Mercedes-Benz GLS-class X166 (2015-2019) engine compartment fuse, relay module Wiring diagrams

ALARM SIREN (RIGHT REAR OF ENGINE COMPT) ANTI-THEFT ALARM SYSTEM/EMERGENCY CALL SYSTEM BUTTON GROUP ATA (EDW) FUNCTION INDICATOR ATA (EDW)/TOWING SENSOR/INTERIOR MOTION SENSOR CONTROL UNIT BATTERY COMPARTMENT PREFUSE BOX BLK WIRE BLU WIRE BLU/WHT WIRE BRN WIRE BRN/BLK WIRE BRN/GRY WIRE BRN/RED WIRE BRN/WHT WIRE CAN B H CAN B L CENTRAL LOCKING MOTOR COMPUTER DATA LINES SYSTEM ENGINE COMPARTMENT FUSE, RELAY MODULE FUSE 152 FUSE 203 FUSE 49 FUSE 53 GLE CLASS GRN WIRE GRY WIRE GRY/BLK WIRE GRY/YEL WIRE HOT AT ALL TIMES LED LIN B 13 MKS ABH MKS ATR SIG MKS IBH MKS VR SIG OVERHEAD CONTROL PANEL CONTROL UNIT PRE-LOCKING POSITION MICRO SWITCH RBA REAR FUSE BOX RED WIRE RED/BLK WIRE RED/WHT WIRE RIGHT REAR DOOR CONTROL MODULE RIGHT REAR DOOR LOCK RIGHT REAR DOOR POWER CLOSING ACTUATOR MOTOR SES MOT C SES MOT RS SIG SIG DF UPPER CONTROL PANEL CONTROL UNIT W/ POWER CLOSING FOR DOORS, TRUNK LID W/O POWER CLOSING FOR DOORS, TRUNK LID WHT WIRE WHT/BLK WIRE WHT/YEL WIRE YEL/BLK WIRE ZV-C ZV-O

11 12 SIG LI 2.1L TURBO DIESEL 3.0L TURBO, 3.5L, 3.5L FLEX 6 7 SIG (+) AC HOUSING, AIR RECIRCULATION MODE BUTTON AUTOMATIC AIR CONDITIONING CONTROL, OPERATING UNIT BLK WIRE BLK/WHT WIRE BLOWER BLOWER MOTOR BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BLU/WHT WIRE BRN WIRE BRN/BLU WIRE BRN/RED WIRE BRN/WHT WIRE CAN B H CAN B L COCKPIT CIRCUIT 30 FUSE BOX COMPUTER DATA LINES SYSTEM COOLANT CIRCULATION PUMP COOLANT TEMPERATURE GAUGE COOLANT TEMPERATURE WARNING LAMP DEFOGGER SYSTEM DRIVER SIDE AIR VENT IONIZER ENGINE COMPARTMENT FUSE, RELAY MODULE EVAPORATOR TEMPERATURE SENSOR FRESH AIR/ AIR RECIRCULATION FLAP ACTUATOR MOTOR FUSE 12 FUSE 19 FUSE 235 FUSE 237 GRN/BLU WIRE GRN/WHT WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/RED WIRE GRY/YEL WIRE HOT AT ALL TIMES HOT W/ CIRCUIT HSHZG HIGH SIDE INSTRUMENT CLUSTER KMV SK (+) KOMP PWR 25 26 KOMP RV (-) LEFT BLENDING AIR FLAP ACTUATOR MOTOR LEFT CENTER AIR OUTLET FLAP ACTUATOR MOTOR LEFT DEFROSTER VENT FLAP ACTUATOR MOTOR LEFT FOOTWELL FLAP ACTUATOR MOTOR MAGNETIC CLUTCH NCA WIRE PNK/WHT WIRE PTC HEATER BOOSTER REAR BLEND AIR FLAP ACTUATOR MOTOR W/ CUT OFF FUNCTION RED WIRE RED/BLK WIRE RED/WHT WIRE REFRIGERANT COMPRESSOR (EXCEPT 4.7L TURBO) (LOWER LEFT FRONT OF ENGINE) REFRIGERANT PRESSURE SENSOR REGULATION VALVE REGULATOR RIGHT BLENDING AIR FLAP ACTUATOR MOTOR SIG SIG (9, 10 PINS NOT USED) 11 SIG RE VDF VIO WIRE VIO/BLK WIRE VIO/WHT WIRE W/ AIR BALANCE PACKAGE WHT WIRE WIPER PARK HEATER WIPER PARK POSITION HEATER RELAY YEL WIRE YEL/BRN WIRE YEL/GRN WIRE YEL/RED WIRE

