Mercedes-Benz CLS-class C257 (2017-2021) (under front passenger's seat) Wiring diagrams

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

BLK WIRE BLK/VIO WIRE BLU/GRN WIRE BRN WIRE BRN/GRN WIRE BRN/RED WIRE BRN/WHT WIRE CAN B H CAN B L COMPUTER DATA LINES SYSTEM DCS DCS GND GRN WIRE GRN/YEL WIRE LEFT FRONT DOOR AMBIANCE ILLUMINATION LEFT FRONT DOOR CONTROL UNIT 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 STOWAGE COMPARTMENT ILLUMINATION LEFT FRONT DOOR WARNING LAMP LIN ORG/GRN WIRE PRE-LOCKING POSITION MICROSWITCH RED WIRE RED/BLU WIRE RED/YEL WIRE RIGHT REAR DOOR AMBIANCE ILLUMINATION 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 STOWAGE COMPARTMENT ILLUMINATION RIGHT REAR DOOR WARNING LAMP SIG VIO WIRE W/ PREMIUM AMBIANCE LIGHTING W/ PREMIUM AMBIENT ILLUMINATION W/ PREMIUM AMBIENT LIGHTING YEL WIRE YEL/BLU WIRE YEL/GRY WIRE YEL/RED WIRE

BLK WIRE BLK/WHT WIRE BLU WIRE BLU/WHT WIRE BRN WIRE BRN/BLU WIRE BRN/RED WIRE BRN/WHT WIRE CAN B H CAN B L COMPUTER DATA LINES SYSTEM DRIVER SEAT CONTROL UNIT DRIVER SEAT HEATER CONTROL UNIT FRONT PASSENGER SEAT CONTROL UNIT FRONT PASSENGER SEAT HEATER CONTROL UNIT FUSE 306 FUSE 453 HEAT (+) HOT AT ALL TIMES LEFT FRONT DOOR CONTROL UNIT LEFT FRONT SEAT BACKREST HEATER PAD LEFT FRONT SEAT BACKREST HEATER PAD TEMPERATURE SENSOR LEFT FRONT SEAT CLIMATE CONTROL SWITCH GROUP LEFT FRONT SEAT CUSHION HEATER PAD LEFT FRONT SEAT SITTING SURFACE HEATER PAD TEMPERATURE SENSOR NCA WIRE PASSENGER-SIDE A-PILLAR FUSE BOX REAR FUSE, RELAY MODULE RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRY WIRE RED/WHT WIRE RIGHT FRONT DOOR CONTROL UNIT RIGHT FRONT SEAT BACKREST HEATER PAD RIGHT FRONT SEAT BACKREST HEATER PAD TEMPERATURE SENSOR RIGHT FRONT SEAT CLIMATE CONTROL SWITCH GROUP RIGHT FRONT SEAT CUSHION HEATER PAD RIGHT FRONT SEAT SITTING SURFACE HEATER PAD TEMPERATURE SENSOR SIG 31 TEMP VIO WIRE

BLK/WHT WIRE BLU/WHT WIRE BRN WIRE BRN/GRN WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE CAN B H CAN B L COMPUTER DATA LINES SYSTEM DRIVER SEAT CONTROL UNIT DRIVER-SIDE FUSE, RELAY MODULE FUSE 203 FUSE 302 FUSE 303 FUSE 304 HOT AT ALL TIMES LEFT FRONT BACKREST SEAT VENTILATION MOTORS LEFT FRONT DOOR CONTROL UNIT LEFT FRONT SEAT ADJUSTABLE SEAT CUSHION LENGTH HEATER PAD LEFT FRONT SEAT ADJUSTMENT SWITCH GROUP LEFT FRONT SEAT BACKREST HEATER PAD LEFT FRONT SEAT BACKREST SIDE BOLSTER HEATER PAD LEFT FRONT SEAT BACKREST SIDE BOLSTER HEATER PAD TEMPERATURE SENSOR LEFT FRONT SEAT CLIMATE CONTROL SWITCH GROUP LEFT FRONT SEAT CUSHION HEATER PAD LEFT FRONT SEAT CUSHION SEAT VENTILATION MOTORS LEFT FRONT SEAT CUSHION SIDE BOLSTER HEATER PAD LEFT FRONT SEAT CUSHION SIDE BOLSTER HEATER PAD TEMPERATURE SENSOR MOT GND/(+) NCA WIRE PASSENGER-SIDE A-PILLAR FUSE BOX RED WIRE RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE SIG TEMP VIO WIRE W/ SEAT HEATER W/ SEAT HEATER PLUS W/ SEAT HEATER, SEAT HEATER PLUS, SEAT CLIMATE CONTROL

