Mercedes-Benz S-class W221 facelift (2009-2013) blu/yel 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 7 8 9 10 11 12 13 14 15 16 17 18 19 20 VL VR VL HR ANT ANT ANT 1 2 3 4 5 6 7 8 9 10 30 31 GND VL GND VR GND HL GND HR BLK WIRE BLU/GRN WIRE BLU/PNK WIRE BLU/RED WIRE BLU/YEL WIRE BRN WIRE BRN/BLK WIRE BRN/GRY WIRE BRN/ORG WIRE BRN/PNK WIRE BRN/RED WIRE BRN/VIO WIRE BRN/YEL WIRE CAN B H CAN-B L ANT ANT GND GND GND GND GND CAN-FH CAN-FL CENTER CONSOLE KEYLESS GO ANTENNA (UNDER CENTER CONSOLE) COMFORT SENSOR COMPUTER DATA LINES SYSTEM GND ANT GRN/BRN WIRE GRN/RED WIRE GRY WIRE GRY/BLK WIRE INSTRUMENT CLUSTER KEYLESS GO CONTROL MODULE (RIGHT REAR TRUNK) LEFT FRONT DOOR LOCK UNIT LEFT FRONT KEYLESS GO SENSOR UNIT LEFT REAR DOOR KEYLESS GO ANTENNA LEFT REAR DOOR LOCK UNIT LEFT REAR KEYLESS GO SENSOR UNIT MULTI-FUNCTION DISPLAY NCA WIRE OPENING ASSIST MOTOR ORG/ WIRE REAR WINDOW ANTENNA AMPLIFIER MODULE (REAR CENTER OF ROOF) RED WIRE RED/GRN WIRE RED/GRY WIRE RED/VIO WIRE RIGHT FRONT DOOR LOCK UNIT RIGHT FRONT KEYLESS GO SENSOR UNIT RIGHT REAR DOOR KEYLESS GO ANTENNA (IN RIGHT REAR DOORS) RIGHT REAR DOOR LOCK UNIT RIGHT REAR KEYLESS GO SENSOR UNIT TRUNK KEYLESS GO ANTENNA (CENTER FRONT OF TRUNK) WHT/BRN WIRE YEL WIRE YEL/BRN WIRE YEL/GRN WIRE YEL/WHT 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

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

4 1 2 3 30 CAN-B L CAN-B H 31 4 5 6 3 2 1 MOTOR MOTOR HS (-) HS 1 HS 2 HS-UB 6 5 DATA UB BLK WIRE BLK/BLU WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/VIO WIRE BLU WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/RED WIRE COMPUTER DATA LINES SYSTEM DRIVER POWER WINDOW OUTSIDE MIRROR, TRUNK LID SWITCH GROUP FRONT POWER WINDOW DIODE MATRIX GRN WIRE GRN/BLU WIRE GRN/GRY WIRE GRN/WHT WIRE GRY WIRE GRY/WHT WIRE LEFT FRONT DOOR CONTROL MODULE (IN LEFT FRONT DOOR) LEFT FRONT HYDRAULIC WINDOW LIFTER FUSE LEFT FRONT HYDRAULIC WINDOW LIFTER PRESSURE SWITCH LEFT FRONT POWER WINDOW MOTOR (IN LEFT FRONT DOOR) LEFT FRONT RIGHT FRONT POWER POWER WINDOW WINDOW SWITCH SWITCH LEFT FRONT WINDOW CLOSED HYDRAULIC WINDOW LIFTER LIMIT SWITCH LEFT FRONT WINDOW CLOSED HYDRAULIC WINDOW LIFTER REDUNDANCY LIMIT SWITCH NCA WIRE PNK PNK WIRE PNK WIRE PNK/GRY WIRE PNK/WHT WIRE POWER WINDOW SOLENOID VALVE 3 POWER WINDOW SOLENOID VALVE 4 POWER WINDOW SOLENOID VALVE 5 POWER WINDOW SOLENOID VALVE 6 POWER WINDOW SOLENOID VALVE 7 POWER WINDOW SOLENOID VALVE 8 REAR POWER WINDOW DIODE MATRIX REAR SIDE WINDOWS CHILD SAFETY LOCK SWITCH RED WIRE TRUNK LID OPEN/ CLOSE SWITCH VIO/GRN WIRE W/ SPECIAL PROTECTION W/O SPECIAL PROTECTION

