Mercedes-Benz S-class W221 facelift (2009-2013) High/low bus circuit

1 2 3 CAN-C L CAN-C H 31 1 2 3 CAN-I L CAN-I H 31 1 2 CAN-C L CAN-C H 1 2 CAN-F L CAN-F H 1 2 CAN-H L CAN-H H 1 2 CAN-I L CAN-I H 10 20 CAN-I L CAN-I H 10 4 CAN-I L CAN-I H 11 1 CAN-F L CAN-F H 11 10 CAN-H L CAN-H H 12 11 CAN-F L CAN-F H 12 13 CAN-F L CAN-F H 19 18 CAN-H L CAN-H H 2 1 CAN-C L CAN-C H 2 3 CAN-H L CAN-H H 4 3 CA CAN-I L CAN-I H 55 42 53 40 CAN-C L CAN-C H CAN-I L CAN-I H 6 3 CAN-H L CAN-H H 9 8 CA CAN-I L CAN-I H BATTERY MANAGEMENT SYSTEM CONTROL UNIT BLU WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE CENTRAL CAN VOLTAGE DISTRIBUTOR CONNECTOR CENTRAL GATEWAY CONTROL MODULE (LEFT FRONT COMAND CONTROL UNIT DC/DC CONVERTER CONTROL MODULE (RIGHT FRONT DIRECT SELECT INTELLIGENT SERVO MODULE FOR (IF EQUIPPED) (TRANSMISSION HOUSING) DRIVETRAIN CAN VOLTAGE DISTRIBUTOR CONNECTOR DTR CONTROL UNIT (IF EQUIPPED) (UNDER PLATE IN RIGHT ELECTRIC CONTROL UNIT (VGS) ELECTRIC REFRIGERANT COMPRESSOR ENGINE COMPT) ESP CONTROL MODULE (5.5L) REGENERATIVE BRAKING HYBRID CAN VOLTAGE DISTRIBUTOR CONNECTOR (3.5L HYBRID) INSTRUMENT CLUSTER ME-SFI (ME) CONTROL UNIT (RIGHT REAR OF POWER ELECTRONICS CONTROL UNIT (RIGHT SIDE UNDERCARRIAGE) RADAR SENSOR SYSTEM CONTROL UNIT (W/ DISTANCE PLUS) SYSTEM CONTROL UNIT (3.5L HYBRID) (RIGHT FRONT ENGINE COMPT) UPPER FOOTWELL) VEHICLE DYNAMICS CAN VOLTAGE DISTRIBUTOR CONNECTOR VIO WIRE VIO/WHT WIRE WHEELHOUSE) YAW RATE, LATERAL, LONGITUDINAL ACCELERATION SENSOR YEL WIRE YEL/WHT WIRE

1 2 3 CAN-E L CAN-E H 31 1 2 CAN-E L CAN-E H 11 2 CAN-E L CAN-E H 13 12 CAN-E L CAN-E H 17 18 CAN-E L CAN-E H 2 1 CAN E L CAN E H 2 3 CAN-E L CAN-E H 3 1 CAN E L CAN E H 4 3 CAN-E L CAN-E H 5 6 CAN-E L CAN-E H 54 41 CAN-E L CAN-E H 7 6 CAN-E L CAN-E H ABC CONTROL MODULE (LEFT REAR OF ENGINE COMPT) AIRMATIC W/ ADS CONTROL MODULE (LEFT REAR OF BRN WIRE CAN E H CAN E L CAN-E L CAN-E H CENTRAL GATEWAY CONTROL MODULE (LEFT FRONT UPPER FOOTWELL) CHASSIS CAN/COCKPIT VOLTAGE DISTRIBUTOR CONNECTOR CHASSIS CAN/FFS (RBA) VOLTAGE DISTRIBUTOR CONNECTOR EIS (EZS) CONTROL UNIT ELECTROHYDRAULIC POWER STEERING (RIGHT FRONT ENGINE COMPT) ESP CONTROL MODULE (5.5L) FOOTWELL) FRONT SAM CONTROL MODULE GRN WIRE GRN/WHT WIRE GRN/YEL WIRE LEFT FRONT REVERSIBLE EMERGENCY TENSIONING ME-SFI (ME) CONTROL MODULE (RIGHT REAR OF MULTI-FUNCTION CAMERA (IF EQUIPPED) NIGHT VISION ASSIST CONTROL UNIT (IF EQUIPPED) (LEFT FRONT FOOTWELL) PTS CONTROL MODULE RADAR SENSORS CONTROL UNIT (SGR) (W/ DISTANCE PLUS) (RIGHT SIDE OF TRUNK) RESTRAINT SYSTEMS CONTROL MODULE (FRONT OF CENTER CONSOLE) RETRACTOR (BASE OF LEFT FRONT "B" PILLAR) RETRACTOR (BASE OF RIGHT FRONT "B" PILLAR) RIGHT FRONT REVERSIBLE EMERGENCY TENSIONING STEERING COLUMN MODULE (TOP OF STEERING COLUMN) TPM CONTROL MODULE (RIGHT FRONT VIDEO, RADAR SENSOR CONTROL UNIT (W/ DISTRONICS PLUS) W/ ABC W/ FUSE, RELAY MODULE (LEFT REAR ENGINE COMPT)