BLU WIRE BRN WIRE BRN/GRN WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE CAN B H CAN B L COMPUTER DATA LINES SYSTEM FRONT PASSENGER SEAT CONTROL UNIT MOT GND/(+) NCA WIRE RED WIRE RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE RIGHT FRONT BACKREST SEAT VENTILATION MOTORS RIGHT FRONT DOOR CONTROL UNIT RIGHT FRONT SEAT ADJUSTABLE SEAT CUSHION LENGTH HEATER PAD RIGHT FRONT SEAT ADJUSTMENT SWITCH GROUP RIGHT FRONT SEAT BACKREST HEATER PAD RIGHT FRONT SEAT BACKREST SIDE BOLSTER HEATER PAD RIGHT FRONT SEAT BACKREST SIDE BOLSTER HEATER PAD TEMPERATURE SENSOR RIGHT FRONT SEAT CLIMATE CONTROL SWITCH GROUP RIGHT FRONT SEAT CUSHION HEATER PAD RIGHT FRONT SEAT CUSHION SEAT VENTILATION MOTORS RIGHT FRONT SEAT CUSHION SIDE BOLSTER HEATER PAD RIGHT FRONT SEAT CUSHION SIDE BOLSTER HEATER PAD TEMPERATURE SENSOR SIG TEMP VIO WIRE W/ SEAT HEATER W/ SEAT HEATER PLUS W/ SEAT HEATER, SEAT HEATER PLUS, SEAT CLIMATE CONTROL

AC HOUSING, ANALOG CLOCK BRN WIRE CLIMATE CONTROL OPERATING UNIT CLIMATE CONTROL UNIT DRIVER SEAT CONTROL UNIT DRIVER SEAT HEATER CONTROL UNIT DRIVER SEAT LUMBAR SUPPORT ADJUSTMENT CONTROL UNIT DRIVER SEAT LUMBAR SUPPORT PNEUMATIC PUMP DRIVER SEAT SIDE PRE-SAFE PULSE SQUIB DRIVER SIDE BAG SQUIB FRONT PASSENGER SEAT CONTROL UNIT FRONT PASSENGER SEAT HEATER CONTROL UNIT FRONT PASSENGER SEAT LUMBAR SUPPORT ADJUSTMENT CONTROL UNIT FRONT PASSENGER SEAT LUMBAR SUPPORT PNEUMATIC PUMP FRONT PASSENGER SEAT PARTIALLY ELECTRIC SEAT ADJUSTMENT SWITCH FRONT PASSENGER SEAT SIDE PRE-SAFE PULSE SQUIB FRONT PASSENGER SIDE AIR VENT AMBIANCE ILLUMINATION FRONT PASSENGER SIDE BAG SQUIB FRONT SAM CONTROL UNIT FRONT SEAT HEATER/ SEAT VENTILATION CONTROL UNIT GLOVE BOX LAMP/ SWITCH LEFT FRONT CENTER CONSOLE AMBIANCE ILLUMINATION LEFT FRONT MULTICONTOUR SEAT CONTROL UNIT REAR AIR CONDITIONING OPERATING UNIT RIGHT FRONT MULTICONTOUR SEAT CONTROL UNIT RIGHT FRONT REVERSIBLE EMERGENCY TENSIONING RETRACTOR RIGHT REAR DOOR CONTROL UNIT SEPARATE TRUNK LID LOCK SWITCH UPPER CONTROL PANEL CONTROL UNIT

