Mercedes-Benz S-class W221 facelift (2009-2013) front sam control module w/ fuse, relay module (left rear engine compt) Wiring diagrams

ABS/MIL IND BAS BRAKE BOOSTER BAS RELEASE SWITCH BAS SOLENOID VALVE BLK/BRN WIRE BLK/GRY WIRE BLK/ORG WIRE BLK/PNK WIRE BLK/RED WIRE BLK/WHT WIRE BLU/BLK WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/YEL WIRE BRAKE FLUID INDICATOR SWITCH (LEFT REAR OF BRAKE FLUID WARNING LAMP IND BRN WIRE BRN/WHT WIRE BRN/YEL WIRE CAN H H CAN H L CAN-F L CAN-F H COMPUTER DATA LINES SYSTEM DIAPHRAGM TRAVEL SENSOR ENGINE COMPT) ESP WARNING LAMP IND FRONT SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT REAR ENGINE COMPT) FUSE GRN/PNK WIRE GRN/YEL WIRE HOT AT ALL TIMES INSTRUMENT CLUSTER LEFT REAR WHEEL SPEED SENSOR (AT LEFT REAR WHEEL) NCA WIRE PNK WIRE POWER DISTRIBUTION SYSTEM RED/YEL WIRE RIGHT FRONT WHEEL SPEED SENSOR (AT RIGHT FRONT WHEEL) RIGHT REAR WHEEL SPEED SENSOR (AT RIGHT REAR WHEEL) SIG VIO WIRE VIO/WHT WIRE WHT WIRE WHT/YEL WIRE YAW RATE, LATERAL, LONGITUDINAL ACCELERATION SENSOR YEL WIRE YEL/WHT WIRE

15 16 CAN-B H CAN-B L 41 54 CAN E H CAN E L BLK/ORG WIRE BLK/YEL WIRE BRN WIRE BRN/GRN WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM COOLANT TEMPERATURE SENSOR (5.5L: FRONT OF ENGINE) ENGINE ENGINE CONTROLS SYSTEM ENGINE COOLANT CIRCULATION PUMP (RIGHT OF RADIATOR) FRONT SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT REAR ENGINE COMPT) FUSE 23 FUSE 5 COMPARTMENT PREFUSE BOX (RIGHT REAR ENGINE COMPT) GRN WIRE GRN/WHT WIRE HOT AT ALL TIMES HOT W/ ENGINE CIRCUIT 87 RELAY ENERGIZED ME-SFI (ME) CONTROL UNIT (RIGHT REAR OF ENGINE COMPT) RED WIRE RED/BLK WIRE RED/GRN WIRE

BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLK/VIO WIRE BLK/YEL WIRE BRN WIRE BRN/WHT WIRE EMERGENCY VEHICLE SYSTEM FIRE EXTINGUISHING FIRE EXTINGUISHING SYSTEM CONTROL MODULE FRESH AIR SENSOR (RIGHT REAR OF ENGINE COMPT) FRESH AIR SYSTEM EMERGENCY ACTIVATE BUTTON FRESH AIR SYSTEM/FIRE EXTINGUISHING SYSTEM EMERGENCY ACTIVATE BUTTON FRONT SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT REAR ENGINE COMPT) GRN WIRE GRN/WHT WIRE GRY/BLU WIRE NCA WIRE PAS (GAS), SPECIAL SIGNAL SYSTEM CONTROL MODULE (LEFT FRONT OF TRUNK) RED WIRE RED/BLK WIRE SPECIAL VEHICLE MULTIFUNCTION CONTROL MODULE (SVMCM (MSS)) SYSTEM SWITCH VIO WIRE VIO/RED WIRE W/O MEDIUM RESERVOIR SOLENOID VALVE W/ MEDIUM RESERVOIR SOLENOID VALVE WINDSHIELD WASHER FLUID PUMP (RIGHT FRONT OF ENGINE COMPT)

