Mercedes-Benz S-class W222/C217/A217 facelift (2017-2020) yel/red Wiring diagrams

BLU WIRE BRN WIRE BRN/BLU WIRE BRN/RED WIRE BRN/VIO WIRE CAN B H CAN B L COMPUTER DATA LINES SYSTEM DRIVER SEAT CONTROL UNIT FUSE 303 HK SF VL HK SL VL HOT AT ALL TIMES LEFT FRONT BACKREST HEATED CUSHION LEFT FRONT BACKREST SEAT VENTILATION MOTORS LEFT FRONT DOOR CONTROL UNIT LEFT FRONT SEAT ADJUSTMENT SWITCH GROUP LEFT FRONT SEAT BACKREST SIDE BOLSTER HEATER PAD LEFT FRONT SEAT CUSHION LENGTH SWITCH LEFT FRONT SEAT CUSHION SEAT VENTILATION MOTORS LEFT FRONT SEAT CUSHION SIDE BOLSTER HEATER PAD LEFT FRONT SEAT HEATER SWITCH LEFT FRONT SEAT SITTING SURFACE HEATED CUSHION LEFT FRONT SEAT VENTILATION SWITCH PASSENGER-SIDE A-PILLAR FUSE BOX RED WIRE RED/BLU WIRE RED/VIO WIRE RED/WHT WIRE SEDAN UB (+) VIO WIRE W/O VENTILATION WHT WIRE YEL WIRE YEL/RED WIRE

BLU WIRE BRN WIRE BRN/BLU WIRE BRN/RED WIRE BRN/VIO WIRE CAN B H CAN B L COMPUTER DATA LINES SYSTEM FRONT PASSENGER SEAT CONTROL UNIT FUSE 304 HK SF VL HK SL VL HOT AT ALL TIMES PASSENGER-SIDE A-PILLAR FUSE BOX RED WIRE RED/BLU WIRE RED/VIO WIRE RED/WHT WIRE RIGHT FRONT BACKREST HEATED CUSHION RIGHT FRONT BACKREST SEAT VENTILATION MOTORS RIGHT FRONT DOOR CONTROL UNIT RIGHT FRONT SEAT ADJUSTMENT SWITCH GROUP RIGHT FRONT SEAT BACKREST SIDE BOLSTER HEATER PAD RIGHT FRONT SEAT CUSHION LENGTH SWITCH RIGHT FRONT SEAT CUSHION SEAT VENTILATION MOTORS RIGHT FRONT SEAT CUSHION SIDE BOLSTER HEATER PAD RIGHT FRONT SEAT HEATER SWITCH RIGHT FRONT SEAT SITTING SURFACE HEATED CUSHION RIGHT FRONT SEAT VENTILATION SWITCH SEDAN UB (+) VIO WIRE W/O VENTILATION WHT WIRE YEL WIRE YEL/RED WIRE

AIR CONDITIONING, COOLING FANS, INSTRUMENT CLUSTER SYSTEMS ANTI-LOCK BRAKES, INSTRUMENT CLUSTER, WARNING SYSTEMS BLK WIRE BLK/RED WIRE BLK/YEL WIRE BLU WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/GRN WIRE CAN HMI L DOOR LOCKS, ANTI-THEFT SYSTEMS DRIVER-SIDE FUSE, RELAY MODULE ENGINE CONTROLS SYSTEM ENGINE FUSE, RELAY MODULE FRONT SAM CONTROL UNIT (LEFT KICK PANEL) FUSE 123 FUSE 200 FUSE 201 FUSE 46 FUSE 49 GRY/BRN WIRE GRY/GRN WIRE HEADLIGHTS, EXTERIOR LIGHTS SYSTEMS HORNS SYSTEM HOT AT ALL TIMES HOT W/ ENGINE COMPARTMENT TERMINAL 15 RELAY ENERGIZED NAVIGATION, SOUND SYSTEMS PNK/RED WIRE POWER DISTRIBUTION SYSTEM REAR PREFUSE BOX RED WIRE RED/BLK WIRE RED/WHT WIRE SIG STARTING/CHARGING SYSTEM SUPPLEMENTAL RESTRAINTS SYSTEM WB H WBK BEL WIPER/WASHER SYSTEM WIPER/WASHER, HEADLIGHTS, EXTERIOR LIGHTS, MIRRORS SYSTEMS YEL WIRE YEL/GRN WIRE YEL/RED WIRE

BLK WIRE BLU/BRN WIRE BRN WIRE BRN/RED WIRE CAN B H CAN B L CAN H H CAN H L CAN HMI H CAN HMI L COC COMBINATION SWITCH 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 FLEX-E BP PNK FLEX-E BM WIRE FRONT SAM CONTROL UNIT FUSE 126 FUSE 200 FUSE 205 FUSE 305 GRN WIRE GRY/BLU WIRE GRY/YEL WIRE HEADLAMP FLASHER/ HIGH BEAM SWITCH HOT AT ALL TIMES HOT W/ ENGINE COMPARTMENT TERMINAL 15 RELAY ENERGIZED INSTRUMENT CLUSTER PASSENGER-SIDE A-PILLAR FUSE BOX PNK SIG WIRE PNK/RED WIRE RAIN/LIGHT SENSOR W/ ADDITIONAL FUNCTIONS RED WIRE RED/WHT WIRE SIG SIG (1) SIG (2) SIG 3 SIG 3 PNK SIG WIRE STEERING COLUMN MODULE CONTROL UNIT VIO WIRE VIO/WHT WIRE YEL WIRE YEL/GRN WIRE YEL/RED WIRE YEL/WHT WIRE

