Mercedes-Benz S-class W221 facelift (2009-2013) red Wiring diagrams

1 2 3 4 5 6 7 8 9 10 11 12 30 31 (+) CAN-I H 1 2 3 4 HV + HV - INTER LOCK OUT INTER LOCK IN 15 CAN-I L 6 21 20 8 9 30 INTERLOCK OUT 87 CANIH CANIL BATTERY MANAGEMENT SYSTEM CONTROL UNIT (RIGHT REAR ENGINE COMPT) BLK WIRE BLU WIRE BLU/YEL WIRE BRN WIRE COMPUTER DATA LINES SYSTEM CONTACTOR DC/DC CONVERTER CONTROL MODULE (RIGHT FRONT WHEELHOUSE) FUSE FUSE FUSE GRN WIRE GRN/RED WIRE GRN/WHT WIRE HIGH VOLT BATTERY COOLING SYSTEM SHUTOFF VALVE HIGH VOLTAGE BATTERY HIGH VOLTAGE FUSE BOX (CENTER REAR OF ENGINE COMPT) HOT AT ALL TIMES INTER LOCK IN 30 INTER LOCK OUT ME-SFI (ME) CONTROL MODULE (RIGHT REAR OF ENGINE COMPT) NCA WIRE PNK/BLK WIRE PNK/BLU WIRE PNK/GRN WIRE POWER ELECTRONICS CONTROL UNIT (RIGHT SIDE UNDER CARRIAGE) PYROTECHNICAL SEPARATOR (UNDER RIGHT RED WIRE RED/BLK WIRE RED/BRN WIRE RED/GRN WIRE RED/YEL WIRE RESTRAINT SYSTEM CONTROL MODULE (FRONT OF CENTER CONSOLE) RIGHT INSTRUMENT PANEL FUSE BOX (UNDER RIGHT SIDE DASH COVER) SIDE OF DASH) YEL/RED WIRE

1 2 3 4 5 6 CAN H CAN L BRN WIRE COMPUTER (UNDER RIGHT DATA LINES SYSTEM FRONT SEAT) FUSE 123 FUSE 124 GRN WIRE GRN/WHT WIRE HOT AT ALL TIMES LEFT FRONT REVERSIBLE EMERGENCY TENSIONING RETRACTOR (BASE OF LEFT "B" PILLAR) REAR SAM CONTROL MODULE W/ FUSE, RELAY MODULE (CENTER TRUNK) RED WIRE RED/WHT WIRE RIGHT FRONT REVERSIBLE EMERGENCY TENSIONING RETRACTOR (BASE OF RIGHT "B" PILLAR)

2 1 MOST OUT MOST IN ACC IDLT. ACC DET. BLK WIRE BLU WIRE BRN WIRE CABEL DET COMAND CONTROL UNIT D- D+ FUSE 111 GRN WIRE GRY WIRE GRY/BRN WIRE GRY/PNK WIRE HOT AT ALL TIMES LEFT INSTRUMENT PANEL FUSE BOX (UNDER LEFT SIDE DASH COVER) MEDIA INTERFACE CONNECTOR MEDIA INTERFACE CONTROL UNIT MOST 8 7 6 5 4 3 2 1 MOST DATA BUS CIRCUIT NCA WIRE ORG/ WIRE PNK WIRE RED WIRE RED/BLU WIRE TX RX USB SHIELD USB DIGITAL GND WAKE-UP WHT WIRE WHT/GRN WIRE WHT/GRY WIRE WHT/YEL WIRE YEL WIRE YEL/BRN WIRE

2 AM/FMM ANT BASS MODULE SPEAKER BLK WIRE BLU WIRE BLU/WHT WIRE BRN WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/WHT WIRE CAN B H CAN B L CC 1 2 3 4 5 COMPUTER DATA LINES SYSTEM FUSE 119 FUSE 129 FUSE 131 FZV GRN WIRE GRY WIRE GRY/RED WIRE HIGH DEFINITION TUNER CONTROL UNIT HOT AT ALL TIMES KEYLESS GO CONTROL MODULE (IF EQUIPPED) (RIGHT REAR TRUNK) LEFT REAR SURROUND SPEAKER NCA WIRE REAR SAM CONTROL MODULE W/ FUSE, RELAY MODULE REAR WINDOW ANTENNA AMPLIFIER MODULE (REAR CENTER OF ROOF) RED WIRE RED/BLK WIRE RED/GRN WIRE RED/VIO WIRE RED/WHT WIRE SHIELD TWEETER LEFT REAR DOOR SPEAKER GROUP TWEETER RIGHT REAR DOOR SPEAKER GROUP VIO WIRE WHT WIRE WHT/GRN WIRE WOOFER

