Mercedes-Benz CLS-class AMG C257 facelift (2021-2024) red/yel Wiring diagrams

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 DRIVER-SIDE FUSE, RELAY MODULE 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/(+) ORG/ WIRE ORG/GRN WIRE OVERHEAD CONTROL PANEL CONTROL UNIT PASSENGER-SIDE A-PILLAR FUSE BOX PNK/BLU WIRE PRE-LOCKING POSITION MICRO SWITCH RED WIRE RED/BLU WIRE RED/YEL WIRE RIGHT REAR DOOR WARNING LAMP SIG SIG (+) UNLOCK SIG GND W/ INCREASED THEFT PROTECTION W/ INTERIOR MONITORING W/ POWER CLOSING W/ PREMIUM AMBIENT LIGHTING W/O POWER CLOSING 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 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 (IF EQUIPPED) 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 GND STATIONARY HEATER UNIT VALVE VEHICLE INTERIOR PREFUSE BOX WHT WIRE WHT/BLU WIRE WINDSHIELD HEATER CONTROL UNIT YEL WIRE YEL/VIO WIRE

AIR QUALITY SENSOR BLU WIRE BLU/GRN WIRE BLU/YEL WIRE BRN WIRE BRN/BLU WIRE BRN/VIO WIRE COOLANT CIRCULATION PUMP DEFROSTER/ FOOTWELL/ CENTER AIR VENT FLAP ACTUATOR MOTOR DRIVER SIDE AIR VENT IONIZER ELECTRIC REFRIGERANT COMPRESSOR FRESH AIR/ RAM AIR/AIR RECIRCULATION FLAP ACTUATOR MOTOR FUSE 3 FUSE 855 GLOVE BOX LAMP) GLOVE BOX LAMP/ SWITCH GRN/VIO WIRE GRY/RED WIRE HOT AT ALL TIMES LEFT BLENDING AIR FLAP ACTUATOR LEFT FOOTWELL VENT/CENTER AIR VENT/ SIDE AIR VENT, REAR VENT FLAP ACTUATOR MOTOR LEFT SIDE AIR OUTLET TEMPERATURE SENSOR NCA WIRE PARTITION WALL BUSBAR PERFUME ATOMIZER GENERATOR (W/ AIR QUALITY PACKAGE) (IN GLOVE COMPT) PNK WIRE REAR AIR CONDITIONING OPERATING UNIT REAR BLEND AIR FLAP ACTUATOR MOTOR RED WIRE RED/VIO WIRE RED/WHT WIRE RED/YEL WIRE RIGHT BLENDING AIR FLAP ACTUATOR RIGHT END OF DASH) RIGHT FOOTWELL VENT/ CENTER AIR VENT, SIDE AIR VENT FLAP ACTUATOR MOTOR RIGHT SIDE AIR OUTLET TEMPERATURE SENSOR SIG GND STATIONARY HEATER RADIO REMOTE CONTROL RECEIVER W/ AIR QUALITY PACKAGE WHT/BLU WIRE 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/VIO 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 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/VIO WIRE RED/WHT WIRE RED/YEL WIRE REFRIGERANT COMPRESSOR REFRIGERANT PRESSURE SENSOR (AT BOTTOM LEFT SIDE OF RADIATOR) SIG 87 SIG GND YEL WIRE YEL/BLK WIRE

BRN WIRE BRN/RED WIRE CAN B H CAN B L COMPUTER DATA LINES SYSTEM DRIVER-SIDE FUSE, RELAY MODULE EC GND EC+ FRONT SAM CONTROL UNIT FUSE 203 FUSE 302 FUSE 305 FUSE 316 HOT AT ALL TIMES INSIDE REAR VIEW MIRROR LEFT FRONT DOOR CONTROL UNIT LEFT OUTSIDE MIRROR TURN SIGNAL LAMP NCA WIRE OVERHEAD CONSOLE OVERHEAD CONTROL PANEL CONTROL UNIT PASSENGER-SIDE A-PILLAR FUSE BOX RAIN/LIGHT SENSOR W/ ADDITIONAL FUNCTIONS RED WIRE RED/WHT WIRE RED/YEL WIRE RIGHT FRONT DOOR CONTROL UNIT RIGHT OUTSIDE MIRROR TURN SIGNAL LAMP YEL WIRE

