Mercedes-Benz CLS-class C257 (2017-2021) red/blu 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 FRONT SAM CONTROL UNIT FUSE 302 FUSE 424 FUSE 6 GRN WIRE GRY WIRE GRY/RED WIRE HOT AT ALL TIMES LEFT FANFARE HORN LEFT REAR DOOR WARNING LAMP LOCK MOT GND/(+) MOT GND/(+) DCS GND MULTIPLE FUSE 3 ORG/GRN WIRE PASSENGER-SIDE A-PILLAR FUSE BOX PNK/BLU WIRE PNK/VIO WIRE PNK/WHT WIRE PRE-LOCKING POSITION MICROSWITCH REAR FUSE, RELAY MODULE RED WIRE RED/BLU WIRE RED/GRN WIRE RED/YEL WIRE RIGHT FRONT DOOR AMBIANCE ILLUMINATION RIGHT FRONT DOOR CENTRAL LOCKING INTERIOR SWITCH RIGHT FRONT DOOR CONTROL UNIT RIGHT FRONT DOOR EXTERIOR DOOR HANDLE ILLUMINATION RIGHT FRONT DOOR HANDLE AMBIANCE ILLUMINATION RIGHT FRONT DOOR LOCK RIGHT FRONT DOOR POWER CLOSING ACTUATOR MOTOR RIGHT FRONT DOOR STOWAGE COMPARTMENT ILLUMINATION SIG SIG GND THEFT DETECTION SYSTEM ELECTRICAL CONNECTOR THEFT DETECTION SYSTEM HORN RELAY UNLOCK W/ INCREASED THEFT PROTECTION W/ POWER CLOSING W/O POWER CLOSING W/ PREMIUM AMBIENT LIGHTING WHT/VIO WIRE YEL WIRE YEL/GRY WIRE

ALARM SIREN BLK WIRE BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BRN WIRE BRN/BLU WIRE BRN/RED WIRE BRN/YEL WIRE CAN B H CAN B L COMPUTER DATA LINES SYSTEM DCS DCS GND FUSE 214 FUSE 318 GRN WIRE GRY WIRE HOT AT ALL TIMES LEFT REAR DOOR AMBIANCE ILLUMINATION LEFT REAR DOOR CONTROL UNIT (IN LEFT REAR DOOR) LEFT REAR DOOR EXIT LAMP LEFT REAR DOOR EXTERIOR DOOR HANDLE ILLUMINATION LEFT REAR DOOR HANDLE AMBIANCE ILLUMINATION LEFT REAR DOOR LOCK LEFT REAR DOOR POWER CLOSING ACTUATOR MOTOR LEFT REAR DOOR STOWAGE COMPARTMENT ILLUMINATION LOCK MOT GND/(+) MOT GND/(+) SIG ORG/ WIRE ORG/GRN WIRE OVERHEAD CONTROL PANEL CONTROL UNIT PASSENGER-SIDE A-PILLAR FUSE BOX PNK/BLU WIRE PRE-LOCKING POSITION MICROSWITCH RED WIRE RED/BLU WIRE RED/YEL WIRE RIGHT REAR DOOR WARNING LAMP SIG SIG (+) UNLOCK SIG 31 W/ INCREASED THEFT PROTECTION W/ INTERIOR MONITORING 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

BLU WIRE BLU/BLK WIRE BRN WIRE BRN/BLU WIRE EMERGENCY CALL SYSTEM ANTENNA 1 EMERGENCY CALL SYSTEM ANTENNA 2 FRONT CENTER CONSOLE USB CONNECTOR GRN WIRE GRY/BLU WIRE HEAD UNIT MOS MOST MOST DATA BUS CIRCUIT MULTIMEDIA CONNECTION UNIT NCA WIRE ORG/ WIRE RED WIRE RED/BLU WIRE RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE SHIELD SIG TV 1 ANTENNA AMPLIFIER TV 3 ANTENNA AMPLIFIER TV TUNER CONTROL UNIT (RIGHT SIDE OF LUGGAGE COMPT) USB USB GND USB H USB H BS SHIELD USB L W/O WIRELESS PHONE CHARGING AT FRONT, ANTENNA WAKE-UP WHT/YEL WIRE WINDSHIELD ANTENNA

