Mercedes-Benz B-class W246 facelift (2014-2018) sam control unit (left end of dash) Wiring diagrams

BACKUP LAMP BLU WIRE BLU/WHT WIRE BRN WIRE BRN/RED WIRE CAN B H CAN B L CAN C H CAN C L COMPUTER DATA LINES SYSTEM DUAL CLUTCH TRANSMISSION FULLY INTEGRATED TRANSMISSION CONTROL CONTROLLER UNIT FUSE 98 GRY WIRE GRY/BLU WIRE GRY/YEL WIRE HOT W/ CIRCUIT INNER LEFT REAR LAMP UNIT INNER RIGHT REAR LAMP UNIT LEFT REAR LAMP UNIT RED/WHT WIRE RIGHT REAR LAMP UNIT SAM CONTROL UNIT (LEFT END OF DASH) VEHICLE INTERIOR FUSE BOX W/ STATIC LED W/O STATIC LED CLA-CLASS B-CLASS GLA-CLASS YEL WIRE

BACKUP LAMP BACKUP LAMPS CIRCUIT BLK WIRE BLK/GRN WIRE BLK/ORG WIRE BLK/YEL WIRE BRN WIRE BRN/RED WIRE CAN B H CAN B L CLA CLASS CLA CLASS, GLA CLASS COMPUTER DATA LINES SYSTEM FUSE 98 GLA CLASS GRN WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/GRN WIRE GRY/ORG WIRE GRY/PNK WIRE GRY/RED WIRE HOT W/ CIRCUIT INNER RIGHT BRAKE LAMP INNER RIGHT REAR LAMP UNIT INNER RIGHT REAR LAMP UNIT (B-CLASS, W/O STATIC LED) NCA WIRE OUTER RIGHT BRAKE LAMP RED WIRE RED/WHT WIRE RIGHT LICENSE PLATE LAMP RIGHT REAR LAMP UNIT (B-CLASS) RIGHT REAR LAMP UNIT (CLA CLASS) RIGHT SIDE MARKER LAMP RIGHT TAIL LAMP RIGHT TAILLAMP, PARKING LAMP SAM CONTROL UNIT (LEFT END OF DASH) STOP LAMP STOP LAMP, TAILLAMP, PARKING LAMP TAILLAMP, PARKING LAMP VEHICLE INTERIOR FUSE BOX W/O STATIC LED W/ STATIC LED WHT WIRE YEL/WHT WIRE

30 FH BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/BRN WIRE BLU/GRN WIRE BLU/RED WIRE BLU/WHT WIRE BRN WIRE BRN/RED WIRE CAN B H CAN B L COMBINATION SWITCH COMPUTER DATA LINES COMPUTER DATA LINES SYSTEM DECOUPLING RELAY EXTERIOR LIGHTS SWITCH FRONT ELECTRICAL PREFUSE BOX FRONT FOG LAMP INDICATOR LAMP FUSE 4 FUSE 89 GRN WIRE GRN/BRN WIRE GRN/ORG WIRE GRN/RED WIRE GRN/WHT WIRE GRY/BLU WIRE GRY/GRN WIRE HEADLAMP FLASHER/ HIGH BEAM SWITCH HEADLAMP RANGE CONTROLLER HIGH BEAM INDICATOR LAMP HOT AT ALL TIMES HOT W/ CIRCUIT 15 RELAY ENERGIZED INNER LEFT REAR LAMP UNIT INSTRUMENT CLUSTER LEFT DAYTIME RUNNING LAMPS HEADLAMP LEFT FOG LAMP LEFT REAR FOG LAMP LOW BEAM INDICATOR LAMP LOW BEAM SWITCH ORG/GRN WIRE OVERHEAD CONTROL PANEL CONTROL UNIT RAIN/LIGHT SENSOR (W/ RAIN SENSOR) LIGHT SENSOR (W/O RAIN SENSOR) REAR FOG LAMP BUTTON REAR FOG LAMP INDICATOR LAMP RED/YEL WIRE RIGHT DAYTIME RUNNING LAMPS HEADLAMP RIGHT FOG LAMP SAM CONTROL UNIT (LEFT END OF DASH) STEERING COLUMN MODULE CONTROL UNIT SWITCH ILLUMINATION SYSTEM VEHICLE INTERIOR FUSE BOX YEL WIRE YEL/BLK WIRE YEL/BLU WIRE

