Mercedes-Benz A-class W177 (2018-2023) flex-e bm Wiring diagrams

BLK WIRE BLK/BLU WIRE BLK/RED WIRE BLK/VIO WIRE BLU WIRE BLU/BLK WIRE BLU/BRN WIRE BLU/YEL WIRE BRAKE FLUID LEVEL SWITCH BRN WIRE BRN/BLK WIRE BRN/WHT WIRE BRN/YEL WIRE CAN H H CAN H L CENTRAL CONTROL MODULE COMPUTER DATA LINES SYSTEM ELECTRONIC STABILITY PROGRAM CONTROL UNIT ENGINE COMPARTMENT FUSE, RELAY MODULE EXTERIOR LIGHTS, ELECTRIC PARKING BRAKE SWITCH GROUP FLEX-E BM FLEX-E BP FUSE 23 FUSE 24 FUSE 65 FUSE 72 GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/BLU WIRE GRY/WHT WIRE HOT W/ BATTERY DISCONNECT SWITCH RELAY ENERGIZED MOT GND/(+) MOT GND/(+) 31 PNK WIRE PNK/GRN WIRE PNK/RED WIRE RED/BLK WIRE RED/BLU WIRE RED/YEL WIRE RIGHT FRONT BRAKE WEAR SENSOR SIG SIG (+) 52 SIG (1) SIG (2) SIG 3 SIG 4 SIG GND VIO WIRE W/ ENGINE COMPARTMENT TERMINAL 15 RELAY ENERGIZED WHT WIRE WHT/YEL WIRE YEL WIRE

ACTIVE BRAKE ASSIST CONTROLLER UNIT BLK/RED WIRE BRN WIRE CAN HMI H CAN HMI L COMPUTER DATA LINES SYSTEM ENGINE COMPARTMENT FUSE, RELAY MODULE FLEX-E BM FUSE 111 FUSE 70 GRN WIRE HOT W/ BATTERY DISCONNECT SWITCH RELAY ENERGIZED HOT W/ ENGINE COMPARTMENT TERMINAL 15 RELAY ENERGIZED INSTRUMENT CLUSTER CONTROL UNIT PNK FLEX-E BP WIRE RED WIRE VEHICLE INTERIOR FUSE, RELAY MODULE VIO WIRE VIO/WHT WIRE

BLK WIRE BLK/RED WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BLU/WHT WIRE BRN WIRE CAN H H CAN H L COMPUTER DATA LINES SYSTEM ELECTRONIC STABILITY PROGRAM CONTROL UNIT ENGINE COMPARTMENT FUSE, RELAY MODULE FLEX-E BM FLEX-E BP FLEX-E BP PNK FLEX-E BM WIRE FUSE 107 FUSE 110 FUSE 41 FUSE 47 FUSE 70 GRN WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/BLU WIRE GRY/WHT WIRE HOT W/ BATTERY DISCONNECT SWITCH RELAY ENERGIZED HOT W/ ENGINE COMPARTMENT TERMINAL 15 RELAY ENERGIZED INTELLIGENT DRIVE CONTROL UNIT (UNDER FRONT PASSENGER SEAT) ME-SFI (ME) CONTROL UNIT MOT- PNK WIRE RED WIRE RED/GRN WIRE RED/ORG WIRE RED/YEL WIRE SENS (+) SENS GND SENS 1 SENS 2 SIG GND STEERING COLUMN MODULE CONTROL UNIT STOP LAMP SWITCH THROTTLE VALVE ACTUATOR VEHICLE INTERIOR FUSE, RELAY MODULE WHT WIRE YEL WIRE

ADAPTIVE DAMPING SYSTEM CONTROL UNIT BLK WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/WHT WIRE BRN WIRE COMPUTER DATA LINES SYSTEM FLEX-E BM FLEX-E BP FUSE 114 GRN WIRE GRN/GRY WIRE GRN/YEL WIRE GRY WIRE HOT W/ BATTERY DISCONNECT SWITCH RELAY ENERGIZED LEFT FRONT AXLE DAMPING VALVE UNIT LEFT FRONT LEVEL SENSOR LEFT REAR AXLE DAMPING VALVE UNIT LEFT REAR LEVEL SENSOR NCA WIRE ORG/ WIRE PNK WIRE RED/VIO WIRE RIGHT FRONT AXLE DAMPING VALVE UNIT RIGHT FRONT LEVEL SENSOR RIGHT REAR AXLE DAMPING VALVE UNIT RIGHT REAR LEVEL SENSOR SIG SIG (+) VLV H VEHICLE INTERIOR FUSE, RELAY MODULE VIO WIRE VLV H VLV L WHT WIRE WHT/YEL WIRE YEL WIRE YEL/BLK WIRE YEL/GRN WIRE