1 2 3 4 5 6 7 8 9 10 11 12 13 14 MLS+ GND MLS- 1 2 3 4 5 6 LIN AIR CONDITIONING SYSTEM AIR CONDITIONING SYSTEM ANTI-LOCK BRAKES SYSTEM AIR CONDITIONING SYSTEM INSTRUMENT CLUSTER SYSTEM POWER DISTRIBUTION SYSTEM AIR CONDITIONING SYSTEM POWER DISTRIBUTION SYSTEM AIR CONDITIONING SYSTEM WIPER/WASHER SYSTEMS BLK WIRE BLK/BLU WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/RED WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/GRN WIRE BLU/WHT WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/PNK WIRE BRN/WHT WIRE BRN/YEL WIRE CAN C L CAN C H CAN E H CAN E L CAN-B H CAN-B L COMPUTER DATA LINES SYSTEM COMPUTER DATA LINES SYSTEM AIR CONDITIONING SYSTEM DATA ELECTRONIC SUSPENSION SYSTEM ENGINE COMPARTMENT PREFUSE BOX (RIGHT REAR ENGINE COMPT) ENGINE CONTROLS SYSTEM ENGINE CONTROLS SYSTEM ENGINE CONTROLS SYSTEM ENGINE CONTROLS SYSTEM REAR SAM CONTROL MODULE CIRCUIT ENGINE CONTROLS SYSTEM STARTING/CHARGING SYSTEM FRONT SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT REAR ENGINE COMPT) FUSE 6 GRN WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/GRN WIRE GRY/YEL WIRE HOT AT ALL TIMES INTERIOR LIGHTS SYSTEM POWER DISTRIBUTION SYSTEM LEFT FRONT DOOR CONTROL MODULE (IN LEFT FRONT DOOR) LIN BUS LIN-BUS LIN-BUS CAN-B H CAN-B L MEMORY SYSTEMS MEMORY SYSTEMS ELECTRONIC POWER STEERING SYSTEM MEMORY SYSTEMS MLS+ H+ MLS- H+ PNK WIRE PNK/BLU WIRE PNK/RED WIRE POWER DISTRIBUTION SYSTEM POWER DISTRIBUTION SYSTEM POWER DISTRIBUTION SYSTEM POWER DISTRIBUTION SYSTEM REAR SAM CONTROL MODULE CIRCUIT REAR SAM CONTROL MODULE CIRCUIT ENGINE CONTROLS SYSTEM TRANSMISSIONS SYSTEM RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/GRY WIRE RED/VIO WIRE RED/WHT WIRE RED/YEL WIRE STARTING/CHARGING SYSTEM STARTING/CHARGING SYSTEM WIPER/WASHER SYSTEM TRANSMISSIONS SYSTEM VIO WIRE VIO/WHT WIRE WIPER/WASHER SYSTEM AIR CONDITIONING SYSTEM YEL WIRE YEL/GRY WIRE YEL/RED WIRE YEL/WHT WIRE

1 2 3 4 5 6 7 8 9 10 57 L 1 2 3 4 5 6 7 8 9 10 CAN-E H 1 2 3 SPIEGEL L 5 6 7 8 9 10 57 R AIR CONDITIONING SYSTEM AIR CONDITIONING SYSTEM ELECTRONIC POWER STEERING SYSTEM AUSTEMP+ BLK WIRE BLU/WHT WIRE BRN WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/WHT WIRE BRN/YEL WIRE CAN E L CAN-G H CAN-G L COMPUTER DATA LINES SYSTEM CRUISE CONTROL SYSTEM DATA ENGINE COMPARTMENT PREFUSE BOX (RIGHT REAR ENGINE COMPT) ENGINE CONTROLS SYSTEM FRONT SAM CONTROL MODULE W/ FUSE, FRONT SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT REAR ENGINE COMPT) FUSE GRN WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/BRN WIRE GRY/GRN WIRE GRY/VIO WIRE GRY/YEL WIRE HEADLIGHTS SYSTEM HEADLIGHTS SYSTEM EXTERIOR LIGHTS SYSTEM HEADLIGHTS SYSTEM HEADLIGHTS, EXTERIOR LIGHTS SYSTEMS HORNS SYSTEM HOT AT ALL TIMES INSTRUMENT CLUSTER SYSTEM INSTRUMENT CLUSTER, DEFOGGER SYSTEMS INTERIOR LIGHTS SYSTEM HEADLIGHTS SYSTEM NAVIGATION SYSTEM ORG/BLU WIRE PNK/BLU WIRE PNK/GRN WIRE PNK/RED WIRE POWER DISTRIBUTION SYSTEM RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE RELAY MODULE (LEFT REAR ENGINE COMPT) SIG GND GND GND AUSTEMP- SIG SIG SPIEGEL R SUPPLEMENTAL RESTRAINTS SYSTEM VIO WIRE WARNING SYSTEMS WARNING, ANTI-LOCK BRAKES SYSTEMS WIPER/WASHER SYSTEM WIPER/WASHER SYSTEM ELECTRONIC SUSPENSION SYSTEM WIPER/WASHER SYSTEM INSTRUMENT CLUSTER SYSTEM WARNING SYSTEMS YEL WIRE YEL/BLU WIRE YEL/BRN WIRE YEL/GRN WIRE YEL/ORG WIRE

