Mercedes-Benz GLC-class Coupe C253 facelift (2019-2023) steering column module control unit Wiring diagrams

BLU WIRE BLU/WHT WIRE BRN WIRE CAN HMI H CAN HMI 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 FULLY INTEGRATED TRANSMISSION CONTROL UNIT (IN BOTTOM OF TRANSMISSION) FUSE 10 FUSE 202 GRN WIRE HOT AT ALL TIMES HOT W/ BATTERY DISCONNECT SWITCH RELAY ENERGIZED INSTRUMENT CLUSTER NCA WIRE P NOT RED WIRE SIG STEERING COLUMN MODULE CONTROL UNIT STEERING WHEEL DOWNSHIFT BUTTON STEERING WHEEL ELECTRONICS STEERING WHEEL UPSHIFT BUTTON VEHICLE INTERIOR PREFUSE BOX YEL WIRE YEL/WHT WIRE

BRN WIRE CAN L R H CAN L R L CAN LR H CAN LR L COMPUTER DATA LINES SYSTEM FLEX RAY 1 BM FLEX RAY 1 BP GNSS GPS GRN WIRE HEAD UNIT MULTI-FUNCTION STEERING WHEEL BUTTON GROUP HSVL INSTRUMENT CLUSTER INSTRUMENT CLUSTER MULTI-FUNCTION STEERING WHEEL BUTTON GROUP NAVIGATION SYSTEM NCA WIRE PNK WIRE RED WIRE RVC SHIELD SPV/AR STEERING COLUMN MODULE CONTROL UNIT STEERING WHEEL ELECTRONICS WHT WIRE WHT/ORG WIRE YEL WIRE YEL/WHT WIRE

BRN WIRE CAN L R H CAN L R L CAN LR H CAN LR L COMPUTER DATA LINES SYSTEM FLEX RAY 1 BM FLEX RAY 1 BP GNSS GPS GRN WIRE HEAD UNIT MULTI-FUNCTION STEERING WHEEL BUTTON GROUP HSVL INSTRUMENT CLUSTER INSTRUMENT CLUSTER MULTI-FUNCTION STEERING WHEEL BUTTON GROUP NAVIGATION SYSTEM NCA WIRE PNK WIRE RED WIRE RVC SHIELD SPV/AR STEERING COLUMN MODULE CONTROL UNIT STEERING WHEEL ELECTRONICS WHT WIRE WHT/ORG WIRE YEL WIRE YEL/WHT WIRE

BLK WIRE BLK/WHT WIRE BLU/BLK WIRE BLU/WHT WIRE BRN WIRE CAN LR H CAN LR L COMPUTER DATA LINES SYSTEM ELECTRONIC IGNITION SWITCH CONTROL UNIT FLEX-E BM FLEX-E BP FUSE 472 GRN WIRE GRN/WHT WIRE GRY/BLU WIRE HEAD UNIT MULTI-FUNCTION STEERING WHEEL BUTTON GROUP HOT W/ BATTERY DISCONNECT SWITCH RELAY ENERGIZED INSTRUMENT CLUSTER MULTI-FUNCTION STEERING WHEEL BUTTON GROUP INTELLIGENT DRIVE CONTROL UNIT ME-SFI (ME) CONTROL UNIT MOT- NCA WIRE PNK WIRE REAR FUSE, RELAY MODULE RED/WHT WIRE SENS (+) SENS GND SENS 1 SENS 2 STEERING COLUMN MODULE CONTROL UNIT STEERING WHEEL ELECTRONICS THROTTLE VALVE ACTUATOR VIO WIRE VIO/WHT WIRE YEL WIRE

AUDIO EQUIPMENT FAN MOTOR AUDIO/ COMAND DISPLAY BOOSTER BLOWER ELECTRONIC BLOWER REGULATOR BRN WIRE BRN/BLK WIRE BRN/YEL WIRE CARSHARING CONTROL UNIT CIRCUIT 31 POTENTIAL DISTRIBUTOR 1 CIRCUIT 31 POTENTIAL DISTRIBUTOR 2 CLIMATE CONTROL OPERATING UNIT CLIMATE CONTROL UNIT CYLINDER 1 IGNITION COIL CYLINDER 2 IGNITION COIL CYLINDER 3 IGNITION COIL CYLINDER 4 IGNITION COIL DIAGNOSTIC CONNECTOR DRIVER SIDE ENGINE HOOD CONTACT SWITCH DRIVER-SIDE INSTRUMENT PANEL BUTTON GROUP DRIVETRAIN SENSOR CAN (CAN I) POTENTIAL DISTRIBUTOR ELECTRICAL CONNECTOR ELECTRIC COOLANT PUMP ELECTRIC PARKING BRAKE SWITCH ELECTRONIC BLOWER CONTROLLER ELECTRONIC STABILITY PROGRAM CONTROL UNIT FAN MOTOR HEAD-UP DISPLAY INSTRUMENT CLUSTER KEYLESS GO START/STOP BUTTON LEFT FRONT FOOTWELL AMBIANCE ILLUMINATION LEFT INTERIOR CAN (CAN B) POTENTIAL DISTRIBUTOR ELECTRICAL CONNECTOR ME-SFI (ME) CONTROL UNIT NCA WIRE PERIPHERALS CAN (CAN PER) POTENTIAL DISTRIBUTOR ELECTRICAL CONNECTOR RIGHT FRONT FOOTWELL AMBIANCE ILLUMINATION STARTER ALTERNATOR COOLANT PUMP STEERING COLUMN MODULE CONTROL UNIT STOWAGE COMPARTMENT ILLUMINATION TELEMATICS CAN (CAN A) POTENTIAL DISTRIBUTOR ELECTRICAL CONNECTOR TOP OF ENGINE) UPPER CONTROL PANEL CONTROL UNIT W/ AMBIANCE ILLUMINATION, INTERIOR LIGHTS PACKAGE W/ FUEL CELL RETROFITTING WHT WIRE

