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

ALARM SIREN ATA (EDW)/TOWING SENSOR/ INTERIOR MOTION SENSOR CONTROL UNIT BRN WIRE BRN/WHT WIRE CAN B H CAN B L COMPUTER DATA LINES SYSTEM FUSE 318 FUSE 6 HOT AT ALL TIMES LEFT FRONT DOOR INTERIOR PROTECTION SENSOR LEFT REAR INTERIOR PROTECTION SENSOR MULTIPLE FUSE 3 OVERHEAD CONTROL PANEL CONTROL UNIT PASSENGER-SIDE A-PILLAR FUSE BOX PNK/BLK WIRE PNK/BLU WIRE RED WIRE RED/BLK WIRE RED/WHT WIRE RIGHT FRONT DOOR INTERIOR PROTECTION SENSOR RIGHT REAR INTERIOR PROTECTION SENSOR

3.0L TURBO 4.0L TURBO AIR RECIRCULATION FLAP ACTUATOR MOTOR BLU/BLK WIRE BRN WIRE COOLANT THERMOSTAT HEATING ELEMENT ENGINE FUSE, RELAY MODULE FRESH AIR/RAM AIR FLAP ACTUATOR MOTOR FUSE 101 FUSE 103 GRN WIRE HOT W/ LEFT CENTER AIR OUTLET FLAP ACTUATOR MOTOR LEFT DEFROSTER VENT FLAP ACTUATOR MOTOR LEFT FOOTWELL FLAP ACTUATOR MOTOR LEFT SIDE OUTLET FLAP ACTUATOR MOTOR LOWER LEFT BLENDING AIR FLAP ACTUATOR MOTOR LOWER RIGHT BLENDING AIR FLAP ACTUATOR MOTOR NCA WIRE PTC HEATER BOOSTER (IF EQUIPPED) (FRONT OF HVAC UNIT) RED WIRE RED/BLK WIRE RED/GRN WIRE RED/GRY WIRE RELAY ENERGIZED RIGHT CENTER AIR OUTLET FLAP ACTUATOR MOTOR RIGHT DEFROSTER VENT FLAP ACTUATOR MOTOR RIGHT FOOTWELL FLAP ACTUATOR MOTOR RIGHT SIDE OUTLET FLAP ACTUATOR MOTOR UPPER LEFT BLENDING AIR FLAP ACTUATOR MOTOR UPPER RIGHT BLENDING AIR FLAP ACTUATOR MOTOR YEL WIRE

3.0L TURBO 4.0L TURBO A T KWTHS ACTUATOR MOTOR ATR BLK/RED WIRE BLK/YEL WIRE BLU/BLK WIRE BRN WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/RED WIRE CAN B H COC CAN B L CAN C H CAN C L CAN HMI H CAN HMI L CAN PER H CAN PER L COMPUTER DATA LINES SYSTEM COOLANT LEVEL SWITCH COOLANT TEMPERATURE SENSOR DRIVER-SIDE FUSE, RELAY MODULE DRIVETRAIN CONTROL UNIT E A TMOT ENGINE COMPARTMENT PREFUSE BOX ENGINE CONTROLS SYSTEM FAN MOTOR FRONT SAM CONTROL UNIT (LEFT KICK PANEL) FUSE 200 FUSE 4 FUSE 405 FUSE 458 GRN WIRE GRN/WHT WIRE HOT AT ALL TIMES INSTRUMENT CLUSTER KMSD ME-SFI (ME) CONTROL UNIT OUTSIDE TEMPERATURE SENSOR REAR BACKREST REFRIGERATOR BOX REAR CUP HOLDER (SEDAN) REAR FUSE, RELAY MODULE RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE ROW CUP HOLDER, POWER OUTLET RELAY ENERGIZED ROW/TRUNK REFRIGERATOR BOX, POWER OUTLET RELAY ENERGIZED SEDAN VIO/ORG WIRE WHT/BRN WIRE YEL WIRE YEL/WHT WIRE

AIR CONDITIONING SYSTEM BRN WIRE BRN/BLK WIRE BRN/WHT WIRE CLIMATE CONTROL OPERATING UNIT CLIMATE CONTROL UNIT (RIGHT SIDE OF DASH) COMPUTER DATA LINES SYSTEM COUPE CONVERTIBLE DEFROST/ HEATED WINDSHIELD BUTTON DRIVER-SIDE FUSE, RELAY MODULE FUSE 209 FUSE 42 GRN/VIO WIRE HEATED WINDSHIELD HOT AT ALL TIMES LEFT FRONT HEATED SIDE WINDOW NCA WIRE REAR PREFUSE BOX RED WIRE RED/BLK WIRE RED/VIO WIRE RIGHT FRONT HEATED SIDE WINDOW VIO WIRE W/ TOP PROTECTION W/O TOP PROTECTION WHT WIRE WINDSHIELD HEATER CONTROL UNIT

