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

BLK WIRE BLK/YEL WIRE BRN WIRE BRN/GRN WIRE BRN/RED WIRE BRN/VIO WIRE BRN/WHT WIRE CAN B H CAN B L COMPUTER DATA LINES SYSTEM ELECTRIC COOLANT PUMP ELECTRIC REFRIGERANT COMPRESSOR FAN MOTOR (BEHIND RADIATOR) FRONT SAM CONTROL UNIT FUSE 3 FUSE 305 FUSE 315 FUSE 6 GRN WIRE GRN/VIO WIRE GRY/RED WIRE HIGH-VOLTAGE DISCONNECT DEVICE HIGH-VOLTAGE POWER DISTRIBUTOR HOT AT ALL TIMES HV- ILK ILK PNK ILK WIRE MULTIPLE FUSE 1 MULTIPLE FUSE 2 MULTIPLE FUSE 3 NCA WIRE OUTSIDE TEMPERATURE SENSOR PASSENGER- SIDE A-PILLAR BOX PNK WIRE PNK/BLK WIRE PNK/GRN WIRE POWER ELECTRONICS CONTROL UNIT RAIN/LIGHT SENSOR W/ ADDITIONAL FUNCTIONS RBA-1 RED WIRE RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE REFRIGERANT COMPRESSOR REFRIGERANT COMPRESSOR MAGNETIC CLUTCH REFRIGERANT COMPRESSOR REGULATION VALVE SHD SIG STATIONARY HEATER RADIO REMOTE CONTROL RECEIVER TELEPHONE ANTENNA SPLITTER TELEPHONE, STATIONARY HEATER ANTENNA CHANGEOVER SWITCH VIO/YEL WIRE W/ FUEL CELL RETROFITTING W/ WIRELESS PHONE CHARGING W/O FUEL CELL RETROFITTING W/O WIRELESS PHONE CHARGING WHT WIRE YEL WIRE

BLK WIRE BLK/RED WIRE BLU WIRE BLU/BRN WIRE BLU/GRN WIRE BRN WIRE BRN/RED WIRE CAN B H CAN B L CAN H H CAN H L CAN HMI H CAN HMI L COMPUTER DATA LINES COMPUTER DATA LINES SYSTEM DRIVER-SIDE FUSE, RELAY MODULE ELECTRIC PARKING BRAKE SWITCH ELECTRONIC STABILITY PROGRAM CONTROL UNIT ENGINE FUSE, RELAY MODULE EXTERIOR LIGHTS SWITCH FLEX-E BM FLEX-E BP FRONT SAM CONTROL UNIT FUSE 128 FUSE 200 FUSE 210 FUSE 322 GRN WIRE GRN/BRN WIRE GRN/RED WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/VIO WIRE GRY/YEL WIRE HAZARD LIGHT COC HAZARD SIG HOT AT ALL TIMES HOT W/ BATTERY DISCONNECT SWITCH RELAY ENERGIZED HOT W/ ENGINE COMPARTMENT TERMINAL 15 RELAY ENERGIZED INSTRUMENT CLUSTER LEFT FRONT DOOR CONTROL UNIT (IN LEFT FRONT DOOR) LEFT FRONT LAMP UNIT LEFT OUTSIDE MIRROR LEFT OUTSIDE MIRROR TURN SIGNAL LAMP NCA WIRE PASSENGER-SIDE A-PILLAR FUSE BOX PNK WIRE PNK/RED WIRE RED WIRE RED/BLK WIRE RED/YEL WIRE RIGHT FRONT DOOR CONTROL UNIT (IN RIGHT FRONT DOOR) RIGHT FRONT LAMP UNIT RIGHT OUTSIDE MIRROR RIGHT OUTSIDE MIRROR TURN SIGNAL LAMP SENS SIG SIG (1) SIG (2) SIG 3 SIG 3 PNK SENS (+) WIRE SML STEERING COLUMN MODULE CONTROL UNIT STOP LAMP SWITCH SYSTEM TSI R (+) TSI-L (+) VIO WIRE VIO/WHT WIRE W/O FUEL CELL RETROFITTING YEL WIRE YEL/WHT WIRE