BLK WIRE BLU/BRN WIRE BRN WIRE BRN/RED WIRE CAN B H CAN B L CAN H H CAN H L CAN HMI H CAN HMI L COC COMBINATION SWITCH 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 FLEX-E BP PNK FLEX-E BM WIRE FRONT SAM CONTROL UNIT FUSE 126 FUSE 200 FUSE 205 FUSE 305 GRN WIRE GRY/BLU WIRE GRY/YEL WIRE HEADLAMP FLASHER/ HIGH BEAM SWITCH HOT AT ALL TIMES HOT W/ ENGINE COMPARTMENT TERMINAL 15 RELAY ENERGIZED INSTRUMENT CLUSTER PASSENGER-SIDE A-PILLAR FUSE BOX PNK SIG WIRE PNK/RED WIRE RAIN/LIGHT SENSOR W/ ADDITIONAL FUNCTIONS RED WIRE RED/WHT WIRE SIG SIG (1) SIG (2) SIG 3 SIG 3 PNK SIG WIRE STEERING COLUMN MODULE CONTROL UNIT VIO WIRE VIO/WHT WIRE YEL WIRE YEL/GRN WIRE YEL/RED WIRE YEL/WHT WIRE

ACTIVE BODY CONTROL CONTROL UNIT BLK WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/YEL WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE CENTER LEFT REAR PARKING SYSTEM DISTANCE SENSOR CENTER RIGHT REAR PARKING SYSTEM DISTANCE SENSOR COUPE CONVERTIBLE DATA FLEX-E BM FLEX-E BP FUSE 468 FUSE 49 GRN WIRE GRN/YEL WIRE HOT AT ALL TIMES INNER LEFT REAR PARKING SYSTEM DISTANCE SENSOR INNER RIGHT REAR PARKING SYSTEM DISTANCE SENSOR OUTER LEFT REAR PARKING SYSTEM DISTANCE SENSOR OUTER RIGHT REAR PARKING SYSTEM DISTANCE SENSOR PARKING SYSTEM CONTROL UNIT PNK WIRE REAR FUSE, RELAY MODULE REAR PREFUSE BOX RED WIRE RED/WHT WIRE SEDAN WAKE-UP WHT/RED WIRE WHT/YEL WIRE YEL/RED WIRE YEL/VIO WIRE YEL/WHT WIRE

BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BRN WIRE BRN/BLU WIRE BRN/RED WIRE CAN B H CAN B L CENTER LEFT FRONT PARKING SYSTEM DISTANCE SENSOR CENTER RIGHT FRONT PARKING SYSTEM DISTANCE SENSOR COMPUTER DATA LINES SYSTEM FRONT CAMERA COVER MOTOR GRN/YEL WIRE INNER LEFT FRONT PARKING SYSTEM DISTANCE SENSOR INNER RIGHT FRONT PARKING SYSTEM DISTANCE SENSOR MULTI-FUNCTION ANTENNA MULTI-FUNCTION TELEPHONY NCA WIRE OUTER LEFT FRONT PARKING SYSTEM DISTANCE SENSOR OUTER RIGHT FRONT PARKING SYSTEM DISTANCE SENSOR PARKING SYSTEM SPEAKER PWM RADIO RED WIRE RED/WHT WIRE REMOTE CONTROL FOR STATIONARY HEATER, REMOTE PARK-PILOT, CAR REMOTE PARK-PILOT REMOTE PARK-PILOT/ STATIONARY HEATER ANTENNA SPLITTER SHIELD SIG SIRIUS SATELLITE TELEPHONE ANTENNA SPLITTER TELEPHONE MODULE W/ BLUETOOTH, MULTI-FUNCTION TELEPHONE, STATIONARY HEATER, REMOTE PARK-PILOT ANTENNA CHANGEOVER SWITCH TELEPHONY TELEPHONY PACKAGE, W/ REMOTE PARK-PILOT WAKE-UP WHT/RED WIRE WHT/YEL WIRE YEL/RED WIRE YEL/VIO WIRE YEL/WHT WIRE

