Mercedes-Benz GLS-class X166 (2015-2019) overhead control panel control unit Wiring diagrams

2.1L TURBO DIESEL 3.0L TURBO, 3.5L, 3.5L FLEX AIR QUALITY SENSOR BLU WIRE BLU/GRN WIRE BRN WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/RED WIRE BRN/WHT WIRE CAN B H CAN B L COMPUTER DATA LINES SYSTEM COOLANT TEMPERATURE GAUGE COOLANT TEMPERATURE WARNING LAMP GRN/BLU WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/YEL WIRE INSTRUMENT CLUSTER INTERIOR TEMPERATURE SENSOR W/ INTEGRATED FAN LEFT "B" PILLAR AIR DISTRIBUTION ACTUATOR MOTOR LEFT CENTER AIR OUTLET FLAP ACTUATOR MOTOR LEFT REAR FOOTWELL MAGNETIC CLUTCH NCA WIRE OVERHEAD CONTROL PANEL CONTROL UNIT PNK/WHT WIRE PTC HEATER BOOSTER (IF EQUIPPED) REAR AIR CONDITIONING EVAPORATOR SHUTOFF VALVE REAR AIR CONDITIONING EVAPORATOR TEMPERATURE SENSOR REAR AIR CONDITIONING HEAD AREA TEMPERATURE SENSOR REAR AIR DISTRIBUTION FLAP ACTUATOR MOTOR RED WIRE RED/WHT WIRE REGULATION VALVE RIGHT "B" PILLAR AIR DISTRIBUTION ACTUATOR MOTOR RIGHT CENTER AIR OUTLET FLAP ACTUATOR MOTOR SUN SENSOR VEHICLE INTERIOR HUMIDITY/ TEMPERATURE SENSOR VIO/BLK WIRE VIO/WHT WIRE WHT WIRE YEL WIRE YEL/BRN WIRE

AMBIENT LAMP AUTOMATIC DIMMING MIRROR BATTERY COMPARTMENT PREFUSE BOX BLU WIRE BRN WIRE BRN/RED WIRE CAN B H CAN B L COMPUTER DATA LINES SYSTEM FORWARD AUTOMATIC DIMMING MIRROR LIGHT SENSOR FUSE 253 FUSE 52 FUSE 53 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 GRY/YEL WIRE HANDS-FREE SYSTEM MICROPHONE GROUP HOT AT ALL TIMES INSIDE REAR VIEW MIRROR INSIDE REAR VIEW MIRROR DIMMING INTERIOR PREFUSE BOX LEFT FRONT DOOR CONTROL UNIT LEFT OUTSIDE MIRROR LEFT READING LAMP LL L LL R NAVIGATION, SOUND SYSTEMS NCA WIRE ORG/ WIRE OVERHEAD CONTROL PANEL CONTROL UNIT PNK WIRE RAIN/LIGHT SENSOR W/ ADDITIONAL FUNCTIONS RBA REARWARD AUTOMATIC DIMMING MIRROR LIGHT SENSOR RED/BLK WIRE RED/WHT WIRE RIGHT FRONT DOOR CONTROL UNIT RIGHT READING LAMP SAM CONTROL UNIT SIG YEL WIRE

AMBIENT LAMP BATTERY COMPARTMENT PREFUSE BOX BLK WIRE BLK/BLU WIRE BLK/WHT WIRE BLU WIRE BRN WIRE BRN/BLK WIRE BRN/RED WIRE BRN/WHT WIRE CAN B H CAN B L COMPUTER DATA LINES SYSTEM DRIVER SEAT CONTROL UNIT FRL V IP FRONT DOME LAMP SWITCH FUSE 127 FUSE 129 FUSE 135 FUSE 152 FUSE 250 FUSE 53 GARAGE DOOR OPENER GARAGE DOOR OPENER INDICATOR LAMP GLOVE BOX LAMP) GLOVE BOX LAMP/ SWITCH GRN WIRE GRN/WHT WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/WHT WIRE GRY/YEL WIRE HOT AT ALL TIMES HOT W/ CIRCUIT INSIDE REAR VIEW MIRROR INTERIOR LAMP AUTOMATIC FUNCTION SWITCH INTERIOR PREFUSE BOX IP 1 IP 2 LEFT FRONT MIRROR LAMP SWITCH LEFT FRONT READING LAMP SWITCH LEFT READING LAMP LEFT SUN VISOR MIRROR LAMP LL L LL R ORG/ WIRE OVERHEAD CONTROL PANEL CONTROL UNIT PNK WIRE PNK/BLK WIRE PNK/WHT WIRE REAR CONTROL UNIT REAR DOME LAMP (GLS-CLASS) REAR DOME LAMP, SWITCH REAR FUSE BOX RED/BLK WIRE RED/WHT WIRE RELAY ENERGIZED RIGHT FRONT MIRROR LAMP SWITCH RIGHT FRONT READING LAMP SWITCH RIGHT READING LAMP RIGHT REAR FOOTWELL LAMP RIGHT SUN VISOR MIRROR LAMP SAM CONTROL UNIT (RIGHT KICK PANEL) SIG TBBEL L TBBEL R VIO/BLK WIRE VIO/WHT WIRE W/ INTERIOR LIGHTS PACKAGE WHT WIRE WHT/BLK WIRE YEL WIRE