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

ADAPTIVE DAMPING SYSTEM CONTROL UNIT AIR BODY CONTROL CONTROL UNIT AUDIO COMAND CONTROL PANEL BRN WIRE CENTER CONSOLE CUP HOLDER ILLUMINATION CONDENSATION SENSOR FOR FUEL FILTER WITH HEATING ELEMENT DRIVER SEAT CONTROL UNIT DRIVER SEAT LUMBAR SUPPORT ELECTROPNEUMATIC CONTROLLER UNIT DRIVER SEAT LUMBAR SUPPORT PNEUMATIC PUMP DRIVER SEAT PARTIALLY ELECTRIC SEAT ADJUSTMENT SWITCH DRIVER SIDE BAG SQUIB ELECTRIC COOLANT PUMP ELECTRICAL POWER STEERING CONTROL UNIT ELECTRONIC DIFFERENTIAL CONTROL UNIT FRONT CENTER CONSOLE CUP HOLDER AMBIANCE ILLUMINATION FRONT SAM CONTROL UNIT HEAD UNIT LEFT FRONT ILLUMINATED DOOR SILL MOLDING LEFT FRONT MULTICONTOUR SEAT CONTROL UNIT LEFT FRONT REVERSIBLE EMERGENCY TENSIONING RETRACTOR LEFT REAR DOOR CONTROL UNIT LEFT REAR FOOTWELL ILLUMINATION AMBIANCE ILLUMINATION (LED) LEFT REAR ILLUMINATED DOOR SILL MOLDING LEFT TABLET PC ELECTRICAL CONNECTOR LOWER LEFT CENTER CONSOLE AMBIENT LIGHTING LOWER RIGHT CENTER CONSOLE AMBIENT LIGHTING MOBILE PHONE CRADLE CONTROL UNIT PANORAMIC SLIDING SUNROOF ROLLER SUN BLIND BUTTON POWER ELECTRONICS CONTROL UNIT RIGHT REAR FOOTWELL LAMP RIGHT REAR LAMP UNIT SOUND SYSTEM AMPLIFIER CONTROL UNIT TOUCHPAD UPPER LEFT CENTER CONSOLE AMBIENT LIGHTING UPPER RIGHT CENTER CONSOLE AMBIENT LIGHTING W/ INTERIOR LIGHTS PACKAGE W/ MEMORY

AMBIANCE ILLUMINATION CONTROL UNIT BLU WIRE BLU/WHT WIRE BRN WIRE BRN/RED WIRE CAN B H CAN B L CLIMATE CONTROL UNIT DC/DC CONVERTER CONTROL UNIT DRIVER SEAT CONTROL UNIT FRONT PASSENGER SEAT CONTROL UNIT FRONT SAM CONTROL UNIT KEYLESS-GO CONTROL UNIT LEFT FRONT DOOR CONTROL UNIT LEFT FRONT MULTICONTOUR SEAT CONTROL MODULE LEFT INTERIOR CAN (CAN B) POTENTIAL DISTRIBUTOR ELECTRICAL CONNECTOR LEFT REAR DOOR CONTROL UNIT OVERHEAD CONTROL PANEL CONTROL UNIT PANORAMIC SLIDING SUNROOF CONTROL MODULE REAR SAM CONTROL UNIT RIGHT FRONT DOOR CONTROL UNIT RIGHT FRONT MULTICONTOUR SEAT CONTROL MODULE RIGHT REAR DOOR CONTROL UNIT SLIDING ROOF CONTROL MODULE TAILGATE CONTROL UNIT VIO WIRE VIO/WHT WIRE YEL WIRE YEL/WHT WIRE

BRN WIRE BRN/RED WIRE CAN B H CAN B L CAN LR H CAN LR L COMPUTER DATA LINES SYSTEM DRIVER-SIDE FUSE, RELAY MODULE ELECTRONIC IGNITION SWITCH CONTROL UNIT FLEX-E BP PNK FLEX-E BM WIRE FRONT SAM CONTROL UNIT FUSE 200 FUSE 210 GRN WIRE HORNS CONTACT PLATE HOT W/ BATTERY DISCONNECT SWITCH RELAY ENERGIZED LEFT FANFARE HORN NCA WIRE RED WIRE RED/BLK WIRE RIGHT FANFARE HORN SIG STEERING COLUMN MODULE CONTROL UNIT STEERING WHEEL ELECTRONICS YEL WIRE

BATTERY DISCONNECT SWITCH RELAY BLK WIRE BRN WIRE CENTER FUEL CELL COOLING COOLANT PUMP ECO START/STOP FUNCTION ADDITIONAL BATTERY RELAY ELECTRIC COOLANT PUMP ELECTRICAL POWER STEERING CONTROL UNIT ELECTRONIC BLOWER CONTROLLER ELECTRONIC STABILITY PROGRAM CONTROL UNIT FAN MOTOR FRONT SAM CONTROL UNIT FULLY INTEGRATED TRANSMISSION CONTROL UNIT FUSE 1 FUSE 10 FUSE 13 FUSE 2 FUSE 3 FUSE 4 FUSE 5 FUSE 6 FUSE 7 FUSE 8 FUSE 9 LEFT FUEL CELL COOLING COOLANT PUMP N/A NCA WIRE ON-BOARD ELECTRICAL SYSTEM BATTERY POWER ELECTRONICS CONTROL UNIT RED (OR RED/BLU) WIRE RED WIRE RED/BLU WIRE RED/GRY WIRE RED/WHT WIRE RED/YEL WIRE REL C (+) REL O (+) REL O GND SPECIAL PURPOSE VEHICLE FUSE BLOCK 1 TERMINAL BLOCK (CIRCUIT 30) TO DRIVER-SIDE FUSE, RELAY MODULE (DIAGRAM 2 OF 9) TO ELECTRONIC IGNITION SWITCH CONTROL UNIT (DIAGRAM 5 OF 9) TO ENGINE FUSE, RELAY MODULE (DIAGRAM 9 OF 9) TO PASSENGER- SIDE A-PILLAR FUSE BOX (DIAGRAM 6 OF 9) TO PASSENGER-SIDE A-PILLAR FUSE BOX (DIAGRAM 7 OF 9) TO REAR FUSE, RELAY MODULE (DIAGRAM 3 OF 9) VOLTAGE DIP LIMITER W/ FUEL CELL RETROFITTING W/O FUEL CELL RETROFITTING

