Mercedes-Benz B-class W246 facelift (2014-2018) yel Wiring diagrams

BLK WIRE BLK/YEL WIRE BLU/YEL WIRE BRN WIRE BRN/BLK WIRE BRN/RED WIRE CAN B H CAN B L COMPUTER DATA LINES SYSTEM ELECTRIC REFRIGERANT COMPRESSOR ENGINE CONTROLS SYSTEM FRONT ELECTRICAL PREFUSE BOX FUSE 5 GRN/BLK WIRE GRN/BRN WIRE GRN/ORG WIRE GRN/RED WIRE GRN/YEL WIRE HIGH-VOLTAGE DISCONNECT DEVICE HIGH-VOLTAGE POWER DISTRIBUTOR HIGH-VOLTAGE PTC HEATER HOT AT ALL TIMES HUMIDITY/ TEMPERATURE SENSOR HV- INTERIOR TEMPERATURE SENSOR W/ INTEGRATED FAN LIGHT SENSOR (-) LIN 1 LIN 1 IP NCA WIRE ORG/ WIRE ORG/BLU WIRE ORG/GRN WIRE ORG/RED WIRE OUTSIDE TEMPERATURE SENSOR OVERHEAD CONTROL PANEL CONTROL UNIT POT POT POT PRE AIR CONDITIONING BUTTON RAIN SENSOR RAIN/LIGHT SENSOR (W/ RAIN SENSOR) LIGHT SENSOR (W/O RAIN SENSOR) RED WIRE RED/BLK WIRE RED/BRN WIRE S- SHD SAM CONTROL UNIT (LEFT END OF DASH) SHD SIG UPPER CONTROL PANEL CONTROL UNIT YEL WIRE

BATTERY COOLANT PUMP SWITCHOVER VALVE BATTERY COOLING SYSTEM COOLANT PUMP 1 BATTERY COOLING SYSTEM COOLANT PUMP 2 BLK WIRE BLK/BLU WIRE BLK/RED WIRE BLU WIRE BLU/BRN WIRE BLU/GRY WIRE BLU/RED WIRE BRN WIRE BRN/BLK WIRE CAN E H CAN E L CAN EL H CAN EL L CHARGER CONTROL UNIT COMPUTER DATA LINES SYSTEM COOLANT TEMPERATURE SENSOR DOWNSTREAM OF HIGH-VOLTAGE BATTERY COOLANT TEMPERATURE SENSOR UPSTREAM OF HIGH-VOLTAGE BATTERY DRIVE COOLANT TEMPERATURE SENSOR DRIVETRAIN CONTROL UNIT ELECTRIC DRIVE, CHARGER COOLANT PUMP ENGINE COMPARTMENT FUSE, RELAY MODULE FUSE 208 FUSE 212 FUSE 213 FUSE 214 GRN WIRE GRN/WHT WIRE HOT W/ TERMINAL PWM RED WIRE RED/BLU WIRE RED/GRN WIRE RED/WHT WIRE SIG THERMAL MANAGEMENT CONTROL UNIT WHT WIRE WHT/BLU WIRE WHT/GRY WIRE WHT/RED WIRE WHT/YEL WIRE YEL WIRE YEL/BLU WIRE YEL/BRN WIRE YEL/GRN WIRE YEL/GRY WIRE YEL/RED WIRE

BLU WIRE BLU/YEL WIRE BRN WIRE BRN/GRN WIRE BRN/RED WIRE CAN B H CAN B L COMPUTER DATA LINES SYSTEM DRIVER-SIDE INSTRUMENT PANEL AMBIANCE ILLUMINATION ENGINE COMPARTMENT FUSE, RELAY MODULE FRONT CENTER CONSOLE CUP HOLDER AMBIANCE ILLUMINATION FRONT PASSENGER SEAT AMBIANCE ILLUMINATION FRONT PASSENGER SEAT CONTROL UNIT FRONT PASSENGER SIDE BAG SQUIB FUSE 236 GRN/PNK WIRE GRN/YEL WIRE GRY/BLK WIRE GRY/WHT WIRE HOT AT ALL TIMES I/P LEFT REAR SEAT AMBIANCE ILLUMINATION ORG/ WIRE PASSENGER-SIDE INSTRUMENT PANEL AMBIANCE ILLUMINATION PNK/WHT WIRE RED/BLK WIRE RED/GRN WIRE RIGHT FRONT FOOTWELL LAMP RIGHT REAR FOOTWELL LAMP RIGHT REAR SEAT AMBIANCE ILLUMINATION SAM CONTROL UNIT (LEFT END OF DASH) SIG TOP OF ENGINE) TRUNK LID/LIFTGATE AMBIENT LAMP VIO/BLU WIRE VIO/YEL WIRE WHT WIRE YEL WIRE YEL/BLU WIRE

