Power distribution circuit for Mercedes-Benz B-class W246 facelift (2014-2018)

AMPLIFIER CONTROL UNIT AUDIO COMAND CONTROL PANEL AUDIO/ COMAND DISPLAY AUTOMATIC AIR CONDITIONING CONTROL, OPERATING UNIT BATTERY MANAGEMENT SYSTEM BATTERY SENSOR BLK WIRE BLU/WHT WIRE BRN WIRE CONTROL UNIT) DRIVER SEAT CONTROL UNIT DRIVER SEAT LUMBAR SUPPORT ADJUSTMENT CONTROL UNIT ECO START/ STOP FUNCTION ADDITIONAL BATTERY RELAY ELECTRIC PARKING BRAKE CONTROL UNIT ELECTRICAL POWER STEERING CONTROL UNIT FAN MOTOR FRONT PASSENGER SEAT CONTROL UNIT FUSE 1 FUSE 2 FUSE 21 FUSE 22 FUSE 27 FUSE 3 FUSE 32 FUSE 33 FUSE 34 FUSE 36 FUSE 37 FUSE 38 FUSE 39 FUSE 4 FUSE 5 FUSE 54 FUSE 55 FUSE 56 FUSE 57 FUSE 58 FUSE 59 FUSE 6 FUSE 61 FUSE 62 FUSE 63 FUSE 7 FUSE 73 FUSE 74 FUSE 75 FUSE 76 FUSE 77 FUSE 8 FUSE 98 GATEWAY FOR POWERTRAIN CONTROL UNIT GRN/BRN WIRE GRN/RED WIRE KEYLESS-GO CONTROL UNIT N/A NCA WIRE ON-BOARD ELECTRICAL SYSTEM BATTERY OVERHEAD CONTROL PANEL CONTROL UNIT PARK PAWL ACTUATOR MOTOR CIRCUIT 87 RELAY PARK PAWL CONTROL UNIT RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/GRY WIRE RED/VIO WIRE RED/WHT WIRE RED/YEL WIRE SAM CONTROL UNIT SOUND SYSTEM SPECIAL-PURPOSE VEHICLE MULTI-FUNCTION CONTROL UNIT STEERING COLUMN MODULE CONTROL UNIT SUPPLEMENTAL RESTRAINT SYSTEM TO DC/DC CONVERTER CONTROL UNIT (DIAGRAM 6 OF 6) TO ENGINE COMPARTMENT FUSE, RELAY MODULE (DIAGRAM 2 OF 6) TO ENGINE COMPARTMENT FUSE, RELAY MODULE (DIAGRAM 3 OF 6) TO FUSE 109 (DIAGRAM 2 OF 6) TO FUSE 47 (DIAGRAM 3 OF 6) TO FUSE 60 (DIAGRAM 5 OF 6) TRAILER RECOGNITION CONTROL UNIT UHI VEHICLE INTERIOR FUSE BOX VIO/RED WIRE W/ MEMORY WHT/BRN WIRE WHT/RED WIRE

