Mercedes-Benz CLS-class C257 (2017-2021) engine compartment prefuse box Wiring diagrams

??? ??? AIR BODY CONTROL COMPRESSOR (LEFT FRONT OF ENGINE COMPT) AIR BODY CONTROL PRESSURE RELIEF VALVE AIR BODY CONTROL RELAY AIR BODY CONTROL UNIT BLK/BRN WIRE BLK/RED WIRE BLK/YEL WIRE BLU WIRE BLU/GRN WIRE BLU/GRY WIRE BRN WIRE COMPRESSOR) ENGINE COMPARTMENT PREFUSE BOX ENGINE FUSE, RELAY MODULE FLEX-E BM FLEX-E BP FUSE 114 FUSE 132 FUSE 454 FUSE 5 GRN WIRE GRN/VIO WIRE GRN/WHT WIRE GRY/RED WIRE GRY/VIO WIRE GRY/WHT WIRE HOT AT ALL TIMES LEFT FRONT LEFT FRONT AXLE DAMPING VALVE UNIT NCA WIRE ORG/ WIRE PNK WIRE REAR FUSE, RELAY MODULE RED WIRE RED/BLK WIRE RED/GRY WIRE RED/WHT WIRE RED/YEL WIRE REL (+) REL GND RIGHT REAR LEVEL SENSOR SIG SOLENOID VALVE 1 VALVE 2 VIO WIRE VLV 1 H VLV 1 L WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/YEL WIRE YEL WIRE YEL/BLK WIRE YEL/BLU WIRE YEL/BRN WIRE

??? ??? BLK WIRE BLK/BLU WIRE BLK/RED WIRE BLK/VIO WIRE BLU/BLK WIRE BLU/YEL WIRE BRAKE VACUUM SENSOR BRN WIRE BRN/BLK WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/RED WIRE CAN B H CAN B L CAN H H CAN H L COMPUTER DATA LINES SYSTEM COUPE CONVERTIBLE ELECTRONIC STABILITY PROGRAM CONTROL UNIT ENGINE COMPARTMENT PREFUSE BOX ENGINE FUSE, RELAY MODULE FLEX-E BP FUSE 1 FUSE 129 FUSE 2 GRN WIRE GRN/ORG WIRE GRN/YEL WIRE GRY/GRN WIRE HOT AT ALL TIMES HOT W/ ENGINE COMPARTMENT TERMINAL 15 RELAY ENERGIZED LEFT REAR AXLE RPM SENSOR MOT (+) MOT GND NCA WIRE PNK/GRN WIRE REAR SAM CONTROL UNIT RED WIRE RED/BLK WIRE RED/GRY WIRE RED/WHT WIRE RIGHT REAR AXLE RPM SENSOR RIGHT REAR BRAKE WEAR SENSOR SIG SIG (1) SIG (2) SIG 3 SIG 4 PNK FLEX E BM PNK FLEX E BM WIRE STOP LAMP SWITCH VIO WIRE VIO/WHT WIRE WHT WIRE WHT/YEL WIRE YEL WIRE

BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/GRN WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE CAN B H CAN B L CAN PER H CAN PER L CLIMATE CONTROL OPERATING UNIT COMPUTER DATA LINES SYSTEM COOLANT TEMPERATURE SENSOR DRIVER-SIDE FUSE, RELAY MODULE DRIVETRAIN CONTROL UNIT ELECTRIC COOLANT PUMP (BOTTOM RIGHT FRONT OF ENGINE) ENGINE COMPARTMENT PREFUSE BOX ENGINE FUSE, RELAY MODULE FAN MOTOR (BEHIND RADIATOR) FRONT SAM CONTROL UNIT FUSE 117 FUSE 119 FUSE 209 FUSE 305 FUSE 311 FUSE 7 GND TMOT GRN WIRE GRN/BLK WIRE GRN/WHT WIRE GRY/RED WIRE HOT AT ALL TIMES HOT W/ CPC RELAY ENERGIZED LIN ME-SFI (ME) CONTROL UNIT (LEFT TOP OF ENGINE) NCA WIRE OUTSIDE TEMPERATURE SENSOR OVERHEAD CONSOLE PASSENGER-SIDE A-PILLAR FUSE BOX PNK WIRE RAIN/LIGHT SENSOR RED WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE REFRIGERANT COMPRESSOR REFRIGERANT COMPRESSOR W/ MAGNETIC CLUTCH REFRIGERANT PRESSURE SENSOR (AT BOTTOM LEFT SIDE OF RADIATOR) SIG SIG GND W/ REFRIGERANT COMPRESSOR MAGNETIC CLUTCH W/O REFRIGERANT COMPRESSOR MAGNETIC CLUTCH YEL WIRE YEL/BLK WIRE

BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/GRN WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE CAN B H CAN B L CLIMATE CONTROL UNIT COMPUTER DATA LINES SYSTEM COOLANT CIRCULATION PUMP COOLANT LEVEL SWITCH COOLANT TEMPERATURE SENSOR DRIVER-SIDE FUSE, RELAY MODULE ELECTRIC COOLANT PUMP (BOTTOM RIGHT FRONT OF ENGINE) ENGINE COMPARTMENT PREFUSE BOX ENGINE FUSE, RELAY MODULE FAN MOTOR (BEHIND RADIATOR) FRONT SAM CONTROL UNIT FUSE 119 FUSE 210 FUSE 311 FUSE 7 GRN/BLK WIRE HOT AT ALL TIMES HOT W/ CPC RELAY ENERGIZED ME-SFI (ME) CONTROL UNIT PASSENGER-SIDE A-PILLAR FUSE BOX RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE SIG SIG GND WHT/BLU WIRE YEL/BLK WIRE

BRN WIRE CAN HMI H CAN HMI L COMPUTER DATA LINES SYSTEM ELECTRIC POWER STEERING ACTUATOR MOTOR ELECTRIC POWER STEERING TORQUE SENSOR ELECTRICAL POWER STEERING CONTROL UNIT ENGINE COMPARTMENT PREFUSE BOX FLEX-E BM FLEX-E BP FUSE 8 GRN WIRE HOT AT ALL TIMES INSTRUMENT CLUSTER NCA WIRE PNK WIRE RED WIRE SENS 1 SENS 2 SIG VIO WIRE VIO/WHT WIRE

ACTIVE BRAKE ASSIST CONTROLLER UNIT AIR BODY CONTROL COMPRESSOR BACKUP RELAY BATTERY DISCONNECT SWITCH RELAY BRN WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/WHT WIRE BRN/YEL WIRE CPC RELAY DC/DC CONVERTER CONTROL UNIT DISTRONIC DISTANCE-PILOT CONTROLLER UNIT ENGINE COMPARTMENT PREFUSE BOX ENGINE FUSE, RELAY MODULE HEATED REAR WINDOW RELAY KEYLESS-GO CONTROL UNIT LEFT FRONT LAMP UNIT LEFT OUTER FRONT BUMPER RADAR SENSOR LEFT REAR LAMP UNIT LUGGAGE COMPARTMENT SOCKET NCA WIRE PASSENGER SIDE ENGINE HOOD CONTACT SWITCH RADOME HEATER REAR FUSE, RELAY MODULE RIGHT FANFARE HORN RIGHT FRONT BRAKE WEAR SENSOR RIGHT OUTER FRONT BUMPER RADAR SENSOR SHORT, LONG-RANGE RADAR SENSOR SPRAY NOZZLE HOSE HEATER TRAILER RECOGNITION CONTROL UNIT TRAILER SOCKET TRUNK LID/ LIFTGATE LOCK TV TUNER CONTROL UNIT WINDSHIELD WASHER SYSTEM PUMP WIPER MOTOR

