Mercedes-Benz S-class W221 facelift (2009-2013) computer data lines system Wiring diagrams

1 2 3 4 CAN-B L CAN-B H 31 30 1 2 ROTARY TUMBLER SWITCH 1 2 SIG (-) 2 1 FLAT WIRE FLAT WIRE 3 4 2 1 FLAT WIRE FLAT WIRE FLAT WIRE FLAT WIRE 31 58 58 31 3 4 FLAT WIRE FLAT WIRE 31 15 4 5 MOTOR MOTOR 4 5 SVS-MOT SVS-MOT 7 8 FLAT WIRE FLAT WIRE 9 10 1 2 4 8 3 TZS-MOT TZS-MOT ZV-MOT ZV-MOT 31 31 DFK BLK WIRE BLU WIRE BRN WIRE BRN/RED WIRE CL (ZV) MOTOR COMPUTER DATA LINES SYSTEM DATA 31 15 FLAT WIRE FLAT WIRE DOOR ADDITIONAL LOCK MOTOR DRIVE LOCK PAWL SWITCH DRIVER DOOR INFRARED SENSOR FLAT WIRE FUSE 80 FUSE 82 FUSE 70 FUSE 81 GRN WIRE GRN/BRN WIRE GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES KEYLESS GO SYSTEM CIRCUIT LEFT FRONT DOOR CONTROL MODULE (IN LEFT FRONT DOOR) LEFT FRONT DOOR ENTRANCE, EXIT LAMP LEFT FRONT DOOR INSIDE HANDLE ILLUMINATION LEFT FRONT DOOR LOCK UNIT LEFT FRONT DOOR TRIM STRIP ILLUMINATION LAMP 1 LEFT FRONT DOOR WARNING LAMP LEFT REAR DOOR CONTROL MODULE LEFT REAR DOOR ENTRANCE, EXIT LAMP LEFT REAR DOOR LOCK UNIT LEFT REAR DOOR TRIM STRIP ILLUMINATION LEFT REAR DOOR WARNING LAMP LEFT REAR INSIDE DOOR HANDLE ILLUMINATION NCA WIRE OPENING ASSIST MOTOR ORG/ WIRE PNK/BLU WIRE PNK/VIO WIRE POWER CLOSING MOTOR RED WIRE RED/GRN WIRE RED/GRY WIRE RIGHT INSTRUMENT PANEL FUSE BOX (UNDER RIGHT SIDE DASH COVER) ROTARY TUMBLER SWITCH SAFETY LIMIT SWITCH W/ POWER CLOSING WHT WIRE WHT/VIO WIRE YEL WIRE ZV-MOT ZV-MOT 31 DFK

1 2 3 4 5 6 7 8 9 10 11 AUDIO LEFT AUDIO RIGHT 1 2 3 4 5 6 7 8 9 10 11 CAN F H 1 2 3 4 LVDS RX- GROUND LVDS RX+ GROUND 1 2 MOST IN MOST OUT 5 3 (NOT USED) 6 4 2 PNK WIRE ANTENNA SPLITTER AUDIO IN R AUDIO OUT L AUDIO OUT L AUDIO OUT L AUDIO OUT R AUDIO-IN L BACKUP CAMERA VOLTAGE SUPPLY MODULE (IF EQUIPPED) (LEFT SIDE OF TRUNK) BLK WIRE BLK/WHT WIRE BLU WIRE BLUETOOTH ANTENNA BRN WIRE CAN A H CAN A L COMAND CONTROL UNIT COMPUTER DATA LINES SYSTEM FUSE 122, RELAY MODULE (CENTER TRUNK) FUSE 99 GRN WIRE GROUND GROUND SHIELD 12 13 14 HANDS-FREE SYSTEM MICROPHONE GROUP (PART OF INTERIOR REARVIEW MIRROR) HEADPHONES CONNECTING POINT HOT AT ALL TIMES HOT W/ QUIESCENT CURRENT CUTOUT RELAY ENERGIZED LEFT INSTRUMENT PANEL FUSE BOX (UNDER LEFT SIDE DASH COVER) MC 1 MC 2 PNK WIRE MC GND MC SHIELD MEDIA INTERFACE CONNECTOR MOST DATA BUS CIRCUIT NCA WIRE ORG/ WIRE PNK WIRE REAR SAM CONTROL MODULE W/ FUSE/ RED/BLU WIRE SHIELD SHIELD BLUETOOTH SHIELD GPS USB (UNIVERSAL SERIAL BUS) CONNECTOR W/O MEDIA INTERFACE WAKE UP 30 CAN F L WALKMAN SEPARATION POINT WHT WIRE WHT/YEL WIRE YEL WIRE YEL/WHT WIRE

