Mercedes-Benz C-class W205/S205/C205/A205 facelift (2018-2021) front sam control unit Wiring diagrams

ALTERNATOR BATTERY DISCONNECT SWITCH RELAY BATTERY SENSOR BLK WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/RED WIRE CAN B H CAN B L CAN C H CAN C L CAN HMI H CAN HMI L COMPUTER DATA LINES SYSTEM FRONT SAM CONTROL UNIT FUSE 13 INSTRUMENT CLUSTER ME-SFI (ME) CONTROL UNIT NCA WIRE ON-BOARD ELECTRICAL SYSTEM BATTERY RED WIRE RIGHT VEHICLE-END, ENGINE-END BUSBAR STUD 2 STARTING CIRCUIT UPPER CONTROL PANEL CONTROL UNIT VIO WIRE VIO/WHT WIRE YEL WIRE YEL/WHT WIRE

BLK WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BLUETOOTH ANTENNA BRN WIRE BRN/RED WIRE CAN B H CAN B L COMPUTER DATA LINES SYSTEM COUPE, SEDAN FRONT CENTER CONSOLE USB CONNECTOR FRONT SAM CONTROL UNIT GRN WIRE GRY/YEL WIRE LEFT FRONT DOOR MIDRANGE SPEAKER MULTI-MEDIA CONNECTION UNIT NCA WIRE ORG/ WIRE OVERHEAD CONTROL PANEL CONTROL UNIT RED WIRE RED/YEL WIRE RIGHT LOWER CONTROL PANEL (W/ TOUCHPAD ONLY) SHIELD USB USB GND USB H USB L VIO WIRE W/ WIRELESS MOBILE PHONE CHARGING, MULTI-FUNCTION TELEPHONY W/O WIRELESS MOBILE PHONE CHARGING, MULTI-FUNCTION TELEPHONY WHT WIRE YEL WIRE

BLK WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BLUETOOTH ANTENNA BRN WIRE BRN/RED WIRE CAN B H CAN B L COMPUTER DATA LINES SYSTEM COUPE, SEDAN FRONT CENTER CONSOLE USB CONNECTOR FRONT SAM CONTROL UNIT GRN WIRE GRY/YEL WIRE LEFT FRONT DOOR MIDRANGE SPEAKER MULTI-MEDIA CONNECTION UNIT NCA WIRE ORG/ WIRE OVERHEAD CONTROL PANEL CONTROL UNIT RED WIRE RED/YEL WIRE RIGHT LOWER CONTROL PANEL (W/ TOUCHPAD ONLY) SHIELD USB USB GND USB H USB L VIO WIRE W/ WIRELESS MOBILE PHONE CHARGING, MULTI-FUNCTION TELEPHONY W/O WIRELESS MOBILE PHONE CHARGING, MULTI-FUNCTION TELEPHONY WHT WIRE YEL WIRE

ALARM SIREN AMBIANCE ILLUMINATION CONTROL UNIT BLUE LIGHT SEPARATION POINT BRN WIRE CENTER CONSOLE ANTI-THEFT ALARM SYSTEM SWITCH GROUP COOLANT CIRCULATION PUMP COUPE COUPE CONVERTIBLE COUPE, SEDAN DC-DC CONVERTER CONTROL UNIT DIAGNOSTIC CONNECTOR DRIVER SIDE ENGINE HOOD CONTACT SWITCH DRIVETRAIN CONTROL UNIT DRIVETRAIN SENSOR CAN (CAN I) POTENTIAL DISTRIBUTOR ELECTRICAL CONNECTOR ELECTRIC POWER STEERING CONTROL UNIT FOOTWELL ILLUMINATION SWITCH FRONT FLASHING LIGHT POINT FRONT SAM CONTROL UNIT HERMES CONTROL UNIT LEFT FRONT DOOR CONTROL UNIT LEFT FRONT DOOR INTERIOR PROTECTION SENSOR LEFT INTERIOR CAN (CAN B) POTENTIAL DISTRIBUTOR ELECTRICAL CONNECTOR LEFT SOFT TOP LOCKED SWITCH LOW TEMPERATURE CIRCUIT CIRCULATION PUMP 1 LOWER LEFT CENTER CONSOLE AMBIENT LIGHTING LOWER RIGHT CENTER CONSOLE AMBIENT LIGHTING MOBILE PHONE CRADLE CONTROL UNIT MONO MULTI-FUNCTION CAMERA OVERHEAD CONTROL PANEL CONTROL UNIT PANORAMIC SLIDING SUNROOF CONTROL MODULE PARK PAWL CAPACITOR PEDAL OPERATION MONITOR BUZZER PEDAL OPERATION MONITOR SWITCH PERIPHERALS CAN (CAN PER) POTENTIAL DISTRIBUTOR ELECTRICAL CONNECTOR POLICE BEACON SEPARATION POINT PWR-1 RADIATOR SHUTTERS ACTUATOR MOTOR RAIN/LIGHT SENSOR W/ ADDITIONAL FUNCTIONS REAR CONTROL UNIT RIGHT FRONT DOOR CONTROL UNIT RIGHT FRONT DOOR INTERIOR PROTECTION SENSOR RIGHT FRONT LAMP UNIT RIGHT SOFT TOP LOCKED SWITCH ROOF LIGHT BAR SEPARATION POINT SLIDING ROOF CONTROL MODULE SOUND GENERATOR SPECIAL SIGNAL SYSTEM OPERATING UNIT STATIONARY HEATER RADIO REMOTE CONTROL RECEIVER STEREO MULTI-FUNCTION CAMERA TELEPHONE, STATIONARY HEATER ANTENNA CHANGEOVER SWITCH UPPER LEFT CENTER CONSOLE AMBIENT LIGHTING UPPER RIGHT CENTER CONSOLE AMBIENT LIGHTING USER INTERFACE CAN (CAN HMI) POTENTIAL DISTRIBUTOR ELECTRICAL CONNECTOR W/ HERMES LTE W/ PANORAMA W/O LED WIND DEFLECTOR ACTUATOR MOTOR