BLK WIRE BRAKE FLUID LEVEL SWITCH BRN WIRE BRN/GRN WIRE BRN/RED WIRE BRN/WHT WIRE CAN B H CAN B L CAN H H CAN H L CAN HMI H CAN HMI L COMPUTER DATA LINES SYSTEM DCS DCS GND DRIVER SEAT BELT BUCKLE SWITCH DRIVER SEAT POSITION DETECTION SWITCH DRIVER-SIDE FUSE, RELAY MODULE ELECTRIC PARKING BRAKE SWITCH ELECTRONIC STABILITY PROGRAM CONTROL UNIT ENGINE COMPARTMENT PREFUSE BOX FRONT SAM CONTROL UNIT FUSE 1 FUSE 200 FUSE 203 FUSE 312 FUSE 322 GRN WIRE GRY/BLU WIRE HOT AT ALL TIMES INSTRUMENT CLUSTER LEFT FRONT DOOR CONTROL UNIT (IN LEFT FRONT DOOR) LEFT FRONT DOOR LOCK NCA WIRE ORG/GRN WIRE PASSENGER-SIDE A-PILLAR FUSE BOX PRE-LOCKING POSITION MICROSWITCH RED WIRE RED/BLU WIRE RED/WHT WIRE SIG SIG GND SUPPLEMENTAL RESTRAINT SYSTEM CONTROL UNIT VIO WIRE VIO/WHT WIRE W/ POWER CLOSING W/O POWER CLOSING YEL WIRE YEL/GRY WIRE

BLK WIRE BLK/BLU WIRE BRN WIRE CAN HMI H CAN HMI L COMPUTER DATA LINES SYSTEM ELECTRIC PARKING BRAKE SWITCH ELECTRONIC STABILITY PROGRAM CONTROL UNIT ENGINE COMPARTMENT PREFUSE BOX FLEX-E BM FLEX-E BP FUSE 1 GRN WIRE GRY/BLU WIRE HOT AT ALL TIMES INSTRUMENT CLUSTER LEFT ELECTRIC PARKING BRAKE ACTUATOR MOTOR MOT GND/(+) NCA WIRE PNK WIRE RED WIRE RED/WHT WIRE RIGHT ELECTRIC PARKING BRAKE ACTUATOR MOTOR SIG (1) SIG (2) SIG 3 SIG 4 VIO WIRE VIO/WHT WIRE YEL WIRE

??? ??? AAG BLK WIRE BLK/BLU WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/RED WIRE BLU/WHT WIRE BRN WIRE BRN/RED WIRE BRN/WHT WIRE CAN B H CAN B L CAN C H CAN C L COMPUTER DATA COMPUTER DATA LINES SYSTEM CRASH ENGINE COMPARTMENT PREFUSE BOX ENGINE FUSE, RELAY MODULE FUEL PRESSURE SENSOR FUEL PUMP (FP) FUEL PUMP CONTROL UNIT (UNDER RIGHT REAR SEAT) FUEL TANK DIAGNOSTIC MODULE FUSE 101 FUSE 102 FUSE 103 FUSE 104 FUSE 5 GRN WIRE GRN/GRY WIRE GRN/PNK WIRE GRN/WHT WIRE GRY WIRE GRY/BLK WIRE GRY/PNK WIRE HEAT GND HECK R HOT AT ALL TIMES LEFT FUEL TANK FUEL LEVEL INDICATOR FILL LEVEL SENSOR LINES SYSTEM ME-SFI (ME) CONTROL UNIT MPAC U MPAC V MPAC W NCA WIRE ORG/BLU WIRE PNK/BLK WIRE PNK/RED WIRE PUMP PUMP GND PUMP SIG REAR SAM CONTROL UNIT RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE REL (+) RIGHT FUEL TANK FUEL LEVEL INDICATOR FILL LEVEL SENSOR SIG STARTING/CHARGING SYSTEM SUPPLEMENTAL RESTRAINTS SYSTEM TO CPC RELAY (DIAGRAM 9 OF 9) VALVE GND VIO/ORG WIRE VIO/WHT WIRE WHT WIRE YEL WIRE