Mercedes-Benz GLS-class X166 (2015-2019) computer data lines system Wiring diagrams

2.1L TURBO DIESEL 2.1L TURBO DIESEL 6 3.0L TURBO, 4.7L TURBO 3.5L, 3.5L FLEX EXCEPT 2.1L TURBO DIESEL 4.7L TURBO 2.1L TURBO DIESEL 3.0L TURBO BATTERY COMPARTMENT PREFUSE BOX BLK WIRE BLK/BLU WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/WHT WIRE BRN WIRE BRN/GRY WIRE BRN/RED WIRE CHARGE AIR COOLER CIRCULATION PUMP CHARGE AIR TEMPERATURE SENSOR COMPUTER DATA LINES SYSTEM COOLANT LEVEL SWITCH (IN COOLANT RESERVOIR) COOLANT TEMPERATURE SENSOR ENGINE COMPARTMENT FUSE, RELAY MODULE ENGINE COMPARTMENT PREFUSE BOX ENGINE CONTROLS SYSTEM FAN MOTOR (BEHIND RADIATOR) FUSE 215 FUSE 216 FUSE 219 FUSE 257 FUSE 32 FUSE 53 FUSE 6 GRN WIRE GRN/BLU WIRE GRN/WHT WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/YEL WIRE HOT AT ALL TIMES HOT W/ CIRCUIT HOT W/ TURBO CHARGER RELAY ENERGIZED INTERIOR PREFUSE BOX INTERIOR TEMPERATURE SENSOR W/ INTEGRATED FAN LEFT FOOTWELL AIR OUTLET TEMPERATURE SENSOR LEFT FRONT SIDE AIR OUTLET SYMBOL ILLUMINATION LEFT REAR FOOTWELL LEFT SIDE AIR OUTLET TEMPERATURE SENSOR LUES ME-SFI CONTROL UNIT NCA WIRE OUTSIDE TEMPERATURE SENSOR OVERHEAD CONTROL PANEL ELECTRONICS PNK WIRE PNK/BLK WIRE PNK/BLU WIRE REAR AIR DISTRIBUTION FLAP ACTUATOR MOTOR REAR AIR DUCT AIR OUTLET TEMPERATURE SENSOR RED WIRE RED/BLK WIRE RED/BLU WIRE RIGHT CENTER AIR OUTLET SYMBOL ILLUMINATION RIGHT FOOTWELL AIR OUTLET TEMPERATURE SENSOR RIGHT FRONT SIDE AIR OUTLET SYMBOL ILLUMINATION RIGHT SIDE AIR OUTLET TEMPERATURE SENSOR SAM CONTROL UNIT SUN SENSOR TSLL SIG EA-TANS TMOT UHI VEHICLE INTERIOR HUMIDITY/ TEMPERATURE SENSOR VIO WIRE VIO/BLK WIRE WHT WIRE YEL WIRE YEL/BRN WIRE YEL/WHT WIRE

BATTERY COMPARTMENT PREFUSE BOX BLU WIRE BLU/WHT WIRE BRN WIRE BRN/RED WIRE CAN B H CAN B L CAN C H CAN C L COMPUTER DATA LINES SYSTEM FULLY INTEGRATED TRANSMISSION CONTROL UNIT FUSE 5 GLS CLASS GLE CLASS HOT W/ CIRCUIT INNER LEFT REAR LAMP UNIT INNER RIGHT REAR LAMP UNIT LEFT BACKUP LAMP LEFT REAR LAMP UNIT MULTIPLE FUSE 1 RED/BLK WIRE RFL L RFL R RIGHT BACKUP LAMP RIGHT REAR LAMP UNIT SAM CONTROL UNIT (RIGHT KICK PANEL) WHT WIRE WHT/BLU WIRE