BLK WIRE BLU WIRE BLU/YEL WIRE BRN WIRE BRN/GRN WIRE DRIVER SEAT AMBIANCE ILLUMINATION DRIVER SIDE BAG SQUIB DRIVER-SIDE INSTRUMENT PANEL AMBIANCE ILLUMINATION FRONT PASSENGER SEAT AMBIANCE ILLUMINATION FRONT PASSENGER SIDE BAG SQUIB GRN WIRE GRN/PNK WIRE GRN/YEL WIRE GRY/BLK WIRE GRY/WHT WIRE LEFT FRONT FOOTWELL LAMP LEFT REAR DOOR AMBIANCE ILLUMINATION LEFT REAR DOOR HANDLE ILLUMINATION LEFT REAR FOOTWELL LAMP ORG/ WIRE PASSENGER-SIDE INSTRUMENT PANEL AMBIANCE ILLUMINATION PNK/WHT WIRE RED/BLK WIRE RIGHT FRONT FOOTWELL LAMP RIGHT REAR FOOTWELL LAMP RIGHT REAR SEAT AMBIANCE ILLUMINATION VIO/BLU WIRE WHT WIRE YEL WIRE YEL/BLU WIRE

BLK WIRE BRN WIRE CAN E H CAN E L COMPUTER DATA LINES SYSTEM ELECTRIC POWER STEERING ACTUATOR MOTOR ELECTRIC POWER STEERING TORQUE SENSOR ELECTRICAL POWER STEERING CONTROL UNIT FRONT ELECTRICAL PREFUSE BOX FUSE 3 GRN WIRE GRN/WHT WIRE HOT AT ALL TIMES INSTRUMENT CLUSTER RED WIRE WHT WIRE YEL WIRE

BATTERY MANAGEMENT SYSTEM CONTROL UNIT BRN WIRE BRN/RED WIRE CAMERA COVER CONTROL UNIT CAN B H CAN B L CAN EL H CAN EL L CAN I H CAN I L CAN L H CAN L L CAN-EL L LV CHARGER CONTROL UNIT DC/DC CONVERTER CONTROL UNIT DRIVETRAIN SENSOR CAN (CAN I) POTENTIAL DISTRIBUTOR ELECTRICAL CONNECTOR ELECTRIC DRIVE CAN (CAN EL) POTENTIAL DISTRIBUTOR ELECTRICAL CONNECTOR 1 ELECTRIC DRIVE CAN (CAN EL) POTENTIAL DISTRIBUTOR ELECTRICAL CONNECTOR 2 ELECTRIC DRIVE CAN (CAN EL) POTENTIAL DISTRIBUTOR ELECTRICAL CONNECTOR 3 ELECTRIC VEHICLE SOUND GENERATOR EMERGENCY CALL SYSTEM CONTROL UNIT GATEWAY FOR POWERTRAIN CONTROL UNIT HYBRID CAN (CAN L) POTENTIAL DISTRIBUTOR ELECTRICAL CONNECTOR ME-SFI (ME) CONTROL UNIT NCA WIRE NOX SENSOR CONTROL UNIT PARK PAWL CONTROL UNIT POWER ELECTRONICS CONTROL UNIT RED/YEL WIRE TELEMATICS SERVICES COMMUNICATION MODULE THERMAL MANAGEMENT CONTROL UNIT TRUNK LID/ LIFTGATE CONTROL UNIT DRIVETRAIN CONTROL UNIT W/ EMERGENCY CALL SYSTEM W/O EMERGENCY CALL SYSTEM WHT WIRE WHT/RED WIRE YEL WIRE YEL/BLK WIRE YEL/GRY WIRE YEL/RED WIRE

