Mercedes-Benz GLC-class X253 (2015-2019) overhead control panel control unit Wiring diagrams

30 LIN ALARM SIREN ATA (EDM)/TOWING SENSOR/ INTERIOR MOTION SENSOR CONTROL UNIT ATA (EDW) FUNCTION IND BRN WIRE BRN/BLK WIRE BRN/GRN WIRE BRN/RED WIRE BRN/WHT WIRE CAN B H CAN B L CAN HMI H CAN HMI L COMPUTER DATA LINES SYSTEM EMERGENCY ALARM SYSTEM "CANCEL" BUTTON EMERGENCY ALARM SYSTEM "TRIGGER" BUTTON EMERGENCY ALARM SYSTEM CANCEL BUTTON RESISTOR FUSE 202 FUSE 312 FUSE 326 FUSE 432 HOT AT ALL TIMES HOT W/ QUIESCENT CURRENT CUTOUT RELAY ENERGIZED INSTRUMENT CLUSTER INTERIOR LAMP AUTOMATIC FUNCTION BUTTON INTERIOR PROTECTION SWITCH LEFT FRONT DOOR INTERIOR PROTECTION SENSOR LEFT FUSE, RELAY MODULE LEFT REAR INTERIOR PROTECTION SENSOR MULTI-FUNCTION DISPLAY OFF OVERHEAD CONTROL PANEL CONTROL UNIT POWER DISTRIBUTION SYSTEM REAR FUSE, RELAY MODULE REAR WINDOW GLASS BREAKAGE SENSOR RED WIRE RED/GRN WIRE RED/VIO WIRE RED/WHT WIRE RIGHT A-PILLAR FUSE BOX RIGHT FRONT DOOR INTERIOR PROTECTION SENSOR RIGHT REAR INTERIOR PROTECTION SENSOR SPECIAL-PURPOSE VEHICLE MULTI-FUNCTION CONTROL UNIT UPPER CONTROL PANEL CONTROL UNIT YEL WIRE YEL/WHT WIRE

A/C BUTTON A/C, RESIDUAL HEAT ON/OFF BUTTON AIR DISTRIBUTION BUTTON AIR RECIRCULATION MODE BUTTON BLK/YEL WIRE BLU WIRE BLU/RED WIRE BLU/WHT WIRE BRN WIRE BRN/GRN WIRE BRN/RED WIRE BRN/VIO WIRE BRN/WHT WIRE CAN B H CAN B L CAN HMI H CAN HMI L CHARGE AIR TEMPERATURE SENSOR DOWNSTREAM OF THROTTLE VALVE CHARGE AIR TEMPERATURE SENSOR UPSTREAM OF THROTTLE VALVE CLIMATE CONTROL MENU BUTTON CLIMATE CONTROL MENU, RESIDUAL HEAT ON/OFF BUTTON CLIMATE CONTROL OPERATING UNIT (RIGHT SIDE OF DASH) COMPUTER DATA LINES SYSTEM COOLANT LEVEL SWITCH COOLANT TEMPERATURE GAUGE COOLANT TEMPERATURE SENSOR COOLANT TEMPERATURE WARNING LAMP COOLANT THERMOSTAT HEATING ELEMENT DEFROSTING BUTTON DRIVETRAIN CONTROL UNIT ENGINE COMPARTMENT PREFUSE BOX ENGINE CONTROLS SYSTEM ENGINE FUSE, RELAY MODULE FAN MOTOR (BEHIND RADIATOR) FRONT AUTO BUTTON FRONT BLOWER BUTTON FRONT SAM CONTROL UNIT FUSE 101 FUSE 120 FUSE 209 FUSE 315 FUSE 326 FUSE 7 GRN WIRE GRN/WHT WIRE GRN/YEL WIRE GRY/RED WIRE GRY/YEL WIRE HOT AT ALL TIMES HOT W/ HOT W/ CPC RELAY ENERGIZED HOT W/ QUIESCENT CURRENT CUTOUT RELAY ENERGIZED INSTRUMENT CLUSTER INTERIOR TEMPERATURE SENSOR W/ INTEGRATED FAN LEFT AIR DISTRIBUTION BUTTON LEFT FUSE, RELAY MODULE LEFT TEMPERATURE SELECTION BUTTON ME-SFI (ME) CONTROL UNIT OUTSIDE TEMPERATURE SENSOR OVERHEAD CONTROL PANEL CONTROL UNIT POWER DISTRIBUTION SYSTEM PURGE CONTROL VALVE PWR-1 RAIN/LIGHT SENSOR W/ ADDITIONAL FUNCTIONS RBA-1 REAR WINDOW HEATER BUTTON RED WIRE RED/GRN WIRE RED/WHT WIRE REFRIGERANT COMPRESSOR MAGNETIC CLUTCH REFRIGERANT COMPRESSOR REGULATION VALVE REFRIGERANT COMPRESSOR W/ MAGNETIC CLUTCH REG 30 RELAY ENERGIZED RIGHT A-PILLAR FUSE BOX RIGHT AIR DISTRIBUTION BUTTON RIGHT TEMPERATURE SELECTION BUTTON SIG STATIONARY HEATER BUTTON SYNC BUTTON VIO/YEL WIRE YEL WIRE YEL/WHT WIRE

