Mercedes-Benz B-class W246 facelift (2014-2018) electronic stability program control unit Wiring diagrams

15 SIG ABS IND. BLK/BRN WIRE BLK/GRN WIRE BLK/RED WIRE BLS H BLS L BLU/GRN WIRE BLU/YEL WIRE BRAKE SYSTEM WARNING LAMP IND BRAKE VACUUM SENSOR BRN WIRE BRN/GRY WIRE BRN/RED WIRE BRN/WHT WIRE CAN B H CAN B L CAN E H CAN E L COMPUTER DATA LINES SYSTEM ELECTRONIC STABILITY PROGRAM CONTROL UNIT ENGINE COMPARTMENT FUSE, RELAY MODULE ESP WARNING LAMP IND ESPA/ASR OFF WARNING LAMP IND FUSE 204 FUSE 218 FUSE 230 FUSE 237 FUSE 88 GRN WIRE GRN/BRN WIRE GRN/WHT WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/RED WIRE HOT AT ALL TIMES HOT W/ CIRCUIT 15 RELAY ENERGIZED INSTRUMENT CLUSTER PARKING BRAKE IND. PEDAL ANGLE SENSOR (B-CLASS) RED/BLK WIRE RED/GRN WIRE RED/GRY WIRE RED/WHT WIRE RED/YEL WIRE SIG SSK START STOP LAMP SWITCH VEHICLE INTERIOR FUSE BOX WHT/BLK WIRE WHT/BLU WIRE WHT/GRY WIRE WHT/RED WIRE WHT/YEL WIRE YEL/GRN WIRE

ACCELERATE, SET SWITCH ACCELERATOR PEDAL SENSOR BLK/GRN WIRE BLK/YEL WIRE BLS H BLS L BLU WIRE BLU/GRN WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/WHT WIRE CAN C H CAN C L CAN E H CAN E L COMPUTER DATA LINES SYSTEM CRUISE CONTROL LEVER DECELERATE, SET SWITCH DISTRONIC CONTROL (IF EQUIPPED) DISTRONIC ELECTRONIC CONTROLLER UNIT DISTRONIC WARNING LAMP IND DOWNHILL SPEED REGULATION BUTTON DRIVETRAIN CONTROL UNIT DUAL CLUTCH TRANSMISSION FULLY INTEGRATED TRANSMISSION CONTROL CONTROLLER UNIT ELECTRONIC STABILITY PROGRAM CONTROL UNIT ENGINE COMPARTMENT FUSE, RELAY MODULE FUSE 203 FUSE 224 FUSE 32 GRN WIRE GRN/BLK WIRE GRN/BRN WIRE GRN/GRY WIRE GRN/WHT WIRE GRN/YEL WIRE GRY/BLK WIRE GRY/BRN WIRE HOT W/ CIRCUIT 15 RELAY ENERGIZED HOT W/ STARTER CIRCUIT 50 RELAY ENERGIZED INDICATOR SWITCH INSTRUMENT CLUSTER LEFT FRONT AXLE RPM SENSOR LEFT REAR AXLE RPM SENSOR LIN 1 NCA WIRE OFF SWITCH OFFROAD PROGRAM BUTTON ORG/BLU WIRE RED WIRE RED/BLK WIRE RED/GRN WIRE RED/WHT WIRE RELAY ENERGIZED RESUME FROM MEMORY SWITCH RIGHT FRONT AXLE RPM SENSOR RIGHT REAR AXLE RPM SENSOR SIG STEERING COLUMN MODULE CONTROL UNIT STOP LAMP SWITCH UPPER CONTROL PANEL CONTROL UNIT VEHICLE INTERIOR FUSE BOX WHT/BLK WIRE WHT/BLU WIRE WHT/GRY WIRE WHT/RED WIRE WHT/YEL WIRE