AIRMATIC RELAY ANALOG CLOCK AUDIO/COMAND DISPLAY, DIGITAL INSTRUMENT CLUSTER FULL DISPLAY FAN MOTOR BACKUP RELAY BLK/RED WIRE CLIMATE CONTROL UNIT ELECTRONIC STABILITY PROGRAM CONTROL UNIT ENGINE COMPARTMENT TERMINAL 15 RELAY EXTERIOR LIGHTS SWITCH FANFARE HORN RELAY FROM ENGINE COMPARTMENT PREFUSE BOX (DIAGRAM 1 OF 7) FROM VEHICLE INTERIOR PREFUSE BOX (DIAGRAM 1 OF 7) FRONT SAM CONTROL UNIT FUSE 108 FUSE 109 FUSE 110 FUSE 111 FUSE 121 FUSE 123 FUSE 125 FUSE 126 FUSE 128 FUSE 129 FUSE 133 FUSE 200 FUSE 201 FUSE 202 FUSE 203 FUSE 205 FUSE 206 FUSE 207 FUSE 208 FUSE 209 FUSE 211 FUSE 213 HERMES CONTROL UNIT LEFT FRONT DOOR CONTROL UNIT LEFT FRONT LAMP UNIT LEFT FRONT LAMP UNIT, RIGHT FRONT LAMP UNIT LEFT FRONT REVERSIBLE EMERGENCY TENSIONING RETRACTOR ME-SFI (ME) CONTROL UNIT N/A NIGHT VIEW ASSIST CONTROL UNIT OIL PUMP RELAY PNK/RED WIRE RED WIRE RED/BLK WIRE RED/VIO WIRE RED/WHT WIRE RESERVE FUSE 112 RESERVE FUSE 122 RESERVE FUSE 124 RESERVE FUSE 130 RESERVE FUSE 204 RESERVE FUSE 210 RESERVE FUSE 214 RESERVE FUSE 215 RESERVE FUSE 216 RESERVE FUSE 217 RESERVE FUSE 218 RESERVE FUSE 219 RIGHT FRONT LAMP UNIT STARTER TERMINAL 15 RELAY STEERING COLUMN MODULE CONTROL UNIT W/ DYNAMIC LED HEADLAMPS WIPER MOTOR WIPER PARK POSITION HEATER RELAY

AMBIANCE ILLUMINATION CONTROL UNIT BLK/RED WIRE BRN WIRE BRN/BLU WIRE CIGARETTE LIGHTER W/ REAR CENTER CONSOLE ILLUMINATION COUPE CONVERTIBLE COUPE CONVERTIBLE, SEDAN FROM REAR PREFUSE BOX (DIAGRAM 5 OF 7) FRONT CIGARETTE LIGHTER W/ ASHTRAY ILLUMINATION FRONT SAM CONTROL UNIT FUEL PUMP CONTROL UNIT FUSE 403 FUSE 404 FUSE 405 FUSE 406 FUSE 407 FUSE 408 FUSE 411 FUSE 417 FUSE 455 FUSE 456 FUSE 457 FUSE 458 FUSE 459 FUSE 466 GRY/BLU WIRE HEATED REAR WINDOW RELAY HEATING ELEMENT ILLUMINATION LUGGAGE COMPARTMENT SOCKET MULTICONTOUR SEAT PNEUMATIC PUMP N/A NCA WIRE PNK/RED WIRE REAR BACKREST REFRIGERATOR BOX REAR CIGARETTE LIGHTER W/ ASHTRAY ILLUMINATION REAR CONTROL UNIT REAR CUP HOLDER REAR SAM CONTROL UNIT RED WIRE RED/BLK WIRE RED/WHT WIRE RESERVE FUSE 410 RESERVE FUSE 460 RESERVE FUSE 465 RIGHT REAR DOOR CONTROL UNIT SEDAN SUBWOOFER AMPLIFIER TO DC/AC CONVERTER CONTROL UNIT (DIAGRAM 1 OF 7) TO FUSE 477 (DIAGRAM 4 OF 7) VEHICLE INTERIOR TERMINAL 15 RELAY YEL WIRE

