Mercedes-Benz A-class W177 (2018-2023) blu/wht Wiring diagrams

BLK/RED WIRE BLU WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE COMPUTER DATA LINES SYSTEM COOLANT TEMPERATURE SENSOR COOLANT THERMOSTAT HEATING ELEMENT DRIVETRAIN CONTROL UNIT ENGINE COMPARTMENT FUSE, RELAY MODULE ENGINE COMPARTMENT PREFUSE BOX FAN MOTOR (BEHIND RADIATOR) FINE PARTICLE SENSOR FUSE 103 FUSE 118 FUSE 14 FUSE 143 FUSE 166 FUSE 27 FUSE 41 FUSE 53 FUSE 54 GRN WIRE GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE GRY/BLK WIRE GRY/YEL WIRE HOT AT ALL TIMES HOT W/ HOT W/ BATTERY DISCONNECT SWITCH RELAY ENERGIZED ME-SFI (ME) CONTROL UNIT NCA WIRE POWER SUPPLY POTENTIAL DISTRIBUTOR 3 RED WIRE RED/BLU WIRE RED/GRN WIRE RED/VIO WIRE RELAY ENERGIZED SIG SIG GND VEHICLE INTERIOR FUSE, RELAY MODULE YEL/GRN WIRE

BLK/RED WIRE BLU WIRE BLU/WHT WIRE BRN WIRE BRN/GRY WIRE CENTRAL AIR DISTRIBUTION ACTUATOR MOTOR CLIMATE CONTROL OPERATING UNIT FRESH AIR/ RECIRCULATION FLAP ACTUATOR MOTOR GRN WIRE GRN/VIO WIRE GRY/BLK WIRE LEFT BLEND AIR FLAP ACTUATOR NCA WIRE RED WIRE RED/GRN WIRE REFRIGERANT COMPRESSOR REFRIGERANT COMPRESSOR W/ MAGNETIC CLUTCH RIGHT BLEND AIR FLAP ACTUATOR RIGHT BLENDING AIR FLAP ACTUATOR SIG STATIONARY HEATER FUEL PUMP STATIONARY HEATER SWITCHOVER VALVE STATIONARY HEATER UNIT W/ AIR CONDITIONING W/ REFRIGERANT COMPRESSOR MAGNETIC CLUTCH W/O AIR CONDITIONING W/O REFRIGERANT COMPRESSOR MAGNETIC CLUTCH

BLU/WHT WIRE BRN WIRE BRN/RED WIRE BRN/WHT WIRE CAN B H CAN B L COMPUTER DATA LINES SYSTEM DRIVER MULTICONTOUR SEAT CONTROL UNIT DRIVER SEAT LUMBAR SUPPORT PNEUMATIC PUMP FRONT PASSENGER MULTICONTOUR SEAT CONTROL UNIT FRONT PASSENGER SEAT LUMBAR SUPPORT PNEUMATIC PUMP FUSE 116 HOT W/ BATTERY DISCONNECT SWITCH RELAY ENERGIZED RED WIRE SIG VEHICLE INTERIOR FUSE, RELAY MODULE

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

ACTIVE DISTANCE ASSIST DISTRONIC ELECTRIC CONTROLLER UNIT ADAPTIVE DAMPING SYSTEM CONTROL UNIT ALL-WHEEL DRIVE CONTROL UNIT BLK WIRE BLK/WHT WIRE BLU WIRE BLU/WHT WIRE BRN WIRE BRN/RED WIRE CAN PER H CAN PER L FLEX-E BM FLEX-E BP GRN WIRE GRN/WHT WIRE INTELLIGENT DRIVE CONTROL UNIT PNK WIRE RIGHT FRONT LAMP UNIT W/ DISTRONIC DISTANCE-PILOT W/ STEEL SUSPENSION W/ ADJUSTABLE DAMPING W/O DISTRONIC DISTANCE-PILOT W/O STEEL SUSPENSION W/ ADJUSTABLE DAMPING

BLK WIRE BLK/WHT WIRE BLU WIRE BLU/WHT WIRE BRN WIRE BRN/RED WIRE CAN C H CAN C L CAN PER H CAN PER L DRIVETRAIN CONTROL UNIT (UNDER CENTER OF DASH) FLEX-E BM FLEX-E BP FUEL PUMP CONTROL UNIT (OUTER CENTER REAR UNDERBODY) GRN WIRE GRN/WHT WIRE ME-SFI (ME) CONTROL UNIT (LEFT FRONT OF ENGINE COMPT) PARKING SYSTEM CONTROL UNIT (IF EQUIPPED) (UNDER DRIVER SEAT) PNK WIRE SOUND SYSTEM AMPLIFIER CONTROL UNIT STEREO MULTI-FUNCTION CAMERA W/ ACTIVE DISTANCE ASSIST DISTRONIC, COLLISION PREVENTION ASSIST W/ ACTIVE PARKING ASSIST W/ PARKTRONIC W/ DISTRONIC DISTANCE-PILOT W/ SOUND SYSTEM W/O ACTIVE PARKING ASSIST W/ PARKTRONIC W/O DISTRONIC DISTANCE-PILOT W/O SOUND SYSTEM WHT WIRE

BLU/WHT WIRE BRN WIRE BRN/WHT WIRE DRIVER SEAT LUMBAR SUPPORT ADJUSTMENT BUTTON DRIVER SEAT LUMBAR SUPPORT ELECTROPNEUMATIC CONTROLLER UNIT DRIVER SEAT LUMBAR SUPPORT PNEUMATIC PUMP FRONT PASSENGER SEAT LUMBAR SUPPORT ADJUSTMENT BUTTON FRONT PASSENGER SEAT LUMBAR SUPPORT ELECTROPNEUMATIC CONTROLLER UNIT FRONT PASSENGER SEAT LUMBAR SUPPORT PNEUMATIC PUMP FUSE 116 HOT W/ BATTERY DISCONNECT SWITCH RELAY ENERGIZED PUMP RED WIRE SIG GND VEHICLE INTERIOR FUSE, RELAY MODULE

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