ADAPTIVE DAMPING SYSTEM CONTROL UNIT AIRMATIC CONTROL UNIT AIRSCARF CONTROL UNIT AUDIO/COMAND CONTROL PANEL BLK WIRE BRN WIRE BRN/WHT WIRE CELLULAR TELEPHONE SYSTEM ANTENNA AMPLIFIER/ COMPENSATOR COUPE COUPE CONVERTIBLE DRIVER FOOTWELL LAMP ELECTRICAL CONNECTOR DRIVER SEAT CONTROL UNIT DRIVER SEAT LUMBAR SUPPORT ADJUSTMENT CONTROL UNIT DRIVER SEAT LUMBAR SUPPORT PNEUMATIC PUMP DRIVER SEAT PARTIALLY ELECTRIC SEAT ADJUSTMENT SWITCH DRIVER SIDE BAG SQUIB ELECTRONIC IGNITION SWITCH CONTROL UNIT FRONT CIGARETTE LIGHTER W/ ASHTRAY ILLUMINATION FRONT PASSENGER FOOTWELL LAMP ELECTRICAL CONNECTOR FRONT PASSENGER SEAT CONTROL UNIT FRONT PASSENGER SEAT LUMBAR SUPPORT PNEUMATIC PUMP FRONT PASSENGER SEAT PARTIALLY ELECTRIC SEAT ADJUSTMENT SWITCH FRONT SAM CONTROL UNIT FRONT SEAT HEATER CONTROL UNIT FUEL PUMP CONTROL UNIT FUEL QUALITY SENSOR GRN/PNK WIRE LEFT AIRSCARF FAN MOTOR LEFT BACKREST RELEASE/ INCLINATION MICROSWITCH LEFT FRONT MULTI-CONTOUR SEAT CONTROL UNIT LEFT FRONT REVERSIBLE EMERGENCY TENSIONING RETRACTOR LEFT REAR DOOR CONTROL UNIT LEFT REAR FOOTWELL ILLUMINATION AMBIANCE ILLUMINATION (LED) LEFT REAR INTERIOR PROTECTION SENSOR PWER-2 REAR CONTROL UNIT REAR WINDOW HEATER RIGHT AIRSCARF FAN MOTOR RIGHT BACKREST RELEASE/INCLINATION MICROSWITCH RIGHT FRONT ILLUMINATED DOOR SILL MOLDING RIGHT FRONT MULTICONTOUR SEAT CONTROL UNIT RIGHT FRONT REVERSIBLE EMERGENCY TENSIONING RETRACTOR RIGHT REAR BRAKE WEAR SENSOR RIGHT REAR DOOR CONTROL UNIT RIGHT REAR FOOTWELL ILLUMINATION AMBIANCE ILLUMINATION (LED) RIGHT REAR ILLUMINATED DOOR SILL MOLDING RIGHT REAR INTERIOR PROTECTION SENSOR SEDAN STATIONARY HEATER FUEL PUMP TOUCHPAD TRAILER RECOGNITION CONTROL UNIT TRAILER SOCKET W/ SMOKER'S PACKAGE YEL WIRE

AIRSCARF CONTROL UNIT AMBIANCE ILLUMINATION CONTROL UNIT BLU WIRE BLU/WHT WIRE BRN WIRE BRN/RED WIRE CAN B H CAN B L CAN B L RBA-1 CLIMATE CONTROL OPERATING UNIT CLIMATE CONTROL UNIT COUPE FRONT SAM CONTROL UNIT FRONT SEAT HEATER CONTROL UNIT GRY/BLK WIRE GRY/RED WIRE LEFT FRONT DOOR CONTROL UNIT LEFT FRONT MULTICONTOUR SEAT CONTROL UNIT LEFT INTERIOR CAN (CAN B) POTENTIAL DISTRIBUTOR ELECTRICAL CONNECTOR LEFT REAR DOOR CONTROL UNIT OVERHEAD CONTROL PANEL CONTROL UNIT PANORAMIC SLIDING ROOF CONTROL MODULE PNK WIRE PNK/WHT WIRE REAR AIR CONDITIONING OPERATING UNIT REAR CONTROL UNIT REAR SAM CONTROL UNIT REAR SEAT HEATERS CONTROL UNIT RIGHT REAR DOOR CONTROL UNIT SEDAN, COUPE SLIDING ROOF CONTROL MODULE STATIONARY HEATER RADIO REMOTE CONTROL RECEIVER TRUNK LID CONTROL UNIT VIO WIRE VIO/WHT WIRE W/ PANORAMIC SLIDING SUNROOF W/O PANORAMIC SLIDING SUNROOF