BLK WIRE BLU/BRN WIRE BRN WIRE BRN/RED WIRE CAN B H CAN B L CAN HMI H CAN HMI L CAN PER H CAN PER L COC COMPUTER DATA LINES SYSTEM DRIVER-SIDE FUSE, RELAY MODULE ENGINE FUSE, RELAY MODULE EXTERIOR LIGHTS SWITCH FLEX-E BP PNK FLEX-E BM WIRE FUSE 126 FUSE 200 FUSE 202 FUSE 3 FUSE 305 FUSE 322 GRN WIRE GRN/WHT WIRE GRY/BLU WIRE HOT AT ALL TIMES HOT W/ BATTERY DISCONNECT SWITCH RELAY ENERGIZED HOT W/ ENGINE COMPARTMENT TERMINAL 15 RELAY ENERGIZED INSTRUMENT CLUSTER LEFT FRONT LEVEL SENSOR LEFT REAR LEVEL SENSOR MULTIPLE FUSE 1 PASSENGER-SIDE A-PILLAR FUSE BOX PNK WIRE PNK/RED WIRE RAIN/LIGHT SENSOR W/ ADDITIONAL FUNCTIONS RED WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE RIGHT FRONT LAMP UNIT SENS SIG (1) SIG (2) SIG 3 STEERING COLUMN MODULE CONTROL UNIT VIO WIRE W/ FUEL CELL RETROFITTING W/O FUEL CELL RETROFITTING WHT WIRE WHT/YEL WIRE YEL WIRE YEL/WHT WIRE

BLK WIRE BLU/BLK 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 COC COMPUTER DATA LINES SYSTEM DRIVER-SIDE FUSE, RELAY MODULE DTRL 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 126 FUSE 200 FUSE 202 FUSE 3 FUSE 305 FUSE 312 FUSE 322 GRN WIRE GRY/BLU WIRE GRY/ORG WIRE GRY/PNK WIRE GRY/VIO WIRE GRY/WHT WIRE GRY/YEL WIRE HB (+) HOT AT ALL TIMES HOT W/ BATTERY DISCONNECT SWITCH RELAY ENERGIZED HOT W/ ENGINE COMPARTMENT TERMINAL 15 RELAY ENERGIZED INSTRUMENT CLUSTER LB (+) LEFT FRONT LAMP UNIT MULTIPLE FUSE 1 OVERHEAD CONTROL PANEL CONTROL UNIT PASSENGER-SIDE A-PILLAR FUSE BOX PNK WIRE PNK/RED WIRE RAIN/LIGHT SENSOR W/ ADDITIONAL FUNCTIONS RED WIRE RED/WHT WIRE RED/YEL WIRE RIGHT FRONT LAMP UNIT SENS SENS (+) SIG 3 SIG (1) SIG (2) SIG 3 SIG 4 SML STEERING COLUMN MODULE CONTROL UNIT TSI L (+) 31 TSI R (+) TSI R (+) 31 TSI-L (+) VIO WIRE VIO/WHT WIRE W/ FUEL CELL RETROFITTING W/O FUEL CELL RETROFITTING YEL WIRE YEL/WHT WIRE

BLK WIRE BLU/BRN WIRE BRN WIRE BRN/RED WIRE CAN B H CAN B L CAN H H CAN H L CAN HMI H CAN HMI L CAN PER H CAN PER L COMPUTER DATA LINES SYSTEM DRIVER-SIDE FUSE, RELAY MODULE ELECTRIC PARKING BRAKE SWITCH ELECTRONIC STABILITY PROGRAM CONTROL UNIT (LEFT REAR OF ENGINE COMPT) ENGINE FUSE, RELAY MODULE EXTERIOR LIGHTS SWITCH FLEX-E BM FLEX-E BP FRONT SAM CONTROL UNIT (LEFT END OF DASH) FUSE 110 FUSE 126 FUSE 133 111 FUSE 200 FUSE 202 FUSE 3 FUSE 305 FUSE 322 GRN WIRE GRN/WHT WIRE GRY/BLU WIRE HOT AT ALL TIMES HOT W/ BATTERY DISCONNECT SWITCH RELAY ENERGIZED HOT W/ ENGINE COMPARTMENT TERMINAL 15 RELAY ENERGIZED INSTRUMENT CLUSTER LEFT FRONT LAMP UNIT MULTIPLE FUSE 1 PASSENGER-SIDE A-PILLAR FUSE BOX PNK SENS (+) WIRE PNK WIRE PNK/RED WIRE RAIN/LIGHT SENSOR W/ ADDITIONAL FUNCTIONS RED WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE RIGHT FRONT LAMP UNIT SENS SENS COC SIG (1) SIG (2) SIG 3 SIG 4 STEERING COLUMN MODULE CONTROL UNIT VIO WIRE VIO/WHT WIRE W/ FUEL CELL RETROFITTING W/O FUEL CELL RETROFITTING YEL WIRE YEL/WHT WIRE

BRN WIRE COMPUTER DATA LINES SYSTEM DRIVER-SIDE FUSE, RELAY MODULE FLEX-E BM FLEX-E BP FUSE 210 GRN WIRE HEATING ELEMENT HEATING ELEMENT TEMPERATURE SENSOR HOT W/ BATTERY DISCONNECT SWITCH RELAY ENERGIZED LH - NCA WIRE NTC- PNK WIRE RED/BLK WIRE SENS GND SIG STEERING COLUMN MODULE CONTROL UNIT STEERING WHEEL ELECTRONICS STEERING WHEEL HEATER

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