1/2 ACTIVE CURVE ILLUMINATION ACTUATOR MOTOR BLK/GRN WIRE BLK/RED WIRE BLK/VIO WIRE BLK/WHT WIRE BLK/YEL WIRE BLS H BLS L BLU/BLK WIRE BLU/BRN WIRE BLU/GRN WIRE BLU/RED WIRE BLU/WHT WIRE BRN WIRE CAN E H CAN E L CLA CLASS CLA CLASS, GLA CLASS COMBINATION SWITCH COMPUTER DATA LINES SYSTEM CORNERING ILLUMINATION ELECTRONIC STABILITY PROGRAM CONTROL UNIT ENGINE COMPARTMENT FUSE, RELAY MODULE EXTERIOR LIGHTS LED ACTUATION MODULE EXTERIOR LIGHTS SWITCH FRA-L FRA-R FRONT FOG LAMP SWITCH FUSE 229 FUSE 231 FUSE 237 FUSE 84 FUSE 89 GLA CLASS GRN WIRE GRN/RED WIRE GRN/WHT WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/RED WIRE HAZARD WARNING SYSTEM SWITCH HEADLAMP FLASHER/ HIGH BEAM SWITCH HOT AT ALL TIMES HOT W/ CIRCUIT 15 RELAY ENERGIZED ILLUMINATION SWITCH LEFT FRONT SIDE MARKER LAMP LIN 1 ORG/BLU WIRE PARKING LIGHT, STANDING LIGHT, DAYTIME RUNNING LIGHT PARKING LIGHT, STANDING LIGHT, HIGH BEAM, DAYTIME RUNNING LIGHT PL L (+) PL R (+) PLTFL L REAR FOG LIGHT SWITCH RED WIRE RED/WHT WIRE RED/YEL WIRE RIGHT FRONT LAMP UNIT RIGHT FRONT SIDE MARKER LAMP SIDE MARKER LAMP STANDING PARKING LAMPS STEERING COLUMN MODULE CONTROL UNIT STOP LAMP SWITCH (TOP OF BRAKE PEDAL ASSEMBLY) TURN SIGNAL LAMP TURN SIGNAL LAMPS SWITCH TURN SIGNAL LIGHT/ SIDE MARKER LIGHT UPLTFL L (+) UPLTFL R (+) UPPER CONTROL PANEL CONTROL UNIT VEHICLE INTERIOR FUSE BOX W/ XENON HEADLAMP W/ XENON HEADLAMP W/O XENON HEADLAMP W/O XENON HEADLAMP WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/GRY WIRE WHT/RED WIRE WHT/YEL WIRE YEL/WHT WIRE

BATTERY RELAY BLK WIRE BRN WIRE BRN/WHT WIRE CENTER STOP LAMP (GLA-CLASS, B-CLASS ELECTRIC DRIVE) ECO START/STOP FUNCTION ADDITIONAL ELECTRONIC STABILITY PROGRAM CONTROL UNIT FRONT PASSENGER SEAT FRONT PASSENGER SEAT CONTROL UNIT (CLA-CLASS, GLA-CLASS), GRN WIRE HEATED REAR WINDOW (CLA-CLASS) HEATED REAR WINDOW (GLA, B-CLASS) LUMBAR SUPPORT PNEUMATIC PUMP (CLA-CLASS, GLA-CLASS), STATIONARY HEATER RADIO REMOTE CONTROL RECEIVER TIRE PRESSURE MONITOR CONTROL UNIT TOP OF ENGINE)

ADAPTIVE DAMPING SYSTEM CONTROL UNIT BLU WIRE BLU/WHT WIRE BRN WIRE BRN/RED WIRE CAN B H CAN B L CAN V H CAN V L CENTER REAR OF LUGGAGE COMPT) COLLISION PREVENTION ASSIST CONTROLLER UNIT DISTRONIC ELECTRIC CONTROLLER UNIT DRIVETRAIN CONTROL UNIT ELECTRIC PARKING BRAKE CONTROL UNIT ELECTRONIC IGNITION SWITCH CONTROL UNIT ELECTRONIC STABILITY PROGRAM CONTROL UNIT GATEWAY FOR POWER TRAIN CONTROL UNIT GRN WIRE GRN/WHT WIRE LEFT FRONT REVERSIBLE EMERGENCY TENSIONING RETRACTOR LEFT REAR BUMPER INTELLIGENT RADAR SENSOR RIGHT FRONT REVERSIBLE EMERGENCY TENSIONING RETRACTOR RIGHT REAR BUMPER INTELLIGENT RADAR SENSOR STEERING COLUMN MODULE CONTROL UNIT SUPPLEMENTAL RESTRAINT SYSTEM CONTROL UNIT W/ DISTRONIC PLUS W/ DISTRONIC PLUS W/O ACTIVE PARK ASSIST W/ ACTIVE PARK ASSIST W/ PRE- SAFE W/O DISTRONIC PLUS

