Mercedes-Benz GLS-class X166 (2015-2019) engine compartment prefuse box Wiring diagrams

AIRMATIC COMPRESSOR AIRMATIC CONTROL UNIT AIRMATIC PRESSURE REDUCTION VALVE AIRMATIC RELAY BATTERY COMPARTMENT PREFUSE BOX BLK WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BLU/WHT WIRE BRN WIRE BRN/BLK WIRE BRN/WHT WIRE COMPRESSOR) COMPUTER DATA LINES SYSTEM ENGINE COMPARTMENT FUSE, RELAY MODULE ENGINE COMPARTMENT PREFUSE BOX FUSE 2 FUSE 238 FUSE 5 FUSE 62 GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GRN/WHT WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/WHT WIRE HOT AT ALL TIMES HOT W/ CIRCUIT LEFT FRONT AXLE DAMPING VALVE UNIT LEFT FRONT BODY LATERAL ACCELERATION SENSOR MULTIPLE FUSE 1 NIV HL (-) NIV HR (-) NIV VL (+) NIV VR (+) PNK/BLK WIRE RED WIRE RED/BLK WIRE RIGHT FRONT AXLE DAMPING VALVE UNIT RIGHT REAR BODY LATERAL ACCELERATION SENSOR SOLENOID VALVE 1 VALVE 2 VB + VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE YEL/WHT WIRE

ABLV AIRMATIC COMPRESSOR AIRMATIC CONTROL UNIT AIRMATIC PRESSURE REDUCTION VALVE AIRMATIC RELAY BATTERY COMPARTMENT PREFUSE BOX BLK WIRE BLK/BLU WIRE BLU WIRE BLU/BLK WIRE BLU/WHT WIRE BRN WIRE BRN/WHT WIRE COMPRESSOR) COMPUTER DATA LINES SYSTEM DVV ENGINE COMPARTMENT FUSE, RELAY MODULE ENGINE COMPARTMENT PREFUSE BOX FUSE 2 FUSE 238 FUSE 5 FUSE 62 GRN WIRE GRN/BLK WIRE GRN/WHT WIRE GRY WIRE GRY/BLK WIRE GRY/WHT WIRE HOT AT ALL TIMES HOT W/ CIRCUIT LEFT FRONT AXLE DAMPING VALVE UNIT LEFT FRONT LEVEL SENSOR MULTIPLE FUSE 1 NCA WIRE ORG/ WIRE PNK WIRE PNK/BLK WIRE PNK/WHT WIRE RED WIRE RED/BLK WIRE RED/WHT WIRE REL (+) SIG REL VERS RIGHT FRONT AXLE DAMPING VALVE UNIT RIGHT FRONT LEVEL SENSOR SIG SOLENOID VALVE 1 VALVE 2 VIO WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE YEL WIRE YEL/WHT WIRE

BALL VALVE BATTERY COMPARTMENT PREFUSE BOX BLA BLK WIRE BLS M BLU/BLK WIRE BLU/WHT WIRE BRAKE VACUUM SENSOR BRN WIRE CAN H H CAN H L COMPUTER DATA LINES SYSTEM DF HL M DF HL S DF HR M DF HR S DF VL M BLS L DF VL S DF VR M DF VR S DZVL A ELECTRONIC STABILITY PROGRAM CONTROL UNIT ENGINE COMPARTMENT FUSE, RELAY MODULE ENGINE COMPARTMENT PREFUSE BOX FRONT AXLE FRONT AXLE BRAKE PRESSURE SENSOR FRONT AXLE INTAKE FUSE 1 FUSE 2 FUSE 204 FUSE 230 FUSE 4 GRN WIRE GRN/BLK WIRE GRN/WHT WIRE GRY WIRE GRY/BLK WIRE GRY/WHT WIRE HIGH PRESSURE, RETURN PUMP HOT AT ALL TIMES HOT W/ CIRCUIT 15 RELAY ENERGIZED LEFT FRONT PRESSURE LEFT REAR PRESSURE MULTI FUSE 1 PNK/BLK WIRE PNK/WHT WIRE REAR AXLE REAR AXLE INTAKE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE REGULATOR VALVE (HOLD) REGULATOR VALVE (RELEASE) RIGHT FRONT PRESSURE RIGHT REAR PRESSURE STOP LAMP SWITCH SWITCHOVER VALVE TRACTION SYSTEM HYDRAULIC UNIT (LEFT FRONT OF ENGINE COMPT) UB (+) BLS H VAC SIG VIO WIRE VIO/BLK WIRE VIO/WHT WIRE YAW RATE, LATERAL, LONGITUDINAL ACCELERATION SENSOR YEL/BLU WIRE

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

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

2.1L TURBO DIESEL 4.7L TURBO 3.0L TURBO, 3.5L, 3.5L FLEX 2.1L TURBO DIESEL AUTOMATIC AIR CONDITIONING CONTROL, OPERATING UNIT BLK/BLU WIRE BLU/WHT WIRE BRN WIRE BRN/GRY WIRE BRN/RED WIRE CAN B H CAN B L CHARGE AIR COOLER CIRCULATION PUMP COMPUTER DATA LINES SYSTEM COOLANT CIRCULATION PUMP COOLANT TEMPERATURE SENSOR 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 6 GRN WIRE GRN/WHT WIRE HOT AT ALL TIMES HOT W/ CIRCUIT HOT W/ TURBO CHARGER RELAY ENERGIZED LUES PNK/BLK WIRE PNK/BLU WIRE PNK/WHT WIRE POWER DISTRIBUTION SYSTEM RED WIRE RED/BLU WIRE REFRIGERANT PRESSURE SENSOR SIG TMOT VIO/WHT WIRE YEL/WHT WIRE

BRN WIRE BRN/RED WIRE CAN B H CAN B L COMPUTER DATA LINES SYSTEM ELECTRIC POWER STEERING ACTUATOR MOTOR ELECTRIC POWER STEERING TORQUE SENSOR ELECTRICAL POWER STEERING CONTROL UNIT ENGINE COMPARTMENT PREFUSE BOX FUSE 8 HOT AT ALL TIMES INSTRUMENT CLUSTER NCA WIRE PAS A PAS B RED WIRE YEL WIRE YEL/WHT 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

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

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