1 2 3 4 5 6 HS-UB 4 3 1 2 30 31 CAN-B L CAN-B H 4 5 2 3 6 FH-MOT FH-MOT HS 2 HS 1 31 BLK WIRE BLK/BLU WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/VIO WIRE BLU WIRE BLU/GRN WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/RED WIRE COMPUTER DATA LINES SYSTEM FH-TIEF HF-HOCH 31 UB DATA FUSE FUSE HOLDER (RIGHT FRONT OF TRUNK) GRN WIRE GRN/BLU WIRE GRN/GRY WIRE GRY WIRE GRY/WHT WIRE HOT AT ALL TIMES HS MOTOR + MOTOR + 31 HS-UB HYDRAULIC PUMP THERMO SWITCH LEFT REAR DOOR CONTROL MODULE (IN LEFT REAR DOOR) LEFT REAR DOOR POWER WINDOW/ ROLLER BLIND SWITCH GROUP LEFT REAR HYDRAULIC WINDOW LIFTER FUSE LEFT REAR HYDRAULIC WINDOW LIFTER PRESSURE SWITCH LEFT REAR POWER WINDOW MOTOR (IN LEFT REAR DOOR) LEFT REAR POWER WINDOW SWITCH LEFT REAR POWER WINDOW, SIDE WINDOW ROLLER BLIND SWITCH LEFT REAR SIDE ROLLER BLIND MOTOR (IN LEFT REAR DOOR) LEFT REAR WINDOW CLOSED HYDRAULIC WINDOW LIFTER LIMIT SWITCH LEFT REAR WINDOW CLOSED HYDRAULIC WINDOW LIFTER REDUNDANCY LIMIT SWITCH NCA WIRE PNK WIRE PNK/GRY WIRE PNK/WHT WIRE POWER WINDOW HYDRAULIC PUMP POWER WINDOW SOLENOID VALVE 1 POWER WINDOW SOLENOID VALVE 2 REAR INDIVIDUAL POWER (NOT USED) WINDOW SWITCHES REAR SIDE ROLLER BLIND/ROOF ROLLER BLIND/REAR ROLLER BLIND REAR WINDOW ROLLER BLIND SWITCH RED WIRE RED/WHT WIRE RELAY RIGHT REAR POWER WINDOW, SIDE WINDOW ROLLER BLIND SWITCH ROOF BLIND SWITCH SPECIAL PROTECTION VEHICLE ADDITIONAL USED) VIO/GRN WIRE W/ SPECIAL PROTECTION W/ TOP PROTECTION W/O SPECIAL PROTECTION W/O TOP PROTECTION WHT WIRE

4 3 2 1 CAN-B H 31 CAN-B L 30 BACKREST CONNECTOR BLK/BLU WIRE BLK/GRN WIRE BLU/BLK WIRE BLU/BRN WIRE BLU/GRY WIRE BLU/PNK WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/ORG WIRE BRN/PNK WIRE BRN/RED WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM GRN/BLK WIRE GRN/BLU WIRE GRN/BRN WIRE GRN/PNK WIRE GRN/RED WIRE GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE LEFT REAR FOOTWELL LEFT REAR MULTICONTOUR BACKREST CONNECTOR LEFT REAR MULTICONTOUR BACKREST CONTROL MODULE (IN DRIVER'S BACKREST) ORG/ WIRE RED/WHT WIRE RIGHT REAR MULTICONTOUR RIGHT REAR MULTICONTOUR BACKREST CONTROL MODULE VIO WIRE

BATTERY MANAGEMENT SYSTEM CONTROL UNIT (RIGHT REAR ENGINE COMPT) BLK/BLU WIRE BLK/GRN WIRE BLK/PNK WIRE BLK/WHT WIRE BLU WIRE BLU/RED WIRE BLU/YEL WIRE BRN/BLK WIRE BRN/WHT WIRE DC/DC CONVERTER CONTROL MODULE (RIGHT FRONT WHEELHOUSE) ENGINE OIL PUMP VALVE GRN WIRE GRY/BLK WIRE GRY/BLU WIRE NCA WIRE PNK/GRN WIRE PNK/YEL WIRE PYROTECHNICAL SEPARATOR (UNDER RIGHT SIDE OF DASH) RED WIRE RED/BLK WIRE RED/BLU WIRE RED/BRN WIRE RED/GRN WIRE RED/GRY WIRE RIGHT INTAKE CAMSHAFT HALL SENSOR (FRONT OF RIGHT CYLINDER BANK) ROTOR POSITION SENSOR (RIGHT REAR OF ENGINE) SIG TEMPERATURE SENSOR/ INTEGRATED STARTER/ ALTERNATOR (RIGHT REAR OF ENGINE) THREE DISK THERMOSTAT VALVE UPSTREAM TWC (KAT) (RIGHT REAR OF ENGINE COMPT) VIO/BRN WIRE VIO/GRY WIRE WHT WIRE YEL WIRE

