Mercedes-Benz CLS-class C257 (2017-2021) driver-side fuse, relay module Wiring diagrams

BLK WIRE BLK/BLU WIRE BRAKE FLUID LEVEL SWITCH BRN WIRE BRN/BLK WIRE BRN/RED WIRE BRN/WHT WIRE CAN B H CAN B L CAN HMI H CAN HMI L COMPUTER DATA LINES SYSTEM COUPE CONVERTIBLE DRIVER-SIDE FUSE, RELAY MODULE ELECTRIC PARKING BRAKE SWITCH FLEX-E BM FLEX-E BP FRONT SAM CONTROL UNIT FUSE 205 GRN WIRE GRY/BLU WIRE HOT AT ALL TIMES INSTRUMENT CLUSTER LEFT ELECTRIC PARKING BRAKE ACTUATOR MOTOR LEFT FRONT AXLE RPM SENSOR NCA WIRE PNK WIRE RED WIRE RED/BLU WIRE RED/WHT WIRE RIGHT ELECTRIC PARKING BRAKE ACTUATOR MOTOR RIGHT FRONT AXLE RPM SENSOR RIGHT FRONT BRAKE WEAR SENSOR SIG STEERING COLUMN MODULE CONTROL UNIT VIO WIRE VIO/WHT WIRE WHT WIRE WHT/YEL WIRE YEL WIRE

BLK WIRE BLK/VIO WIRE BLU WIRE BLU/BLK WIRE BRN WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE CAN B H CAN B L COMPUTER DATA LINES SYSTEM DCS DCS GND DRIVER-SIDE FUSE, RELAY MODULE FUSE 203 GRN WIRE GRY WIRE GRY/RED WIRE HOT AT ALL TIMES LEFT FRONT DOOR AMBIANCE ILLUMINATION LEFT FRONT DOOR CENTRAL LOCKING INTERIOR SWITCH LEFT FRONT DOOR CONTROL UNIT (IN LEFT FRONT DOOR) LEFT FRONT DOOR EXIT LAMP LEFT FRONT DOOR EXTERIOR DOOR HANDLE ILLUMINATION LEFT FRONT DOOR HANDLE AMBIANCE ILLUMINATION LEFT FRONT DOOR LOCK LEFT FRONT DOOR POWER CLOSING ACTUATOR MOTOR LEFT FRONT DOOR STOWAGE COMPARTMENT ILLUMINATION LEFT FRONT DOOR WARNING LAMP LOCK MOT GND/(+) MOT- PNK/BLU WIRE PNK/VIO WIRE PNK/WHT WIRE PRE-LOCKING POSITION MICROSWITCH RED WIRE RIGHT FRONT DOOR EXIT LAMP RIGHT FRONT DOOR WARNING LAMP SIG SIG (+) UNLOCK SIG GND W/ INCREASED THEFT PROTECTION W/ POWER CLOSING W/O POWER CLOSING W/ PREMIUM AMBIENT LIGHTING WHT/VIO WIRE YEL WIRE YEL/GRY WIRE

BLK WIRE BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BRN WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/RED WIRE BRN/YEL WIRE CAN B H CAN B L COMPUTER DATA LINES SYSTEM DCS DRIVER SIDE ENGINE HOOD CONTACT SWITCH DRIVER-SIDE FUSE, RELAY MODULE FRONT SAM CONTROL UNIT (LEFT END OF DASH) FUSE 200 FUSE 301 GRN WIRE GRY WIRE HOT AT ALL TIMES LOCK MOT GND/(+) MOT GND/(+) DCS GND ORG/ WIRE ORG/GRN WIRE PASSENGER SIDE ENGINE HOOD CONTACT SWITCH PASSENGER-SIDE A-PILLAR FUSE BOX PNK/BLU WIRE PRE-LOCKING POSITION MICROSWITCH RED WIRE RED/YEL WIRE RIGHT REAR DOOR AMBIANCE ILLUMINATION RIGHT REAR DOOR CONTROL UNIT (IN RIGHT REAR DOOR) RIGHT REAR DOOR EXIT LAMP RIGHT REAR DOOR EXTERIOR DOOR HANDLE ILLUMINATION RIGHT REAR DOOR HANDLE AMBIANCE ILLUMINATION RIGHT REAR DOOR LOCK RIGHT REAR DOOR POWER CLOSING ACTUATOR MOTOR RIGHT REAR DOOR STOWAGE COMPARTMENT ILLUMINATION SIG SIG (+) CAN-B L SIG GND UNLOCK W/ INCREASED THEFT PROTECTION W/ POWER CLOSING W/O POWER CLOSING W/ PREMIUM AMBIENT LIGHTING WHT/VIO WIRE YEL WIRE