BLK WIRE CELLULAR TELEPHONE SYSTEM ANTENNA AMPLIFIER/ COMPENSATOR FM 2, DAB, TV ANTENNA AMPLIFIER FM DABIII FM, AM, CL, DAB, KEYLESS-GO ANTENNA AMPLIFIER FUSE 317 FUSE 320 FUSE 414 HOT AT ALL TIMES KEYLESS-GO CONTROL UNIT LEFT "C" PILLAR) MOBILE PHONE CRADLE CONTROL UNIT NCA WIRE PASSENGER-SIDE A-PILLAR FUSE BOX REAR FUSE, RELAY MODULE REAR WINDOW ANTENNA (IN REAR WINDOW) RED WIRE RED/BLU WIRE RED/GRY WIRE RED/WHT WIRE RED/YEL WIRE SHIELD SIG TELEPHONE, ACTIVE PARKING ASSIST/ STATIONARY HEATER ANTENNA CHANGEOVER SWITCH W/ WIRELESS MOBILE PHONE CHARGING W/O WIRELESS MOBILE PHONE CHARGING WHT/YEL 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

ANTI-LOCK BRAKES SYSTEM BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLK/RED WIRE BLK/YEL WIRE BLU WIRE BLU/GRY WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/BLK WIRE BRN/GRN WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE CAN B H CAN B L COC COMPUTER DATA LINES SYSTEM CRASH ANALOG DOOR LOCK, TRUNK, TAILGATE, FUEL DOORS SYSTEMS DOOR LOCKS, ANTI-THEFT SYSTEMS DOOR LOCKS, ANTI-THEFT, HORNS SYSTEMS DRIVER-SIDE FUSE, RELAY MODULE ENGINE CONTROLS SYSTEM ENGINE FUSE, RELAY MODULE EXTERIOR LIGHTS, INSTRUMENT CLUSTER SYSTEMS EXTERIOR LIGHTS, INTERIOR LIGHTS SYSTEMS FRONT SAM CONTROL UNIT (LEFT END OF DASH) FUSE 123 FUSE 200 FUSE 201 GRN WIRE GRN/YEL WIRE GRY/BLU WIRE GRY/BRN WIRE HAZARD LIGHT HAZARD SIG HEADLIGHTS, EXTERIOR LIGHTS SYSTEMS HEADLIGHTS, EXTERIOR LIGHTS SYSTEMS EXTERIOR LIGHTS SYSTEMS HEADLIGHTS, INTERIOR LIGHTS, EXTERIOR LIGHTS SYSTEMS HEADLIGHTS, MIRRORS, EXTERIOR LIGHTS, AIR CONDITIONING SYSTEMS HORNS SYSTEM HOT AT ALL TIMES HOT W/ ENGINE COMPARTMENT TERMINAL 15 RELAY ENERGIZED INSTRUMENT CLUSTER SYSTEM INSTRUMENT CLUSTER, AIR CONDITIONING SYSTEMS LIN LIN 1 ORG/ WIRE PNK WIRE POWER DISTRIBUTION SYSTEM REAR SAM CONTROL UNIT RED WIRE RED/BLU WIRE RED/BRN WIRE RED/GRY WIRE RED/WHT WIRE RED/YEL WIRE REL GND REL O (+) REL O GND SIG SIG (1) SIG (2) SIG 15 SIG 3 STARTING/CHARGING SYSTEM SUPPLEMENTAL RESTRAINTS SYSTEM VIO WIRE WARNING, ANTI-LOCK BRAKES SYSTEM WHT/RED WIRE WIPER/WASHER SYSTEM WSR YEL 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