Mercedes-Benz GLS-class X166 (2015-2019) left front door control unit Wiring diagrams

BLK WIRE BLK/WHT WIRE BLU/BLK 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 DRIVER SEAT FORE/AFT ADJUSTMENT MOTOR, HALL SENSOR DRIVER SEAT HEIGHT ADJUSTMENT MOTOR, HALL SENSOR DRIVER SEAT INCLINATION ADJUSTMENT MOTOR, HALL SENSOR FUSE 253 GRN WIRE GRN/BLU WIRE GRY WIRE GRY/BLK WIRE GRY/YEL WIRE HOT AT ALL TIMES HV HS SIG HV MOT+ INTERIOR PREFUSE BOX LEFT FRONT DOOR CONTROL UNIT LEFT FRONT HEAD RESTRAINT ADJUSTMENT SWITCH LEFT FRONT MEMORY 1 SWITCH LEFT FRONT MEMORY 2 SWITCH LEFT FRONT MEMORY 3 SWITCH LEFT FRONT MEMORY FUNCTION SWITCH LEFT FRONT SEAT ADJUSTMENT SWITCH GROUP LV HS SIG LV MOT+ NV HS SIG NV MOT+ ORG/ WIRE RBA RED/BLU WIRE RED/WHT WIRE SEATS SYSTEM STEERING COLUMN IN/OUT ADJUSTMENT MOTOR, HALL SENSOR STEERING COLUMN UP/DOWN ADJUSTMENT MOTOR, HALL SENSOR VIO WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE YEL WIRE

49 L 49 R 57 L 57 R 58 L 58 R AMBIENT LAMP BACKUP LAMPS CIRCUIT BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BLU/WHT WIRE BRN WIRE BRN/BLK WIRE BRN/RED WIRE BSL L BSL R CAN B H CAN B H RBA CAN B L CENTER STOP LAMP COCKPIT CIRCUIT 30 FUSE BOX COMPUTER DATA LINES SYSTEM D BL HL D BL HR DISPLAY EXTERIOR LIGHTS SWITCH FUSE 114 FUSE 15 FUSE 250 GRN/BLK WIRE GRN/WHT WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE HAZARD WARNING SYSTEM BUTTON HEADLAMP RANGE CONTROLLER HOT AT ALL TIMES HOT W/ CIRCUIT 15 RELAY ENERGIZED INNER LEFT REAR LAMP UNIT INSTRUMENT CLUSTER INTERIOR PREFUSE BOX KZL L KZL R LDS 1 LDS 2 LDS 3 LEFT BACKUP LAMP LEFT FRONT DOOR CONTROL UNIT LEFT INSIDE TAILLIGHT LEFT LIFTGATE LICENSE PLATE LAMP LEFT OUTSIDE MIRROR LEFT REAR FOG LAMP LEFT REAR LAMP UNIT LEFT REAR TURN SIGNAL LAMP LEFT STOP LAMP LEFT TURN SIGNAL IND LWR NCA WIRE NSI L ORG/ WIRE OUTER LEFT TAILLIGHT REAR FOG LAMP IND REAR FOG LIGHT BUTTON REAR FUSE BOX RED/BLU WIRE RED/WHT WIRE RIGHT LIFTGATE LICENSE PLATE LAMP RIGHT TURN SIGNAL IND SAM CONTROL UNIT (RIGHT KICK PANEL) SL L SWITCH ILLUMINATION TURN SIGNAL LAMP UPPER CONTROL PANEL CONTROL UNIT VIO/BLK WIRE VIO/WHT WIRE W/ HALOGEN HEADLAMPS WHT WIRE WHT/BLU WIRE