1 2 CAN B L CAN B H 14 13 CAN-B L CAN-B H 15 14 CAN-B L CAN-B H 16 15 CAN-B L CAN-B H 2 4 CAN-B L CAN-B H 26 25 CAN-B L CAN-B H 3 4 CAN-B L CAN-B H 6 12 CAN-B L CAN-B H 7 9 CAN-B L CAN-B H 9 25 CAN-B L CAN-B H AAC (KLA) CONTROL UNIT (CENTER DASH) BACKUP CAMERA CONTROL UNIT (IF EQUIPPED) BRN WIRE BRN/BLK WIRE BRN/GRY WIRE BRN/RED WIRE BRN/YEL WIRE CENTRAL GATEWAY CONTROL MODULE (LEFT FRONT DS (FDS)) (LEFT FRONT OF TRUNK) EIS (EZS) CONTROL UNIT FRONT SAM CONTROL MODULE W/ FUSE/ RELAY MODULE INTERIOR CAN/COCKPIT VOLTAGE DISTRIBUTOR CONNECTOR KEYLESS GO CONTROL UNIT (IF EQUIPPED) LEFT FRONT DOOR CONTROL MODULE (IN LEFT FRONT DOOR) LEFT FRONT SEAT CONTROL MODULE LEFT INTERIOR CAN/FFS (RBA) VOLTAGE DISTRIBUTOR CONNECTOR LEFT REAR DOOR CONTROL MODULE (IN LEFT REAR DOOR) LEFT REAR MULTICONTOUR BACKREST CONTROL MODULE PNEUMATIC PUMP FOR DYANAMIC SEAT CONTROL (W/ DYNAMIC SEAT REAR SAM CONTROL MODULE W/ FUSE, RELAY MODULE RIGHT REAR MULTICONTOUR BACKREST CONTROL MODULE UPPER CONTROL PANEL CONTROL MODULE UPPER FOOTWELL)

1 2 3 CAN-A L CAN-A H 31 1 2 3 CAN-B L CAN-B H 31 1 2 CAN B L CAN B H 1 2 CAN-A L CAN-A H 1 3 CB CAN-B L CAN-B H 12 3 CAN-B L CAN-B H 13 3 CAN-A L CAN-A H 15 14 CAN-B L CAN-B H 3 4 CAN-A L CAN-A H 3 6 CAN-A L CAN-A H 4 3 CAN B L CAN B H 4 8 CAN-A L CAN-A H 5 6 CAN-B L CAN-B H 7 9 CAN-B L CAN-B H 9 10 CAN-B L CAN-B H 9 18 CAN-B L CAN-B H BLK WIRE BLK/WHT WIRE BRN WIRE BRN/BLK WIRE BRN/RED WIRE COMAND CONTROL UNIT FRONT CENTRAL OPERATING UNIT GRN WIRE PNK/BRN WIRE PTS CONTROL MODULE (RIGHT SIDE TRUNK) RCP (HBF) CONTROL MODULE REAR AC CONTROL MODULE (IF EQUIPPED) REAR SEATS CONTROL MODULE (RIGHT SIDE OF TRUNK) RIGHT FRONT DOOR CONTROL MODULE (IN RIGHT FRONT DOOR) RIGHT FRONT SEAT CONTROL MODULE RIGHT INTERIOR CAN/FFS (RBA) RIGHT REAR DOOR CONTROL MODULE (IN RIGHT REAR DOOR) TELEMATICS CAN VOLTAGE DISTRIBUTOR CONNECTOR VOLTAGE DISTRIBUTOR CONNECTOR WEIGHT SENSING SYSTEM (WSS) CONTROL UNIT (RIGHT FRONT SEAT) YEL WIRE