Mercedes-Benz GLS-class X166 (2015-2019) relay energized Wiring diagrams

ABS IND. BFS BLA BLU/BLK WIRE BLU/WHT WIRE BRAKE FLUID LEVEL SWITCH BRAKE SYSTEM WARNING IND LAMP BRN WIRE BRN/RED WIRE CAN B H CAN B L COCKPIT CIRCUIT 30 FUSE BOX COMPUTER DATA LINES SYSTEM DIGITAL TACHOGRAPH CONTROL UNIT DOWNHILL SPEED REGULATION BUTTON ESP OFF BUTTON ESP WARNING IND LAMP ESP/ASR OFF WARNING IND LAMP FUSE 12 FUSE 15 FUSE 20 GRN WIRE GRN/BLK WIRE GRN/WHT WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT W/ INSTRUMENT CLUSTER INSTRUMENT CLUSTER SYSTEM LEFT FRONT AXLE RPM SENSOR LEFT REAR AXLE RPM SENSOR LOW RANGE BUTTON LOWER CONTROL PANEL CONTROL UNIT NCA WIRE OFF ROAD PROGRAM BUTTON OFF-ROAD OPERATING PANEL CONTROL UNIT ON-ROAD/ OFF ROAD MENU BUTTON PARKING BRAKE IND LAMP PNK/WHT WIRE RED/BLK WIRE RED/WHT WIRE RELAY ENERGIZED RIGHT FRONT AXLE RPM SENSOR RIGHT REAR AXLE RPM SENSOR STEERING COLUMN MODULE CONTROL UNIT STEERING WHEEL ANGLE SENSOR UPPER CONTROL PANEL CONTROL UNIT VIO WIRE VIO/BLK WIRE WHT WIRE

17 18 TEMP V SIG 6 7 SIG (+) AIR RECIRCULATION MODE BUTTON AUTOMATIC AIR CONDITIONING CONTROL, OPERATING UNIT BATTERY COMPARTMENT PREFUSE BOX BLK WIRE BLU WIRE BLU/BLK WIRE BLU/WHT WIRE BOOSTER BLOWER ELECTRONIC BLOWER CONTROLLER BRN WIRE BRN/RED WIRE BRN/WHT WIRE CAN B H CAN B L COCKPIT CIRCUIT 30 FUSE BOX COMPUTER DATA LINES SYSTEM DEFOGGER SYSTEM DRIVER SIDE AIR VENT IONIZER FRESH AIR/ AIR RECIRCULATION FLAP ACTUATOR MOTOR FUSE 12 FUSE 13 FUSE 19 FUSE 257 FUSE 32 FUSE 40 GND 20 21 GND 6 7 VENT V GRN/BLU WIRE GRY WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/RED WIRE GRY/YEL WIRE HOT AT ALL TIMES HOT W/ HSHZG HIGH SIDE INTERIOR PREFUSE BOX KMV SK (+) KOMP PWM KOMP RV (-) CBR BG LIN DATA NCA WIRE ORG/ WIRE PNK/WHT WIRE REAR AIR CONDITIONING ELECTRONIC BLOWER CONTROLLER REAR BLOWER MOTOR RED WIRE RED/BLK WIRE RED/WHT WIRE RELAY ENERGIZED SIG SIG LI 12 13 SIG RE TEMP KR SIG VDF VIO WIRE VIO/BLK WIRE VIO/WHT WIRE W/ AIR BALANCE PACKAGE WAHZG WAKE-UP WHT WIRE YEL WIRE YEL/BLK WIRE YEL/RED 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

3.0L TURBO 3.5L, 3.5L FLEX, 4.7L TURBO A T DCM M+ ACCELERATOR PEDAL SENSOR BATTERY COMPARTMENT PREFUSE BOX BLK WIRE BLK/BLU WIRE BLK/WHT WIRE BLU WIRE BRN WIRE CAN-S H CAN-S L CENTER REAR BUMPER RADAR SENSOR COMPUTER DATA LINES SYSTEM DCM A T DCM M- DCP ENGINE COMPARTMENT FUSE, RELAY MODULE FRONT LONG RANGE RADAR SENSOR FUSE 116 FUSE 214 FUSE 5 GRN WIRE GRN/WHT WIRE GRY WIRE GRY/BLU WIRE HOT AT ALL TIMES HOT W/ HOT W/ CIRCUIT 15 RELAY ENERGIZED LEFT FRONT BUMPER RADAR SENSOR LEFT OUTER REAR BUMPER RADAR SENSOR ME-SFI (ME) CONTROL UNIT MULTIPLE FUSE 3 ORG/ WIRE PNK WIRE PNK/VIO WIRE PNK/YEL WIRE RADAR SENSORS CONTROL UNIT REAR FUSE BOX RED WIRE RED/BLK WIRE RELAY ENERGIZED RIGHT FRONT BUMPER RADAR SENSOR RIGHT OUTER REAR BUMPER RADAR SENSOR VIO WIRE VIO/BLK WIRE VIO/WHT WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/BRN WIRE YEL WIRE