BLK WIRE BLK/GRN WIRE BLK/RED WIRE BLK/VIO WIRE BLK/WHT WIRE BLK/YEL WIRE BLU/BLK WIRE BLU/BRN WIRE BLU/GRN WIRE BLU/RED WIRE BLU/WHT WIRE BRN WIRE BRN/RED WIRE CAN B H CAN B L CAN E H CAN E L COMBINATION SWITCH COMPUTER DATA LINES SYSTEM ENGINE COMPARTMENT FUSE, RELAY MODULE EXTERIOR LIGHTS SWITCH FRA-R FRONT FOG LAMP BUTTON FUSE 229 FUSE 231 FUSE 232 FUSE 236 FUSE 89 GRN WIRE GRN/BRN WIRE GRN/ORG WIRE GRN/RED WIRE GRN/WHT WIRE GRY/BLU WIRE GRY/GRN WIRE HEADLAMP FLASHER/ HIGH BEAM SWITCH HOT AT ALL TIMES HOT W/ CIRCUIT 15 RELAY ENERGIZED ILLUMINATION SWITCH LEFT ACTIVE CURVE ILLUMINATION ACTUATOR MOTOR LEFT FRONT EXTERIOR LIGHT LED ACTUATION MODULE LEFT FRONT LAMP UNIT LEFT HEADLAMP RANGE ADJUSTMENT ACTUATOR MOTOR LEFT LIGHT DISTRIBUTION ACTUATOR MOTOR LEFT XENON BULB W/ INTEGRATED IGNITION MODULE LEFT XENON LIGHT POWER SUPPLY MODULE LOW BEAM SWITCH ORG/BLK WIRE ORG/GRN WIRE OVERHEAD CONTROL PANEL CONTROL UNIT RAIN/LIGHT SENSOR (W/ RAIN SENSOR) LIGHT SENSOR (W/O RAIN SENSOR) REAR FOG LAMP BUTTON RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE RIGHT ACTIVE CURVE ILLUMINATION ACTUATOR MOTOR RIGHT FRONT EXTERIOR LIGHT LED ACTUATION MODULE RIGHT FRONT LAMP UNIT RIGHT HEADLAMP RANGE ADJUSTMENT ACTUATOR MOTOR RIGHT LIGHT DISTRIBUTION ACTUATOR MOTOR RIGHT XENON BULB W/ INTEGRATED IGNITION MODULE RIGHT XENON LIGHT POWER SUPPLY MODULE SAM CONTROL UNIT (LEFT END OF DASH) SIG STEERING COLUMN MODULE CONTROL UNIT (TOP OF STEERING COLUMN) UPLTFL L (+) UPLTFL R (+) VEHICLE INTERIOR FUSE BOX WHT/RED WIRE YEL WIRE YEL/BLK WIRE YEL/BLU WIRE

BLK/GRY WIRE BLK/VIO WIRE BRN WIRE BRN/BLU WIRE BRN/GRY WIRE BRN/RED WIRE BRN/VIO WIRE CAN B H CAN B L COMPUTER DATA LINES SYSTEM DRIVER SEAT CONTROL UNIT (UNDER DRIVER SEAT) FRONT PASSENGER SEAT CONTROL UNIT FUSE 36 FUSE 46 FUSE 59 FUSE 60 FUSE 84 GRY/BLK WIRE HOT AT ALL TIMES HOT W/ CIRCUIT LEFT FRONT BACKREST HEATED CUSHION LEFT FRONT HEATED SEAT BUTTON LEFT FRONT SEAT SITTING SURFACE HEATED CUSHION LIN 1 LIN IP ORG/BLU WIRE RED/BLK WIRE RED/BRN WIRE RED/WHT WIRE RIGHT FRONT BACKREST HEATED CUSHION RIGHT FRONT HEATED SEAT BUTTON RIGHT FRONT SEAT SITTING SURFACE HEATED CUSHION SAM CONTROL UNIT (LEFT END OF DASH) UPPER CONTROL PANEL CONTROL UNIT VEHICLE INTERIOR FUSE BOX

