION) FRONT SAM CONTROL MODULE FRONT SAM CONTROL UNIT FRONT SEAT) FUEL PUMP CONTROL MODULE (3.5L) FUSE 10 FUSE 11 FUSE 12 FUSE 13 FUSE 14 FUSE 15 (BEHIND RIGHT END OF DASH) FUSE 46 FUSE 50 FUSE 52 FUSE 53 FUSE 54 FUSE 56 FUSE 59 FUSE 55 FUSE 60 FUSE 61 RELAY FUSE 62 FUSE 63 FUSE 79 FUSE 80 FUSE 78 FUSE 82 FUSE 81 FUSE 83 FUSE 84 FUSE 85 FUSE 86 FUSE 87 FUSE 90 FUSE 89 FUSE 88 FUSE 91 GLOVE COMPARTMENT ILLUMINATION SWITCH GRY WIRE HEADLAMP RANGE ADJUSTMENT CONTROL MODULE (W/ XENON HEADLAMPS) ILL INSTRUMENT CLUSTER LEFT FRONT REVERSIBLE EMERGENCY TENSIONING RETRACTOR (IF EQUIPPED) PNK WIRE PTC REAR SAM HEATER CONTROL BOOSTER MODULE (W/ HEATER BOOSTER) REAR SAM CONTROL MODULE REAR WIPER RELAY RED WIRE RELAY RESTRAINT REAR SAM CONTROL SYSTEMS MODULE CONTROL MODULE RESTRAINT SYSTEMS CONTROL MODULE RIGHT FRONT REVERSIBLE EMERGENCY TENSIONING RETRACTOR (IF EQUIPPED) SOCKET CIRCUIT STEERING COLUMN MODULE TAILGATE WIPER MOTOR TO DC/AC CONVERTER CONTROL UNIT (DIAGRAM 3 OF 3) TO ENGINE COMPARTMENT FUSE, RELAY BOX (DIAGRAM 3 OF 3) TO FRONT PREFUSE (DIAGRAM 3 OF 3) TO FUSE 48 (DIAGRAM 2 OF 3) UPPER CD CHANGER CONTROL PANEL CONTROL MODULE VIO WIRE W/ INTERIOR LIGHT PACKAGE W/O INTERIOR LIGHT PACKAGE WHT WIRE WIPER ON/OFF RELAY WSS CONTROL UNIT (WEIGHT SENSING SYSTEM) YEL WIRE

AUX L + AUX R + BACKUP CAMERA BACKUP CAMERA VOLTAGE SUPPLY MODULE BLK WIRE BRN WIRE CIRCUIT 31 LEFT REAR SEAT VOLTAGE DISTRIBUTOR CONNECTOR 2 COMAND OPERATING, DISPLAY, CONTROL MODULE DVD PLAYER (W/ REAR ENTERTAINMENT) NCA WIRE RED/BLK WIRE SHIELD VIDEO OUT VIDEO GND W/ REAR ENTERTAINMENT W/O REAR ENTERTAINMENT WHT/BLK WIRE YEL WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 MIC OUT 1 2 MOST IN MOST OUT BRN WIRE CIRCUIT 31 LEFT REAR SEAT VOLTAGE DISTRIBUTOR CONNECTOR 2 EMERGENCY CALL SYSTEM CONTROL UNIT (IN LEFT REAR FOOTWELL) GRN WIRE HANDS-FREE SYSTEM MICROPHONE GROUP MIC GND MIC OUT + NCA WIRE ORG/ WIRE PNK MIC 1 MIC 3 WIRE PNK WIRE RED/BLK WIRE SOUND SYSTEMS VOICE CONTROL SYSTEM (VCS (SBS)) CONTROL UNIT WAKE UP 31

BLK WIRE BLK/RED WIRE BLK/VIO WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/RED WIRE BLU/YEL WIRE BRN WIRE BRN/BLK WIRE BRN/GRY WIRE BRN/RED WIRE BRN/WHT WIRE BRS CDI CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) CHARGE PRESSURE SENSOR (RIGHT FRONT OF ENGINE) DRV (+) FUEL PUMP (IN RIGHT SIDE OF FUEL TANK) GRN WIRE GRN/BLU WIRE GRN/RED WIRE GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE GRY/BLK WIRE GRY/BRN WIRE GRY/RED WIRE GRY/YEL WIRE HFM-1 HFM-2 INJ L KTS_S KWG LDF-1 LIN MOT- NCA WIRE ORG/ WIRE PRESSURE SENSOR DOWNSTREAM OF AIR CLEANER RAIL PRESSURE SENSOR (REAR OF RIGHT FUEL RAIL) RDS RED/BLK WIRE RED/BLU WIRE RED/GRY WIRE RED/WHT WIRE TMOT TWC (KAT) TEMPERATURE SENSOR (IN EXHAUST, RIGHT OF TRANSMISSION) WHT/BLU WIRE WHT/RED WIRE YEL WIRE YEL/BLK WIRE YEL/BRN WIRE ZME_L