AMBIENT LAMP AUTOMATIC DIMMING MIRROR BLK WIRE BLK/BLU WIRE BRN WIRE BRN/GRY WIRE BRN/RED WIRE CAN B H CAN B L COMPUTER DATA LINES SYSTEM CONVERTIBLE EXCEPT CONVERTIBLE FORWARD AUTOMATIC DIMMING MIRROR LIGHT SENSOR FRONT SAM CONTROL UNIT FUSE 302 FUSE 312 FUSE 326 FUSE 406 GARAGE DOOR OPENER GARAGE DOOR OPENER BUTTON 1 GARAGE DOOR OPENER BUTTON 2 GARAGE DOOR OPENER BUTTON 3 GARAGE DOOR OPENER INDICATOR LAMP GRN WIRE GRY WIRE HANDS FREE SYSTEM MICRO PHONE HOT AT ALL TIMES HOT W/ QUIESCENT CURRENT CUTOUT RELAY ENERGIZED INSIDE REAR VIEW MIRROR INSIDE REAR VIEW MIRROR DIMMING LEFT FRONT DOOR CONTROL UNIT LEFT OUTSIDE MIRROR LEFT READING LAMP NAVIGATION, SOUND SYSTEMS ORG/ WIRE OVERHEAD CONTROL PANEL CONTROL UNIT PNK WIRE RAIN/LIGHT SENSOR W/ ADDITIONAL FUNCTIONS RBA-1 REAR FUSE, RELAY MODULE REARWARD AUTOMATIC DIMMING MIRROR LIGHT SENSOR AUTOMATICALLY DIMMING MIRROR RED WIRE RED/GRN WIRE RED/WHT WIRE RIGHT A-PILLAR FUSE BOX RIGHT FRONT DOOR CONTROL UNIT RIGHT OUTSIDE MIRROR RIGHT READING LAMP SPG ABBL VIO WIRE WHT WIRE YEL WIRE

