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

BLK WIRE BRN WIRE CENTER AIR VENT AMBIANCE ILLUMINATION CENTER CONSOLE CUP HOLDER AMBIANCE ILLUMINATION DRIVER SEAT HEAD RESTRAINT AMBIANCE ILLUMINATION GRN WIRE LEFT REAR FOOTWELL AMBIANCE ILLUMINATION LEFT REAR SEAT HEAD RESTRAINT AMBIANCE ILLUMINATION LOWER LEFT CENTER CONSOLE AMBIENT LIGHTING LOWER RIGHT CENTER CONSOLE AMBIENT LIGHTING NCA WIRE RED WIRE RED/BLK WIRE RED/GRN WIRE RED/GRY WIRE RED/WHT WIRE RIGHT CENTER AIR VENT AMBIANCE ILLUMINATION RIGHT REAR FOOTWELL AMBIANCE ILLUMINATION W/ SEAT MODEL VARIANT 3 W/O SEAT MODEL VARIANT 3 WHT/ORG WIRE WHT/VIO WIRE YEL WIRE YEL/BLK WIRE YEL/BRN WIRE YEL/ORG WIRE

BLK WIRE BLK/YEL WIRE BLU 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 REAR AXLE LEVEL SENSOR RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE RIGHT FRONT LAMP UNIT RIGHT FRONT LEVEL SENSOR RIGHT REAR LEVEL SENSOR 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 W/ MULTI- LINK AXLE W/ TORSION- BEAM AXLE W/O STEEL SUSPENSION 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

ALTERNATOR BATTERY DISCONNECT SWITCH RELAY BATTERY SENSOR BLK WIRE BLU WIRE BRN WIRE CENTRAL CONTROL MODULE DRIVETRAIN CONTROL UNIT DUAL CLUTCH TRANSMISSION FULLY INTEGRATED TRANSMISSION CONTROL ELECTROHYDRAULIC ELECTRICAL POWER STEERING CONTROL UNIT ENGINE COMPARTMENT FUSE, RELAY MODULE ENGINE COMPARTMENT PREFUSE BOX FAN MOTOR FINE PARTICLE SENSOR FROM ELECTRONIC IGNITION SWITCH CONTROL UNIT (DIAGRAM 7 OF 7) FUSE 1 FUSE 118 FUSE 12 FUSE 14 FUSE 2 FUSE 3 FUSE 40 FUSE 41 FUSE 42 FUSE 43 FUSE 44 FUSE 47 FUSE 48 FUSE 49 FUSE 52 FUSE 53 GRN WIRE LEFT FRONT LAMP UNIT ME-SFI (ME) CONTROL UNIT NCA WIRE ONBOARD ELECTRICAL SYSTEM BATTERY RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/GRY WIRE RED/VIO WIRE RED/WHT WIRE RED/YEL WIRE RIGHT FRONT LAMP UNIT SHORT, LONG-RANGE RADAR SENSOR STARTER, ALTERNATOR CABLE CONNECTOR STATIONARY HEATER UNIT TO BACKUP RELAY (DIAGRAM 2 OF 7) TO VEHICLE INTERIOR FUSE, RELAY MODULE (DIAGRAM 4 OF 7) VOLTAGE DIP LIMITER W/ DYNAMIC LED HEADLAMPS W/ STATIC LED HEADLAMPS WIPER MOTOR

BACKUP CAMERA CONTROL UNIT CENTRAL CONTROL MODULE DRIVER DOOR CONTROL UNIT FROM FUSE 149 (DIAGRAM 5 OF 7) FRONT CENTER CONSOLE USB CONNECTOR FRONT PASSENGER DOOR CONTROL UNIT FUEL PUMP CONTROL UNIT FUSE 150 FUSE 152 FUSE 154 FUSE 156 FUSE 157 FUSE 158 FUSE 159 FUSE 160 FUSE 161 FUSE 162 FUSE 163 FUSE 164 FUSE 165 FUSE 167 FUSE 168 FUSE 169 FUSE 170 FUSE 171 HAND MOTION SENSOR HEAD UNIT HEAD UNIT/ INSTRUMENT CLUSTER CONTROL UNIT LEFT REAR DOOR CONTROL UNIT MONO MULTI-FUNCTION CAMERA MULTIMEDIA CONNECTION UNIT N/A NCA WIRE PARKING SYSTEM CONTROL UNIT RAIN/LIGHT SENSOR W/ ADDITIONAL FUNCTIONS REAR SWITCHING MODULE RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/GRY WIRE RED/VIO WIRE RED/WHT WIRE RIGHT REAR DOOR CONTROL UNIT STEERING COLUMN MODULE CONTROL UNIT STEREO MULTI-FUNCTION CAMERA TIRE PRESSURE MONITOR CONTROL UNIT TO ELECTRIC STEERING LOCK CONTROL UNIT (DIAGRAM 7 OF 7) W/ DISTRONIC DISTANCE-PILOT W/ TIRE PRESSURE MONITOR W/ WIRELESS MOBILE PHONE CHARGING W/O ACTIVE PARKING ASSIST W/ PARKTRONIC W/O ACTIVE PARKING ASSIST, PARKTRONIC W/O DISTRONIC DISTANCE-PILOT W/O TIRE PRESSURE MONITOR W/O WIRELESS MOBILE PHONE CHARGING