2 3 CLUTCH (+) 6 7 SIG (+) AC HOUSING, BLOWER MOTOR BLOWER REGULATOR BLU WIRE BLU/BRN WIRE BLU/GRN WIRE BLU/YEL WIRE BRN WIRE BRN/VIO WIRE BRN/WHT WIRE CAN B H CAN B L CENTRAL AIR DISTRIBUTION POSITION DETECTION MICROSWITCH CLIMATE CONTROL UNIT (RIGHT SIDE OF DASH) COMPUTER DATA LINES SYSTEM DRIVER-SIDE FUSE, RELAY MODULE EMP SIG EVAPORATOR TEMPERATURE SENSOR FUSE 210 FUSE 3 FUSE 5 FUSE 6 GRN WIRE GRN/VIO WIRE GRY/RED WIRE HOT AT ALL TIMES LEFT FOOTWELL AIR OUTLET TEMPERATURE SENSOR MULTIPLE FUSE 2 MULTIPLE FUSE 3 NCA WIRE PASSENGER-SIDE A-PILLAR FUSE BOX PNK WIRE PTC HEATER BOOSTER REAR CENTER AIR VENT AIR OUTLET TEMPERATURE SENSOR RED WIRE RED/BLK WIRE RED/BLU WIRE RED/VIO WIRE RED/WHT WIRE RED/YEL WIRE RIGHT FOOTWELL AIR OUTLET TEMPERATURE SENSOR SIG SIG SIG STATIONARY HEATER CONTROL UNIT TEMP SIG VALVE VEHICLE INTERIOR PREFUSE BOX WHT WIRE WHT/BLU WIRE WINDSHIELD HEATER CONTROL UNIT YEL WIRE YEL/VIO 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

AUDIO/COMAND DISPLAY BLK WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BRN WIRE CAN A H CAN A L CAN A L PNK MIC L WIRE COMPUTER DATA LINES SYSTEM DRIVER-SIDE FUSE, RELAY MODULE FUSE 208 FUSE 209 GRN WIRE GRN/BLK WIRE GRY WIRE HEAD UNIT HOT AT ALL TIMES HSVL INSTRUMENT CLUSTER LEFT FRONT DOOR MIDRANGE SPEAKER LEFT FRONT DOOR TWEETER LEFT REAR DOOR MIDRANGE SPEAKER MIC H MIC-L MOST DATA BUS CIRCUIT MOST IN MOST OUT MUTE NCA WIRE ORG/ WIRE PNK WIRE PNK/BLK WIRE RED WIRE RED/WHT WIRE RIGHT END OF DASH) RIGHT FRONT FOOTWELL WOOFER RIGHT REAR DOOR MIDRANGE SPEAKER SHIELD SHIELD DISP SHIELD IC/DISP SHIELD WLAN/BT SIG USB USB GND USB H USB L VIO WIRE W-LAN W-LAN ANTENNA W/ COMAND APS W/O COMAND APS WHT WIRE WHT/BLK WIRE

BLK WIRE BLK/WHT WIRE BLU WIRE BLU/PNK WIRE BLU/VIO WIRE BRN WIRE BRN/WHT WIRE BRN/YEL WIRE CAN A H CAN A L CAN HMI H CAN HMI L COMPUTER DATA LINES SYSTEM DIAG DIAGNOSTIC CONNECTOR DIGITAL INSTRUMENT CLUSTER FULL DISPLAY FAN MOTOR DRIVER-SIDE FUSE, RELAY MODULE EARLY PRODUCTION ETH (-) FM AM FUSE 206 FUSE 3 GPS GPS ANTENNA GRN WIRE HEAD UNIT HOT AT ALL TIMES HSVL LATE PRODUCTION MULTIPLE FUSE 3 NAVIGATION SYSTEM NCA WIRE ORG/ WIRE PASSENGER-SIDE A-PILLAR FUSE BOX PNK WIRE RED WIRE RED/GRY WIRE RED/WHT WIRE RED/YEL WIRE RVC SDARS SDARS ANTENNA SHIELD SHIELD AUX/RVC SHIELD GPS SIG TOUCHPAD (IF EQUIPPED) VIO WIRE VIO/WHT WIRE W/ HERMES W/O COMAND APS W/ COMAND APS W/O HERMES WAKE-UP WHT/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 DRIVER-SIDE FUSE, RELAY MODULE FUSE 213 FUSE 310 HOT AT ALL TIMES LEFT FRONT REVERSIBLE EMERGENCY TENSIONING RETRACTOR PASSENGER-SIDE A-PILLAR FUSE BOX RED/BLK WIRE RED/GRN WIRE RIGHT FRONT REVERSIBLE EMERGENCY TENSIONING RETRACTOR VIO WIRE VIO/WHT WIRE

BLK/YEL WIRE BLU WIRE BRN WIRE CAN LR H CAN LR L COMPUTER DATA LINES SYSTEM DRIVER-SIDE FUSE, RELAY MODULE FLEX-E BM FLEX-E BP FUSE 205 FUSE 211 GRN WIRE GRY WIRE HEAD UNIT MULTI-FUNCTION STEERING WHEEL BUTTON GROUP HORN CONTACT PLATE HOT AT ALL TIMES INSTRUMENT CLUSTER MULTI-FUNCTION STEERING WHEEL BUTTON GROUP NCA WIRE PNK WIRE RED WIRE RED/BLU WIRE RES+ SENS GND SIG SPI CLK SPI MISO SPI MOSI STEERING COLUMN MODULE CONTROL UNIT (TOP OF STEERING COLUMN) STEERING WHEEL DOWNSHIFT BUTTON STEERING WHEEL ELECTRONICS STEERING WHEEL HEATER STEERING WHEEL UPSHIFT BUTTON SUPPLEMENTAL RESTRAINTS SYSTEM TEMP VIO/YEL WIRE