BACKUP LAMPS CIRCUIT BLK WIRE BLK/GRN WIRE BLK/WHT WIRE BLS H BLS L BLS M BLU WIRE BLU/BLK WIRE BLU/WHT WIRE BRN WIRE CAN H H CAN H L COMBINATION SWITCH COMPUTER DATA LINES SYSTEM ELECTRONIC STABILITY PROGRAM CONTROL UNIT ENGINE COMPARTMENT FUSE, RELAY MODULE ENGINE COMPARTMENT PREFUSE BOX FUSE 1 FUSE 211 GRN WIRE GRN/BLK WIRE GRN/WHT WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/YEL WIRE HOT AT ALL TIMES INNER RIGHT REAR LAMP UNIT OUTER TURN SIGNAL LAMP OVERHEAD CONTROL PANEL CONTROL UNIT PNK/BLK WIRE RAIN/LIGHT SENSOR (TOP CENTER OF WINDSHIELD) RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE RIGHT BACKUP LAMP RIGHT FRONT LAMP UNIT (W/ LED HEADLAMP) RIGHT FRONT LAMP UNIT (W/O LED HEADLAMP) RIGHT FRONT SIDE MARKER LAMP RIGHT HEADLAMP CONTROL UNIT RIGHT INSIDE TAILLIGHT RIGHT LED SIGNALING LIGHTS ACTUATION FAN MOTOR MODULE RIGHT PARKING LIGHT, STANDING LIGHT, DAYTIME RUNNING LIGHT STEERING COLUMN MODULE CONTROL UNIT STOP LAMP SWITCH (TOP OF BRAKE PEDAL ASSEMBLY) TURN SIGNAL LAMPS SWITCH VIO WIRE VIO/BLK WIRE VIO/WHT WIRE WHT/BLU WIRE

BLU WIRE BRN WIRE COMBINATION SWITCH COMPUTER DATA LINES SYSTEM GRN WIRE GRN/WHT WIRE GRY/YEL WIRE HEADLAMP FLASHER/ HIGH BEAM SWITCH LOW BEAM SWITCH OVERHEAD CONTROL PANEL CONTROL UNIT RAIN/LIGHT SENSOR W/ ADDITIONAL FUNCTIONS RED/BLK WIRE RED/WHT WIRE RIGHT ACTIVE CURVE ILLUMINATION ACTUATOR MOTOR RIGHT ACTIVE CURVE ILLUMINATION POSITION SENSOR RIGHT FRONT EXTERIOR LIGHTS LED ACTUATION MODULE RIGHT FRONT LAMP UNIT RIGHT HEADLAMP CONTROL UNIT RIGHT HEADLAMP RANGE ADJUSTMENT ACTUATOR MOTOR RIGHT HIGH BEAM, LOW BEAM (LONG RANGE) RIGHT LED DRIVING LIGHTS ACTUATION MODULE FAN MOTOR RIGHT LIGHT DISTRIBUTION ACTUATOR MOTOR RIGHT LIGHT DISTRIBUTION POSITION SENSOR RIGHT LOW BEAM (SHORT RANGE) STEERING COLUMN MODULE CONTROL UNIT YEL WIRE YEL/BLK WIRE