ACTIVE BELT BUCKLE CONTROL UNIT ACTIVE BODY CONTROL UNIT ADVANCED SOUND SYSTEM AIRMATIC CONTROL UNIT AIRSCARF CONTROL UNIT AMPLIFIER CONTROL UNIT ARMREST HEATER CONTROL UNIT BACKUP CAMERA CONTROL UNIT BACKUP RELAY CONTROL UNIT, FRONT CAMERA COVER MOTOR COUPE CONVERTIBLE DRIVER SEAT HEATER CONTROL UNIT FROM VEHICLE INTERIOR TERMINAL 15 RELAY (DIAGRAM 3 OF 7) FUSE 414 FUSE 415 FUSE 416 FUSE 424 FUSE 425 FUSE 427 FUSE 428 FUSE 429 FUSE 435 FUSE 436 FUSE 443 FUSE 444 FUSE 445 FUSE 446 FUSE 447 FUSE 448 FUSE 449 FUSE 450 FUSE 451 FUSE 452 FUSE 453 FUSE 454 FUSE 462 FUSE 467 FUSE 468 FUSE 469 FUSE 471 FUSE 472 FUSE 475 FUSE 476 FUSE 477 FUSE 478 FUSE 483 LEFT FRONT POWER WINDOW HYDRAULIC PUMP RELAY LEFT REAR DISPLAY, RIGHT REAR DISPLAY LEFT REAR MULTICONTOUR SEAT CONTROL UNIT LEFT REAR POWER WINDOW HYDRAULIC PUMP RELAY LEFT REAR SEAT CONTROL UNIT LEFT REAR SEAT HEATER CONTROL UNIT MAGIC SKY CONTROL UNIT MERCEDES-BENZ INTELLIGENT DRIVE CONTROL UNIT N/A OF 7) REAR ENTERTAINMENT CONTROLLER UNIT REAR SAM CONTROL UNIT REAR SEAT HEATERS CONTROL UNIT REAR SWITCHING MODULE RED WIRE RED/BLK WIRE RED/WHT WIRE RESERVE FUSE 412 RESERVE FUSE 461 RESERVE FUSE 470 RESERVE FUSE 479 RESERVE FUSE 480 RIGHT FRONT POWER WINDOW HYDRAULIC PUMP RELAY RIGHT REAR MULTICONTOUR SEAT CONTROL UNIT RIGHT REAR SEAT CONTROL UNIT RIGHT REAR SEAT HEATER CONTROL UNIT SEDAN SOUND SYSTEM AMPLIFIER CONTROL UNIT (W/ SOUND SYSTEM) SPECIAL VEHICLE MULTI-FUNCTION CONTROL UNIT (SVMCU (MSS)) SPECIAL-PURPOSE VEHICLE MULTI-FUNCTION CONTROL UNIT TIRE PRESSURE MONITOR CONTROL UNIT TO BATTERY DISCONNECT SWITCH RELAY (DIAGRAM 7 OF 7) TO DC/AC CONVERTER CONTROL UNIT (DIAGRAM 1 TO DC/AC CONVERTER CONTROL UNIT (DIAGRAM 1 OF 7) TO RESERVE FUSE 423 (DIAGRAM 7 OF 7) TO SPECIAL PURPOSE VEHICLE FUSE BLOCK 1 (DIAGRAM 5 OF 7) TRAILER RECOGNITION CONTROL UNIT TRUNK LID CONTROL UNIT TV TUNER CONTROL UNIT W/ ADVANCED SOUND SYSTEM W/ TOP PROTECTION W/O TOP PROTECTION WHT WIRE