ACCELERATOR PEDAL SENSOR (TOP OF ACCELERATOR PEDAL ASSEMBLY) BLK/BLU WIRE BLK/GRN WIRE BLK/PNK WIRE BLK/RED WIRE BLK/WHT WIRE BLU WIRE BLU/GRY WIRE BLU/YEL WIRE BRN WIRE BRN/PNK WIRE BRN/WHT WIRE BRN/YEL WIRE CAN I H CAN I L CRASH FUSE 116 FUSE 118 FUSE 128 GRN WIRE GRN/BRN WIRE GRN/PNK WIRE GRN/VIO WIRE GRY/BLU WIRE GRY/PNK WIRE HOT AT ALL TIMES HOT AT ALL TIMES RIGHT INSTRUMENT PANEL FUSE BOX FUSE 75 HV- HYBRID ENGINE HOOD CONTACT SWITCH NCA WIRE PNK/BLK WIRE PNK/GRN WIRE PNK/YEL WIRE POWER ELECTRONICS CIRCULATION PUMP RELAY 1 POWER ELECTRONICS CIRCULATION PUMP RELAY 2 POWER ELECTRONICS CONTROL UNIT (RIGHT SIDE UNDERCARRIAGE) REAR SAM CONTROL MODULE W/ FUSE, RELAY MODULE (CENTER TRUNK) RED WIRE RED/BLK WIRE RED/BLU WIRE RED/BRN WIRE RED/GRN WIRE RED/GRY WIRE RED/VIO WIRE RED/YEL WIRE STARTING/ CHARGING SYSTEM T EM T EM GND TNA U COS U SIN VIO/GRN WIRE VIO/YEL WIRE

15 U U UDB EKP LAUF A S SL P AIR PUMP (CENTER FRONT OF ENGINE) AIR PUMP RELAY BLK WIRE BLK/GRN WIRE BLK/RED WIRE BLU WIRE BLU/BRN WIRE BLU/GRY WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/PNK WIRE BRN/WHT WIRE BRN/YEL WIRE CAN C H CAN C L CAN-I H CAN-E H CAN-C H EGS COMPUTER DATA LINES COMPUTER DATA LINES SYSTEM CRASH CAN-I L CAN-E L CAN-C L D/S DS SIG EKP EKP LAUF ENGINE CIRCUIT 87 RELAY FUEL PRESSURE SENSOR (UNDER LEFT REAR OF VEHICLE) FUEL PUMP (FP) FUEL PUMP CONTROL MODULE (UNDER LEFT REAR SEAT) FUSE 20 FUSE 22 FUSE 21 STARTER CIRCUIT 50 RELAY FUSE 23 FUSE 24 FUSE 45 FUSE 55 GRN WIRE GRN/BLK WIRE GRN/BRN WIRE GRN/GRY WIRE GRN/PNK WIRE GRN/WHT WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/PNK WIRE GRY/YEL WIRE HOT AT ALL TIMES HOT W/ CIRCUIT 15 RELAY ENERGIZED LEFT REAR FOOTWELL ME-SFI (ME) CONTROL UNIT (RIGHT REAR OF ENGINE COMPT) NCA WIRE ORG/ WIRE PREMAIR SENSOR (BEHIND RIGHT SIDE OF RADIATOR) PURGE CONTROL VALVE (LEFT FRONT OF ENGINE COMPT) PWG+ (-) RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/GRY WIRE RED/VIO WIRE RED/WHT WIRE SIG SUPPLEMENTAL RESTRAINTS SYSTEM SYSTEM TNA 50 RV VIO/GRN WIRE VIO/YEL WIRE YEL/RED WIRE