'MEDIA' BUTTON 'NAVI' BUTTON 'RADIO' BUTTON 'TEL' BUTTON AUDIO/COMAND DISPLAY BLK WIRE BLK/WHT WIRE BLU WIRE BREAK DOWN ASSISTANCE BUTTON BRN WIRE BRN/RED WIRE CAN A H CAN A L CAN B H CAN B L CD/DVD SINGLE DRIVE BUTTON COMPUTER DATA LINES SYSTEM DVD CHANGER CHARGING BUTTON FUSE 309 FUSE 322 FUSE 324 FUSE 329 FUSE 331 FUSE 334 GRN WIRE HEAD UNIT HOT AT ALL TIMES HOT W/ QUIESCENT CURRENT CUTOUT RELAY ENERGIZED LVDS RX+ LVDS TX- MB INFO BUTTON MOST DATA BUS CIRCUIT MOST IN MOST OUT MULTIMEDIA CONNECTION UNIT NCA WIRE ORG/ WIRE OVERHEAD CONTROL PANEL CONTROL UNIT RED WIRE RED/WHT WIRE RIGHT A-PILLAR FUSE BOX SHIELD SIG SOS BUTTON SOUND SYSTEMS TERMINATION UPPER CONTROL PANEL CONTROL UNIT VIO WIRE W/ ENGINE SOUND CONTROL W/ LIVE TRAFFIC INFORMATION W/ MULTIMEDIA W/O ENGINE SOUND CONTROL W/O LIVE TRAFFIC INFORMATION W/O MULTIMEDIA WAKE-UP WHT/YEL WIRE YEL WIRE

AMPS/CDMA AMPS/DVMA BRAKE DOWN ASSISTANCE BUTTON BRN WIRE BRN/RED WIRE CAN B H CAN B L CAN-D H CAN-D L CENTER INSTRUMENT PANEL SPEAKER COMPUTER DATA LINES SYSTEM EMERGENCY CALL SYSTEM ANTENNA EMERGENCY CALL SYSTEM CONTROL UNIT FUSE 309 GLOBAL POSITIONING SYSTEM ANTENNA SPLITTER GPS GRY WIRE GRY/BLK WIRE GRY/WHT WIRE HEAD UNIT HOT AT ALL TIMES MB INFO BUTTON MIC 1 GND MIC 1+ MUTE NCA WIRE NRS OUT OVERHEAD CONTROL PANEL CONTROL UNIT PNK/BLK WIRE RED WIRE RIGHT A-PILLAR FUSE BOX SHIELD SOS BUTTON SOUND SYSTEM AMPLIFIER CONTROL UNIT SUPPLEMENTAL RESTRAINTS SYSTEM TELEPHONE ANTENNA SPLITTER VIO WIRE W/ SOUND SYSTEM W/O SOUND SYSTEM WHT WIRE

BLK WIRE BLK/BRN WIRE BRN WIRE BRN/RED WIRE CAN B H CAN B L CAN H B CAN H H COMPUTER DATA LINES SYSTEM ELECTRIC PARKING BRAKE SWITCH ELECTRONIC STABILITY PROGRAM CONTROL UNIT ENGINE FUSE, RELAY MODULE FUSE 108 FUSE 110 GRN WIRE GRN/WHT WIRE GRY/BLU WIRE HOT AT ALL TIMES LEFT FRONT EXTERIOR LIGHTS LED ACTUATION MODULE LEFT FRONT LAMP UNIT LEFT HEADLAMP CONTROL UNIT OVERHEAD CONTROL PANEL CONTROL UNIT RED/BLU WIRE RED/YEL WIRE SW 1 SW 2 SW 3 SW 4 VIO WIRE VIO/WHT WIRE WHT/BLK WIRE WHT/YEL WIRE YEL WIRE