ANT ANTENNA SPLITTER BLK WIRE BRN WIRE BRN/BLK WIRE BRN/GRY WIRE COMAND CONTROL UNIT COMPUTER DATA LINES SYSTEM EC LED TDC LED IC LED ECS ICS ICS CRASH EMERGENCY CALL SYSTEM ANTENNA SPLITTER (LEFT SIDE OF TRUNK) EMERGENCY CALL SYSTEM CONTROL UNIT (LEFT FRONT OF TRUNK) EMERGENCY CALL SYSTEM LEFT BACKUP ANTENNA (LEFT OF TRUNK) EMERGENCY CALL SYSTEM RIGHT BACKUP ANTENNA (RIGHT OF TRUNK) FUSE 138 W/ FUSE, RELAY MODULE (CENTER TRUNK) GPS ROOF ANTENNA TELEPHONE, GPS ROOF ANTENNA (GPS ROOF ANTENNA: REAR GRN WIRE GRN/RED WIRE GRY WIRE GRY/RED WIRE GRY/WHT WIRE HOT W/ CIRCUIT LSP + CAN-D H CAN-D L MIC SHIELD MIC MUTE NCA WIRE ORG/ WIRE REAR SAM CONTROL MODULE RED WIRE SOUND SYSTEMS TELEPHONE ANTENNA VIO WIRE WHT WIRE WHT/YEL WIRE YEL/BLU WIRE YEL/GRN WIRE YEL/PNK WIRE YEL/RED WIRE

BLK WIRE BLU WIRE BRN WIRE CENTER COCKPIT SPEAKER COMPUTER DATA LINES SYSTEM CRASH OUT CAN E-L CAN E-H GRN WIRE GRN/WHT WIRE GRY WIRE GRY/BLU WIRE GRY/GRN WIRE GRY/RED WIRE GRY/WHT WIRE INSTRUMENT CLUSTER SYSTEM MB-INFO, TELEDIAGNOSIS BUTTON GROUP NCA WIRE ORG/ WIRE RED WIRE RESTRAINT SYSTEMS CONTROL MODULE (FRONT OF CENTER CONSOLE) SOS PUSHBUTTON SWITCH SOUND SYSTEMS WHT WIRE YEL WIRE YEL/GRN WIRE YEL/PNK WIRE

1 2 3 4 5 6 7 8 31 CAN E L CAN E H 1 2 3 4 VIDEO N GND VIDEO N VIDEO P GND VIDEO P BLU WIRE BRN WIRE COMPUTER DATA LINES SYSTEM FUSE 94 GRN WIRE GRN/WHT WIRE HOT AT ALL TIMES LEFT INSTRUMENT PANEL FUSE BOX (UNDER LEFT SIDE DASH COVER) MULTIFUNCTION CAMERA (FRONT CENTER OF ROOF) ORG/ WIRE RADAR SENSORS CONTROL UNIT (SGR) (W/ SPEED LIMIT ASSIST) (RIGHT TRUNK) RED/WHT WIRE VIDEO N VIDEO N GND VIDEO P VIDEO P GND

BLK/GRN WIRE BLK/WHT WIRE BLK/YEL WIRE BLU/BRN WIRE BLU/YEL WIRE BRN WIRE BRN/BLU WIRE BRN/GRY WIRE BRN/RED WIRE CAN B H CAN B L CAN-E L CAN-E H (-) SH 31 31 CENTER LEFT FRONT PTS ULTRASONIC SENSOR CENTER RIGHT FRONT PTS ULTRASONIC SENSOR (REAR BUMPER) COCKPIT SWITCH GROUP COMPUTER DATA LINES SYSTEM DATA FUSE 142 MODULE W/ FUSE, RELAY MODULE (CENTER TRUNK) GRN WIRE GRN/WHT WIRE GRY/RED WIRE GRY/YEL WIRE HOT AT ALL TIMES INNER LEFT FRONT PTS ULTRASONIC SENSOR (REAR BUMPER) INNER LEFT OUTER RIGHT REAR PTS REAR PTS ULTRASONIC ULTRASONIC SENSOR SENSOR INNER RIGHT FRONT PTS ULTRASONIC SENSOR INNER RIGHT REAR PTS ULTRASONIC SENSOR LEFT REAR FOOTWELL OUTER LEFT FRONT PTS ULTRASONIC SENSOR OUTER LEFT REAR PTS ULTRASONIC SENSOR OUTER RIGHT FRONT PTS ULTRASONIC SENSOR PTS CONTROL MODULE (RIGHT SIDE TRUNK) PTS OFF SWITCH REAR PTS WARNING INDICATOR REAR SAM CONTROL RED/WHT WIRE UPPER CONTROL PANEL MODULE WHT/RED WIRE WHT/YEL WIRE YEL/RED WIRE YEL/VIO WIRE YEL/WHT WIRE