ADAPTIVE DAMPING SYSTEM CONTROL UNIT ALL-WHEEL DRIVE CONTROL UNIT AMBIANCE ILLUMINATION CONTROL UNIT AUGMENTED REALITY CAMERA CELLULAR TELEPHONE SYSTEM ANTENNA AMPLIFIER/ COMPENSATOR CLIMATE CONTROL OPERATING UNIT DRIVE UNIT CONTROL UNIT DRIVER MULTICONTOUR SEAT CONTROL UNIT DRIVER SEAT CONTROL UNIT DRIVER SEAT LUMBAR SUPPORT ELECTROPNEUMATIC CONTROLLER UNIT FROM FUSE 117 (DIAGRAM 4 OF 7) FRONT MOBILE PHONE CRADLE CONTROL UNIT FRONT PASSENGER MULTICONTOUR SEAT CONTROL UNIT FRONT PASSENGER SEAT CONTROL UNIT FRONT PASSENGER SEAT LUMBAR SUPPORT ADJUSTMENT CONTROL UNIT FRONT SEAT HEATER/ SEAT VENTILATION CONTROL UNIT FUSE 113 FUSE 114 FUSE 115 FUSE 116 FUSE 118 FUSE 119 FUSE 133 FUSE 136 FUSE 137 FUSE 138 FUSE 139 FUSE 140 FUSE 141 FUSE 142 FUSE 143 FUSE 144 FUSE 145 FUSE 146 FUSE 147 FUSE 148 FUSE 149 HEAD UNIT/ INSTRUMENT CLUSTER DISPLAY CLUSTER HEAD-UP DISPLAY LEFT FRONT REVERSIBLE EMERGENCY TENSIONING RETRACTOR N/A NCA WIRE OVERHEAD CONTROL PANEL CONTROL UNIT PANORAMIC SLIDING ROOF CONTROL UNIT RED WIRE RED/BLK WIRE RED/GRN WIRE RED/GRY WIRE RED/VIO WIRE RED/WHT WIRE RED/YEL WIRE RIGHT FRONT REVERSIBLE EMERGENCY TENSIONING RETRACTOR TO FUSE 150 (DIAGRAM 3 OF 7) TOUCHPAD W/ HEAD UP DISPLAY W/ MEMORY W/ MULTICONTOUR SEATS W/ WIRELESS MOBILE PHONE CHARGING W/O HEAD-UP DISPLAY W/O MEMORY W/O MULTICONTOUR SEATS W/O WIRELESS MOBILE PHONE CHARGING

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

BLK/BLU WIRE BLK/YEL WIRE BRN WIRE BRN/GRY WIRE BRN/RED WIRE BRN/YEL WIRE CAN B H CAN B L STERN CAN LR H CAN LR L COMPUTER DATA LINES SYSTEM ENGINE COMPARTMENT FUSE, RELAY MODULE FLUID LEVEL FUSE 169 FUSE 21 FUSE 44 HOT W/ BATTERY DISCONNECT SWITCH RELAY ENERGIZED INDICATOR SWITCH MOT GND/(+) NCA WIRE RAIN/LIGHT SENSOR W/ ADDITIONAL FUNCTIONS RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE SAM CONTROL UNIT SEDAN SIG SIG RBA-2 SPRAY NOZZLE HOSE HEATER (W/ HEATED WINDSHIELD WASHER SYSTEM) STEERING COLUMN MODULE CONTROL UNIT TAILGATE WIPER MOTOR (CENTER OF LIFTGATE) VEHICLE INTERIOR FUSE, RELAY MODULE WINDSHIELD WASHER WINDSHIELD WASHER SYSTEM PUMP WIPER MOTOR