BLK WIRE BLK/WHT WIRE BLU WIRE BLU/WHT WIRE BRN/WHT WIRE CAN H H CAN H L COMPUTER DATA LINES SYSTEM FRONT SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT REAR ENGINE COMPT) FUSE GRN WIRE GRN/WHT WIRE HOT W/ CHASSIS CIRCUIT 87 RELAY ENERGIZED INSTRUMENT CLUSTER NCA WIRE NIGHT VISION ASSIST CONTROL UNIT (LEFT FRONT FOOTWELL) ORG/ WIRE ORG/WHT WIRE RED WIRE RED/WHT WIRE VIO WIRE VIO/WHT WIRE

1 2 3 4 5 6 7 8 9 10 11 12 FLAT WIRE FLAT WIRE FLAT WIRE FLAT WIRE FLAT WIRE 1 2 3 4 5 6 7 8 ALS SER 1 2 3 4 5 CAN-B L 31 LL HR 31 DATA 30 31 AMBIENT LAMP AUTOMATIC DIMMING MIRROR BACK AUTOMATIC DIMMING INTERIOR REARVIEW MIRROR SENSOR BLU WIRE BRN WIRE BRN/RED WIRE BUTTON 1 CAN-B H 31 30 COMPUTER DATA LINES SYSTEM DOOR CONTACT ON/OFF SWITCH ELECTRIC PARKING BRAKE SWITCH EMERGENCY CALL SYSTEM CONTROL UNIT (LEFT FRONT OF TRUNK) FLAT WIRE FLAT WIRE FLAT WIRE 3 2 1 FLAT WIRE FLAT WIRE FLAT WIRE FLAT WIRE FLAT WIRE FLAT WIRE FORWARD AUTOMATIC DIMMING INTERIOR REARVIEW MIRROR SENSOR FRONT DOME LAMP FRONT DOME LAMP SWITCH FRONT SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT REAR ENGINE COMPT) FUSE 126 GARAGE DOOR OPENER GARAGE DOOR OPENER BUTTON 2 GARAGE DOOR OPENER BUTTON 3 GARAGE DOOR OPENER INDICATOR LAMP GARAGE DOOR OPENER TRANSMITTER UNIT (INSIDE REARVIEW MIRROR) GRN WIRE GRY WIRE GRY/BLU WIRE HOT AT ALL TIMES INSIDE REARVIEW MIRROR UNIT LEFT FRONT READING LAMP SWITCH LEFT READING LAMP LEFT REAR FOOTWELL LL HR MB-INFO, TELEDIAGNOSIS BUTTON GROUP NCA WIRE OVERHEAD CONTROL PANEL CONTROL MODULE (CENTER FRONT OF ROOF) REAR DOME LAMP, SWITCH REAR ROLLER SUN BLIND SWITCH REAR SAM CONTROL MODULE W/ FUSE, RELAY MODULE (CENTER TRUNK) RED WIRE RED/GRY WIRE RIGHT FRONT READING LAMP SWITCH RIGHT READING LAMP ROOF SWITCH SOS PUSHBUTTON SWITCH YEL WIRE YEL/GRN WIRE YEL/PNK WIRE

1 2 NTC + NTC - 1 3 1 3 GND LSP- LSP+ GND 31 30 CAN-E H CAN-E L ALDW - BACK, SBS OFF BUTTON BEAM SWITCH BLK WIRE BLU WIRE BLU/YEL WIRE BRN WIRE COMBINATION SWITCH COMPUTER DATA LINES SYSTEM CONTROL CONTACT SWITCH CRUISE CONTROL SWITCH DECELERATE, SET SWITCH RESUME FROM MEMORY SWITCH ACCELERATE, SET SWITCH DTR DISTANCE POTENTIOMETER (IF EQUIPPED) FANFARE HORNS PUSHBUTTON FANFARE HORNS, AIR BAG CLOCK SPRING CONTACT (TOP OF STEERING COLUMN) FRONT SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT REAR ENGINE COMPT) GEAR SELECTOR SWITCH DIRECT SELECT GRN WIRE GRN/WHT WIRE HEATER COIL TEMPERATURE SENSOR HOT AT ALL TIMES FUSE LEFT MULTI-FUNCTION STEERING WHEEL PUSHBUTTON GROUP LEFT, RIGHT TURN SIGNAL SWITCH HEAD LAMP FLASHER/HIGH BEAM SWITCH LOW MUTE BUTTON NCA WIRE NTC- OFF SWITCH OK BUTTON PNK/BLU WIRE RED WIRE RED/BLK WIRE RIGHT MULTI-FUNCTION STEERING WHEEL PUSHBUTTON GROUP SCROLL FORWARD/ BACK PUSHBUTTON STEERING COLUMN ADJUSTMENT SWITCH STEERING COLUMN MODULE (TOP OF STEERING COLUMN) STEERING LOCK SWITCH STEERING WHEEL ELECTRONICS STEERING WHEEL GEAR SHIFTER (+) (IF EQUIPPED) STEERING WHEEL VIBRATION MOTOR (W/ AUTOMATIC LANE RECOGNITION) SUPPLEMENTAL RESTRAINTS SYSTEM SYSTEM SELECTION PUSHBUTTON VCS (SBS) ON BUTTON VIO WIRE VIO/GRN WIRE WHT WIRE WINDSHIELD WASHER SYSTEM SWITCH WIPE SWITCH YEL WIRE

