Mercedes-Benz A-class W177 (2018-2023) (under front of center console) Wiring diagrams

AUGMENTED REALITY CAMERA (IF EQUIPPED) (TOP CENTER OF WINDSHIELD) BACKUP CAMERA CONTROL UNIT (IF EQUIPPED) (CENTER OF LIFTGATE) BLK WIRE BLK/WHT WIRE BLU WIRE BLU/WHT WIRE BRN WIRE CAN A H CAN A L CAN HMI H CAN HMI L HEAD UNIT (LOWER LEFT END OF DASH) HEAD UNIT/INSTRUMENT CLUSTER CONTROL UNIT HEAD-UP DISPLAY (IF EQUIPPED) (UPPER LEFT SIDE OF DASH) INSTRUMENT CLUSTER CONTROL UNIT LEFT FRONT REVERSIBLE EMERGENCY TENSIONING RETRACTOR NCA WIRE RIGHT FRONT REVERSIBLE EMERGENCY TENSIONING RETRACTOR SUPPLEMENTAL RESTRAINT SYSTEM CONTROL UNIT USER INTERFACE CAN (CAN HMI) POTENTIAL DISTRIBUTOR VIO WIRE VIO/WHT WIRE W/ PRE- SAFE

BLU WIRE BRAKE FLUID LEVEL SWITCH BRN WIRE BRN/GRN WIRE BRN/RED WIRE BRN/WHT WIRE CAN B H CAN B H STERN CAN B L CAN H H CAN H L CENTRAL CONTROL MODULE COMPUTER DATA LINES SYSTEM DCS (+) DCS GND DRIVER DOOR CONTROL UNIT DRIVER DOOR LOCK DRIVER SEAT BELT BUCKLE SWITCH ELECTRONIC STABILITY PROGRAM CONTROL UNIT ENGINE COMPARTMENT FUSE, RELAY MODULE EXTERIOR LIGHTS, ELECTRIC PARKING BRAKE SWITCH GROUP FUSE 112 FUSE 156 FUSE 21 FUSE 24 GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GRN/WHT WIRE GRN/YEL WIRE GRY/WHT WIRE HOT W/ BATTERY DISCONNECT SWITCH RELAY ENERGIZED LOCK UNLOCK MOT GND/(+) NCA WIRE OR/GRN WIRE ORG/GRN WIRE PNK/BLU WIRE PNK/VIO WIRE PNK/WHT WIRE RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RIGHT FRONT BRAKE WEAR SENSOR SIG SIG (1) SIG (2) SIG 3 SIG 4 SUPPLEMENTAL RESTRAINT SYSTEM CONTROL UNIT VEHICLE INTERIOR FUSE, RELAY MODULE W/ INCREASED THEFT PROTECTION WHT WIRE WHT/VIO WIRE YEL WIRE

BATTERY TERMINAL PYROFUSE BLK WIRE BLK/BLU WIRE BLU WIRE BRN WIRE BRN/VIO WIRE BRN/WHT WIRE BRN/YEL WIRE CAN H H CAN H L COMPUTER DATA LINES SYSTEM CRASH DRIVER SEAT BELT BUCKLE SWITCH FRONT PASSENGER SEAT BELT BUCKLE SWITCH GRN WIRE GRY WIRE GRY/WHT WIRE GRY/YEL WIRE LEFT ACTIVE ENGINE HOOD SQUIB LEFT WINDOW BAG SQUIB ME-SFI (ME) CONTROL UNIT NCA WIRE ORG/GRN WIRE ORG/VIO WIRE PNK/BLK WIRE PNK/YEL WIRE REFRIGERANT INERTING SQUIB RIGHT ACTIVE ENGINE HOOD SQUIB RIGHT REAR EMERGENCY TENSIONING RETRACTOR SQUIB RIGHT WINDOW BAG SQUIB SIG SIG GND SUPPLEMENTAL RESTRAINT SYSTEM CONTROL UNIT VIO WIRE VIO/YEL WIRE WHT WIRE WHT/VIO WIRE WHT/YEL WIRE

BLK WIRE BLK/GRY WIRE BLK/YEL WIRE BLU WIRE BLU/GRY WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/RED WIRE BRN/VIO WIRE BRN/WHT WIRE BRN/YEL WIRE CAN B H CAN B L CAN HMI H CAN HMI L CENTRAL CONTROL MODULE COMPUTER DATA COMPUTER DATA LINES SYSTEM CRASH DRIVER DOOR PRESSURE SENSOR FRONT PASSENGER DOOR PRESSURE SENSOR FRONT PASSENGER ETR (GUS) SQUIB FUSE 158 GRN WIRE GRN/GRY WIRE GRN/YEL WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/VIO WIRE GRY/YEL WIRE HOT AT ALL TIMES INSTRUMENT CLUSTER LEFT B-PILLAR BODY ACCELERATION LEFT FRONT BUMPER PEDESTRIAN PROTECTION SENSOR LEFT FRONTAL ACCELERATION SENSOR LEFT REAR DOOR PRESSURE SENSOR LEFT REAR SIDE BAG SQUIB LINES SYSTEM RED WIRE RED/BLU WIRE RED/YEL WIRE RIGHT B-PILLAR BODY ACCELERATION SENSOR RIGHT REAR DOOR PRESSURE SENSOR RIGHT REAR SIDE BAG SQUIB SIG SIG (L) SIG GND SIG R STERN SUPPLEMENTAL RESTRAINT SYSTEM CONTROL UNIT VEHICLE INTERIOR FUSE, RELAY MODULE VIO WIRE VIO/WHT WIRE WHT/VIO WIRE