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

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 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

BLK WIRE BLK/GRY WIRE BLU/YEL WIRE BRN WIRE BRN/BLU WIRE BRN/RED WIRE CAN B H CAN B L CAN E H CAN E L COMBINATION SWITCH COMPUTER DATA LINES SYSTEM DECOUPLING RELAY FRONT ELECTRICAL PREFUSE BOX FUSE 239 FUSE 32 FUSE 56 FUSE 82 FUSE 96 GRN WIRE GRN/BRN WIRE GRN/ORG WIRE GRN/RED WIRE GRN/WHT WIRE GRY WIRE HOT AT ALL TIMES HOT W/ CIRCUIT INSTRUMENT CLUSTER LIFTGATE WINDSHIELD WASHER SYSTEM SWITCH MOT- NCA WIRE ORG/GRN WIRE OVERHEAD CONTROL PANEL UNIT RAIN/LIGHT SENSOR (W/ RAIN SENSOR) LIGHT SENSOR (W/O RAIN SENSOR) REAR WINDOW WIPER RELAY RED WIRE RED/BLU WIRE RED/VIO WIRE RED/WHT WIRE SAM CONTROL UNIT (LEFT END OF DASH) SIG SPRAY NOZZLE HEATER SPRAY NOZZLE HOSE HEATER STEERING COLUMN MODULE CONTROL UNIT TAILGATE WIPER MOTOR VEHICLE INTERIOR FUSE BOX VIO WIRE WINDSHIELD WASHER SYSTEM PUMP WINDSHIELD WASHER SYSTEM SWITCH WINDSHIELD WASHER SYSTEM WASHER FLUID LEVEL SWITCH WINDSHIELD WIPER ON/OFF RELAY WIPER LEVEL 1/2 RELAY WIPER MOTOR WIPER SWITCH WMV A/D WMV PP WMV WS YEL/GRN WIRE YEL/VIO WIRE