BRN WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/RED WIRE BRN/YEL WIRE CAN B L CAN B H COMPUTER DATA LINES SYSTEM COMPUTER DATA LINES SYSTEM CAN-B L CAN-B H DASH COVER) FUSE 102 FUSE 92 GK R GK L HOT AT ALL TIMES LEFT FRONT SEAT BELT COMFORT FEATURE SOLENOID (BASE OF LEFT "B" PILLAR) LEFT FRONT SEAT CONTROL MODULE LEFT INSTRUMENT PANEL FUSE BOX (UNDER LEFT SIDE LEFT REAR SEAT BELT COMFORT FEATURE SOLENOID NCA WIRE ORG/ WIRE REAR SAM CONTROL MODULE W/ FUSE, RELAY MODULE (CENTER TRUNK) REAR SEATS CONTROL MODULE (RIGHT SIDE OF TRUNK) RED WIRE RED/WHT WIRE RIGHT FRONT SEAT BELT COMFORT SOLENOID RIGHT FRONT SEAT CONTROL MODULE RIGHT REAR FOOTWELL RIGHT REAR SEAT BELT BUCKLE/BELT COMFORT FEATURE RIGHT REAR SEAT BELT COMFORT FEATURE SOLENOID SWITCH (IN RIGHT REAR SEAT BELT BUCKLE) WHT WIRE

A/C AIR RECIRCULATION UNIT BATTERY MANAGEMENT SYSTEM CONTROL UNIT BATTERY SENSOR BLK RED/ WIRE BLK WIRE BLU WIRE BLU/YEL WIRE BRN WIRE CAN I H CAN I L COMPUTER DATA LINES SYSTEM COMPUTER DATA LINES SYSTEM PYROTECHNICAL SEPARATOR DATA LINK CONNECTOR ELECTRIC REFRIGERANT COMPRESSOR ELECTRIC SUCTION FAN ENGINE, A/C W/ INTEGRATED CONTROL FROM ENGINE COMPARTMENT PREFUSE BOX (DIAGRAM 1 OF 4) FROM FRONT SAM CONTROL MODULE W/ FUSE, RELAY MODULE (DIAGRAM 3 OF 4) FROM LEFT INSTRUMENT PANEL FUSE BOX (DIAGRAM 3 OF 4) FUSE 10 FUSE 3 FUSE 10 FUSE 9 FUSE 36 FUSE 38 FUSE 37 FUSE 29 FUSE 39 FUSE 4 FUSE 3 FUSE 5 FUSE 54 FUSE 6 FUSE 6 FUSE 2 FUSE 7 FUSE 8 FUSE 9 GENERATOR GRN WIRE HEATED WINDSHIELD CONTROL MODULE (W/ SPECIAL PROTECTION) HV- INSTRUMENT CLUSTER NCA WIRE PNK WIRE PNK/GRN WIRE PNK/RED WIRE POWER ELECTRONICS CONTROL UNIT QUIESCENT CURRENT CUTOUT RELAY RED WIRE RED/BLK WIRE RED/BRN WIRE RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE STARTER CIRCUIT 15 RELAY TO CHASSIS CIRCUIT 87 RELAY (DIAGRAM 3 OF 4) TO CIRCUIT TO EIS (EZS) CONTROL UNIT (DIAGRAM 4 OF 4) TO FRONT SAM CONTROL MODULE STARTER W/ FUSE, RELAY MODULE (DIAGRAM 1 OF 4) TO FRONT SAM CONTROL MODULE W/ FUSE, RELAY MODULE (DIAGRAM 3 OF 4) TO LEFT INSTRUMENT PANEL FUSE BOX (DIAGRAM 3 OF 4) TO REAR SAM CONTROL MODULE W/ FUSE, RELAY MODULE (DIAGRAM 2 OF 4) TO REAR SAM CONTROL MODULE W/ FUSE, RELAY MODULE (DIAGRAM 3 OF 4) TO RIGHT INSTRUMENT PANEL FUSE BOX (DIAGRAM 2 OF 4) TO SPECIAL PROTECTION VEHICLE ADDITIONAL FUSE HOLDER (DIAGRAM 2 OF 4) UPPER CONTROL PANEL CONTROL UNIT VACUUM PUMP ON-BOARD ELECTRICAL SYSTEM BATTERY RELAY (+) (W/ MILD HYBRID DRIVE) YEL WIRE