"FORWARD" BUTTON 1 2 3 31 LIN-BUS 30 13 3 CAN-A L CAN-A H 31 PROGKEY CAN-A L WBS-OUT 30 CAN-A H WBS-IN WBS-LED 5 13 16 6 7 LSP+ LSP- ANTENNA SPLITTER BACK BUTTON BACKREST SIDE SEAT CONTOUR BUTTON BLK WIRE BLK/WHT WIRE BLU WIRE BRN WIRE BRN/RED WIRE BUTTON "BACK" BUTTON "ON" CAN B H CAN B L CAN D H CAN D L CENTER CONSOLE BUTTON GROUP COMAND CONTROL UNIT COMPUTER DATA LINES SYSTEM DISC/RADIO QUICK SELECT BUTTON EMERGENCY CALL SYSTEM CONTROL UNIT (LEFT FRONT OF TRUNK) FIRM MASSAGE FUNCTION BUTTON FREELY PROGRAMM- ABLE BUTTON FRONT CENTRAL OPERATING UNIT GENTLE MASSAGE FUNCTION BUTTON GPS GRN WIRE GRY WIRE GRY/RED WIRE GRY/WHT WIRE HAZARD WARNING SYSTEM BUTTON HEAD RESTRAINT FOLDING BUTTON INCREASE VOLUME BUTTON LEFT "BACK" BUTTON LEFT REAR FOOTWELL LEFT SCREEN BUTTON LEFT SEAT SELECTION CAN-AL CAN-AH BUTTON LUMBAR SUPPORT HEIGHT ADJUSTMENT BUTTON LUMBAR SUPPORT SEAT CONTOUR BUTTON MULTI- CONTOUR SEAT QUICK SELECT BUTTON NCA WIRE PORTABLE CTEL ANTENNA AMPLIFIER (LEFT SIDE OF TRUNK) RCP(HBF) CONTROL UNIT REAR TURN/ FUSH CONTROL REAR WINDOW ROLLER SUN BLIND BUTTON RED WIRE RED/WHT WIRE REDUCE VOLUME BUTTON RIGHT "BACK" BUTTON RIGHT SCREEN BUTTON RIGHT SEAT SELECTION BUTTON TELEPHONE, GPS ROOF ANTENNA TELEPHONE/ NAVIGATION QUICK SELECT BUTTON TRANSMISSION MODES BUTTON TURN/ PUSH CONTROL UHI PORTABLE CTEL HOLDER (UNIVERSAL HANDY INTERFACE) UNIVERSAL PORTABLE CTEL INTERFACE (UPCI (UHI)) CONTROL MODULE UPPER CONTROL PANEL CONTROL MODULE VIO WIRE VOLUME CONTROL WHT/YEL WIRE YEL WIRE YEL/BLK WIRE

BRN WIRE BRN/YEL WIRE CAN B H CAN B L CHASSIS CIRCUIT 87 RELAY COMPUTER DATA LINES SYSTEM ELECTRIC PARKING BRAKE CONTROL UNIT (LEFT REAR WHEELWELL) ELECTRIC PARKING BRAKE SWITCH FRONT SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT REAR ENGINE COMPT) FUSE 35 GRN WIRE GRN/BRN WIRE GRN/WHT WIRE GRY/BLU WIRE GRY/BRN WIRE HOT AT ALL TIMES ENGINE COMPARTMENT FUSE 6 PREFUSE BOX (RIGHT REAR ENGINE COMPT) RED WIRE RED/BLU WIRE RED/YEL WIRE SW 1 CAN G H 30 SW 4 CAN G L 87 SW 3 SW 6 VIO/BRN WIRE