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

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

30-R AMBIENT LAMP BACKUP LAMPS CIRCUIT BATTERY COMPARTMENT PREFUSE BOX BLK/WHT WIRE BLU/BLK WIRE BRN WIRE BRN/RED WIRE CAN B H RBA CAN B L COMPUTER DATA LINES SYSTEM CONTROL UNIT) ELECTRIC PARKING BRAKE ELECTRIC PARKING BRAKE SWITCH FUSE 67 GRN WIRE GRN/BLK WIRE GRN/WHT WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/RED WIRE HOT AT ALL TIMES LEFT FRONT LAMP UNIT (W/ LED HEADLAMP) LEFT FRONT LAMP UNIT (W/O LED HEADLAMP) LEFT FRONT SIDE MARKER LAMP LEFT HEADLAMP CONTROL UNIT LEFT LED SIGNALING LIGHTS ACTUATION MODULE FAN MOTOR LEFT PARKING LIGHT, STANDING LIGHT, DAYTIME RUNNING LIGHT NCA WIRE OUTER RIGHT TAILLIGHT OUTER TURN SIGNAL LAMP RED/BLU WIRE RED/WHT WIRE RIGHT BACKUP LAMP RIGHT FRONT DOOR CONTROL MODULE RIGHT OUTSIDE MIRROR RIGHT REAR LAMP UNIT RIGHT REAR TURN SIGNAL LAMP RIGHT STOP LAMP SW 1 SW 2 SW 3 SW 4 TURN SIGNAL LAMP VIO/BLK WIRE WHT/BLU WIRE

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

BATTERY COMPARTMENT PREFUSE BOX 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 FDS L (-) FFRBEL FRL HR FRONT PASSENGER MASSAGE FUNCTION CONTROL UNIT FRONT PASSENGER MULTICONTOUR SEAT CONTROL UNIT FRONT PASSENGER SEAT BACKREST INCLINATION ADJUSTMENT MOTOR, HALL SENSOR FRONT PASSENGER SEAT CONTROL UNIT FRONT PASSENGER SEAT HEAD RESTRAINT ADJUSTMENT MOTOR, HALL SENSOR FRONT PASSENGER SEAT LUMBAR SUPPORT ADJUSTMENT CONTROL UNIT FRONT PASSENGER SEAT LUMBAR SUPPORT ADJUSTMENT SWITCH FRONT PASSENGER SEAT LUMBAR SUPPORT PNEUMATIC PUMP FUSE 103 FUSE 129 FUSE 52 GRN/BLK WIRE GRN/BLU WIRE GRN/WHT WIRE GRY WIRE HOT AT ALL TIMES HOT W/ CIRCUIT K MOT KS HS SIG L HS (-) L HS SIG L MOT (-) NCA WIRE PNK WIRE PWM REAR FUSE BOX RED WIRE RED/BLK WIRE RED/WHT WIRE RIGHT FRONT MULTICONTOUR SEAT PNEUMATIC PUMP SEATS SYSTEM SIG VIO WIRE W/ MASSAGE FUNCTION W/O MASSAGE FUNCTION WHT WIRE YEL 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

1 2 CAN B L 9 8 SIG BLK WIRE BLU WIRE BLU/BLK WIRE BRN WIRE BRN/RED WIRE BRN/WHT WIRE CAN B H CAN B L CLOSE CLOSE, LOCK COMPUTER DATA LINES SYSTEM DRIVE TRUNK LID/LIFTGATE CONTROL BUTTON FUSE 106 FUSE 152 FUSE 154 FUSE 253 GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GRN/BRN WIRE GRN/WHT WIRE GRY WIRE GRY/BLU WIRE GRY/WHT WIRE HOT AT ALL TIMES HOT W/ CIRCUIT INTERIOR PREFUSE BOX LEFT FRONT DOOR CONTROL UNIT LIFTGATE LOCKING PAWL SWITCH MOT CLOSE MOT OPEN ORG/ WIRE OUT RBA REAR CONTROL UNIT REAR FUSE BOX RED WIRE RED/BLK WIRE RED/WHT WIRE RIGHT LIFTGATE CONTROL DRIVE UNIT RIGHT LIFTGATE CONTROL HALL SENSOR SIG SIG POSHS SIG WS TAILGATE CENTRAL LOCKING MOTOR TAILGATE CONTROL BUTTON TAILGATE CONTROL POSITION SENSOR RIGHT LIFTGATE CONTROL ELECTRIC MOTOR TAILGATE CONTROL UNIT TAILGATE CONTROL WARNING BUZZER TAILGATE EXTERNAL OPERATION SWITCH TAILGATE LOCKING ELEMENT TAILGATE ROTARY TUMBLER SWITCH YEL WIRE