BRN WIRE BRN/RED WIRE CAN B H CAN B L CAN LR H CAN LR L COMPUTER DATA LINES SYSTEM DRIVER-SIDE FUSE, RELAY MODULE ELECTRONIC IGNITION SWITCH CONTROL UNIT FLEX-E BP PNK FLEX-E BM WIRE FRONT SAM CONTROL UNIT FUSE 200 FUSE 210 GRN WIRE HORNS CONTACT PLATE HOT W/ BATTERY DISCONNECT SWITCH RELAY ENERGIZED LEFT FANFARE HORN NCA WIRE RED WIRE RED/BLK WIRE RIGHT FANFARE HORN SIG STEERING COLUMN MODULE CONTROL UNIT STEERING WHEEL ELECTRONICS YEL WIRE

13 19 SIG BATTERY SENSOR BLK WIRE BLK/WHT WIRE BLU WIRE BLU/WHT WIRE BRN WIRE BRN/RED WIRE CAN B H CAN B L CAN C H CAN C L CHARGING CIRCUIT COMPUTER DATA LINES SYSTEM ELECTRONIC IGNITION SWITCH CONTROL UNIT ENGINE FUSE, RELAY MODULE FLEX-E BM FLEX-E BP FRONT SAM CONTROL UNIT FULLY INTEGRATED TRANSMISSION CONTROL UNIT FUSE 113 FUSE 127 GRN WIRE HOT W/ ENGINE COMPARTMENT TERMINAL 15 RELAY ENERGIZED KEYLESS GO START/STOP BUTTON LEFT LOWER CONTROL PANEL LIN ME-SFI (ME) CONTROL UNIT NCA WIRE ON-BOARD ELECTRICAL SYSTEM BATTERY ORG/ WIRE PNK WIRE RED WIRE RIGHT LOWER CONTROL PANEL RIGHT VEHICLE-END, ENGINE END BUSBAR STUD 1, 4 SIG (+) SIG GND SIG (2) SIG 3 STARTER STARTER CIRCUIT 50 RELAY STEERING COLUMN MODULE CONTROL UNIT VIO WIRE VIO/WHT WIRE VOLTAGE DIP LIMITER WHT WIRE YEL WIRE YEL/RED WIRE YEL/WHT WIRE

BLK WIRE BLK/YEL WIRE BLU WIRE BLU/YEL WIRE BRN WIRE BRN/YEL WIRE DRIVER KNEEBAG SQUIB DRIVER SEAT BELT BUCKLE SWITCH FRONT PASSENGER AIR BAG SQUIB 1 FRONT PASSENGER AIR BAG SQUIB 2 FRONT PASSENGER KNEEBAG SQUIB FRONT SAM CONTROL UNIT GRN WIRE GRN/BLU WIRE GRN/YEL WIRE GRY WIRE GRY/GRN WIRE GRY/YEL WIRE PNK WIRE PNK/GRN WIRE PNK/RED WIRE PNK/YEL WIRE RBA-1 REFRIGERANT INERTING SQUIB SEDAN, COUPE SIG VIO WIRE VIO/YEL WIRE WHT/GRY WIRE YEL WIRE

AUDIO H AUDIO L+ BLU WIRE BLU/BLK WIRE BLU/BRN WIRE BLU/ORG WIRE BLU/RED WIRE BRN WIRE BRN/ORG WIRE BRN/RED WIRE CAN B H CAN B L COMPUTER DATA LINES SYSTEM EXCEPT CONVERTIBLE FRONT SAM CONTROL UNIT GRN WIRE GRN/YEL WIRE GRY/BLU WIRE MOT GND/(+) NCA WIRE ORG/BLU WIRE PNK WIRE RED WIRE SENS SENS (+) SENS GND SEPARATE TRUNK LID LOCK SWITCH SIG (+) COC TAILGATE CONTROL UNIT (W/O REMOTE BOOT LID CLOSING) TRUNK LID CONTROL UNIT TRUNK LID EMERGENCY OPENING SWITCH TRUNK LID/ LIFTGATE CONTROL WARNING BUZZER TRUNK LID/ LIFTGATE LOCK MAIN CATCH SWITCH TRUNK LID/ LIFTGATE LOCK MOTOR TRUNK LID/LIFTGATE CONTROL DRIVE UNIT TRUNK LID/LIFTGATE LOCK TRUNK LID/LIFTGATE LOCK (EXCEPT CONVERTIBLE) WHT WIRE