BLK WIRE BRN WIRE BRN/RED WIRE CAN B H CAN B L CAN E H CAN E L CENTER HORNS BUTTON COMPUTER DATA LINES SYSTEM DECOUPLING RELAY ENGINE COMPARTMENT FUSE, RELAY MODULE FANFARE HORN RELAY FRONT ELECTRICAL PREFUSE BOX FUSE 205 FUSE 32 GRN WIRE GRN/WHT WIRE HOT AT ALL TIMES LEFT FANFARE HORN LEFT FANFARE HORN SYSTEM BUTTON NCA WIRE RED WIRE REL FF RELAY ENERGIZED RIGHT FANFARE HORN RIGHT FANFARE HORN SYSTEM BUTTON SAM CONTROL UNIT (LEFT END OF DASH) STEERING COLUMN MODULE CONTROL UNIT STEERING WHEEL CLOCK SPRING CONTACT STEERING WHEEL ELECTRONICS VEHICLE INTERIOR FUSE BOX W/O ECO START/STOP FUNCTION YEL WIRE YEL/BLK WIRE

ACOUSTIC TURN SIGNAL LIGHT FUNCTION CHECK ANTI-LOCK BRAKE SYSTEM INDICATOR LAMP BLU WIRE BLU/BLK WIRE BLU/BRN WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/ORG WIRE BLU/VIO WIRE BLU/WHT WIRE BRAKE SYSTEM WARNING LAMP BRN WIRE BRN/RED WIRE BRN/YEL WIRE CAN B H CAN B L CLA, GLA-CLASS B-CLASS COLLISION PREVENTION ASSIST WARNING LAMP COMPUTER DATA COMPUTER DATA LINES SYSTEM COOLANT EXPANSION RESERVOIR FILL LEVEL SENSOR (DUAL CHAMBER) COOLANT LEVEL SWITCH COOLANT TEMPERATURE GAUGE COOLANT TEMPERATURE WARNING LAMP DISTRONIC WARNING LAMP ELECTRIC PARKING BRAKE CONTROL UNIT ELECTRONIC STABILITY PROGRAM WARNING LAMP ENGINE DIAGNOSIS INDICATOR LAMP ESP/ASR OFF WARNING LAMP FRONT FOG LAMP INDICATOR LAMP FUEL LEVEL INDICATOR GAUGE FUEL RESERVE INDICATOR LAMP FUSE 73 FUSE 84 FUSE 88 GEAR INDICATOR (PRND) GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GRN/GRY WIRE GRN/WHT WIRE GRN/YEL WIRE HIGH BEAM INDICATOR LAMP HOT AT ALL TIMES INSTRUMENT CLUSTER INSTRUMENT ILLUMINATION INSTRUMENT ILLUMINATION BRIGHTNESS CONTROL LEFT TURN SIGNAL IND LAMP LIN 1 LINES SYSTEM LOW BEAM INDICATOR LAMP MULTI-FUNCTION DISPLAY NCA WIRE ORG/BLU WIRE OUTSIDE TEMPERATURE SENSOR PARKING BRAKE INDICATOR LAMP POWER DISPLAY POWER INDICATOR REAR FOG LAMP INDICATOR LAMP RED WIRE RED/BLK WIRE RED/WHT WIRE RIGHT TURN SIGNAL IND LAMP SAM CONTROL UNIT (LEFT END OF DASH) SEAT BELT WARNING LAMP SIG SPEEDOMETER STANDING LAMPS INDICATOR LAMP SUPPLEMENTAL RESTRAINT SYSTEM INDICATOR LAMP SW 1 SW 3 SW 4 SW 6 TACHOMETER TIRE PRESSURE MONITOR WARNING LAMP TRANSMISSION MODE DISPLAY VEHICLE INTERIOR FUSE BOX W/ 4 MATIC W/O 4 MATIC W/ DISTRONIC PLUS YEL/BLU WIRE

BLU WIRE BLU/WHT WIRE BRN WIRE BRN/RED WIRE BRN/WHT WIRE CAN B H CAN B L COMPUTER DATA LINES SYSTEM DIAG FUSE 39 FUSE 41 GRN WIRE GRN/WHT WIRE GRY WIRE GRY/YEL WIRE HALL ORG/GRN WIRE OVERHEAD CONTROL PANEL CONTROL UNIT PANORAMIC SLIDING ROOF CONTROL MODULE PANORAMIC SLIDING ROOF CONTROL UNIT PANORAMIC SLIDING ROOF HALL SENSOR 1 PANORAMIC SLIDING ROOF HALL SENSOR 2 PANORAMIC SLIDING ROOF MOTOR PANORAMIC SLIDING ROOF ROLLER SUN BLIND DRIVE UNIT PANORAMIC SLIDING ROOF SWITCH PD MOH PD MOV PD MSH PD MSV R SIG RED WIRE RED/BLU WIRE RED/WHT WIRE RELAY ENERGIZED SAM CONTROL UNIT (LEFT END OF DASH) SENSOR 1 SENSOR 2 STRAPPED DOWN SUN BLIND MOTOR VEHICLE INTERIOR FUSE BOX VIO WIRE WHT WIRE YEL WIRE