AMBIENT LAMP AUTOMATIC DIMMING MIRROR BLK WIRE BRN WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE CAN B H CAN B L COMPUTER DATA LINES SYSTEM FORWARD AUTOMATIC DIMMING MIRROR LIGHT SENSOR FUSE 23 FUSE 24 FUSE 82 GARAGE DOOR OPENER GARAGE DOOR OPENER BUTTON 1 GARAGE DOOR OPENER BUTTON 2 GARAGE DOOR OPENER BUTTON 3 GARAGE DOOR OPENER INDICATOR LAMP GRN WIRE GRN/BRN WIRE GRN/ORG WIRE GRN/RED WIRE GRY WIRE GRY/BLU WIRE HOT AT ALL TIMES HUMIDITY/ TEMPERATURE SENSOR INSIDE REAR VIEW MIRROR INSIDE REAR VIEW MIRROR DIMMING LEFT FRONT DOOR CONTROL UNIT LEFT INSIDE REAR VIEW MIRROR INTERIOR LAMP LEFT OUTSIDE MIRROR LIGHT SENSOR (IF EQUIPPED) LIN ORG/ WIRE ORG/GRN WIRE OVERHEAD CONTROL PANEL CONTROL UNIT RAIN SENSOR (IF EQUIPPED) RAIN/LIGHT SENSOR REARWARD AUTOMATIC DIMMING MIRROR LIGHT SENSOR RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/WHT WIRE RIGHT FRONT DOOR CONTROL UNIT RIGHT INSIDE REAR VIEW MIRROR INTERIOR LAMP RIGHT OUTSIDE MIRROR SAM CONTROL UNIT (LEFT END OF DASH) VEHICLE INTERIOR FUSE BOX VIO WIRE W/ EXTERIOR LIGHT, VISION PACKAGE YEL WIRE

ACCELERATE, SET SWITCH ACCEPT/TERMINATE PHONE CALL BUTTON BACK, VOICE CONTROL SYSTEM OFF BUTTON BLK WIRE BLU WIRE BRN WIRE BUTTON +, - FOR SETTING SPECIFIC FUNCTIONS, VOLUME CONTROL CAN E H CAN E L CENTER HORNS BUTTON COMBINATION SWITCH COMPUTER DATA LINES SYSTEM CRUISE CONTROL LEVER DECELERATE, SET SWITCH DIRECT SELECT LEVER DISTRONIC CONTROL (IF EQUIPPED) DRIVER AIR BAG SQUIB 1 DRIVER AIR BAG SQUIB 2 FUSE 32 FUSE 56 GRN WIRE GRN/ORG WIRE GRN/WHT WIRE GRY/BLU WIRE HEADLAMP FLASHER/HIGH BEAM SWITCH HOT AT ALL TIMES HOT W/ CIRCUIT INDICATOR SWITCH LEFT FANFARE HORN SYSTEM BUTTON LEFT MULTI-FUNCTION STEERING WHEEL BUTTON GROUP LIFTGATE WINDSHIELD WASHER SYSTEM SWITCH LOW BEAM SWITCH MULTI- FUNCTION MUTE FUNCTION BUTTON NOT USED NOT USED OFF SWITCH OK BUTTON PNK WIRE RED WIRE RED/BLU WIRE RESET, BACK BUTTON RESUME FROM MEMORY SWITCH RIGHT RIGHT FANFARE HORN SYSTEM BUTTON SCROLL FORWARD/ BACK BUTTON SIG STEERING STEERING COLUMN MODULE CONTROL UNIT STEERING WHEEL ANGLE SENSOR STEERING WHEEL CLOCK SPRING CONTACT STEERING WHEEL DOWNSHIFT BUTTON STEERING WHEEL ELECTRONICS STEERING WHEEL UPSHIFT BUTTON STEERING WHEEL VIBRATION MOTOR SUPPLEMENTAL RESTRAINTS SYSTEM SYSTEM SELECTION BUTTON TURN SIGNAL LAMPS SWITCH VEHICLE INTERIOR FUSE BOX VIO WIRE VOICE CONTROL SYSTEM ON BUTTON W/ DUAL CLUTCH TRANSMISSION WHEEL BUTTON GROUP WINDSHIELD WASHER SYSTEM SWITCH WIPE SWITCH YEL WIRE

