Mercedes-Benz GLC-class Coupe C253 facelift (2019-2023) rear sam control unit Wiring diagrams

BLK WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BLU/YEL WIRE BRAKE FLUID LEVEL SWITCH BRN WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/RED WIRE BRN/WHT WIRE CAN B H CAN B L CAN HMI H CAN HMI L COC COMPUTER DATA LINES SYSTEM DRIVER-SIDE FUSE, RELAY MODULE FRONT SAM CONTROL UNIT (LEFT END OF DASH) FUSE 200 FUSE 477 GRN/GRY WIRE GRN/RED WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/ORG WIRE HOT W/ BATTERY DISCONNECT SWITCH RELAY ENERGIZED INSTRUMENT CLUSTER PEDAL ANGLE SENSOR REAR FUSE, RELAY MODULE REAR SAM CONTROL UNIT RED WIRE RIGHT FRONT AXLE RPM SENSOR RIGHT FRONT BRAKE WEAR SENSOR RIGHT REAR AXLE RPM SENSOR RIGHT REAR BRAKE WEAR SENSOR SIG SIG GND WHT WIRE YEL WIRE YEL/WHT WIRE

BLK WIRE BLU WIRE BLU/BLK WIRE BLU/BRN WIRE BLU/RED WIRE BRN WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/RED WIRE CAN B H CAN B L CENTRAL LOCKING MOTOR COMPUTER DATA LINES SYSTEM FUSE 408 FUSE 477 GRN WIRE GRY WIRE HOT W/ BATTERY DISCONNECT SWITCH RELAY ENERGIZED LEFT FRONT DOOR EXIT, WARNING LAMP LEFT REAR DOOR AMBIANCE ILLUMINATION LEFT REAR DOOR CONTROL UNIT LEFT REAR DOOR EXIT, WARNING LAMP LEFT REAR DOOR EXTERIOR DOOR HANDLE ILLUMINATION LEFT REAR DOOR HANDLE AMBIANCE ILLUMINATION LEFT REAR DOOR HANDLE ILLUMINATION LEFT REAR DOOR LOCK MOT GND/(+) MOT GND/(+) 31 MOT- ORG/ WIRE PASSENGER-SIDE A-PILLAR FUSE BOX PNK/BLU WIRE PNK/VIO WIRE REAR FUSE, RELAY MODULE REAR SAM CONTROL UNIT RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE RIGHT FRONT DOOR LOCK ROTARY TUMBLER SWITCH SIG SIG (+) HECKD SIG GND SIG HECKR TANK CAP CENTRAL LOCKING ACTUATOR TRUNK LID/LIFTGATE LOCK W/ FUEL CELL RETROFITTING W/ INTERIOR LIGHTS PACKAGE W/O FUEL CELL RETROFITTING YEL WIRE

BLK WIRE BRN WIRE BRN/RED WIRE BSM BSM GND CAN B H CAN B L CAN PER H CAN PER L COMPUTER DATA LINES SYSTEM FUSE 302 FUSE 406 GRN WIRE GRN/WHT WIRE HECKD HOT AT ALL TIMES LEFT FRONT DOOR CONTROL UNIT LEFT OUTER REAR BUMPER INTEGRATED RADAR SENSOR LEFT OUTSIDE MIRROR PASSENGER-SIDE A-PILLAR FUSE BOX REAR FUSE, RELAY MODULE REAR SAM CONTROL UNIT RED WIRE RED/BLU WIRE RIGHT FRONT DOOR CONTROL UNIT RIGHT OUTER REAR BUMPER INTEGRATED RADAR SENSOR RIGHT OUTSIDE MIRROR