AMBIANCE ILLUMINATION CONTROL UNIT AUDIO EQUIPMENT FAN MOTOR BOOSTER BLOWER ELECTRONIC BLOWER REGULATOR CARSHARING CONTROL UNIT CLIMATE CONTROL OPERATING UNIT CLIMATE CONTROL UNIT DIAGNOSTIC CONNECTOR FROM ENGINE COMPARTMENT PREFUSE BOX (DIAGRAM 1 OF 9) FRONT SAM CONTROL UNIT FUSE 200 FUSE 201 FUSE 202 FUSE 203 FUSE 204 FUSE 205 FUSE 206 FUSE 207 FUSE 208 FUSE 209 FUSE 210 FUSE 211 FUSE 212 FUSE 213 FUSE 214 FUSE 215 FUSE 216 FUSE 217 FUSE 218 FUSE 219 FUSE 220 LEFT FRONT REVERSIBLE EMERGENCY TENSIONING RETRACTOR LEFT REAR DOOR CONTROL UNIT MONO MULTI-FUNCTION CAMERA N/A NCA WIRE PARKING SYSTEM CONTROL UNIT PWR-1 PWR-2 RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE STEERING COLUMN MODULE CONTROL UNIT STEREO MULTI-FUNCTION CAMERA UPPER CONTROL PANEL CONTROL UNIT W/ FUEL CELL RETROFITTING W/O FUEL CELL RETROFITTING

AIRMATIC RELAY ALL-WHEEL DRIVE CONTROL UNIT BLK/RED WIRE COOLANT PUMP RELAY CPC RELAY DRIVETRAIN CONTROL UNIT ELECTRONIC STABILITY PROGRAM CONTROL UNIT ENGINE COMPARTMENT TERMINAL 15 RELAY EXTERIOR LIGHTS SWITCH FANFARE HORN RELAY FROM ENGINE COMPARTMENT PREFUSE BOX (DIAGRAM 1 OF 9) FRONT SAM CONTROL UNIT FUSE 108 FUSE 109 FUSE 110 FUSE 111 FUSE 112 FUSE 117 FUSE 120 FUSE 121 FUSE 122 FUSE 123 FUSE 124 FUSE 125 FUSE 126 FUSE 128 FUSE 129 FUSE 130 FUSE 133 LEFT FRONT LAMP UNIT ME-SFI (ME) CONTROL UNIT N/A OIL PUMP RELAY ORG/BLU WIRE PNK/RED WIRE REAR USB ELECTRICAL CONNECTOR RED WIRE RED/BLK WIRE RED/BLU WIRE RED/YEL WIRE RIGHT FRONT LAMP UNIT STARTER CIRCUIT 50 RELAY TO PARK PAWL CAPACITOR (DIAGRAM 5 OF 9) VACUUM PUMP RELAY W/ DYNAMIC LED W/ STATIC LED W/ DYNAMIC LED W/O FUEL CELL RETROFITTING WIPER MOTOR WIPER PARK POSITION HEATER RELAY

BLK/YEL WIRE BLU WIRE BRN WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/RED WIRE CAN B H CAN B L COMPUTER DATA LINES SYSTEM CRASH DRIVER AIR BAG SQUIB 1 DRIVER AIR BAG SQUIB 2 DRIVER SEAT BELT BUCKLE SWITCH DRIVER-SIDE FUSE, RELAY MODULE FRONT PASSENGER SEAT BELT BUCKLE SWITCH FRONT SAM CONTROL UNIT FUSE 200 FUSE 312 FUSE 316 GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GRN/YEL WIRE GRY/GRN WIRE HOT W/ BATTERY DISCONNECT SWITCH RELAY ENERGIZED NCA WIRE PASSENGER-SIDE A-PILLAR FUSE BOX PNK/GRN WIRE PNK/RED WIRE RED WIRE RED/WHT WIRE RIGHT REAR DOOR PRESSURE SENSOR RIGHT REAR EMERGENCY TENSIONING RETRACTOR SQUIB RIGHT SIDE BAG SENSOR STEERING COLUMN MODULE CONTROL UNIT VIO WIRE VIO/YEL WIRE W/ FUEL CELL RETROFITTING W/O FUEL CELL RETROFITTING WHT/BLK WIRE WHT/BLU WIRE WHT/GRY WIRE