AMBIENT LAMP AUTOMATIC DIMMING MIRROR BLK WIRE BLK/BLU WIRE BRN WIRE BRN/GRY WIRE BRN/RED WIRE CAN B H CAN B L COMPUTER DATA LINES SYSTEM DRIVER-SIDE FUSE, RELAY MODULE FORWARD AUTOMATIC DIMMING MIRROR LIGHT SENSOR FRONT SAM CONTROL UNIT FUSE 203 FUSE 302 FUSE 305 FUSE 316 GARAGE DOOR OPENER GARAGE DOOR OPENER BUTTON 1 GARAGE DOOR OPENER BUTTON 2 GARAGE DOOR OPENER BUTTON 3 GARAGE DOOR OPENER INDICATOR LAMP GRN WIRE HOT AT ALL TIMES INSIDE REAR VIEW MIRROR INSIDE REAR VIEW MIRROR DIMMING LEFT FRONT DOOR CONTROL UNIT LEFT OUTSIDE MIRROR LEFT READING LAMP NCA WIRE OVERHEAD CONTROL PANEL CONTROL UNIT PASSENGER-SIDE A-PILLAR FUSE BOX RAIN/LIGHT SENSOR W/ ADDITIONAL FUNCTIONS REARWARD AUTOMATIC DIMMING MIRROR LIGHT SENSOR RED WIRE RED/WHT WIRE RGB-LIN RIGHT FRONT DOOR CONTROL UNIT RIGHT OUTSIDE MIRROR RIGHT READING LAMP SPG ABBL VIO WIRE WHT WIRE YEL/RED WIRE

3.0L TURBO 4.0L TURBO A S STRH A S STRL BATTERY SENSOR BLU WIRE BLU/WHT WIRE BRN WIRE BRN/WHT WIRE CAN C H CAN C L CAN HMI H CAN HMI L COMPUTER DATA LINES SYSTEM ELECTRONIC IGNITION SWITCH CONTROL UNIT EMERGENCY START SYSTEM RELAY EMERGENCY START SYSTEM RELAY (HIGH CURRENT) ENGINE COMPARTMENT PREFUSE BOX ENGINE FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) FLEX-E BP FUSE 113 FUSE 127 FUSE 8 GRN WIRE GRN/WHT WIRE GUARD OPERATING UNIT HOT W/ ENGINE COMPARTMENT TERMINAL 15 RELAY ENERGIZED INTELLIGENT SERVO MODULE FOR DIRECT SELECT LEFT TERMINAL 30 TERMINAL BLOCK (W/O BACKUP) ME-SFI (ME) CONTROL UNIT NCA WIRE ON-BOARD ELECTRICAL SYSTEM BATTERY OVERVOLTAGE PROTECTION DIODE PNK FLEX-E BM WIRE PYROTECHNICAL SEPARATOR RED WIRE RED/WHT WIRE RIGHT REAR HYDRAULIC WINDOW LIFTER FUSE BLOCK SPECIAL PROTECTION VEHICLE ADDITIONAL BATTERY SPECIAL VEHICLE MULTI-FUNCTION CONTROL UNIT (SVMCU (MSS)) STARTER STARTER CIRCUIT 50 RELAY STARTER TERMINAL 15 RELAY SUPPLEMENTAL RESTRAINT SYSTEM CONTROL UNIT VIO WIRE VIO/WHT WIRE YEL WIRE YEL/RED WIRE YEL/WHT WIRE

BLK WIRE BLK/BLU WIRE BLU WIRE BLU/WHT WIRE BRN WIRE BRN/BLK WIRE BRN/RED WIRE BRN/YEL WIRE CAN B H CAN B L CAN HMI H CAN HMI L COMBINATION SWITCH COMPUTER DATA LINES SYSTEM DRIVER-SIDE FUSE, RELAY MODULE ENGINE COMPARTMENT PREFUSE BOX ENGINE FUSE, RELAY MODULE FLEX-E BM FLEX-E BP FRONT SAM CONTROL UNIT FUSE 105 FUSE 106 FUSE 111 FUSE 12 FUSE 205 FUSE 305 GRN WIRE HOT AT ALL TIMES HOT W/ OIL PUMP RELAY ENERGIZED INSTRUMENT CLUSTER LEFT HEATED WIPER BLADE (IF EQUIPPED) LOWER SPRAY NOZZLE HOSE HEATER (IF EQUIPPED) NCA WIRE NIGHT, DAY VIEW ASSIST LONG-RANGE CAMERA WASHER FLUID PUMP PASSENGER-SIDE A-PILLAR FUSE BOX PNK WIRE RAIN/LIGHT SENSOR W/ ADDITIONAL FUNCTIONS RED WIRE RED/BLK WIRE RED/GRY WIRE RED/WHT WIRE RIGHT HEATED WIPER BLADE SIG SRA-P STEERING COLUMN MODULE CONTROL UNIT UPPER SPRAY NOZZLE HOSE HEATER (IF EQUIPPED) W/ MAGIC VISION CONTROL W/O MAGIC VISION CONTROL WASHER FLUID RESERVOIR) WB H WHT WIRE WINDSHIELD WASHER SYSTEM PUMP WINDSHIELD WASHER SYSTEM SWITCH WINDSHIELD WASHER SYSTEM WASHER FLUID LEVEL SWITCH WIPE SWITCH WIPER MOTOR WIPER PARK HEATER WIPER PARK POSITION HEATER RELAY WWSCHD H YEL WIRE YEL/RED WIRE YEL/WHT WIRE