2.0L TURBO AIR BODY CONTROL PLUS CONTROL UNIT ALTERNATING CURRENT CHARGER FOR HIGH VOLTAGE BATTERY BACKUP CAMERA CONTROL UNIT BRN WIRE COOLANT CIRCULATION PUMP ELECTRIC COOLANT PUMP ELECTRONIC DIFFERENTIAL CONTROL UNIT EXHAUST FLAP ACTUATOR MOTOR HIGH VOLTAGE BATTERY MODULE KEYLESS-GO CONTROL UNIT LEFT EXHAUST FLAP SWITCHOVER VALVE LEFT FANFARE HORN LEFT LUGGAGE COMPARTMENT LAMP LEFT LUGGAGE COMPARTMENT REAR BACKREST RELEASE BUTTON LEFT REAR BACKREST INCLINATION SWITCH LEFT REAR BACKREST RELEASE ACTUATOR LEFT REAR LAMP UNIT LEFT, RIGHT ROOF LIGHT BAR ELECTRICAL CONNECTOR LOW TEMPERATURE CIRCUIT CIRCULATION PUMP 1 LOW TEMPERATURE CIRCUIT CIRCULATION PUMP 2 LOW TEMPERATURE CIRCUIT SWITCHOVER VALVE LOW TEMPERATURE CIRCUIT SWITCHOVER VALVE 2 LUGGAGE COMPARTMENT SOCKET MERCEDES-BENZ INTELLIGENT DRIVE CONTROL UNIT NCA WIRE PARKING SYSTEM CONTROL UNIT POWER ELECTRONICS CONTROL UNIT PWR-2 REAR END SOUND GENERATOR REAR SAM CONTROL UNIT REAR WINDOW INTERFERENCE SUPPRESSION CAPACITOR RIGHT FRONT LAMP UNIT RIGHT REAR LAMP UNIT SOUND GENERATOR CONTROL UNIT SOUND SYSTEM AMPLIFIER CONTROL UNIT SPECIAL SIGNAL SYSTEM CONTROL UNIT SPECIAL VEHICLE MULTI-FUNCTION CONTROL UNIT (SVMCU (MSS)) SUBWOOFER AMPLIFIER TACHOGRAPH ELECTRICAL CONNECTOR TAILGATE CONTROL UNIT TIRE PRESSURE MONITOR CONTROL UNIT TRAILER RECOGNITION CONTROL UNIT TRAILER SOCKET (7-PIN) TRANSMISSION OIL COOLING COOLANT CIRCULATION PUMP TRUNK LID/LIFT GATE FULLY ELECTRIC TRAILER HITCH SWITCH TWO WAY RADIO CONNECTING POINT 1 VEHICLE SOCKET ELECTRICAL CONNECTOR W/ FUEL CELL RETROFITTING WHT WIRE

ADBLUE CONTROL UNIT AIR BODY CONTROL COMPRESSOR BATTERY SENSOR BLK WIRE BLK/YEL WIRE BRN WIRE BRN/GRN WIRE CHARGE AIR COOLER CIRCULATION PUMP DC/AC CONVERTER CONTROL UNIT DC/DC CONVERTER CONTROL UNIT FAN MOTOR INNER LEFT REAR LAMP UNIT INNER RIGHT REAR LAMP UNIT LEFT FANFARE HORN LEFT FRONT LAMP UNIT LEFT LICENSE PLATE LAMP LEFT OUTER REAR BUMPER INTEGRATED RADAR SENSOR LEFT OUTER REAR BUMPER RADAR SENSOR LEFT REAR CENTER CONSOLE AMBIANCE ILLUMINATION LEFT REAR CENTER CONSOLE ILLUMINATION LEFT REAR PASSENGER COMPARTMENT USB PORT LOW TEMPERATURE CIRCUIT CIRCULATION PUMP 1 LOW TEMPERATURE CIRCUIT CIRCULATION PUMP 2 LOW TEMPERATURE CIRCUIT SWITCHOVER VALVE REAR FUSE, RELAY MODULE REAR SAM CONTROL UNIT REAR SWITCHING MODULE REAR WINDOW GLASS BREAKAGE SENSOR RIGHT FANFARE HORN RIGHT LUGGAGE COMPARTMENT LAMP RIGHT LUGGAGE COMPARTMENT REAR BACKREST RELEASE BUTTON RIGHT OUTER REAR BUMPER INTEGRATED RADAR SENSOR RIGHT OUTER REAR BUMPER RADAR SENSOR RIGHT REAR CENTER CONSOLE AMBIANCE ILLUMINATION RIGHT REAR PASSENGER COMPARTMENT USB PORT SPRAY NOZZLE HOSE HEATER TAILGATE WIPER MOTOR TANK CAP CENTRAL LOCKING ACTUATOR TIRE PRESSURE MONITOR CONTROL UNIT TRUNK LID/ REAR-END DOOR FLASHING LIGHT TRUNK LID/LIFTGATE EXTERNAL OPERATION SWITCH TRUNK LID/LIFTGATE LOCK W/ POSITIONING, TRACKING SYSTEM WIPER MOTOR