1 OF 4) 12 VOLT CONNECTOR GLOVE COMPARTMENT (IF EQUIPPED) BLK/WHT WIRE BLU WIRE BRN WIRE BRN/RED WIRE CAN BH CAN BL CAN-EH CAN-EL CIRCUIT COMPUTER DATA LINES SYSTEM DRIVER NECK-PRO HEAD RESTRAINT SOLENOID EMERGENCY CALL SYSTEM CONTROL UNIT FANFARE HORN RELAY FROM BACKUP BATTERY FUSE (DIAGRAM 3 OF 4) FROM FRONT SAM CONTROL MODULE FUSE, RELAY MODULE (DIAGRAM 1 OF 4) FROM FUSE FROM FUSE 130 (DIAGRAM 2 OF 4) FROM FUSE 39 (DIAGRAM FROM FUSE 40 (DIAGRAM 1 OF 4) FROM FUSE 64 (DIAGRAM 4 OF 4) FUSE FROM RIGHT INSTRUMENT PANEL FUSE BOX (DIAGRAM 2 OF 4) FRONT CIGAR LIGHTER W/ ASHTRAY ILLUMINATION FRONT PASSENGER NECK-PRO HEAD RESTRAINT SOLENOID EIS (EZS) CONTROL UNIT FUEL PUMP CONTROL MODULE, ME-SFI (ME) CONTROL MODULE FUSE FUSE 137 FUSE 138 FUSE 64 FUSE FUSE GRN WIRE GRN/RED WIRE GRN/WHT WIRE GRN/YEL WIRE GRY/BLU WIRE INSTRUMENT CLUSTER ISM LEFT FRONT HEADLAMP UNIT MASTER WIPER MOTOR NCA WIRE PNK WIRE PNK/BLU WIRE PNK/GRN WIRE PNK/RED WIRE POWER ELECTRONICS CIRCULATION PUMP RELAY 1 RED WIRE RED/BLK WIRE RED/GRN WIRE RELAY RELAY/ SPARE 1 RELAY (CHANGE OVER CONTACT) RELAY/ SPARE RELAY 1 (CHANGE OVER CONTACT) RESTRAINT SYSTEMS CONTROL UNIT RIGHT FRONT HEADLAMP UNIT SLAVE WIPER MOTOR TO FUSE 61 (DIAGRAM 4 OF 4) TO REAR SAM CONTROL MODULE W/ FUSE, RELAY MODULE (DIAGRAM 4 OF 4) VIO WIRE YEL/GRY WIRE YEL/WHT WIRE

1 2 3 FLAT WIRE FLAT WIRE FLAT WIRE 1 2 CAN B L CAN B H 10 11 CAN-E H CAN-E L 14 5 13 11 12 9 3 1 7 H+ GND MLS- MLS+ H+ GND MLS- MLS+ 31 16 15 CAN-B L CAN-B H 3 2 1 DATA 31 UB BLK/WHT WIRE BLK/YEL WIRE BRN WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM ENGINE COMPARTMENT PREFUSE BOX FLAT WIRE FLAT WIRE FLAT WIRE FRONT SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT REAR ENGINE COMPT) FUSE (RIGHT REAR ENGINE COMPT) GRN WIRE GRN/WHT WIRE GRN/YEL WIRE HOT AT ALL TIMES LEFT FRONT DOOR CONTROL MODULE (IN LEFT FRONT DOOR) LEFT FRONT SEAT OPERATION SWITCH GROUP MEMORY 1, 2, 3 SWITCH MEMORY SWITCH RAISE/LOWER, FORWARD/ BACKWARD SWITCH RED WIRE RED/WHT WIRE RED/YEL WIRE STEERING COLUMN IN/OUT MOTOR STEERING COLUMN MODULE (TOP OF STEERING COLUMN) STEERING COLUMN UP/DOWN MOTOR