87 RELAY (DIAGRAM 1 OF 6) AC HOUSING, ATA (EDW)/ TOWING SENSOR/ INTERIOR MOTION SENSOR CONTROL UNIT BACKUP RELAY BLK WIRE BLK/BLU WIRE BLK/GRY WIRE BLK/RED WIRE BLK/VIO WIRE BLK/YEL WIRE BLU/GRN WIRE BLU/VIO WIRE BRAKE BOOSTER VACUUM PUMP SUPPLY RELAY BRN WIRE BRN/RED WIRE CHARGING SOCKET ELECTRICAL CONNECTOR CIRCUIT 15 RELAY CIRCUIT 15 RELAY (UNLATCHED) CONTROL UNIT) DIAGNOSTIC CONNECTOR DRIVETRAIN CONTROL UNIT ELECTRIC VEHICLE SOUND GENERATOR ELECTRONIC STABILITY PROGRAM CONTROL UNIT ENGINE COMPARTMENT FUSE, RELAY MODULE FANFARE HORN RELAY FM, AM, CL (ZV) ANTENNA AMPLIFIER FROM FRONT ELECTRICAL PREFUSE BOX (DIAGRAM 1 OF 6) FROM PARK PAWL ACTUATOR MOTOR CIRCUIT FUSE 101 FUSE 102 FUSE 103 FUSE 109 FUSE 110 FUSE 201 FUSE 202 FUSE 204 FUSE 221 FUSE 224 FUSE 225 FUSE 226 FUSE 227 FUSE 228 FUSE 229 FUSE 230 FUSE 231 FUSE 232 FUSE 236 FUSE 237 FUSE 79 FUSE 80 FUSE 81 FUSE 82 FUSE 83 FUSE 84 FUSE 85 FUSE 86 FUSE 87 FUSE 88 HEADLAMP CONTROL UNIT HEATED WINDSHIELD RELAY INSTRUMENT CLUSTER LEFT FRONT LAMP UNIT NCA WIRE ORG/BLU WIRE OVERHEAD CONTROL PANEL CONTROL UNIT PARK PAWL CONTROL UNIT CIRCUIT 87 RELAY POWER ELECTRONICS CONTROL UNIT POWER ELECTRONICS CONTROL UNIT, CHARGER CONTROL UNIT RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/GRY WIRE RED/ORG WIRE RED/VIO WIRE RED/WHT WIRE RED/YEL WIRE RIGHT FRONT LAMP UNIT SAM CONTROL UNIT STATIONARY HEATER UNIT TELEMATICS SERVICES COMMUNICATION MODULE, EMERGENCY CALL SYSTEM TO CIRCUIT TO ELECTRONIC IGNITION SWITCH CONTROL UNIT (DIAGRAM 5 OF 6) TO FUSE 234 (DIAGRAM 3 OF 6) UPPER CONTROL PANEL CONTROL UNIT VACUUM PUMP WINDSHIELD WIPER ON/OFF RELAY

ASHTRAY ILLUMINATION BLK WIRE BLK/GRN WIRE BLK/WHT WIRE BRN WIRE BRN/GRN WIRE CIGARETTE LIGHTER HEATING ELEMENT CIRCUIT 87 RELAY COMAND CONTROL UNIT COMAND FAN MOTOR DRIVE KIT CONTROL UNIT FOR IPHONE DRIVETRAIN CONTROL UNIT DUAL CLUTCH TRANSMISSION FULLY INTEGRATED CONTROL UNIT ELECTRIC REFRIGERANT COMPRESSOR ELECTRONIC STABILITY PROGRAM CONTROL UNIT ENGINE COMPARTMENT FUSE, RELAY MODULE FROM CIRCUIT 15 RELAY (DIAGRAM 2 OF 6) FROM FUSE 39 (DIAGRAM 1 OF 6) FROM FUSE 79 (DIAGRAM 2 OF 6) FROM VEHICLE INTERIOR FUSE BOX (DIAGRAM 1 OF 6) FRONT CIGAR LIGHTER W/ ASHTRAY ILLUMINATION FRONT PASSENGER SEAT CONTROL UNIT FRONT PASSENGER SEAT LUMBAR SUPPORT ADJUSTMENT CONTROL UNIT FUSE 100 FUSE 217 FUSE 218 FUSE 222 FUSE 234 FUSE 241 FUSE 40 FUSE 41 FUSE 42 FUSE 43 FUSE 44 FUSE 45 FUSE 46 FUSE 47 FUSE 48 FUSE 49 FUSE 69 FUSE 70 FUSE 71 FUSE 72 FUSE 97 GRY/BLU WIRE HEATED REAR WINDOW RELAY HIGH-VOLTAGE PTC HEATER LEFT FRONT REVERSIBLE EMERGENCY TENSIONING RETRACTOR LUGGAGE COMPARTMENT SOCKET MOBILE PHONE CONTACT PLATE N/A PANORAMIC SLIDING ROOF CONTROL MODULE REAR CENTER CONSOLE POWER OUTLET RED WIRE RED/BLK WIRE RED/BLU WIRE RED/BRN WIRE RED/GRN WIRE RED/PNK WIRE RED/WHT WIRE RESERVE FUSE 216 RESERVE FUSE 233 RESERVE FUSE 235 RIGHT FRONT REVERSIBLE EMERGENCY TENSIONING RETRACTOR SAM CONTROL UNIT TO CIRCUIT TO FUSE 99 (DIAGRAM 4 OF 6) TO HIGH-VOLTAGE POWER DISTRIBUTOR (DIAGRAM 6 OF 6) VEHICLE INTERIOR FUSE BOX (RIGHT FRONT FOOTWELL) VEHICLE INTERIOR POWER OUTLET W/ ASHTRAY PACKAGE/SMOKER PACKAGE W/O ASHTRAY PACKAGE/SMOKER PACKAGE W/ MEMORY W/ PRE- SAFE W/O MEMORY