AUTOMATIC TRANSMISSION MODE BUTTON BATTERY COMPARTMENT PREFUSE BOX BRN WIRE BRN/RED WIRE BRN/WHT WIRE CAN B H CAN B L CAN B L RBA COMPUTER DATA LINES SYSTEM DRIVER TRUNK LID/ LIFTGATE CONTROL BUTTON ELECTRICAL PARKING BRAKE SWITCH FUSE 2 FUSE 253 FUSE 254 FUSE 52 FUSE 57 GLE CLASS GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/WHT WIRE HOT AT ALL TIMES INTERIOR PREFUSE BOX LEFT CENTER AIR OUTLET SYMBOL ILLUMINATION LEFT FRONT DOOR CENTRAL LOCKING INTERIOR SWITCH LEFT FRONT DOOR CONTROL UNIT LEFT FRONT SIDE AIR OUTLET SYMBOL ILLUMINATION LEFT REAR DOOR CONTROL UNIT LEFT REAR POWER WINDOW SWITCH LOWER CONTROL PANEL CONTROL UNIT MULTIPLE FUSE 1 NCA WIRE PASSENGER-SIDE POWER WINDOW SWITCH RBA RED/BLK WIRE RED/WHT WIRE RIGHT CENTER AIR OUTLET SYMBOL ILLUMINATION RIGHT FRONT DOOR CENTRAL LOCKING INTERIOR SWITCH RIGHT FRONT DOOR CONTROL UNIT RIGHT FRONT SIDE AIR OUTLET SYMBOL ILLUMINATION RIGHT REAR DOOR CONTROL UNIT RIGHT REAR POWER WINDOW SWITCH SIG W/ INTERIOR LIGHTS PACKAGE

AUTOMATIC DIMMING MIRROR BATTERY COMPARTMENT PREFUSE BOX BLK WIRE BRN WIRE BRN/RED WIRE CAN B H CAN B L RBA COMPUTER DATA LINES SYSTEM DRIVER-SIDE POWER WINDOW, OUTSIDE MIRROR ADJUSTMENT SWITCH GROUP FUSE 253 FUSE 52 GRY/BLK WIRE GRY/YEL WIRE HORIZONTAL INCLINATION ADJUSTMENT ACTUATOR MOTOR HORIZONTAL INCLINATION ADJUSTMENT POTENTIOMETER HOT AT ALL TIMES INTERIOR PREFUSE BOX LED LED 31 LEFT BLIND SPOT ASSIST READINESS, WARNING INDICATOR LEFT FRONT DOOR CONTROL UNIT LEFT FRONT MEMORY 1 SWITCH LEFT FRONT MEMORY 3 SWITCH LEFT FRONT MEMORY FUNCTION SWITCH LEFT FRONT MEMORY 2 SWITCH LEFT FRONT SEAT ADJUSTMENT SWITCH GROUP LEFT OUTSIDE MIRROR LEFT OUTSIDE MIRROR ADJUSTMENT SWITCH LEFT OUTSIDE MIRROR AMBIENT LAMP LEFT OUTSIDE MIRROR TURN SIGNAL LAMP MIRROR HEATER NCA WIRE OUTSIDE MIRROR ADJUSTMENT SWITCH OUTSIDE MIRROR FOLD-IN/FOLD-OUT ELECTRIC MOTOR OUTSIDE MIRROR FOLD-IN/FOLD-OUT SWITCH RED/BLU WIRE RED/WHT WIRE RIGHT BLIND SPOT ASSIST READINESS, WARNING INDICATOR RIGHT FRONT DOOR CONTROL UNIT RIGHT FRONT MEMORY 1 SWITCH RIGHT FRONT MEMORY 2 SWITCH RIGHT FRONT MEMORY 3 SWITCH RIGHT FRONT MEMORY FUNCTION SWITCH RIGHT FRONT SEAT ADJUSTMENT SWITCH GROUP RIGHT OUTSIDE MIRROR RIGHT OUTSIDE MIRROR ADJUSTMENT SWITCH RIGHT OUTSIDE MIRROR AMBIENT LAMP RIGHT OUTSIDE MIRROR TURN SIGNAL LAMP SH(+) 61 SH(-) 31 SIG VERTICAL INCLINATION ADJUSTMENT ACTUATOR MOTOR VERTICAL INCLINATION ADJUSTMENT POTENTIOMETER

