Mercedes-Benz A-class W177 (2018-2023) can hmi h Wiring diagrams

AUGMENTED REALITY CAMERA BRN WIRE CAN HMI H CAN HMI L COMPUTER DATA LINES SYSTEM FUSE 148 HEAD UNIT HOT W/ BATTERY DISCONNECT SWITCH RELAY ENERGIZED HSVL NCA WIRE RED/BLK WIRE SHD SPV/AR VEHICLE INTERIOR FUSE, RELAY MODULE VIO WIRE VIO/WHT 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

AUDIO H AUDIO L+ AUGMENTED REALITY CAMERA BACKUP CAMERA CONTROL UNIT BLK WIRE BLK/BLU WIRE BLK/WHT WIRE BLU WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE CAN A H CAN A L CAN HMI H CAN HMI L CAN-D H CAN-D L CARSHARING CONTROL UNIT COMPUTER DATA LINES SYSTEM DRIVER HANDS-FREE SYSTEM MICROPHONE FRONT PASSENGER HANDS-FREE SYSTEM MICROPHONE FUSE 152 FUSE 166 GPS GPS ANTENNA GRN WIRE GRN/PNK WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/WHT WIRE HEAD UNIT (LOWER LEFT END OF DASH) HOT W/ BATTERY DISCONNECT SWITCH RELAY ENERGIZED HSVL LEFT A-PILLAR TWEETER LEFT FRONT DOOR WOOFER/MIDRANGE SPEAKER LEFT REAR DOOR TWEETER LEFT REAR DOOR WOOFER/MIDRANGE SPEAKER MIC H MIC-L NCA WIRE PARKING SYSTEM CONTROL UNIT RED WIRE RED/GRN WIRE RED/GRY WIRE SHD SHD GNSS SHD MM-BOX SHD RVC SHD SPV/AR USB DATA H USB DATA L USB RUI H USB RUI L VEHICLE INTERIOR FUSE, RELAY MODULE VIO WIRE VIO/WHT WIRE W/ ACTIVE PARKING ASSIST W/ PARKTRONIC W/ HERMES LTE W/O ACTIVE PARKING ASSIST W/ PARKTRONIC W/O HERMES LTE W/O SOUND SYSTEM WAKE-UP WHT WIRE

BLK WIRE BLK/WHT WIRE BLK/YEL WIRE BLU/BLK WIRE BLU/BRN WIRE BLU/GRN WIRE BRN WIRE BRN/RED WIRE CAN B H STERN CAN B L CAN H H CAN H L CAN HMI H CAN HMI L CAN LR H CAN LR L COMPUTER DATA LINES SYSTEM DTRL ELECTRONIC STABILITY PROGRAM CONTROL UNIT ENGINE COMPARTMENT FUSE, RELAY MODULE EXTERIOR LIGHTS, ELECTRIC PARKING BRAKE SWITCH GROUP FUSE 169 FUSE 64 GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GRN/WHT WIRE GRN/YEL WIRE GRY/BLU WIRE GRY/ORG WIRE GRY/WHT WIRE HB (+) HB (+) 15 HOT W/ BATTERY DISCONNECT SWITCH RELAY ENERGIZED HOT W/ ENGINE COMPARTMENT TERMINAL 15 RELAY ENERGIZED INSTRUMENT CLUSTER CONTROL UNIT LB (+) LEFT FRONT LAMP UNIT LEV (+) LIN NCA WIRE PNK WIRE PNK/RED WIRE RAIN/LIGHT SENSOR W/ ADDITIONAL FUNCTIONS RED/WHT WIRE RIGHT FRONT LAMP UNIT SAM CONTROL UNIT SIG SIG (1) SIG (2) SIG 3 SIG 4 SML STEERING COLUMN MODULE CONTROL UNIT TSI L (+) 31 TSI R (+) TSI R (+) 31 TSI-L (+) VEHICLE INTERIOR FUSE, RELAY MODULE VIO WIRE VIO/WHT WIRE WHT WIRE

BLK WIRE BLK/YEL WIRE BLU/BRN WIRE BRN WIRE BRN/RED WIRE CAN B H STERN CAN B L CAN H H CAN H L CAN HMI H CAN HMI L CAN LR H CAN LR L CAN PER H CAN PER L COMPUTER DATA LINES SYSTEM ELECTRONIC STABILITY PROGRAM CONTROL UNIT ENGINE COMPARTMENT FUSE, RELAY MODULE EXTERIOR LIGHTS, ELECTRIC PARKING BRAKE SWITCH GROUP FUSE 169 FUSE 22 FUSE 48 GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GRN/WHT WIRE GRN/YEL WIRE GRY/BLU WIRE GRY/WHT WIRE HOT W/ BATTERY DISCONNECT SWITCH RELAY ENERGIZED INSTRUMENT CLUSTER CONTROL UNIT LEFT FRONT LAMP UNIT LIN NCA WIRE PNK WIRE PNK/RED WIRE RAIN/LIGHT SENSOR W/ ADDITIONAL FUNCTIONS RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE RIGHT FRONT LAMP UNIT SAM CONTROL UNIT (RIGHT FRONT FOOTWELL) SIG SIG (1) SIG (2) SIG 3 SIG 4 STEERING COLUMN MODULE CONTROL UNIT VEHICLE INTERIOR FUSE, RELAY MODULE VIO WIRE VIO/WHT WIRE WHT WIRE