BLK WIRE BLU WIRE BRN WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/ORG WIRE BRN/VIO WIRE BRN/WHT WIRE BRN/YEL WIRE GRN WIRE GRY WIRE LEFT FRONT DOOR TWEETER LEFT REAR DOOR TWEETER NCA WIRE ORG/ WIRE RED WIRE RED/BLK WIRE RIGHT FRONT DOOR TWEETER RIGHT FRONT DOOR WOOFER RIGHT REAR DOOR TWEETER VIO WIRE WHT WIRE YEL WIRE

BASS MODULE SPEAKER BLK WIRE BLU WIRE BRN WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/ORG WIRE BRN/VIO WIRE BRN/WHT WIRE BRN/YEL WIRE GRN WIRE GRY WIRE LEFT FRONT DOOR SPEAKER LEFT FRONT DOOR WOOFER LEFT REAR DOOR WOOFER ORG/ WIRE RED WIRE RED/BLK WIRE RIGHT FRONT DOOR SPEAKER RIGHT REAR DOOR WOOFER RIGHT REAR SURROUND SPEAKER SOUND AMPLIFIER (LEFT SIDE OF LUGGAGE COMPT) VIO WIRE WHT WIRE YEL WIRE

B H B L BELT TENSION SENSOR (RIGHT FRONT SEAT BELT ANCHOR ASSEMBLY) BLK WIRE BLK/RED WIRE BLK/VIO WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/PNK WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/PNK WIRE BRN/RED WIRE BRN/VIO WIRE BRN/WHT WIRE BRN/YEL WIRE CAK, FA DS, FA+ CAN L CAN H CRASH OUT CAK, BF COMPUTER DATA LINES COMPUTER DATA LINES SYSTEM CRASH DRIVER BUCKLE RIGHT REAR ETR SQUIB WINDOW AIR BAG SQUIB DS BF + DS HL+ DS HR - EXCEPT HYBRID FRONT PASSENGER BUCKLE ETR SQUIB FUSE 61 GRN WIRE GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/WHT WIRE GSS, BF SS-FA GSS, FA UFS, BF HOT W/ CIRCUIT LEFT FRONT SIDE AIR BAG SQUIB LEFT REAR ETR SQUIB (LEFT "C" PILLAR) LEFT REAR RIGHT FRONT SIDE AIR BAG SIDE AIR BAG SQUIB SQUIB LEFT REAR WINDOW AIR BAG SQUIB NCA WIRE PNK/GRN WIRE PYROTECHNICAL SEPERATOR (UNDER RIGHT SIDE OF DASH) RED WIRE RED/BLU WIRE RED/GRN WIRE RED/VIO WIRE RED/WHT WIRE RED/YEL WIRE RESTRAINT SYSTEMS CONTROL MODULE (FRONT OF CENTER CONSOLE) RIGHT REAR RIGHT REAR SIDE AIR BAG ETR SQUIB SQUIB (RIGHT "C" PILLAR) SEAT OCCUPIED RECOGNITION PRESSURE SENSOR SIG SS BF + SYSTEM UFS BF + VIO/BLU WIRE VIO/GRN WIRE VIO/GRY WIRE WHT WIRE WHT/BRN WIRE WHT/GRN WIRE WHT/VIO WIRE WHT/YEL WIRE YEL WIRE YEL/RED WIRE

1 XI BELT TENSION SENSOR (RIGHT FRONT SEAT BELT ANCHOR ASSEMBLY) BLK/RED WIRE BLU WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/RED WIRE BRN/WHT WIRE CAN B H CAN B L COMPUTER DATA LINES SYSTEM HOT AT ALL TIMES FUSE 93 PANEL FUSE BOX (UNDER LEFT SIDE DASH COVER) LEFT INSTRUMENT NCA WIRE POWER DISTRIBUTION SYSTEM RED WIRE RED/WHT WIRE RED/YEL WIRE SEAT OCCUPIED RECOGNITION PRESSURE SENSOR SIG SIG 31 WHT WIRE WSS (WEIGHT SENSING SYSTEM) CONTROL UNIT (RIGHT FRONT SEAT)