4.7L TURBO 4.7L TURBO 3.5L, 3.5L FLEX, 3.0L TURBO ACCELERATE, SET SWITCH ACCELERATOR PEDAL SENSOR ACTUAL VALVE POTENTIOMETER 1 ACTUAL VALVE POTENTIOMETER 2 ACTUATOR MOTOR BLK WIRE BLK/BLU WIRE BLS H BLS L BLS M BLU WIRE BLU/WHT WIRE BRN WIRE BRN/GRN WIRE BRN/RED WIRE CAN B H CAN B L CAN C H CAN C L CAN H H CAN H L CDI CONTROL UNIT (2.1L TURBO DIESEL) COMPUTER DATA LINES SYSTEM CRUISE CONTROL LEVER DECELERATE, SET SWITCH DISTRONIC CONTROL DISTRONIC CONTROLLER UNIT DISTRONIC ELECTRIC CONTROLLER UNIT DISTRONIC RADAR SENSOR DISTRONIC WARNING LAMP IND ELECTRONIC STABILITY PROGRAM CONTROL UNIT ENGINE COMPARTMENT FUSE, RELAY MODULE FULLY INTEGRATED TRANSMISSION CONTROL UNIT FUSE 20 FUSE 213 FUSE 234 GRN WIRE GRN/WHT WIRE GRY WIRE GRY/BLU WIRE HOT AT ALL TIMES HOT W/ HOT W/ CIRCUIT 15 RELAY ENERGIZED IND SWITCH INSTRUMENT CLUSTER OFF SWITCH ORG/ WIRE OUTPUT SHAFT RPM SENSOR PNK WIRE PNK/BLK WIRE PNK/VIO WIRE POTI SIG POWER DISTRIBUTION SYSTEM RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE RELAY ENERGIZED RESUME FROM MEMORY SWITCH S VREF 3 STEERING COLUMN MODULE CONTROL UNIT STOP LAMP SWITCH THROTTLE VALVE ACTUATOR U PWG VIO WIRE VIO/BLK WIRE VIO/BLU WIRE VIO/WHT WIRE W/ DISTRONIC PLUS WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/BRN WIRE

BLK WIRE BRN WIRE COMPUTER DATA LINES SYSTEM FUSE 20 GRN WIRE GRN/WHT WIRE HEATING ELEMENT TEMPERATURE SENSOR HOT W/ NCA WIRE NTC- PNK/BLU WIRE RED/BLK WIRE RELAY ENERGIZED STEERING COLUMN ADJUSTMENT SWITCH STEERING COLUMN ADJUSTMENT, STEERING WHEEL HEATER SWITCH STEERING COLUMN MODULE CONTROL UNIT STEERING WHEEL CLOCK SPRING CONTACT STEERING WHEEL ELECTRONICS STEERING WHEEL HEATER STEERING WHEEL HEATER HEATING ELEMENT STEERING WHEEL HEATER INDICATOR LAMP STEERING WHEEL HEATER SWITCH W/ STEERING WHEEL HEATER, AUTOMATIC LANE RECOGNITION, ACTIVE LANE KEEPING ASSIST

ANST BATTERY COMPARTMENT PREFUSE BOX BLK WIRE BLK/GRY WIRE BRN WIRE BRN/RED WIRE CAN B H CAN B L COMPUTER DATA LINES SYSTEM FUSE 63 GRN WIRE HALL HS 2 PANORAMIC SLIDING ROOF CONTROL MODULE PANORAMIC SLIDING ROOF CONTROL UNIT PANORAMIC SLIDING ROOF HALL SENSOR 1 PANORAMIC SLIDING ROOF HALL SENSOR 2 PANORAMIC SLIDING ROOF MOTOR PANORAMIC SLIDING ROOF ROLLER SUN BLIND DRIVE UNIT PNK ANST WIRE PNK WIRE RED WIRE RED/BLK WIRE RELAY ENERGIZED SENSOR 1 SENSOR 2 SUN BLIND MOTOR YEL/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