BATTERY DISCONNECT SWITCH RELAY BATTERY SENSOR BLK WIRE BLU/WHT WIRE BRN WIRE BRN/RED WIRE BRN/VIO WIRE CAN B H CAN B L CAN HMI H CAN HMI L CAN L H CAN L L CIRCUIT 30 TERMINAL BLOCK COMPUTER DATA LINES SYSTEM DC/DC CONVERTER CONTROL UNIT DRIVER-SIDE FUSE, RELAY MODULE FRONT SAM CONTROL UNIT FUSE 202 FUSE 315 FUSE 6 HOT AT ALL TIMES INSTRUMENT CLUSTER INTEGRATED STARTER GENERATOR ME-SFI (ME) CONTROL UNIT MPAC U MPAC V MPAC X MPAC Y MPAC Z NCA WIRE ON-BOARD ELECTRICAL SYSTEM BATTERY ORG/ WIRE ORG/WHT WIRE PASSENGER-SIDE A-PILLAR FUSE BOX POWER DISTRIBUTION SYSTEM PYRO FUSE (RIGHT SIDE OF DASH) RED WIRE RED/BLK WIRE RED/VIO WIRE RED/WHT (OR RED) WIRE RED/WHT WIRE RED/YEL WIRE SIG STARTER GENERATOR CONTROL UNIT VIO WIRE VIO/WHT WIRE YEL WIRE

BLK WIRE BLK/BRN WIRE BLU WIRE BRN WIRE BRN/RED WIRE CAN B H CAN B L CAN H H CAN H L CAN HMI H CAN HMI L CAN PER H CAN PER L COC COMPUTER DATA LINES SYSTEM DRIVER-SIDE FUSE, RELAY MODULE ELECTRIC PARKING BRAKE SWITCH ELECTRONIC STABILITY PROGRAM CONTROL UNIT ENGINE FUSE, RELAY MODULE EXTERIOR LIGHTS SWITCH FRONT SAM CONTROL UNIT FUSE 110 FUSE 128 FUSE 133 FUSE 200 FUSE 305 GRN WIRE GRN/RED WIRE GRN/WHT WIRE GRY WIRE GRY/BLU WIRE HOT AT ALL TIMES HOT W/ ENGINE COMPARTMENT TERMINAL 15 RELAY ENERGIZED INSTRUMENT CLUSTER LEFT FRONT LAMP UNIT LEFT FRONT LEVEL SENSOR LEFT REAR LEVEL SENSOR OVERHEAD CONSOLE PASSENGER-SIDE A-PILLAR FUSE BOX PNK SENS (+) SIG 3 WIRE PNK/RED WIRE RAIN/LIGHT SENSOR W/ ADDITIONAL FUNCTIONS RED WIRE RED/GRN WIRE RED/YEL WIRE RIGHT FRONT LAMP UNIT SENS SIG SIG (1) SIG (2) SIG 3 SIG 3 PNK SIG WIRE SIG 4 VIO WIRE VIO/WHT WIRE WHT/BLK WIRE WHT/YEL WIRE YEL WIRE