2.0L TURBO ACTIVE BRAKE ASSIST CONTROLLER UNIT ALARM SIREN BATTERY DISCONNECT SWITCH RELAY BLK WIRE BLUE LIGHT SEPARATION POINT BRN WIRE CENTER REAR SEAT BELT BUCKLE SWITCH CONTROL UNIT OF NOX SENSOR UPSTREAM OF DIESEL OXIDATION CATALYTIC CONVERTER DC/DC CONVERTER CONTROL UNIT ELECTRIC BRAKE CONTROL ELECTRICAL CONNECTOR ENGINE COMPARTMENT PREFUSE BOX FAN MOTOR FRONT CIGARETTE LIGHTER W/ ASHTRAY ILLUMINATION FRONT SAM CONTROL UNIT FUEL PUMP CONTROL UNIT HERMES CONTROL UNIT HYBRID CAN (CAN L) POTENTIAL DISTRIBUTOR ELECTRICAL CONNECTOR LEFT ACTIVE ENGINE MOUNT LEFT FRONT DOOR CONTROL UNIT ME-SFI (ME) CONTROL UNIT MONO MULTI-FUNCTION CAMERA PASSENGER SIDE ENGINE HOOD CONTACT SWITCH RADOME HEATER REAR SAM CONTROL UNIT REAR SEAT HEATERS CONTROL UNIT REAR USB ELECTRICAL CONNECTOR RIGHT ACTIVE ENGINE MOUNT RIGHT FRONT BRAKE WEAR SENSOR RIGHT REAR BACKREST INCLINATION SWITCH RIGHT REAR BACKREST RELEASE ACTUATOR RIGHT REAR BRAKE WEAR SENSOR ROOF LIGHT BAR SEPARATION POINT SHORT, LONG-RANGE RADAR SENSOR STATIONARY HEATER FUEL PUMP STATIONARY HEATER RADIO REMOTE CONTROL RECEIVER STATIONARY HEATER SWITCHOVER VALVE STATIONARY HEATER UNIT STEREO MULTI-FUNCTION CAMERA TELEPHONE, STATIONARY HEATER ANTENNA CHANGEOVER SWITCH TWO-WAY RADIO SWITCH USER INTERFACE CAN (CAN HMI) POTENTIAL DISTRIBUTOR ELECTRICAL CONNECTOR VOLTAGE DIP LIMITER W/ FUEL CELL RETROFITTING W/O FUEL CELL RETROFITTING

BACKUP CAMERA CONTROL UNIT BLU WIRE BRN WIRE BRN/RED WIRE BRN/WHT WIRE CAN B H CAN B L CAN HMI H CAN HMI L COMPUTER DATA LINES SYSTEM FUSE 417 FUSE 477 HEAD UNIT (CENTER OF DASH) HOT AT ALL TIMES HSVL MOT (+)/GND HECKD MOT GND/(+) NCA WIRE REAR CAMERA COVER MOTOR REAR FUSE, RELAY MODULE REAR OF LUGGAGE COMPT) REAR SAM CONTROL UNIT RED WIRE SHD SHD RVC SIG YEL WIRE YEL/WHT WIRE