1 2 3 4 30 31 CAN-A L CAN-A H 15 16 CAN-B H CAN-B L 23 16 24 LIN BUS LIN BUS 41 54 CAN E H CAN E L 5 4 6 LIN-DATA LIN (-) LIN (+) AAC (KLA) CONTROL UNIT (CENTER DASH) BLK WIRE BLK/BLU (OR BLK/PNK) WIRE BLK/BLU WIRE BLK/BRN WIRE BLK/GRY WIRE BLK/ORG WIRE BLK/PNK WIRE BLK/WHT WIRE BLU WIRE BRN WIRE BRN/BLK WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/PNK WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM COOLANT CIRCULATION PUMP ENGINE ENGINE CONTROLS SYSTEM FRONT SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT REAR ENGINE COMPT) FUSE 108 FUSE 23 FUSE 5 COMPARTMENT PREFUSE BOX (RIGHT REAR ENGINE COMPT) GRN WIRE GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE GRY/BLU WIRE GRY/GRN WIRE GRY/ORG WIRE HEATED WINDSHIELD CONTROL UNIT (W/ SPECIAL PROTECTION) HOT AT ALL TIMES HOT W/ ENGINE CIRCUIT 87 RELAY ENERGIZED LEFT B-PILLAR AIR DISTRIBUTION ACTUATOR MOTOR (UNDER LEFT FRONT SEAT) LEFT DUOVALVE LEFT REAR CENTER AIR OUTLET ACTUATOR MOTOR ME-SFI (ME) CONTROL UNIT (RIGHT REAR OF ENGINE COMPT) PNK WIRE PNK/GRY WIRE REAR A/C CONTROL MODULE REAR A/C ELECTRONIC BLOWER REGULATOR (IN REAR OF CENTER CONSOLE) REAR AUXILIARY HEATING SYSTEM SUPPLY UNIT REAR BLOWER MOTOR (IN REAR OF CENTER CONSOLE) REAR EVAPORATOR TEMPERATURE SENSOR (REAR OF CENTER CONSOLE) REAR REFRIGERANT SHUT-OFF VALVE (LEFT FRONT WHEELHOUSE) RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/WHT WIRE RIGHT B-PILLAR AIR DISTRIBUTION ACTUATOR MOTOR (UNDER RIGHT FRONT SEAT) RIGHT DUOVALVE RIGHT REAR AIR CONDITIONING HEATER EXCHANGER TEMPERATURE SENSOR RIGHT REAR CENTER AIR OUTLET ACTUATOR MOTOR VIO WIRE W/ REAR WINDOW DEFROSTER W/O REAR WINDOW DEFROSTER YEL WIRE YEL/BLK WIRE YEL/BLU WIRE YEL/RED WIRE

1 2 CAN B L CAN B H 13 12 CAN-E L CAN-E H 16 15 CAN-B L CAN-B H 18 26 AUS TEMP - AUS TEMP + 26 25 CAN-B L CAN-B H 3 1 CAN-B H CAN-B L 3 4 CAN-B L CAN-B H AAC (KLA) CONTROL UNIT (CENTER DASH) BLK WIRE BRN WIRE BRN/GRN WIRE BRN/RED WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM EIS (EZS) CONTROL UNIT ESP CONTROL MODULE FRONT SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT REAR ENGINE COMPT) FUSE 115 GRN WIRE GRN/WHT WIRE HEATED REAR WINDOW HEATED REAR WINDOW RELAY HOT AT ALL TIMES INTERIOR FUSE 3 PREFUSE BOX (RIGHT FRONT FOOTWELL) LEFT "C" PILLAR) LEFT ELECTRICALLY ADJUSTABLE, HEATED EXTERIOR MIRROR LEFT FRONT DOOR CONTROL MODULE (IN LEFT FRONT DOOR) MIRROR HEATER OUTSIDE TEMPERATURE DISPLAY TEMPERATURE SENSOR OVERHEAD CONTROL PANEL CONTROL MODULE (CENTER FRONT OF ROOF) REAR SAM CONTROL MODULE W/ FUSE, RELAY MODULE (CENTER TRUNK) REAR WINDOW INTERFERENCE SUPPRESSION CAPACITOR RED WIRE RED/BLU WIRE RIGHT ELECTRICALLY ADJUSTABLE, HEATED EXTERIOR MIRROR RIGHT FRONT DOOR CONTROL MODULE (IN RIGHT FRONT DOOR)