BLK WIRE BLK/BLU WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BLU/WHT WIRE BRN WIRE BRN/RED WIRE CAN B H CAN B L CAN B L IP COMBINATION SWITCH COMPUTER DATA LINES SYSTEM ENGINE COMPARTMENT FUSE, RELAY MODULE EXTERIOR LIGHTS SWITCH FUSE 114 FUSE 229 FUSE 231 FUSE 250 GRN WIRE GRN/BLK WIRE GRN/WHT WIRE GRY/BLU WIRE GRY/WHT WIRE GRY/YEL WIRE HEAD LAMP RANGE CONTROLLER HEADLAMP FLASHER/ HIGH BEAM SWITCH HIGH BEAM INDICATOR LAMP HOT AT ALL TIMES HOT W/ CIRCUIT 15 RELAY ENERGIZED INSTRUMENT CLUSTER INTERIOR PREFUSE BOX LDS 1 LDS 2 LDS 3 LEFT FRONT LAMP UNIT LEFT HEADLAMP RANGE ADJUSTMENT ACTUATOR MOTOR LEFT HIGH BEAM LEFT LOW BEAM LOW BEAM INDICATOR LAMP LOW BEAM SWITCH LWR OVERHEAD CONTROL PANEL CONTROL UNIT RAIN/LIGHT SENSOR W/ ADDITIONAL FUNCTIONS REAR FOG LIGHT BUTTON REAR FUSE BOX RED/BLK WIRE RED/WHT WIRE RIGHT FRONT LAMP UNIT RIGHT HEADLAMP RANGE ADJUSTMENT ACTUATOR MOTOR RIGHT HIGH BEAM RIGHT LOW BEAM SAM CONTROL UNIT (RIGHT KICK PANEL) STEERING COLUMN MODULE CONTROL UNIT SWITCH ILLUMINATION WHT/BLK WIRE YEL WIRE YEL/BLK WIRE YEL/WHT WIRE

ANTI-THEFT ALARM SYSTEM/EMERGENCY CALL SYSTEM BUTTON GROUP BLK/BLU WIRE BLU WIRE BLU/BLK WIRE BLU/WHT WIRE BRN WIRE BRN/RED WIRE CAN B H CAN B L COMBINATION SWITCH COMPUTER DATA LINES SYSTEM DIGITAL TACHOGRAPH CONTROL UNIT EXTERIOR LIGHTS SWITCH FRONT CENTER CONSOLE CUPHOLDER ILLUMINATION FRONT CENTER CONSOLE ILLUMINATION FRONT CIGARETTE LIGHTER W/ ASHTRAY ILLUMINATION FUSE 114 FUSE 152 FUSE 20 FUSE 250 GRN WIRE GRN/WHT WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/WHT WIRE GRY/YEL WIRE HEADLAMP FLASHER/ HIGH BEAM SWITCH HOT AT ALL TIMES HOT W/ CIRCUIT HOT W/ CIRCUIT 15 RELAY ENERGIZED INTERIOR PREFUSE BOX LDS 1 LDS 2 LDS 3 LIFTGATE CONTROL BUTTON SYMBOL ILLUMINATION NCA WIRE OVERHEAD CONTROL PANEL CONTROL UNIT REAR CONTROL UNIT REAR FUSE BOX RED WIRE RED/BLK WIRE RED/WHT WIRE SAM CONTROL UNIT (RIGHT KICK PANEL) STEERING COLUMN MODULE CONTROL UNIT SWITCH ILLUMINATION TAILGATE CONTROL BUTTON W/ INTERIOR LIGHTS PACKAGE WHT WIRE WHT/YEL WIRE

