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

ALTERNATOR BATTERY DISCONNECT SWITCH RELAY BATTERY SENSOR BLK WIRE BLU/WHT WIRE BRN WIRE BRN/RED WIRE CAN B H STERN CAN B L CAN C H CAN C L CAN HMI H CAN HMI L CENTRAL CONTROL MODULE COMPUTER DATA LINES SYSTEM ENGINE COMPARTMENT PREFUSE BOX FUSE 2 GRN/WHT WIRE INSTRUMENT CLUSTER CONTROL UNIT LIN ME-SFI (ME) CONTROL UNIT NCA WIRE ON-BOARD ELECTRICAL SYSTEM BATTERY RED WIRE RED/WHT WIRE STARTER BATTERY PREFUSE BOX STARTER, ALTERNATOR CABLE CONNECTOR STARTING CIRCUIT VIO WIRE VIO/WHT WIRE WHT WIRE

BLK WIRE BLU WIRE BLU/GRY WIRE BRN WIRE BRN/GRN WIRE BRN/RED WIRE CAN B H CAN B L COMPUTER DATA LINES SYSTEM DRIVER DOOR EXIT, WARNING LAMP FRONT PASSENGER DOOR CONTROL UNIT (IN FRONT PASSENGER FRONT DOOR) FRONT PASSENGER DOOR EXIT, WARNING LAMP GRN WIRE GRN/BLU WIRE GRN/GRY WIRE OVERHEAD CONTROL PANEL CONTROL UNIT (UNDER OVERHEAD CONTROL PANEL) REAR DOME LAMP RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/GRY WIRE RED/WHT WIRE RL (+) SIG SIG RL W/ SEAT MODEL VARIANT 3 W/ STYLE PACKAGE W/O LIGHT, VISION PACKAGE W/O SEAT MODEL VARIANT 3 WHT/ORG WIRE WHT/VIO WIRE YEL WIRE YEL/BLK WIRE YEL/BLU 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

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

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

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

BATTERY SENSOR BATTERY TERMINAL PYROFUSE BLK WIRE BLU WIRE BLU/WHT WIRE BRN WIRE BRN/RED WIRE CAN B H CAN B L CAN C H CAN C L CENTRAL CONTROL MODULE CHARGING CIRCUIT CIRCUIT 50 RELAY COMPUTER DATA LINES COMPUTER DATA LINES SYSTEM ELECTRONIC IGNITION SWITCH CONTROL UNIT ENGINE COMPARTMENT FUSE, RELAY MODULE FLEX-E BM FLEX-E BP FUSE 73 FUSE 75 GRN WIRE GRN/WHT WIRE HOT W/ ENGINE COMPARTMENT TERMINAL 15 RELAY ENERGIZED LIN ME-SFI (ME) CONTROL UNIT NCA WIRE ON-BOARD ELECTRICAL SYSTEM BATTERY ORG/ WIRE PNK WIRE RED WIRE RED/WHT WIRE REL (+) REL GND SIG (1) SIG (2) START/STOP BUTTON STARTER STARTER, ALTERNATOR CABLE CONNECTOR STEERING COLUMN MODULE CONTROL UNIT STERN SYSTEM VIO/WHT WIRE VIO/YEL WIRE VOLTAGE DIP LIMITER WHT WIRE YEL/RED WIRE

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