ADAPTIVE DAMPING SYSTEM CONTROL UNIT BLK WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/WHT WIRE BRN WIRE COMPUTER DATA LINES SYSTEM FLEX-E BM FLEX-E BP FUSE 114 GRN WIRE GRN/GRY WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE HOT W/ BATTERY DISCONNECT SWITCH RELAY ENGERGISED LEFT FRONT AXLE DAMPING VALVE UNIT LEFT FRONT BODY ACCELERATION SENSOR LEFT FRONT LEVEL SENSOR LEFT REAR AXLE DAMPING VALVE UNIT LEFT REAR BODY ACCELERATION SENSOR LEFT REAR LEVEL SENSOR NCA WIRE ORG/ WIRE PNK FLEX-E BM WIRE PNK WIRE RED/VIO WIRE RIGHT FRONT AXLE DAMPING VALVE UNIT RIGHT FRONT BODY ACCELERATION SENSOR RIGHT FRONT LEVEL SENSOR RIGHT REAR AXLE DAMPING VALVE UNIT RIGHT REAR LEVEL SENSOR SIG VEHICLE INTERIOR FUSE, RELAY MODULE VIO WIRE VLV H VLV L WHT WIRE WHT/YEL WIRE YEL WIRE YEL/BLK WIRE YEL/GRN WIRE YEL/WHT WIRE

BRN WIRE CAN LR H CAN LR L COMPUTER DATA LINES SYSTEM FLEX-E BM FLEX-E BP FUSE 164 GRN WIRE HOT W/ BATTERY DISCONNECT SWITCH RELAY ENERGIZED NCA WIRE PNK WIRE RED/WHT WIRE SENS GND SIG STEERING COLUMN MODULE CONTROL UNIT STEERING WHEEL ELECTRONICS STEERING WHEEL HEATER TEMP VEHICLE INTERIOR FUSE, RELAY MODULE

BLK WIRE BLK/VIO WIRE BLU WIRE BLU/BRN WIRE BRN WIRE BRN/BLK WIRE BRN/RED WIRE BRN/WHT WIRE CAN B H CAN B L CAN HMI H CAN HMI L COMPUTER DATA LINES SYSTEM DRIVER DOOR CENTRAL LOCKING INSIDE DOOR HANDLE SWITCH DRIVER DOOR CONTROL UNIT (IN DRIVER FRONT DOOR) DRIVER DOOR HANDLE ILLUMINATION DRIVER SIDE OUTSIDE MIRROR EXTERIOR LIGHTS, ELECTRIC PARKING BRAKE SWITCH GROUP FLEX-E BM FLEX-E BP FRONT CIGARETTE LIGHTER W/ ASHTRAY ILLUMINATION FUSE 110 FUSE 132 FUSE 154 FUSE 156 FUSE 161 FUSE 163 GRN WIRE GRY WIRE GRY/BLU WIRE GRY/RED WIRE HOT AT ALL TIMES HOT W/ BATTERY DISCONNECT SWITCH RELAY ENERGIZED ILLU INSTRUMENT CLUSTER LEFT REAR DOOR CENTRAL LOCKING INSIDE DOOR HANDLE SWITCH LEFT REAR DOOR CONTROL UNIT LEFT REAR DOOR HANDLE ILLUMINATION LEFT REAR POWER WINDOW SWITCH PNK WIRE PNK/RED WIRE RED WIRE RED/BLU WIRE RED/GRN WIRE RED/ORG WIRE RED/YEL WIRE SENS GND SIG SIG (1) SIG (2) SIG 3 STEERING COLUMN MODULE CONTROL UNIT VEHICLE INTERIOR FUSE, RELAY MODULE VIO WIRE VIO/WHT WIRE