AC HOUSING, AIRMATIC CONTROL UNIT ALTERNATOR AMPLIFIER CONTROL UNIT ATA (EDW)/ TOWING SENSOR/ INTERIOR MOTION SENSOR CONTROL UNIT AUDIO/ COMAND CONTROL PANEL, TOUCHPAD, SAM CONTROL UNIT BATTERY COMPARTMENT PREFUSE BOX BATTERY SENSOR BLK WIRE BLU WIRE CONTROL UNIT) CONTROL UNIT, TELEMATICS SERVICES COMMUNICATION MODULE DIGITAL TACHOGRAPH CONTROL UNIT ECO START/STOP FUNCTION DIODE ELECTRIC PARKING BRAKE CONTROL UNIT ELECTRICAL POWER STEERING CONTROL UNIT ELECTRONIC STABILITY PROGRAM CONTROL UNIT EMERGENCY CALL SYSTEM ENGINE COMPARTMENT PREFUSE BOX FAN MOTOR FULLY INTEGRATED TRANSMISSION CONTROL UNIT FUSE 1 FUSE 2 FUSE 250 FUSE 251 FUSE 252 FUSE 253 FUSE 254 FUSE 255 FUSE 256 FUSE 257 FUSE 3 FUSE 30 FUSE 31 FUSE 32 FUSE 33 FUSE 34 FUSE 35 FUSE 36 FUSE 38 FUSE 4 FUSE 40 FUSE 41 FUSE 42 FUSE 45 FUSE 47 FUSE 48 FUSE 49 FUSE 5 FUSE 50 FUSE 51 FUSE 52 FUSE 53 FUSE 54 FUSE 55 FUSE 56 FUSE 57 FUSE 58 FUSE 59 FUSE 6 FUSE 60 FUSE 61 FUSE 62 FUSE 63 FUSE 65 FUSE 66 FUSE 67 FUSE 68 FUSE 7 FUSE 8 GRN WIRE HERMES CONTROL UNIT (W/ HERMES UMTS, LTE) KEYLESS-GO CONTROL UNIT LEFT FRONT DOOR CONTROL UNIT LEFT FRONT REVERSIBLE EMERGENCY TENSIONING RETRACTOR LEFT REAR DOOR CONTROL UNIT LOWER CONTROL PANEL CONTROL UNIT MULTIPLE FUSE 1 N/A NCA WIRE OFF-ROAD OPERATING PANEL CONTROL UNIT ON-BOARD ELECTRICAL SYSTEM BATTERY OVERHEAD CONTROL PANEL CONTROL UNIT PANORAMIC SLIDING ROOF CONTROL MODULE PARKING SYSTEM PTC HEATER BOOSTER PYRO FUSE N/A REAR AIR CONDITIONING ELECTRONIC BLOWER CONTROLLER REAR CONTROL UNIT RED WIRE RIGHT FRONT DOOR CONTROL UNIT RIGHT FRONT REVERSIBLE EMERGENCY TENSIONING RETRACTOR RIGHT REAR DOOR CONTROL UNIT SAM CONTROL UNIT SLIDING ROOF CONTROL MODULE SOUND SYSTEM STARTER SUPPLEMENTAL RESTRAINT SYSTEM TO COCKPIT CIRCUIT 30 FUSE BOX (DIAGRAM 2 OF 4) TO ENGINE COMPARTMENT FUSE, RELAY MODULE (DIAGRAM 2 OF 4) TO ENGINE COMPARTMENT FUSE, RELAY MODULE (DIAGRAM 3 OF 4) TO MULTIPLE FUSE 2 (DIAGRAM 3 OF 4) TO REAR FUSE BOX (DIAGRAM 3 OF 4) TO REAR FUSE BOX (DIAGRAM 4 OF 4) TRANSFER CASE CONTROL UNIT TRANSMISSION MODES CONTROL PANEL VIO WIRE VOLTAGE DIP LIMITER VOLTAGE DIP PROTECTION) W/ LIVE TRAFFIC INFORMATION W/ SOUND SYSTEM W/ START/ STOP W/O ECO START/ STOP FUNCTION WHT WIRE

BATTERY COMPARTMENT PREFUSE BOX BLK WIRE BRN WIRE BRN/RED WIRE CAN B H CAN B L COMPUTER DATA LINES SYSTEM FUSE 53 FUSE 60 FUSE 63 GRY/YEL WIRE HOT AT ALL TIMES OVERHEAD CONTROL PANEL CONTROL UNIT RED WIRE RED/BLK WIRE RED/WHT WIRE RELAY ENERGIZED SAM CONTROL UNIT SLIDING ROOF CONTROL MODULE SLIDING ROOF HALL SENSOR 1 SLIDING ROOF HALL SENSOR 2 SLIDING ROOF MOTOR SLIDING ROOF SWITCH WHT WIRE

ANTI-THEFT ALARM SYSTEM/ EMERGENCY CALL SYSTEM BUTTON GROUP BATTERY COMPARTMENT PREFUSE BOX BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLK/RED WIRE BLK/WHT WIRE BLU WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/RED WIRE BUTTON CAN B H CAN B H RBA CAN B L COMPUTER DATA LINES COMPUTER DATA LINES SYSTEM DRIVER DOOR FULLY ELECTRIC TRAILER HITCH SWITCH ELECTRIC BRAKE CONTROL ELECTRICAL CONNECTOR FUSE 115 FUSE 124 FUSE 125 FUSE 128 FUSE 130 FUSE 53 GRY/BLU WIRE GRY/RED WIRE GRY/YEL WIRE HOT AT ALL TIMES HOT W/ CIRCUIT 15 RELAY ENERGIZED LED LED RD(-) LED WH(-) LEFT FRONT DOOR CONTROL UNIT LIN B 13 OVERHEAD CONTROL PANEL CONTROL UNIT REAR FUSE BOX RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE RFL (+) SAM CONTROL UNIT SIG SYSTEM TD SIG TD ST TOWING SENSOR BUTTON TRAILER RECOGNITION CONTROL UNIT TRAILER SOCKET (7-PIN) (CENTER OF REAR BUMPER) TRUNK LID/LIFTGATE FULLY ELECTRIC TRAILER HITCH SWITCH WHT WIRE WHT/BLK WIRE YEL/RED WIRE