BRN WIRE BRN/RED WIRE CAN B H CAN B L CLIMATE CONTROL OPERATING UNIT COMPUTER DATA LINES SYSTEM DRIVER-SIDE FUSE, RELAY MODULE FUSE 206 FUSE 474 FUSE 7 HEATED REAR WINDOW RELAY HECKR HOT W/ BATTERY DISCONNECT SWITCH RELAY ENERGIZED NCA WIRE REAR FUSE, RELAY MODULE REAR SAM CONTROL UNIT REAR WINDOW HEATER REAR WINDOW INTERFERENCE SUPPRESSION CAPACITOR RED WIRE RED/BLU WIRE RED/WHT WIRE REL (+) VEHICLE INTERIOR PREFUSE BOX VIO/GRN WIRE

BASIC BBV VR BCL SW DR(-) BLK WIRE BLU WIRE BRAKE FLUID LEVEL SWITCH BRN WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/RED WIRE BRN/WHT WIRE CAN B H CAN B L CAN B L RBA-1 CAN H H CAN H L CAN HMI H CAN HMI L COMPUTER DATA LINES SYSTEM DRIVER SEAT BELT BUCKLE SWITCH DRIVER SEAT POSITION DETECTION SWITCH DRIVER-SIDE FUSE, RELAY MODULE ELECTRIC PARKING BRAKE SWITCH ELECTRONIC STABILITY PROGRAM CONTROL UNIT ENGINE COMPARTMENT PREFUSE BOX FRONT SAM CONTROL UNIT FUSE 1 FUSE 200 FUSE 312 FUSE 316 FUSE 322 FUSE 477 GRN WIRE GRY/BLU WIRE GRY/GRN WIRE HOT AT ALL TIMES HOT W/ BATTERY DISCONNECT SWITCH RELAY ENERGIZED INSTRUMENT CLUSTER LEFT FRONT DOOR CONTROL UNIT LEFT FRONT DOOR LOCK LEFT FRONT DOOR ROTARY TUMBLER SWITCH PASSENGER-SIDE A-PILLAR FUSE BOX PWR-1 REAR FUSE, RELAY MODULE REAR SAM CONTROL UNIT RED WIRE RED/WHT WIRE RED/YEL WIRE RIGHT FRONT BRAKE WEAR SENSOR RIGHT REAR BRAKE WEAR SENSOR SIG SIG 3 SIG 4 SUPPLEMENTAL RESTRAINT SYSTEM CONTROL UNIT VIO WIRE VIO/WHT WIRE W/ FUEL CELL RETROFITTING W/O FUEL CELL RETROFITTING WHT WIRE WHT/GRY WIRE YEL WIRE YEL/WHT WIRE

BLK/BLU WIRE BLK/YEL WIRE BLU/WHT WIRE BRN WIRE BRN/GRY WIRE BRN/RED WIRE BRN/YEL WIRE CAN B H CAN B L CAN HMI H CAN HMI L COMPUTER DATA LINES SYSTEM DRIVER-SIDE FUSE, RELAY MODULE ENGINE COMPARTMENT PREFUSE BOX ENGINE FUSE, RELAY MODULE FRONT SAM CONTROL UNIT FUSE 106 FUSE 111 112 FUSE 200 FUSE 3 FUSE 305 FUSE 477 FUSE 5 HOT W/ BATTERY DISCONNECT SWITCH RELAY ENERGIZED INSTRUMENT CLUSTER MOT GND/(+) MOT (+)/GND MULTIPLE FUSE 1 N/A PASSENGER-SIDE A-PILLAR FUSE BOX RAIN/LIGHT SENSOR W/ ADDITIONAL FUNCTIONS REAR FUSE, RELAY MODULE REAR SAM CONTROL UNIT RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE SIG SIG (+) HECKD SIG (+) MOT (+)/GND MOT GND/(+) SPRAY NOZZLE HOSE HEATER (CENTER REAR OF ENGINE COMPT) TAILGATE WIPER MOTOR W/ FUEL CELL RETROFITTING W/O FUEL CELL RETROFITTING WINDSHIELD WASHER SYSTEM PUMP WINDSHIELD WASHER SYSTEM WASHER FLUID LEVEL SWITCH WIPER MOTOR WIPER PARK POSITION HEATER RELAY YEL WIRE YEL/WHT WIRE