2.1L TURBO DIESEL 2.1L TURBO DIESEL 3.0L TURBO, 4.7L TURBO 4.7L TURBO 3.5L, 3.5L FLEX 2.1L TURBO DIESEL 3.0L TURBO AC HOUSING, BLK WIRE BLK/BLU WIRE BLK/WHT WIRE BLK/YEL WIRE BLOWER MOTOR BLOWER REGULATOR 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 EA-TANS TSLL SIG ENGINE COMPARTMENT FUSE, RELAY MODULE ENGINE COMPARTMENT PREFUSE BOX ENGINE CONTROLS SYSTEM EXCEPT 2.1L TURBO DIESEL FAN MOTOR (BEHIND RADIATOR) FUSE 215 FUSE 216 FUSE 219 FUSE 235 FUSE 237 FUSE 6 GRN WIRE GRN/WHT WIRE GRY WIRE GRY/BLU WIRE HOT AT ALL TIMES HOT W/ CIRCUIT HOT W/ TURBO CHARGER RELAY ENERGIZED LEFT CENTER AIR OUTLET SYMBOL ILLUMINATION LEFT FRONT SIDE AIR OUTLET SYMBOL ILLUMINATION LUES NCA WIRE OUTSIDE TEMPERATURE SENSOR PNK/BLK WIRE PNK/BLU (OR PNK/BLK) WIRE PNK/BLU WIRE PNK/WHT WIRE RED WIRE RED/BLU WIRE REFRIGERANT PRESSURE SENSOR RIGHT FRONT SIDE AIR OUTLET SYMBOL ILLUMINATION TMOT UHI VIO/WHT WIRE WHT WIRE WIPER PARK HEATER WIPER PARK POSITION HEATER RELAY YEL/RED WIRE YEL/WHT WIRE

ALARM SIREN (RIGHT REAR OF ENGINE COMPT) ANTI-THEFT ALARM SYSTEM/EMERGENCY CALL SYSTEM BUTTON GROUP ATA (EDW) FUNCTION INDICATOR ATA (EDW)/TOWING SENSOR/INTERIOR MOTION SENSOR CONTROL UNIT BATTERY COMPARTMENT PREFUSE BOX BLK WIRE BLU WIRE BLU/WHT WIRE BRN WIRE BRN/BLK WIRE BRN/GRY WIRE BRN/RED WIRE BRN/WHT WIRE CAN B H CAN B L CENTRAL LOCKING MOTOR COMPUTER DATA LINES SYSTEM ENGINE COMPARTMENT FUSE, RELAY MODULE FUSE 152 FUSE 203 FUSE 49 FUSE 53 GLE CLASS GRN WIRE GRY WIRE GRY/BLK WIRE GRY/YEL WIRE HOT AT ALL TIMES LED LIN B 13 MKS ABH MKS ATR SIG MKS IBH MKS VR SIG OVERHEAD CONTROL PANEL CONTROL UNIT PRE-LOCKING POSITION MICRO SWITCH RBA REAR FUSE BOX RED WIRE RED/BLK WIRE RED/WHT WIRE RIGHT REAR DOOR CONTROL MODULE RIGHT REAR DOOR LOCK RIGHT REAR DOOR POWER CLOSING ACTUATOR MOTOR SES MOT C SES MOT RS SIG SIG DF UPPER CONTROL PANEL CONTROL UNIT W/ POWER CLOSING FOR DOORS, TRUNK LID W/O POWER CLOSING FOR DOORS, TRUNK LID WHT WIRE WHT/BLK WIRE WHT/YEL WIRE YEL/BLK WIRE ZV-C ZV-O

BATTERY COMPARTMENT PREFUSE BOX BLK WIRE BLK/WHT WIRE BLU WIRE BRN WIRE COCKPIT CIRCUIT 30 FUSE BOX COMBINATION SWITCH COMPUTER DATA LINES SYSTEM ENGINE COMPARTMENT FUSE, RELAY MODULE ENGINE COMPARTMENT PREFUSE BOX FUSE 11 FUSE 19 FUSE 20 FUSE 228 FUSE 5 FUSE 53 GRN WIRE GRN/WHT WIRE GRY WIRE GRY/BLK WIRE GRY/YEL WIRE HOT AT ALL TIMES HOT W/ HOT W/ CIRCUIT 15 RELAY ENERGIZED LEFT HEATED WIPER BLADE LEFT HOSE HEATER LIFTGATE WINDSHIELD WASHER SYSTEM SWITCH NCA WIRE OVERHEAD CONTROL PANEL CONTROL UNIT RAIN/LIGHT SENSOR RED WIRE RED/BLK WIRE RED/WHT WIRE RELAY ENERGIZED RIGHT HEATED WIPER BLADE RIGHT HOSE HEATER SPRAY NOZZLE HEATER RELAY SPRAY NOZZLE HOSE HEATER STEERING COLUMN MODULE CONTROL UNIT UPPER SPRAY NOZZLE HOSE HEATER W/ STEERING HEATER, AUTOMATIC LANE RECOGNITION, ACTIVE LANE KEEPING ASSIST WHT WIRE WHT/BLU WIRE WINDSHIELD WASHER SYSTEM SWITCH WIPER SWITCH

