Mercedes-Benz A-class W177 (2018-2023) (under overhead control panel) Wiring diagrams

ALARM SIREN BLK WIRE BLU WIRE BRN WIRE BRN/BLK WIRE BRN/GRN WIRE BRN/RED WIRE CAN B H CAN B L CAN HMI H CAN HMI L COMPUTER DATA COMPUTER DATA LINES SYSTEM CORNER OF ROOF) DCS (+) DCS GND DRIVER DOOR EXIT, WARNING LAMP FRONT PASSENGER DOOR LOCK FRONT RIGHT - FUSE 129 FUSE 140 FUSE 161 FUSE 163 GRN WIRE GRY/RED WIRE HOT AT ALL TIMES INSTRUMENT CLUSTER CONTROL UNIT LEFT REAR DOOR CENTRAL LOCKING INSIDE DOOR HANDLE SWITCH LEFT REAR DOOR CONTROL UNIT LEFT REAR DOOR HANDLE AMBIANCE ILLUMINATION LEFT REAR DOOR HANDLE ILLUMINATION LEFT REAR DOOR LOCK LEFT REAR DOOR STOWAGE COMPARTMENT ILLUMINATION LIN LINES SYSTEM LOCK UNLOCK MOT GND/(+) OVERHEAD CONTROL PANEL CONTROL UNIT PNK WIRE PNK/BLU WIRE PNK/GRN WIRE PNK/VIO WIRE PNK/WHT WIRE RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/WHT WIRE SIG GND VEHICLE INTERIOR FUSE, RELAY MODULE VIO WIRE VIO/WHT WIRE VISION PACKAGE W/ INCREASED THEFT PROTECTION W/ LIGHTS, WHEELWELL) WHT/VIO WIRE YEL WIRE YEL/GRN WIRE

ALARM SIREN BLK WIRE BLU WIRE BRN WIRE BRN/BLK WIRE BRN/GRN WIRE BRN/RED WIRE CAN B H CAN B L CAN HMI H CAN HMI L COMPUTER DATA COMPUTER DATA LINES SYSTEM CORNER OF ROOF) DCS (+) DCS GND DRIVER DOOR EXIT, WARNING LAMP FRONT PASSENGER DOOR LOCK FRONT RIGHT - FUSE 129 FUSE 140 FUSE 161 FUSE 163 GRN WIRE GRY/RED WIRE HOT AT ALL TIMES INSTRUMENT CLUSTER CONTROL UNIT LEFT REAR DOOR CENTRAL LOCKING INSIDE DOOR HANDLE SWITCH LEFT REAR DOOR CONTROL UNIT LEFT REAR DOOR HANDLE AMBIANCE ILLUMINATION LEFT REAR DOOR HANDLE ILLUMINATION LEFT REAR DOOR LOCK LEFT REAR DOOR STOWAGE COMPARTMENT ILLUMINATION LIN LINES SYSTEM LOCK UNLOCK MOT GND/(+) OVERHEAD CONTROL PANEL CONTROL UNIT PNK WIRE PNK/BLU WIRE PNK/GRN WIRE PNK/VIO WIRE PNK/WHT WIRE RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/WHT WIRE SIG GND VEHICLE INTERIOR FUSE, RELAY MODULE VIO WIRE VIO/WHT WIRE VISION PACKAGE W/ INCREASED THEFT PROTECTION W/ LIGHTS, WHEELWELL) WHT/VIO WIRE YEL WIRE YEL/GRN WIRE