AH BL AH FRA L AH FRA R AH NSL AH RFL AH SL L AH SL R AHK I O AHK N I O BLK WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/RED WIRE BLK/WHT WIRE BLU WIRE BRN WIRE BRN/BLK WIRE BRN/RED WIRE CAN B H CAN B L COMPUTER DATA LINES SYSTEM FUSE 29 FUSE 30 FUSE 75 FUSE 76 FUSE 77 GLA CLASS GRN/WHT WIRE GRY/BLK WIRE GRY/RED WIRE GRY/YEL WIRE HOT AT ALL TIMES HOT W/ CIRCUIT 15 RELAY ENERGIZED RED/BLK WIRE RED/GRY WIRE RED/WHT WIRE RED/YEL WIRE SAM CONTROL UNIT (LEFT END OF DASH) TRAILER HITCH RELEASE SWITCH TRAILER RECOGNITION CONTROL UNIT TRAILER SOCKET VEHICLE INTERIOR FUSE BOX WHT WIRE WHT/BLK WIRE

AUTOMATIC TRANSMISSION MODE BUTTON (W/O DYNAMIC SELECT) AUX BLK WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BLU/WHT WIRE BRN WIRE BRN/RED WIRE CAN B H CAN B L CAN C H CAN C L CAN E H CAN E L CLA CLASS, GLA CLASS CLUTCH TEMPERATURE SENSOR COMPUTER DATA LINES SYSTEM CONTROL VALVE DIRECT SELECT LEVER DOUBLE CLUTCH DOUBLE CLUTCH TRANSMISSION DRIVE SHAFT RPM SENSOR DUAL CLUTCH TRANSMISSION FULLY INTEGRATED TRANSMISSION CONTROL UNIT DYNAMIC SELECT SWITCH ELECTRIC AUXILIARY OIL PUMP ELECTRONIC IGNITION SWITCH CONTROL UNIT EMS ENGINE COMPARTMENT FUSE, RELAY MODULE ENGINE SPEED SENSOR EXTENDED RANGE MODE BUTTON (B-CLASS) FUSE 217 FUSE 220 FUSE 32 FUSE 84 GEAR CONTROL CONTROL VALVE, GEAR CONTROL CONTROL VALVE, GEAR CYLINDER PRESSURE CONTROL VALVE CONTROL VALVE GEAR IND GRN WIRE GRN/WHT WIRE HALL SENSOR 1 HALL SENSOR 2 HALL SENSOR 3 HOT AT ALL TIMES HOT W/ CIRCUIT INSTRUMENT CLUSTER LIN 1 LIN 1 IP M TRANSMISSION MODE BUTTON ME-SFI (ME) CONTROL UNIT MOTOR NCA WIRE ORG/BLU WIRE PARK PAWL CONTROL UNIT CIRCUIT 87 RELAY PARK PAWL LIFT SOLENOID PARK PAWL POSITION SENSOR PRESSURE SENSOR PRND RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE SAM CONTROL UNIT (LEFT END OF DASH) SHIFT FORK SHIFT FORK POSITION POSITION SENSOR 3 SENSOR 1 SHIFT FORK SHIFT FORK POSITION POSITION SENSOR 4 SENSOR 2 SIG STEERING COLUMN MODULE CONTROL UNIT STEERING WHEEL CLOCK SPRING CONTACT STEERING WHEEL DOWNSHIFT BUTTON STEERING WHEEL ELECTRONICS (IN STEERING WHEEL) STEERING WHEEL UPSHIFT BUTTON SYSTEM PRESSURE CONTROL VALVE PARK PAWL SWITCHOVER VALVE TRANSMISSION HOLLOW SHAFT RPM SENSOR TRANSMISSION MODE BUTTON TRANSMISSION MODE DISPLAY TRANSMISSION OIL COOLING COOLANT CIRCULATION PUMP UPPER CONTROL PANEL CONTROL UNIT VEHICLE INTERIOR FUSE BOX W/ DUAL CLUTCH TRANSMISSION YEL WIRE