Mercedes-Benz S-class W221 facelift (2009-2013) cockpit switch group Wiring diagrams

1 2 CAN-C L CAN-C H COMPUTER DATA LINES SYSTEM 10 6 12 4 1 30 CAN-B L CAN-B H 30 31 55 42 CAN-C L CAN-C H AUTOMATIC CHILD SEAT RECOGNITION AIR BAG OFF IND LAMP BLK WIRE BLU WIRE BLU/WHT WIRE BRN WIRE BRN/GRY WIRE BRN/RED WIRE CAN H H CAN H L CAN-F H CAN-F L COCKPIT SWITCH GROUP COMAND COMAND DISPLAY DISPLAY SWIVEL SWIVEL LEFT RIGHT SWITCH SWITCH COMAND DISPLAY DIMMER BRIGHTNESS CONTROL COMPUTER DATA LINES SYSTEM DTR CONTROL UNIT DTR RADAR SENSOR DTR WARNING LAMP IND ELECTRIC CONTROL UNIT (VGS) ESP LEVEL OFF ADJUSTMENT SWITCH SWITCH EXTERIOR LIGHTS, INSTRUMENT CLUSTER SYSTEM FREELY PROGRAMMABLE BUTTON FRONT CENTRAL OPERATING UNIT FUSE 66 GRN WIRE GRY WIRE GRY/RED WIRE GRY/YEL WIRE HAZARD WARNING SYSTEM BUTTON HOT W/ CHASIS CIRCUIT 87 RELAY ENERGIZED INSTRUMENT CLUSTER ME-SFI (ME) CONTROL MODULE (RIGHT REAR OF ENGINE COMPT) OUTPUT SPEED SENSOR PTS OFF SWITCH RED WIRE RED/BLK WIRE RED/GRN WIRE RED/WHT WIRE SIG UPPER CONTROL PANEL CONTROL UNIT VIO WIRE VIO/WHT WIRE YEL WIRE YEL/BLK WIRE YEL/WHT WIRE

1 2 CAN B L CAN B H 11 10 CAN-E L CAN-E H 12 13 CAN-F L CAN-F H 6 12 2 CAN-B L CAN-B H ADJUSTABLE, HEATED OUTSIDE MIRROR ANALOG CLOCK AUDIBLE TURN SIGNAL INDICATOR BLK WIRE BLU WIRE BRN WIRE BRN/GRY WIRE BRN/RED WIRE COCKPIT SWITCH GROUP COMBINATION SWITCH COMPUTER DATA LINES SYSTEM FOG LAMP INDICATOR FRONT CENTRAL OPERATING UNIT GRN WIRE GRN/WHT WIRE GRY/RED WIRE GRY/YEL WIRE HAZARD WARNING SYSTEM BUTTON HCS (SRA) SWITCH HEADLAMP FLASHER/ HIGH BEAM SWITCH HOT AT ALL TIMES INTERIOR PREFUSE BOX FUSE INSTRUMENT CLUSTER LEFT FRONT DOOR CONTROL MODULE (IN LEFT FRONT DOOR) LEFT TURN SIGNAL IND LEFT, RIGHT TURN SIGNAL SWITCH NIGHT VISION ASSIST BUTTON OUTSIDE MIRROR AMBIENT LAMP OUTSIDE MIRROR AMBIENT LAMP LEFT ELECTRICALLY ADJUSTABLE, HEATED OUTSIDE MIRROR OUTSIDE MIRROR TURN SIGNAL LAMP OUTSIDE MIRROR TURN SIGNAL LAMP RIGHT ELECTRICALLY REAR FOG LAMP INDICATOR RED WIRE RED/WHT WIRE RIGHT FRONT DOOR CONTROL MODULE (IN RIGHT FRONT DOOR) RIGHT TURN SIGNAL IND ROTARY LIGHT SWITCH STEERING COLUMN MODULE (TOP OF STEERING COLUMN) UPPER CONTROL PANEL CONTROL MODULE YEL WIRE YEL/BLK WIRE YEL/WHT WIRE

1 12 6 2 8 7 31 CAN-B H CAN-B L 31 12 13 CAN-F L CAN-F H 15 16 CAN-B H CAN-B L BRN WIRE BRN/GRY WIRE BRN/RED WIRE BRN/YEL WIRE COCKPIT SWITCH GROUP COMPUTER DATA LINES SYSTEM EXTERIOR LAMP SWITCH FRONT SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT REAR ENGINE COMPT) FUSE 6 PREFUSE BOX (RIGHT REAR ENGINE COMPT) GRY/RED WIRE GRY/YEL WIRE HCS (SRA) SWITCH HCS PUMP (LEFT FRONT WHEELWELL) HOT AT ALL TIMES INSTRUMENT CLUSTER LIN BUS RED WIRE RED/GRY WIRE UPPER CONTROL PANEL CONTROL UNIT YEL WIRE YEL/WHT WIRE

1 2 3 4 5 6 7 8 9 10 11 12 31 31 FRB VL 30 HSK BEL CAN-B L 1 3 2 NIGHT VISION ASSIST BUTTON 2 4 5 10 7 9 SW 6 SW 4 CAN G L CAN G H SW 3 SW 1 ANALOG CLOCK ATA(EDW) FUNCTION INDICATOR AUTOMATIC CHILD SEAT RECOGNITION AIRBAG OFF IND LAMP BLU WIRE BRAKE FLUID INDICATOR SWITCH (LEFT REAR OF ENGINE COMPT) BRN WIRE BRN/GRY WIRE BRN/RED WIRE BRN/WHT WIRE CAN B H COCKPIT SWITCH GROUP COMAND DISPLAY BRIGHTNESS CONTROL COMPUTER DATA LINES SYSTEM CRUISE CONTROL SYSTEM DEFROST/ HEATED WINDSHIELD BUTTON ELECTRIC PARKING BRAKE CONTROL UNIT (LEFT REAR WHEELWELL) ELECTRIC PARKING BRAKE SWITCH ESP OFF SWITCH FRB VR 30 GRN WIRE GRN/BRN WIRE GRN/WHT WIRE GRY WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/RED WIRE GRY/YEL WIRE HEATED REAR WINDOW BUTTON INTERIOR LIGHTS SYSTEM COMPUTER DATA LINES SYSTEM LEFT AUTOMATIC AIR CONDITIONING BUTTON LEFT BLOWER BUTTON LEFT TEMPERATURE SELECTION BUTTON LEVEL ADJUSTMENT SWITCH NIGHT VIEW ASSIST DISPLAY BRIGHTNESS CONTROL SWITCH, CONTROLS ILLUMINATION OFF/ RESIDUAL HEAT BUTTON OVERHEAD CONTROL PANEL CIRCUIT PTS LEFT COMAND OFF DISPLAY SWITCH SWIVEL SWITCH RED WIRE RED/BLK WIRE RED/WHT WIRE RIGHT AIR BLOWER RECIRCULATION BUTTON BUTTON RIGHT AUTOMATIC AIR CONDITIONING BUTTON RIGHT COMAND DISPLAY SWIVEL SWITCH RIGHT TEMPERATURE SELECTION BUTTON ROTARY LIGHT SWITCH SIG STH/ZUH/ RESIDUAL HEAT BUTTON UPPER CONTROL PANEL CONTROL UNIT VIO/BRN WIRE YEL WIRE YEL/BLK WIRE YEL/GRN WIRE YEL/RED WIRE

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