AUTOMATIC AIR CONDITIONING CONTROL, OPERATING UNIT BLK/WHT WIRE BLU WIRE BRN WIRE BRN/BLK WIRE BRN/RED WIRE CAN B H CAN B L COMPUTER DATA LINES SYSTEM ENGINE COMPARTMENT FUSE, RELAY MODULE FT R ST FT-R-E-A FUSE 235 FUSE 239 GRY WIRE GRY/BLK WIRE GRY/WHT WIRE INSTRUMENT CLUSTER LIFTGATE WASHER FLUID PUMP NCA WIRE RED WIRE RED/BLK WIRE SAM CONTROL UNIT (RIGHT KICK PANEL) SPRAY NOZZLE HOSE HEATER VIO/WHT WIRE W/ MAGIC VISION CONTROL W/O MAGIC VISION CONTROL WAHZG WAZ REL WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WINDSHIELD WASHER SYSTEM PUMP WINDSHIELD WASHER SYSTEM WASHER FLUID LEVEL SWITCH WINDSHIELD WIPER ON/OFF RELAY WIPER LEVEL 1/2 RELAY WIPER MOTOR WIPER PARK HEATER WIPER PARK POSITION HEATER RELAY WP H(+) WP V(+) WWHZG WWS(-) WWS SIG

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

BLK WIRE BLU WIRE BRN WIRE BRN/RED WIRE CAN B H CAN B L CENTER HORNS BUTTON COCKPIT CIRCUIT 30 FUSE BOX COMPUTER DATA LINES SYSTEM ENGINE COMPARTMENT FUSE, RELAY MODULE ENGINE COMPARTMENT PREFUSE BOX FANFARE HORN RELAY FUSE 20 FUSE 205 FUSE 5 GRN WIRE GRN/WHT WIRE GRY WIRE HOT AT ALL TIMES LEFT FANFARE HORN LEFT FANFARE HORN SYSTEM BUTTON RED WIRE RED/BLK WIRE REL FF RELAY ENERGIZED RIGHT FANFARE HORN RIGHT FANFARE HORN SYSTEM BUTTON SAM CONTROL UNIT (RIGHT KICK PANEL) STEERING COLUMN MODULE CONTROL UNIT STEERING WHEEL CLOCK SPRING CONTACT STEERING WHEEL ELECTRONICS WHT WIRE

2.1L TURBO DIESEL 3.0L TURBO 3.0L TURBO, 3.5L, 3.5L FLEX, 4.7L TURBO ALTERNATOR BATTERY SENSOR BLK WIRE BLU WIRE BLU/WHT WIRE BRN WIRE BRN/BLK WIRE BRN/RED WIRE CAN B H CAN B L CAN C H CAN C L CDI CONTROL UNIT COMPUTER DATA LINES SYSTEM ECO START/ STOP FUNCTION DIODE ELECTRONIC IGNITION SWITCH CONTROL UNIT ENGINE COMPARTMENT FUSE, RELAY MODULE FULLY INTEGRATED TRANSMISSION CONTROL CONTROL UNIT FUSE 212 FUSE 7 GLOW OUTPUT STAGE GRN WIRE GRN/WHT WIRE GRY/BLK WIRE GRY/YEL WIRE HOT W/ CIRCUIT 15 RELAY ENERGIZED INSTRUMENT CLUSTER INTELLIGENT SERVO MODULE FOR DIRECT SELECT INTERIOR PREFUSE BOX ME-SFI (ME) CONTROL UNIT N/A NCA WIRE ON-BOARD ELECTRICAL SYSTEM BATTERY PYRO- FUSE RED WIRE RESTRAINTS SAM CONTROL UNIT STARTER STARTER CIRCUIT 50 RELAY STR+ SUPPLEMENTAL SYSTEM VIO WIRE VIO/BLU WIRE VIO/WHT WIRE VOLTAGE DIP LIMITER W/ START/STOP VOLTAGE DIP PROTECTION W/O START/STOP VOLTAGE DIP PROTECTION WHT/GRN WIRE

2.1L TURBO DIESEL BLK WIRE BLU/WHT WIRE BRN WIRE BRN/RED WIRE CAN B H CAN B H IP CAN B L COCKPIT CIRCUIT 30 FUSE BOX COMBUSTION AIR BLOWER COMPUTER DATA LINES SYSTEM DOPUMP EFB ENGINE COMPARTMENT FUSE, RELAY MODULE EXCEPT 2.1L TURBO DIESEL FUEL PREHEATING SYSTEM HEATING ELEMENT FUSE 133 FUSE 15 FUSE 202 GLOW PLUG/ FLAME MONITOR UNIT GRY/BLK WIRE GRY/BLU WIRE HEATER CONTROL UNIT HOT AT ALL TIMES MULTI-FUNCTION ANTENNA NCA WIRE REAR FUSE BOX RED WIRE RED/WHT WIRE SAM CONTROL UNIT (RIGHT KICK PANEL) SHIELD SIG SIG TEL STATIONARY HEATER BUTTON STATIONARY HEATER FUEL PUMP STATIONARY HEATER RADIO REMOTE CONTROL RECEIVER STATIONARY HEATER SWITCHOVER VALVE STATIONARY HEATER UNIT (LEFT REAR OF ENGINE COMPT) TELEPHONE, STATIONARY HEATER ANTENNA CHANGEOVER SWITCH TEMPERATURE SENSOR THERMAL FUSE UPPER CONTROL PANEL CONTROL UNIT USV W/O COMFORT TELEPHONY W/ COMFORT TELEPHONY