56 AL 56 BL 56 BR BLK WIRE BLU/BLK WIRE BLU/BRN WIRE BRN WIRE BRN/RED WIRE CAN B H CAN B L CAN B L RBA-1 CAN H H CAN H L CAN HMI L CAN-NMI H COC COMBINATION SWITCH COMPUTER DATA LINES SYSTEM CUTOUT RELAY ENERGIZED ELECTRIC PARKING BRAKE SWITCH ELECTRONIC STABILITY PROGRAM CONTROL UNIT ENGINE FUSE, RELAY MODULE EXTERIOR LIGHTS SWITCH FLEX RAY 1 BM FLEX RAY 1 BP FRONT FOG LAMP INDICATOR LAMP FRONT SAM CONTROL UNIT FUSE 128 FUSE 200 FUSE 208 FUSE 326 FUSE 329 GRN WIRE GRY/BLU WIRE GRY/ORG WIRE GRY/PNK WIRE GRY/WHT WIRE HEADLAMP FLASHER/ HIGH BEAM SWITCH HEADLAMP RANGE CONTROLLER HI BEAM HIGH BEAM INDICATOR LAMP HOT AT ALL TIMES HOT W/ HOT W/ ENGINE COMPARTMENT TERMINAL 15 RELAY ENERGIZED INSTRUMENT CLUSTER LDS SGN 1 LDS SGN 2 LDS SGN 3 LEFT FRONT LAMP UNIT LEFT FUSE, RELAY MODULE LEFT HEADLAMP RANGE ADJUSTMENT ACTUATOR MOTOR LOW BEAM LOW BEAM INDICATOR LAMP LWR LWR SIG MULTI-FUNCTION DISPLAY OVERHEAD CONTROL PANEL CONTROL UNIT PNK WIRE PNK/RED WIRE PWR-1 QUIESCENT CURRENT RAIN/LIGHT SENSOR W/ ADDITIONAL FUNCTIONS RBA-1 REAR FOG LAMP BUTTON REAR FOG LAMP INDICATOR LAMP RED WIRE RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE RIGHT A-PILLAR FUSE BOX RIGHT FRONT LAMP UNIT RIGHT HEADLAMP RANGE ADJUSTMENT ACTUATOR MOTOR STEERING COLUMN MODULE CONTROL UNIT SW 1 SW 2 SW 3 SW 4 TEL TFL VIO WIRE VIO/WHT WIRE YEL WIRE YEL/WHT WIRE

BRN WIRE BRN/RED WIRE CAMERA COVER CONTROL UNIT CAN B H CAN B L CAN B L RBA-1 CLIMATE CONTROL OPERATING UNIT CLIMATE CONTROL UNIT FRONT SAM CONTROL UNIT GRN WIRE GRN/WHT WIRE GRY/RED WIRE LEFT FRONT DOOR CONTROL UNIT LEFT INTERIOR CAN (CAN B) POTENTIAL DISTRIBUTOR ELECTRICAL CONNECTOR LEFT REAR DOOR CONTROL UNIT OVERHEAD CONTROL PANEL CONTROL UNIT PNK WIRE PNK/WHT WIRE REAR AIR CONDITIONING OPENING UNIT REAR SAM CONTROL UNIT RIGHT FRONT DOOR CONTROL UNIT RIGHT REAR DOOR CONTROL UNIT STATIONARY HEATER RADIO REMOTE CONTROL RECEIVER TAILGATE CONTROL UNIT TRUNK LID CONTROL UNIT VIO WIRE WHT WIRE YEL WIRE YEL/WHT WIRE

BLK WIRE BREAK DOWN ASSISTANCE BUTTON BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/RED WIRE CAN B H CAN B L COMPUTER DATA LINES SYSTEM EYE GLASS BOX ILLUMINATION FRONT DOME LAMP FRONT DOME LAMP BUTTON FRONT SAM CONTROL UNIT FUSE 312 FUSE 326 GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GRN/BRN WIRE GRN/GRY WIRE GRY WIRE HOT AT ALL TIMES HOT W/ QUIESCENT CURRENT CUTOUT RELAY ENERGIZED ILS LH ILS RH INTERIOR LAMP AUTOMATIC FUNCTION BUTTON INTERIOR PROTECTION SWITCH INTERIOR TEMPERATURE SENSOR W/ INTEGRATED FAN LEFT FRONT READING LAMP BUTTON LEFT MOUNTING CONSOLE INCIDENT ILLUMINATION LLS LH LLS RH MB INFO BUTTON ORG/ WIRE OVERHEAD CONTROL PANEL CONTROL UNIT RAIN/LIGHT SENSOR W/ ADDITIONAL FUNCTIONS RBA-1 REAR DOME LAMP BUTTON RED WIRE RED/BLK WIRE RED/BRN WIRE RED/GRN WIRE RED/WHT WIRE RIGHT A-PILLAR FUSE BOX RIGHT FRONT READING LAMP BUTTON RIGHT MOUNTING CONSOLE INCIDENT ILLUMINATION ROOF SWITCH S DL LH S DL RH S SL VL SOS BUTTON TOWING SENSOR BUTTON VIO WIRE YEL WIRE