ACCELERATE, ACCEPT/TERMINATE PHONE CALL BUTTON ALDW - BACK, VOICE CONTROL SYSTEM OFF BUTTON BLK WIRE BLU WIRE BRN WIRE BUTTONS +, - FOR SETTING SPECIFIC FUNCTIONS, VOLUME CONTROL CENTER HORNS BUTTON COCKPIT CIRCUIT 30 FUSE BOX COMBINATION SWITCH COMPUTER DATA LINES SYSTEM CRUISE CONTROL LEVER DECELERATE, SET SWITCH DIRECT SELECT LEVER DISTRONIC CONTROL DRIVER AIR BAG SQUIB 1 DRIVER AIR BAG SQUIB 2 FUSE 11 FUSE 20 GRN WIRE GRN/WHT WIRE HEADLAMP FLASHER/ HIGH BEAM SWITCH HEATING ELEMENT TEMPERATURE SENSOR HOT AT ALL TIMES INDICATOR SWITCH L OK LEFT FANFARE HORN SYSTEM BUTTON LEFT MULTI-FUNCTION STEERING WHEEL BUTTON GROUP LIFTGATE WINDSHIELD WASHER SYSTEM SWITCH LOW BEAM SWITCH LSP + MUTE FUNCTION BUTTON MUTE SBS NCA WIRE NTC- OFF SWITCH OK BUTTON PNK/BLU WIRE R RETURN RED WIRE RED/BLK WIRE RED/WHT WIRE RELAY ENERGIZED RESUME FROM MEMORY SWITCH RIGHT FANFARE HORN SYSTEM BUTTON RIGHT MULTI-FUNCTION STEERING WHEEL BUTTON GROUP SCROLL FORWARD/BACK BUTTON SET SWITCH STEERING COLUMN ADJUSTMENT SWITCH STEERING COLUMN ADJUSTMENT, STEERING WHEEL HEATER SWITCH STEERING COLUMN MODULE CONTROL UNIT STEERING WHEEL ANGLE SENSOR STEERING WHEEL CLOCK SPRING CONTACT STEERING WHEEL DOWNSHIFT BUTTON (IF EQUIPPED) STEERING WHEEL ELECTRONICS STEERING WHEEL HEATER STEERING WHEEL HEATER HEATING ELEMENT STEERING WHEEL HEATER INDICATOR LAMP (IF EQUIPPED) STEERING WHEEL HEATER SWITCH (IF EQUIPPED) STEERING WHEEL UPSHIFT BUTTON (IF EQUIPPED) STEERING WHEEL VIBRATION MOTOR SUPPLEMENTAL RESTRAINTS SYSTEM SYSTEM SELECTION BUTTON TURN SIGNAL LAMPS SWITCH U MFL L TEL ANS/ END CALL UP/DOWN GND U MFL R UP/DOWN VIO WIRE VOICE CONTROL SYSTEM ON BUTTON W/ STEERING WHEEL HEATER, AUTOMATIC LANE RECOGNITION, ACTIVE LANE KEEPING ASSIST WINDSHIELD WASHER SYSTEM SWITCH WIPE SWITCH YEL WIRE

BATTERY COMPARTMENT PREFUSE BOX BBV-SIG BFS BLK WIRE BLU WIRE BRAKE FLUID LEVEL SWITCH BRAKE SYSTEM WARNING LAMP BRN WIRE BRN/GRY WIRE BRN/RED WIRE CAN B H CAN B H RBA CAN B L COCKPIT CIRCUIT 30 FUSE BOX COMPUTER DATA LINES SYSTEM DR (+) DRIVER SEAT BELT BUCKLE RESTRAINT SYSTEM SWITCH ELECTRIC PARKING BRAKE CONTROL UNIT ELECTRIC PARKING BRAKE SWITCH FUSE 12 FUSE 152 FUSE 59 GRN WIRE GRN/WHT WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/RED WIRE HOT AT ALL TIMES INSTRUMENT CLUSTER LEFT FRONT DOOR CONTROL UNIT LEFT FRONT DOOR LOCK MULTI-FUNCTION DISPLAY NCA WIRE PARKING BRAKE INDICATOR LAMP PRE-LOCKING POSITION MICROSWITCH REAR CONTROL UNIT (UNDER CENTER OF REAR SEATS) REAR FUSE BOX RED/BLK WIRE RED/WHT WIRE RELAY ENERGIZED RIGHT FRONT BRAKE WEAR SENSOR RIGHT REAR BRAKE WEAR SENSOR SAM CONTROL UNIT SEAT BELT WARNING LAMP SIG SIG DF SUPPLEMENTAL RESTRAINT SYSTEM CONTROL UNIT SW 1 SW 2 SW 3 SW 4 VIO WIRE W/ HEAD UP DISPLAY W/ POWER CLOSING DOORS, TRUNK LID WHT WIRE YEL WIRE YEL/WHT WIRE