1 OF 7) AUX BATTERY DISCONNECT SWITCH RELAY BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BRN WIRE BRN/RED WIRE CAN B H CAN B L CAN HMI H CAN HMI L CAN PER H CAN PER L CAN-D H CAN-D L COMPUTER DATA LINES SYSTEM CONTROL UNIT) COUPE, CONVERTIBLE SEDAN W/O ECO START/STOP W/ ECO START/STOP DECOUPLING RELAY ECO START/STOP FUNCTION ADDITIONAL BATTERY ECO START/STOP FUNCTION ADDITIONAL BATTERY RELAY ELECTRONIC IGNITION SWITCH CONTROL UNIT FIRE EXTINGUISHING SYSTEM, EMERGENCY FRESH AIR SYSTEM FLEX-E BM FLEX-E BP FROM PASSENGER- FROM PYROTECHNICAL SEPARATOR (DIAGRAM FROM REAR FUSE, RELAY MODULE (DIAGRAM 4 OF 7) FRONT SAM CONTROL UNIT FULLY INTEGRATED TRANSMISSION CONTROL UNIT FUSE FUSE 1 FUSE 2 FUSE 3 FUSE 4 FUSE 41 FUSE 42 FUSE 45 FUSE 46 FUSE 47 FUSE 48 FUSE 49 FUSE 5 FUSE 54 GRN WIRE GRN/BLU WIRE GRN/WHT WIRE GRY WIRE GRY/BLU WIRE GRY/WHT WIRE KEYLESS GO START/STOP BUTTON KEYLESS-GO CONTROL UNIT LEFT FRONT DOOR CONTROL UNIT N/A OPERATING UNIT PAS (GAS), SPECIAL SIGNAL SYSTEM PNK WIRE PNK/BLK WIRE RED WIRE RED/BLK WIRE RED/GRN WIRE RED/WHT WIRE RESERVE FUSE 10 RESERVE FUSE 44 RESERVE FUSE 53 RESERVE FUSE 6 RESERVE FUSE 7 RESERVE FUSE 8 RESERVE FUSE 9 RIGHT FRONT POWER WINDOW HYDRAULIC PUMP RELAY SEDAN SIDE A-PILLAR FUSE BOX SIG SIG DF SPECIAL PROTECTION VEHICLES FUSE BOX SPECIAL SIGNAL SYSTEM SUPPLY TEMPERATURE SENSOR TO PASSENGER-SIDE A-PILLAR FUSE BOX (DIAGRAM 6 OF 7) TO REAR FUSE, RELAY MODULE (DIAGRAM 3 OF 7) TO VEHICLE INTERIOR PREFUSE BOX (DIAGRAM 1 OF 7) UPPER RIGHT ENGINE COMPARTMENT FIRE EXTINGUISHING SYSTEM VIO/YEL WIRE W/ TOP PROTECTION WAKEUP WINDSHIELD HEATER CONTROL UNIT YEL WIRE YEL/WHT WIRE

ACTIVE BELT BUCKLE CONTROL UNIT BATTERY DISCONNECT SWITCH RELAY BRN WIRE CONTROL UNIT) EMERGENCY START SYSTEM EMERGENCY START SYSTEM RELAY FROM FUSE 447 (DIAGRAM 4 OF 7) FROM REAR FUSE, RELAY MODULE (DIAGRAM 4 OF 7) FUSE FUSE 4 FUSE 432 FUSE 433 FUSE 6 FUSE 8 FUSE 9 GOVERNMENT VEHICLE PERIPHERAL DEVICES ELECTRICAL CONNECTOR N/A OPERATING UNIT PAS (GAS), SPECIAL SIGNAL SYSTEM PNK/RED WIRE RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE RELAY (HIGH CURRENT) RESERVE FUSE RESERVE FUSE 418 RESERVE FUSE 419 RESERVE FUSE 420 RESERVE FUSE 421 RESERVE FUSE 422 RESERVE FUSE 423 RESERVE FUSE 430 RESERVE FUSE 434 RESERVE FUSE 437 RESERVE FUSE 438 RESERVE FUSE 439 RESERVE FUSE 440 RESERVE FUSE 441 RESERVE FUSE 442 RIGHT REAR HYDRAULIC WINDOW LIFTER FUSE BLOCK SPECIAL PROTECTION VEHICLE ADDITIONAL BATTERY SPECIAL SIGNAL SYSTEM SPECIAL VEHICLE MULTI-FUNCTION CONTROL UNIT (SVMCU (MSS)) VENT FLAPS CLOSE RELAY, VENT FLAPS OPEN RELAY, IRRITANT GAS SENSOR WILDCARD (CUSTOMER OPTION) ELECTRICAL CONNECTOR

BRN WIRE BRN/RED WIRE CAN B H CAN B L COMPUTER DATA LINES SYSTEM FUSE 407 FUSE 471 FUSE 472 GRY WIRE HOT AT ALL TIMES LEFT REAR MULTICONTOUR SEAT CONTROL UNIT LEFT REAR SEAT MASSAGE FUNCTION CONTROL UNIT MULTICONTOUR SEAT PNEUMATIC PUMP REAR FUSE, RELAY MODULE RED/BLK WIRE RED/GRY WIRE RED/WHT WIRE RIGHT REAR MULTICONTOUR SEAT CONTROL UNIT RIGHT REAR SEAT MASSAGE FUNCTION CONTROL UNIT YEL WIRE