BLU WIRE BRN WIRE BRN/BLK WIRE BRN/RED WIRE BRN/WHT WIRE CAN B H CAN B L COMPUTER DATA LINES SYSTEM DRIVER TRUNK LID/ LIFTGATE CONTROL BUTTON DRIVER-SIDE FUSE, RELAY MODULE FUSE 203 FUSE 214 FUSE 301 FUSE 302 GRY/RED WIRE HOT AT ALL TIMES LEFT FRONT DOOR CENTRAL LOCKING INTERIOR SWITCH LEFT FRONT DOOR CONTROL UNIT LEFT REAR DOOR CONTROL UNIT LEFT REAR POWER WINDOW SWITCH PASSENGER-SIDE A-PILLAR FUSE BOX PASSENGER-SIDE POWER WINDOW SWITCH RED WIRE RED/BLU WIRE RED/YEL WIRE RIGHT FRONT DOOR CENTRAL LOCKING INTERIOR SWITCH RIGHT FRONT DOOR CONTROL UNIT RIGHT REAR DOOR CONTROL UNIT RIGHT REAR POWER WINDOW SWITCH WHT/BLK WIRE WHT/GRN WIRE

BLU WIRE BRN WIRE BRN/WHT WIRE DRIVER SEAT LUMBAR SUPPORT ADJUSTMENT CONTROL UNIT DRIVER SEAT LUMBAR SUPPORT ADJUSTMENT SWITCH DRIVER SEAT LUMBAR SUPPORT PNEUMATIC PUMP FRONT PASSENGER SEAT LUMBAR SUPPORT ADJUSTMENT CONTROL UNIT FRONT PASSENGER SEAT LUMBAR SUPPORT ADJUSTMENT SWITCH FRONT PASSENGER SEAT LUMBAR SUPPORT PNEUMATIC PUMP FUSE 4 FUSE 5 HOT AT ALL TIMES MULTIPLE FUSE 1 PASSENGER-SIDE A-PILLAR FUSE BOX PUMP RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE SIG WHT WIRE

BLK WIRE BLK/BLU WIRE BRN WIRE FRONT PASSENGER SEAT BACKREST INCLINATION ADJUSTMENT MOTOR FRONT PASSENGER SEAT HEIGHT ADJUSTMENT MOTOR FRONT PASSENGER SEAT PARTIALLY ELECTRIC SEAT ADJUSTMENT SWITCH FUSE 403 HOT W/ BACKUP RELAY ENERGIZED REAR FUSE, RELAY MODULE RED WIRE RED/GRN WIRE RED/YEL WIRE SIG

BLU WIRE BRN WIRE BRN/BLK WIRE BRN/RED WIRE BRN/WHT WIRE CAN B H CAN B L CAN-B H AAG COMPUTER DATA LINES SYSTEM DRIVER-SIDE FUSE, RELAY MODULE FUSE 214 FUSE 301 FUSE 451 HOT AT ALL TIMES LEFT REAR BACKREST HEATER PAD LEFT REAR DOOR CONTROL UNIT LEFT REAR SEAT CLIMATE CONTROL SWITCH GROUP LEFT REAR SEAT SITTING SURFACE HEATED CUSHION NCA WIRE PASSENGER-SIDE A-PILLAR FUSE BOX REAR FUSE, RELAY MODULE REAR SAM CONTROL UNIT REAR SEAT HEATERS CONTROL UNIT RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE RIGHT REAR BACKREST HEATER PAD RIGHT REAR DOOR CONTROL UNIT RIGHT REAR SEAT CLIMATE CONTROL SWITCH GROUP RIGHT REAR SEAT SITTING SURFACE HEATED CUSHION SIG VIO WIRE