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

BACKUP CAMERA BATTERY MANAGEMENT SYSTEM BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/VIO WIRE BLK/WHT WIRE BLK/YEL WIRE BRN WIRE CIRCUIT 15 RELAY CONTROL UNIT (IF EQUIPPED) CONTROL UNIT) ELECTRIC PARKING BRAKE CONTROL UNIT EXTERIOR LIGHTS SWITCH FOOTWEEL ILLUMINATION SWITCH FROM CIRCUIT FROM FUSE 97 (DIAGRAM 3 OF 6) FROM HEATED REAR WINDOW RELAY (DIAGRAM 3 OF 6) FRONT PASSENGER SEAT OCCUPIED RECOGNITION, ACSR FUSE 104 FUSE 105 FUSE 106 FUSE 107 FUSE 28 FUSE 29 FUSE 30 FUSE 31 FUSE 64 FUSE 65 FUSE 66 FUSE 67 FUSE 68 FUSE 89 FUSE 90 FUSE 91 FUSE 92 FUSE 93 FUSE 94 FUSE 95 FUSE 96 FUSE 99 GATEWAY FOR POWERTRAIN CONTROL UNIT GLOVE BOX LAMP) MEDIA INTERFACE CONTROL UNIT, MULTIMEDIA CONNECTION UNIT MULTIFUNCTION CAMERA N/A PEDAL OPERATOR MONITOR SWITCH REAR WINDOW WIPER RELAY RED/BLU WIRE RED/GRN WIRE RED/GRY WIRE RED/PNK WIRE RED/VIO WIRE RED/YEL WIRE SAM CONTROL UNIT SPECIAL- PURPOSE VEHICLE INTERFACE SUPPLEMENTAL RESTRAINT SYSTEM TAILGATE WIPER MOTOR THERMAL MANAGEMENT CONTROL UNIT TIRE PRESSURE MONITOR CONTROL UNIT TRAILER RECOGNITION CONTROL UNIT TUNER UNIT (IF EQUIPPED) WEIGHT SENSING SYSTEM (WSS) CONTROL UNIT

A HF ADDITIONAL BATTERY AUX BLU WIRE BLU/BLK WIRE BLU/WHT WIRE BRN WIRE BRN/RED WIRE CAN B H CAN B L CAN-D H CAN-D L COMPUTER DATA LINES SYSTEM DRIVER SEAT CONTROL UNIT DUAL CLUTCH TRANSMISSION FULLY INTEGRATED TRANSMISSION CONTROL CONTROLLER UNIT ECO START/ STOP FUNCTION ADDITIONAL BATTERY RELAY ECO START/STOP FUNCTION ADDITIONAL BATTERY ELECTRONIC IGNITION SWITCH CONTROL UNIT FM, AM, CL (ZV) ANTENNA AMPLIFIER FROM FUSE 56 (DIAGRAM 1 OF 6) FROM VEHICLE INTERIOR FUSE BOX (DIAGRAM 2 OF 6) FT DF FUSE 23 FUSE 24 FUSE 25 FUSE 26 FUSE 60 FUSE 78 GRN WIRE GRN/WHT WIRE GRY WIRE GRY/WHT WIRE LEFT FRONT DOOR CONTROL UNIT ORG/ WIRE RED WIRE RED/BLK WIRE RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE RIGHT FRONT DOOR CONTROL UNIT SAM CONTROL UNIT TRUNK LID/ LIFT GATE CONTROL UNIT VEHICLE INTERIOR FUSE BOX W/ MEMORY

BATTERY MANAGEMENT SYSTEM C SIG CAN EL H CAN EL L CHARGER CONTROL UNIT COMPUTER DATA LINES SYSTEM CONTACT CONTROL UNIT) DC F DC/DC CONVERTER CONTROL UNIT ELECTRIC REFRIGERANT COMPRESSOR ENGINE CONTROLS SYSTEM FROM ENGINE COMPARTMENT FUSE, RELAY MODULE (DIAGRAM 3 OF 6) FROM FRONT ELECTRICAL PREFUSE BOX (DIAGRAM 1 OF 6) FUSE 751 FUSE 752 FUSE 753 FUSE 754 FUSE 755 N/A HEATING ELEMENT HIGH-VOLTAGE BATTERY COOLANT CIRCUIT HIGH-VOLTAGE DISCONNECT DEVICE HIGH-VOLTAGE PTC HEATER HV- LV (+) NCA WIRE ORG/ WIRE POT POT POT POWER ELECTRONICS CONTROL UNIT RED WIRE RED/BLK WIRE RED/WHT WIRE S- SHD SHD SUPPLEMENTAL RESTRAINT SYSTEM SWITCH THERMAL MANAGEMENT CONTROL UNIT VIO/BLU WIRE WHT/GRN WIRE YEL WIRE YEL/BRN WIRE