ADAPTIVE DAMPING SYSTEM (ADS) CONTROL UNIT AIRMATIC CONTROL UNIT AUDIO/COMAND CONTROL PANEL AUDIO/COMAND DISPLAY BLK WIRE BOOSTER BLOWER ELECTRONIC BLOWER REGULATOR CONTROL UNIT) DRIVER SEAT CONTROL UNIT DRIVER SEAT CONTROL UNIT, DRIVER SEAT HEATER CONTROL UNIT DRIVER-SIDE INSTRUMENT PANEL BUTTON GROUP DRIVETRAIN CONTROL UNIT, ME-SFI (ME) CONTROL UNIT ELECTRIC BRAKE CONTROL ELECTRICAL CONNECTOR ENGINE SOUND CONTROL UNIT FROM FUSE 325 (DIAGRAM 6 OF 6) FROM VEHICLE INTERIOR PREFUSE BOX (DIAGRAM 1 OF 6) FRONT SAM CONTROL UNIT FRONT SEAT HEATER CONTROL UNIT, FRONT PASSENGER SEAT CONTROL UNIT FUSE 302 FUSE 303 FUSE 304 FUSE 305 FUSE 306 FUSE 308 FUSE 309 FUSE 310 FUSE 311 FUSE 312 FUSE 315 FUSE 316 FUSE 317 FUSE 318 FUSE 319 FUSE 320 FUSE 322 FUSE 323 FUSE 324 FUSE 325 FUSE 326 FUSE 327 FUSE 328 FUSE 329 FUSE 330 FUSE 331 FUSE 332 FUSE 333 FUSE 334 FUSE 336 FUSE 337 FUSE 338 FUSE 339 FUSE 340 FUSE 341 HEAD UNIT HEAD-UP DISPLAY INTELLIGENT SERVO MODULE FOR DIRECT SELECT LEFT FRONT REVERSIBLE EMERGENCY TENSIONING RETRACTOR LEFT REAR DOOR CONTROL UNIT, REAR CONTROL UNIT MONO MULTI-FUNCTION CAMERA MULTI-MEDIA CONNECTION UNIT OVERHEAD CONTROL PANEL CONTROL UNIT OVERHEAD CONTROL PANEL CONTROL UNIT, RAIN/LIGHT SENSOR W/ ADDITIONAL FUNCTIONS PANORAMIC SLIDING ROOF CONTROL MODULE PARKING SYSTEM CONTROL UNIT (IF EQUIPPED) RADAR SENSORS CONTROL UNIT REAR AIR CONDITIONING OPERATING UNIT RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/VIO WIRE RED/WHT WIRE RED/YEL WIRE RIGHT FRONT DOOR CONTROL UNIT RIGHT FRONT REVERSIBLE EMERGENCY TENSIONING RETRACTOR SLIDING ROOF CONTROL MODULE STATIONARY HEATER UNIT STEERING COLUMN MODULE CONTROL UNIT STEREO MULTI-FUNCTION CAMERA SUPPLEMENTAL RESTRAINT SYSTEM TIRE PRESSURE MONITOR CONTROL UNIT TO FUSE 324 (DIAGRAM 6 OF 6) TOUCHPAD W/ ACTIVE PARK ASSIST W/ AUTONOMOUS INTELLIGENT CRUISE CONTROL PLUS W/ PRE- SAFE