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

ACTIVE BRAKE ASSIST CONTROLLER UNIT (BEHIND RIGHT SIDE OF FRONT BUMPER) BLK WIRE BLK/WHT WIRE BLU WIRE BLU/WHT WIRE BRN WIRE BRN/RED WIRE CAN B L CAN H H CAN H L CAN HMI H CAN HMI L CAN PER H CAN PER L DRIVE UNIT CONTROL UNIT (UNDER TRUNK FLOOR) ELECTRICAL POWER STEERING CONTROL UNIT ELECTRONIC IGNITION SWITCH CONTROL UNIT ELECTRONIC STABILITY PROGRAM CONTROL UNIT FLEX E BM CAN-B H FLEX E BM PNK FLEX E BP PNK FLEX E BP WIRE FLEX-E BM FLEX-E BP FLEX-E BP PNK FLEX-E BM WIRE GRN WIRE GRN/WHT WIRE GRY/WHT WIRE LEFT FRONT LAMP UNIT LEFT OUTER REAR INTEGRATED RADAR SENSOR MONO MULTI-FUNCTION CAMERA (TOP CENTER OF WINDSHIELD) PERIPHERALS CAN (CAN PER) POTENTIAL DISTRIBUTOR ELECTRICAL CONNECTOR PNK FLEX-E BM WIRE PNK FLEX-E BP WIRE PNK WIRE PNK/GRN WIRE RIGHT OUTER REAR INTEGRATED RADAR SENSOR SHORT, LONG-RANGE RADAR SENSOR (IN CENTER OF FRONT BUMPER) STEERING COLUMN MODULE CONTROL UNIT SUPPLEMENTAL RESTRAINT SYSTEM CONTROL UNIT (UNDER FRONT OF CENTER CONSOLE) VIO WIRE VIO/WHT WIRE W/ ACTIVE DISTANCE ASSIST DISTRONIC W/ ACTIVE DISTANCE ASSIST DISTRONIC, COLLISION PREVENTION ASSIST W/ COLLISION PREVENTION ASSIST W/ DISTRONIC DISTANCE-PILOT WHT WIRE

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

BLK WIRE BLK/ORG WIRE BLU 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 CENTER CONSOLE KEYLESS GO ANTENNA COMPUTER DATA LINES SYSTEM DRIVER DOOR KEYLESS-GO DOOR HANDLE ELECTRONIC IGNITION SWITCH CONTROL UNIT FM 1, AM, CL (ZV), KEYLESS GO ANTENNA AMPLIFIER FRONT PASSENGER DOOR KEYLESS-GO DOOR HANDLE FUSE 132 GRY/BLK WIRE GRY/YEL WIRE HOT AT ALL TIMES INSTRUMENT CLUSTER CONTROL UNIT KAPA LEFT REAR KEYLESS GO DOOR HANDLE LEFT UNDER FLOOR KEYLESS GO ANTENNA LF 1 LF 2 LF MID LOAD COMPARTMENT KEYLESS-GO ANTENNA RED WIRE RED/YEL WIRE RIGHT REAR KEYLESS GO DOOR HANDLE RIGHT UNDER FLOOR KEYLESS GO ANTENNA VEHICLE INTERIOR FUSE, RELAY MODULE VIO WIRE VIO/WHT WIRE WHT WIRE YEL/BRN WIRE YEL/GRN WIRE

BACKUP CAMERA CONTROL UNIT (CENTER OF LIFTGATE) BLU/BLK WIRE BLU/GRN WIRE BLU/GRY WIRE BRN WIRE BRN/RED WIRE CAN B H STERN CAN B L CAN HMI H CAN HMI L CENTRAL CONTROL MODULE COMPUTER DATA LINES SYSTEM ENGINE COMPARTMENT FUSE, RELAY MODULE FUSE 171 FUSE 21 HEAD UNIT HEAD UNIT/ INSTRUMENT CLUSTER CONTROL UNIT HOT W/ BATTERY DISCONNECT SWITCH RELAY ENERGIZED MOT GND/(+) NCA WIRE REAR CAMERA COVER MOTOR RED WIRE RED/WHT WIRE SHIELD SHIELD DISP/RVC SHIELD RVC SIG VEHICLE INTERIOR FUSE, RELAY MODULE VIO WIRE VIO/WHT WIRE W/ CONNECT 20 W/ CONNECT 5