BLU WIRE BLU/BRN WIRE BLU/ORG WIRE BLU/VIO WIRE BLU/WHT WIRE BRAKE FLUID LEVEL SWITCH BRAKE SYSTEM WARNING LAMP BRN WIRE BRN/PNK WIRE BRN/RED WIRE BRN/WHT WIRE CAN B H CAN B L CAN E H CAN E L COMPUTER DATA LINES SYSTEM DRIVER SEAT BELT BUCKLE RESTRAINT SYSTEM SWITCH ELECTRIC PARKING BRAKE CONTROL UNIT ELECTRIC PARKING BRAKE SWITCH ENGINE COMPARTMENT FUSE, RELAY MODULE FUSE 23 FUSE 236 FUSE 38 FUSE 73 FUSE 88 GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GRN/GRY WIRE GRN/ORG WIRE GRN/WHT WIRE GRN/YEL WIRE GRY/BLU WIRE HOT AT ALL TIMES HOT W/ CIRCUIT INSTRUMENT CLUSTER LEFT FRONT DOOR CONTROL UNIT LEFT FRONT DOOR LOCK LEFT FRONT DOOR ROTARY TUMBLER SWITCH MULTI-FUNCTION DISPLAY NCA WIRE ORG/BLU WIRE PARKING BRAKE INDICATOR LAMP RED WIRE RED/BLK WIRE RED/GRN WIRE RED/YEL WIRE RIGHT FRONT BRAKE WEAR SENSOR SAM CONTROL UNIT SEAT BELT WARNING LAMP SIG SUPPLEMENTAL RESTRAINT SYSTEM CONTROL UNIT SW 1 SW 3 SW 4 SW 6 VEHICLE INTERIOR FUSE BOX YEL WIRE

50 RELAY (DIAGRAM 2 OF 7) BLK/RED WIRE BLU WIRE BLU/BRN WIRE BLU/GRN WIRE BLU/YEL WIRE BRN WIRE BRN/RED WIRE CAN B H CAN B L COMPUTER DATA LINES SYSTEM COOLANT TEMPERATURE SENSOR DOWNSTREAM OF HIGH-VOLTAGE BATTERY COOLANT TEMPERATURE SENSOR UPSTREAM OF HIGH-VOLTAGE BATTERY COOLANT TEMPERATURE WARNING LAMP DEFOGGER SYSTEM DRIVE COOLANT TEMPERATURE SENSOR ENGINE COMPARTMENT FUSE, RELAY MODULE ENGINE DIAGNOSIS INDICATOR LAMP FROM CIRCUIT 15 RELAY (UNLATCHED) (DIAGRAM 2 OF 7) FROM STARTER CIRCUIT FUSE 206 FUSE 210 FUSE 212 FUSE 213 FUSE 214 FUSE 215 GRN WIRE GRN/BLU WIRE HEATING ELEMENT HIGH-VOLTAGE BATTERY COOLANT CIRCUIT HEATING ELEMENT INSTRUMENT CLUSTER MULTIFUNCTION DISPLAY N/A NCA WIRE ORG/ WIRE POT POWER DISPLAY POWER INDICATOR RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE RES FUSE 209 SIG TEMPERATURE SENSOR THERMAL MANAGEMENT CONTROL UNIT (BEHIND REAR OF LEFT CARGO AREA TRIM PANEL) VIO WIRE WHT/BLU WIRE WHT/GRY WIRE WHT/RED WIRE WHT/YEL WIRE YEL WIRE YEL/BLU WIRE YEL/BRN WIRE