AMBIANCE ILLUMINATION CONTROL UNIT BLK WIRE BLK/WHT WIRE BRN WIRE BRN/RED WIRE CAN A H CAN A L CAN B H CAN B H STERN CAN B L CAN I H CAN I L CENTRAL CONTROL MODULE CONTROL UNIT OF NOX SENSOR UPSTREAM OF SCR CATALYTIC CONVERTER DRIVER DOOR CONTROL UNIT DRIVETRAIN SENSOR CAN (CAN I) POTENTIAL DISTRIBUTOR FRONT PASSENGER DOOR CONTROL UNIT FRONT PASSENGER MULTICONTOUR SEAT CONTROL UNIT FRONT PASSENGER SEAT CONTROL UNIT (W/O MEMORY) (UNDER RIGHT FRONT SEAT) HAND MOTION SENSOR (W/ FRONT GESTURE CONTROL) HEAD UNIT/INSTRUMENT CLUSTER DISPLAY CLUSTER NCA WIRE NOX SENSOR CONTROL UNIT DOWNSTREAM OF SCR CATALYTIC CONVERTER OVERHEAD CONTROL PANEL CONTROL UNIT PANORAMIC SLIDING ROOF CONTROL UNIT PNK WIRE PNK/WHT WIRE SOOT PARTICULATE SENSOR CONTROL UNIT TELEMATICS CAN (CAN A) POTENTIAL DISTRIBUTOR TOUCHPAD (W/ TOUCHPAD ONLY) TRAILER RECOGNITION CONTROL UNIT YEL WIRE

ALARM SIREN BLU/GRY WIRE BRN WIRE BRN/BLK WIRE BRN/GRN WIRE BRN/RED WIRE CAN B H CAN B L CENTRAL CONTROL MODULE COMPUTER DATA LINES SYSTEM FUSE 129 FUSE 140 GRN WIRE GRN/BLU WIRE GRN/GRY WIRE HOT AT ALL TIMES HOT W/ BATTERY DISCONNECT SWITCH RELAY ENERGIZED INSIDE REAR VIEW MIRROR LEFT FRONT MIRROR LAMP SWITCH LEFT REAR INTERIOR/ READING LAMP LEFT SUN VISOR MIRROR LAMP NCA WIRE OVERHEAD CONTROL PANEL CONTROL UNIT REAR DOME LAMP REAR WINDOW GLASS BREAKAGE SENSOR RED WIRE RED/BLU WIRE RED/GRN WIRE RED/GRY WIRE RED/WHT WIRE RIGHT FRONT MIRROR LAMP SWITCH RIGHT REAR INTERIOR/ READING LAMP RIGHT SUN VISOR MIRROR LAMP RL (+) SIG SIG RL VEHICLE INTERIOR FUSE, RELAY MODULE W/ LIGHT, VISION W/O LIGHT, VISION WHT/BLU WIRE WHT/BRN WIRE YEL WIRE YEL/BLU WIRE YEL/GRN WIRE

BLK/BLU WIRE BLK/YEL WIRE BRN WIRE BRN/GRY WIRE BRN/RED WIRE CAN B H CAN B H STERN CAN B L CENTRAL CONTROL MODULE COMPUTER DATA LINES SYSTEM DRIVER DOOR CONTROL UNIT DRIVER SIDE OUTSIDE MIRROR EC (+) EC GND EC GND EC+ FRONT PASSENGER DOOR CONTROL UNIT FUSE 140 FUSE 156 FUSE 169 GRN WIRE HOT W/ BATTERY DISCONNECT SWITCH RELAY ENERGIZED INSIDE REAR VIEW MIRROR LIN OVERHEAD CONTROL PANEL CONTROL UNIT PASSENGER SIDE OUTSIDE MIRROR POWER DISTRIBUTION SYSTEM RAIN/LIGHT SENSOR W/ ADDITIONAL FUNCTIONS RED WIRE RED/GRN WIRE RED/GRY WIRE RED/WHT WIRE VEHICLE INTERIOR FUSE, RELAY MODULE

BRN WIRE BRN/RED WIRE CAN B H CAN B L COMPUTER DATA LINES SYSTEM FUSE 113 HOT AT ALL TIMES MOT GND/(+) MOT GND/(+) SENS 2 NCA WIRE OVERHEAD CONTROL PANEL CONTROL UNIT PANORAMIC SLIDING ROOF CONTROL UNIT PANORAMIC SLIDING ROOF DRIVE UNIT PANORAMIC SLIDING ROOF ROLLER SUN BLIND DRIVE UNIT RED WIRE SENS (+) SENS GND SENS 1 SENS 2 VEHICLE INTERIOR FUSE, RELAY MODULE