ADDITIONAL BATTERY ADDITIONAL BATTERY FUSE BLK WIRE BLK/ORG WIRE BLK/WHT WIRE BLU WIRE BLU/WHT WIRE BRN WIRE BRN/BLK WIRE BRN/GRY WIRE BRN/PNK WIRE BRN/RED WIRE CAN B H CAN B L CAN HMI H CAN HMI L CAN PER H CAN PER L CAN-D H CAN-D L CENTER CONSOLE KEYLESS GO ANTENNA CENTRAL CONTROL MODULE COMPUTER DATA LINES SYSTEM DCS (+) SIG 1 DRIVER DOOR CONTROL UNIT DRIVER DOOR KEYLESS-GO DOOR HANDLE DRIVETRAIN CONTROL UNIT ELECTRIC STEERING LOCK CONTROL UNIT ELECTRONIC IGNITION SWITCH CONTROL UNIT ENGINE START/STOP BUTTON FLEX-E BM FLEX-E BP FLEX-E BP PNK FLEX-E BM WIRE FROM VEHICLE INTERIOR FUSE, RELAY MODULE (DIAGRAM 3 OF 7) FROM VEHICLE INTERIOR FUSE, RELAY MODULE (DIAGRAM 4 OF 7) FRONT PASSENGER DOOR KEYLESS-GO DOOR HANDLE GRN WIRE GRN/BLU WIRE GRN/WHT WIRE GRY WIRE GRY/BLK WIRE GRY/WHT WIRE GRY/YEL WIRE ILLU KAPA LEFT REAR KEYLESS GO DOOR HANDLE LEFT UNDERFLOOR KEYLESS-GO ANTENNA LF 1 LF 2 LF MID LOAD COMPARTMENT KEYLESS-GO ANTENNA ORG/ WIRE ORG/BLU WIRE P NOT PNK FLEX-E BM WIRE PNK FLEX-E BP WIRE PNK/GRN WIRE RED WIRE RED/BLU WIRE RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE REL C (+) RIGHT REAR KEYLESS GO DOOR HANDLE RIGHT UNDERFLOOR KEYLESS-GO ANTENNA SIG TO STARTER BATTERY PREFUSE BOX (DIAGRAM 1 OF 7) VIO WIRE VIO/WHT WIRE W/ VEHICLE ACCESS, DRIVE AUTHORIZATION VIA MOBILE PHONE WHT WIRE YEL WIRE YEL/BRN WIRE YEL/GRN WIRE

AB 1 (+) AB 1 GND AB 2 (+) AB 2 GND BLK/YEL WIRE BLU/WHT WIRE BRN WIRE CAN LR H CAN LR L COMPUTER DATA LINES SYSTEM FLEX-E BM FLEX-E BP FUSE 110 FUSE 164 GRN WIRE GRN/GRY WIRE GRN/YEL WIRE HEAD UNIT MULTI-FUNCTION STEERING WHEEL BUTTON GROUP HORN CONTACT PLATE HOT W/ BATTERY DISCONNECT SWITCH RELAY ENERGIZED INSTRUMENT CLUSTER MULTI-FUNCTION STEERING WHEEL BUTTON GROUP LIN NCA WIRE PNK WIRE RED/ORG WIRE RED/WHT WIRE SENS GND SIG SIG GND STEERING COLUMN MODULE CONTROL UNIT (TOP OF STEERING COLUMN) STEERING WHEEL DOWNSHIFT BUTTON STEERING WHEEL ELECTRONICS STEERING WHEEL HEATER STEERING WHEEL UPSHIFT BUTTON SUPPLEMENTAL RESTRAINTS SYSTEM TEMP VEHICLE INTERIOR FUSE, RELAY MODULE

BATTERY SENSOR BATTERY TERMINAL PYROFUSE BLK WIRE BLU WIRE BLU/WHT WIRE BRN WIRE BRN/RED WIRE CAN B H CAN B L CAN C H CAN C L CENTRAL CONTROL MODULE CHARGING CIRCUIT CIRCUIT 50 RELAY COMPUTER DATA LINES COMPUTER DATA LINES SYSTEM ELECTRONIC IGNITION SWITCH CONTROL UNIT ENGINE COMPARTMENT FUSE, RELAY MODULE FLEX-E BM FLEX-E BP FUSE 73 FUSE 75 GRN WIRE GRN/WHT WIRE HOT W/ ENGINE COMPARTMENT TERMINAL 15 RELAY ENERGIZED LIN ME-SFI (ME) CONTROL UNIT NCA WIRE ON-BOARD ELECTRICAL SYSTEM BATTERY ORG/ WIRE PNK WIRE RED WIRE RED/WHT WIRE REL (+) REL GND SIG (1) SIG (2) START/STOP BUTTON STARTER STARTER, ALTERNATOR CABLE CONNECTOR STEERING COLUMN MODULE CONTROL UNIT STERN SYSTEM VIO/WHT WIRE VIO/YEL WIRE VOLTAGE DIP LIMITER WHT WIRE YEL/RED WIRE