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

15 RELAY (DIAGRAM 4 OF 4) 2.1L TURBO DIESEL EXCEPT 2.1L TURBO DIESEL ACTIVE ROLL STABILIZATION CONTROL UNIT ADDITIONAL BATTERY BLK WIRE BLU WIRE BLU/GRY WIRE BOOSTER BLOWER ELECTRONIC BLOWER CONTROLLER BRN WIRE BRN/BLK WIRE BRN/RED WIRE BUFFER BATTERY FUSE CAN B H CAN B L CAN-D H CAN-D L COCKPIT CIRCUIT 30 FUSE BOX COMPUTER DATA LINES SYSTEM CONTROL UNIT) DC/AC CONVERTER CONTROL UNIT DIAGNOSTIC CONNECTOR ECO START/STOP FUNCTION ADDITIONAL BATTERY ECO START/STOP FUNCTION ADDITIONAL BATTERY RELAY ELECTRONIC IGNITION SWITCH CONTROL UNIT ENGINE COMPARTMENT FUSE, RELAY MODULE FROM BATTERY COMPARTMENT PREFUSE BOX (DIAGRAM 1 OF 4) FROM CIRCUIT FROM CIRCUIT 15 RELAY (DIAGRAM 4 OF 4) FROM REAR FUSE BOX (DIAGRAM 4 OF 4) FRONT PASSENGER SEAT OCCUPIED RECOGNITION, ACSR FULLY INTEGRATED TRANSMISSION CONTROL UNIT FUSE 10 FUSE 11 FUSE 12 FUSE 13 FUSE 134 FUSE 135 FUSE 136 FUSE 137 FUSE 138 FUSE 14 FUSE 15 FUSE 157 FUSE 16 FUSE 17 FUSE 18 FUSE 213 GLE CLASS GLOVE BOX LAMP) GRN WIRE GRN/BLU WIRE GRN/WHT WIRE GRY WIRE GRY/WHT WIRE INTELLIGENT SERVO MODULE FOR DIRECT SELECT LEFT FRONT DOOR CONTROL UNIT N/A NCA WIRE NOT P ORG/BLK WIRE ORG/BLU WIRE PNK WIRE RBA REAR WINDOW WIPER RELAY RED WIRE RED/WHT WIRE RETROFIT HEAD UP DISPLAY, INSTRUMENT CLUSTER SAM CONTROL UNIT SOCKET MICRO SWITCH STEERING COLUMN MODULE CONTROL UNIT SUPPLEMENTAL RESTRAINT SYSTEM TAILGATE WIPER MOTOR TK FT TO REAR FUSE BOX (DIAGRAM 4 OF 4) UPPER CONTROL PANEL CONTROL UNIT W/ AUTOMATIC AIR CONDITIONING W/ ECO START/STOP FUNCTION W/O ECO START/STOP FUNCTION 9 SPEED A/T 6 SPEED A/T 6 WEIGHT SENSING SYSTEM (WSS) CONTROL UNIT WHT WIRE YEL WIRE YEL/WHT WIRE

BLK WIRE BLK/WHT WIRE BRN WIRE BRN/BLK WIRE BRN/RED WIRE BRN/WHT WIRE CAN B H CAN B L CAN B L CAN B H COMPUTER DATA LINES SYSTEM DRIVER SEAT BACKREST INCLINATION ADJUSTMENT MOTOR DRIVER SEAT CONTROL UNIT DRIVER SEAT FORE/AFT ADJUSTMENT MOTOR DRIVER SEAT HEIGHT ADJUSTMENT MOTOR DRIVER SEAT INCLINATION ADJUSTMENT MOTOR FRONT PASSENGER SEAT BACKREST INCLINATION ADJUSTMENT MOTOR FRONT PASSENGER SEAT CONTROL UNIT FRONT PASSENGER SEAT FORE/AFT ADJUSTMENT MOTOR FRONT PASSENGER SEAT HEIGHT ADJUSTMENT MOTOR FRONT PASSENGER SEAT INCLINATION ADJUSTMENT MOTOR FUSE 102 FUSE 103 FUSE 127 FUSE 129 GRY WIRE GRY/BLK WIRE GRY/WHT WIRE GRY/YEL WIRE HOT AT ALL TIMES HOT W/ CIRCUIT HV MOT (+) HV MOT (-) HV MOT+ L MOT (+) L MOT (-) L MOT (-) LEFT FRONT DOOR CONTROL UNIT LEFT FRONT SEAT ADJUSTMENT SWITCH GROUP LEFT FRONT SEAT BACKREST ADJUSTMENT SWITCH LEFT FRONT SEAT FORE/AFT ADJUSTMENT SWITCH LEFT FRONT SEAT HEIGHT ADJUSTMENT SWITCH LEFT FRONT SEAT INCLINATION ADJUSTMENT SWITCH LV MOT (+) LV MOT (-) LV MOT+ NCA WIRE NV MOT (+) NV MOT (-) NV MOT+ RBA REAR FUSE BOX RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE RIGHT FRONT DOOR CONTROL UNIT RIGHT FRONT SEAT ADJUSTMENT SWITCH GROUP RIGHT FRONT SEAT BACKREST ADJUSTMENT SWITCH RIGHT FRONT SEAT FORE/AFT ADJUSTMENT SWITCH RIGHT FRONT SEAT HEIGHT ADJUSTMENT SWITCH RIGHT FRONT SEAT INCLINATION ADJUSTMENT SWITCH SAM CONTROL UNIT (RIGHT KICK PANEL)