BLK WIRE BLK/BRN WIRE BLU WIRE BRN WIRE BRN/RED WIRE CAN B H CAN B L CAN H H CAN H L CAN HMI H CAN HMI L CAN PER H CAN PER L COC COMPUTER DATA LINES SYSTEM DRIVER-SIDE FUSE, RELAY MODULE ELECTRIC PARKING BRAKE SWITCH ELECTRONIC STABILITY PROGRAM CONTROL UNIT ENGINE FUSE, RELAY MODULE EXTERIOR LIGHTS SWITCH FRONT SAM CONTROL UNIT FUSE 110 FUSE 128 FUSE 133 FUSE 200 FUSE 305 GRN WIRE GRN/WHT WIRE GRY WIRE GRY/BLU WIRE HOT AT ALL TIMES HOT W/ ENGINE COMPARTMENT TERMINAL 15 RELAY ENERGIZED INSTRUMENT CLUSTER LEFT FRONT LAMP UNIT LEFT REAR LEVEL SENSOR OVERHEAD CONSOLE PASSENGER-SIDE A-PILLAR FUSE BOX PNK SENS (+) SIG 3 WIRE PNK/RED WIRE RAIN/LIGHT SENSOR W/ ADDITIONAL FUNCTIONS RED WIRE RED/YEL WIRE RIGHT FRONT LAMP UNIT SENS SIG SIG (1) SIG (2) SIG 3 SIG 3 PNK SENS (+) WIRE SIG 4 VIO WIRE VIO/WHT WIRE WHT/BLK WIRE YEL WIRE

58 D BATTERY DISCONNECT SWITCH RELAY BATTERY SENSOR BLK WIRE BLK/WHT WIRE BLU WIRE BLU/WHT WIRE BRN WIRE BRN/RED WIRE BRN/VIO WIRE CAN B H CAN B L CAN L H CAN L L CIRCUIT 30 TERMINAL BLOCK COMPUTER DATA LINES SYSTEM DC/DC CONVERTER CONTROL UNIT DRIVER-SIDE FUSE, RELAY MODULE ELECTRONIC IGNITION SWITCH CONTROL UNIT FLEX-E BP PNK FLEX-E BM WIRE FRONT SAM CONTROL UNIT FULLY INTEGRATED TRANSMISSION CONTROL ELECTRIC CONTROLLER UNIT FUSE 202 FUSE 315 FUSE 6 GRN WIRE HOT AT ALL TIMES INTEGRATED STARTER GENERATOR KEYLESS GO START/STOP BUTTON ME-SFI (ME) CONTROL UNIT MPAC U MPAC V MPAC X MPAC Y MPAC Z NCA WIRE ON-BOARD ELECTRICAL SYSTEM BATTERY ORG/ WIRE ORG/WHT WIRE PASSENGER-SIDE A-PILLAR FUSE BOX POWER DISTRIBUTION SYSTEM PYRO- FUSE RED WIRE RED/BLK WIRE RED/VIO WIRE RED/WHT (OR RED) WIRE RED/WHT WIRE RED/YEL WIRE SIG SIG (1) SIG (2) SIG 3 STARTER GENERATOR CONTROL UNIT STEERING COLUMN MODULE CONTROL UNIT WHT WIRE YEL WIRE

BLK/BLU WIRE BLK/YEL WIRE BRN WIRE BRN/RED WIRE BRN/YEL WIRE CAN B H CAN B L CAN HMI H CAN HMI L COMPUTER DATA LINES SYSTEM DRIVER-SIDE FUSE, RELAY MODULE ENGINE FUSE, RELAY MODULE FLEX-E BM FLEX-E BP FRONT SAM CONTROL UNIT FUSE 111 FUSE 200 FUSE 211 FUSE 305 GRN WIRE HOT AT ALL TIMES INSTRUMENT CLUSTER OVERHEAD CONSOLE PASSENGER-SIDE A-PILLAR FUSE BOX PNK WIRE RAIN/LIGHT SENSOR W/ ADDITIONAL FUNCTIONS RED WIRE RED/BLK WIRE RED/BLU WIRE RED/YEL WIRE SIG SIG GND SPRAY NOZZLE HOSE HEATER STEERING COLUMN MODULE CONTROL UNIT VIO WIRE VIO/WHT WIRE WINDSHIELD WASHER FLUID LEVEL INDICATOR SWITCH WINDSHIELD WASHER SYSTEM PUMP WIPER MOTOR YEL WIRE