AFS (-) AFS-OPEN AFS-CLOSE BATTERY COMPARTMENT PREFUSE BOX BLK WIRE BLU WIRE BLU/BLK WIRE BLU/WHT WIRE BRN WIRE BRN/RED WIRE CAN B H CAN B H RBA CAN B L COMPUTER DATA LINES SYSTEM DRIVER-SIDE POWER WINDOW, OUTSIDE MIRROR ADJUSTMENT SWITCH GROUP FH H FH T FUSE 152 FUSE 253 FUSE 254 FUSE 52 FUSE 57 GLE CLASS GRN WIRE GRN/BLK WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/WHT WIRE H (+) HS 1 H (-) HOT AT ALL TIMES HS (+) FH T HS(+) INTERIOR PREFUSE BOX LEFT FRONT DOOR CONTROL UNIT LEFT FRONT DOOR POWER WINDOW MOTOR LEFT FRONT POWER WINDOW SWITCH LEFT POP-OUT WINDOW ANTI-PINCH PROTECTION CONTACT STRIP LEFT REAR DOOR CONTROL UNIT LEFT REAR DOOR POWER WINDOW MOTOR LEFT REAR POWER WINDOW SWITCH LEFT VENT WINDOW MOTOR NCA WIRE OUT PASSENGER-SIDE POWER WINDOW SWITCH RBA REAR CONTROL UNIT REAR FUSE BOX REAR SIDE WINDOW CHILD SAFETY LOCK SWITCH RED WIRE RED/WHT WIRE RIGHT FRONT DOOR CONTROL UNIT RIGHT FRONT DOOR POWER WINDOW MOTOR RIGHT FRONT POWER WINDOW SWITCH RIGHT POP-OUT WINDOW ANTI-PINCH PROTECTION CONTACT STRIP RIGHT REAR DOOR CONTROL UNIT RIGHT REAR DOOR POWER WINDOW MOTOR RIGHT REAR POWER WINDOW SWITCH RIGHT VENT WINDOW MOTOR SIG VENT WINDOW SWITCH WHT WIRE

BLK WIRE BRN WIRE BRN/RED WIRE CAN B H CAN B H RBA CAN B L COMPUTER DATA LINES SYSTEM DRIVER SEAT CONTROL UNIT FUSE 102 FUSE 127 FUSE 20 FUSE 253 GRN WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE HOT AT ALL TIMES HOT W/ CIRCUIT HS SIG HS(+) INTERIOR PREFUSE BOX LEFT FRONT DOOR CONTROL UNIT LEFT FRONT MEMORY 1 SWITCH LEFT FRONT MEMORY 2 SWITCH LEFT FRONT MEMORY 3 SWITCH LEFT FRONT MEMORY FUNCTION SWITCH LEFT FRONT SEAT ADJUSTMENT SWITCH GROUP MLS H MLS V ORG/ WIRE REAR FUSE BOX RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE STEERING COLUMN ADJUSTMENT SWITCH STEERING COLUMN ADJUSTMENT, STEERING WHEEL HEATER SWITCH STEERING COLUMN IN/OUT ADJUSTMENT MOTOR, HALL SENSOR STEERING COLUMN MODULE CONTROL UNIT STEERING COLUMN UP/DOWN ADJUSTMENT MOTOR, HALL SENSOR VIO WIRE 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