Mercedes-Benz S-class W221 (2005-2009) memory store button switch Wiring diagrams

1 2 3 FLAT WIRE FLAT WIRE FLAT WIRE UB 31 DATA 1 2 CAN B L CAN B H 12 11 16 15 CAN-F L CAN-F H CAN-B L CAN-B H 16 15 CAN-B L CAN-B H 26 25 CAN-B L CAN-B H BLK WIRE BLK/GRN WIRE BLU WIRE BRN WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE CENTRAL GATEWAY CONTROL MODULE CENTRAL LUMBAR CUSHION PIEZO VALVE CENTRAL LUMBAR CUSHION PRESSURE SENSOR COMPUTER DATA LINES SYSTEM FRONT SAM CONTROL MODULE W/ FUSE/ RELAY MODULE LEFT BACKREST LATERAL SUPPORT CUSHION PIEZO VALVE LEFT BACKREST LATERAL SUPPORT CUSHION PRESSURE SENSOR LEFT FRONT DOOR CONTROL MODULE (IN LEFT FRONT DOOR) LEFT FRONT SEAT BACKREST CUSHION VALVE GROUP LEFT FRONT SEAT OPERATION SWITCH GROUP LOWER LUMBAR CUSHION PIEZO VALVE LOWER LUMBAR CUSHION PRESSURE SENSOR MEMORY 1, 2, 3 SWITCH MEMORY STORE BUTTON SWITCH NCA WIRE ORG/GRN WIRE ORG/WHT WIRE RED/WHT WIRE RIGHT BACKREST LATERAL SUPPORT CUSHION PIEZO VALVE (W/ DYNAMIC SEAT) RIGHT BACKREST LATERAL SUPPORT CUSHION PRESSURE SENSOR (W/ DYNAMIC SEAT) SHOULDER SHOULDER CUSHION CUSHION PRESSURE PIEZO SENSOR VALVE UPPER LUMBAR CUSHION PIEZO VALVE UPPER LUMBAR CUSHION PRESSURE SENSOR WHT WIRE WHT/GRN WIRE YEL WIRE YEL/WHT WIRE

1 2 3 4 5 6 8 9 7 10 BSM WARN BSM BEREIT 10 8 FLAT WIRE 31 DATA 31 4 3 1 2 30 31 CAN-B L CAN-B H AMBIENT LAMP AMBIENT LAMP FLAT WIRE FLAT WIRE 4 3 AUTOMATIC DIMMING MIRROR BRN WIRE BRN/RED WIRE CAN B L CAN B H COMPUTER DATA LINES SYSTEM DRIVER POWER WINDOW OUTSIDE MIRROR, TRUNKLID SWITCH GROUP FLAT WIRE FLAT WIRE FLAT WIRE FLAT WIRE FLAT WIRE 4 3 FLAT WIRE FLAT WIRE 4 9 FLAT WIRE FLAT WIRE 7 5 FLAT WIRE FLAT WIRE FLAT WIRE FLAT WIRE FLAT WIRE FLAT WIRE 1 2 3 UB 31 DATA FLAT WIRE FLAT WIRE FLAT WIRE 4 5 6 31 UB DATA FLAT WIRE FLAT WIRE FLAT WIRE 9 7 6 FLAT WIRE FLAT WIRE FLAT WIRE FLAT WIRE FLAT WIRE FLAT WIRE FLAT WIRE FLAT WIRE FOLD IN/ FOLD OUT SWITCH FUSE 70 HOT AT ALL TIMES HOT AT ALL TIMES RIGHT FUSE 80 INSTRUMENT PANEL FUSE BOX LEFT ELECTRICALLY ADJUSTABLE, HEATED EXTERIOR MIRROR LEFT EXTERIOR MIRROR TURN SIGNAL LAMP LEFT FRONT SEAT OPERATION SWITCH GROUP LEFT/RIGHT OUTSIDE MIRROR ADJUSTMENT SELECTION SWITCH MEMORY 1, 2, 3 SWITCH MEMORY STORE BUTTON SWITCH MIRROR ADJUSTMENT ROCKER SWITCH MIRROR FOLD-IN MOTOR MIRROR HEATER MIRROR HEATER FLAT WIRE FLAT WIRE 4 9 MIRROR IN/OUT ADJUST- MENT MOTOR MIRROR UP/DOWN ADJUST- MENT MIRROR IN/OUT ADJUST- MENT MOTOR MIRROR UP/DOWN ADJUST- MENT MOTOR MOTOR FLAT WIRE NCA WIRE RED WIRE RIGHT ELECTRICALLY ADJUSTABLE, HEATED EXTERIOR MIRROR RIGHT EXTERIOR MIRROR TURN SIGNAL LAMP 8 10

1 2 3 4 5 6 30 31 CAN-B H CAN-B L 1 2 3 4 5 6 7 8 MOT-L MOT-NV MOT-NV MOT-NV MOT-LV MOT-L MOT-NV MOT-LV 1 2 CAN B L CAN B H 7 8 9 10 11 12 SIBL SIBL (+) (+) 9 10 11 12 13 MOT-NV MOT-NV MOT-LV MOT-NV MOT-LV BLK WIRE BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BLU/PNK WIRE BLU/RED WIRE BLU/VIO WIRE BRN WIRE BRN/RED WIRE COMPUTER DATA LINES SYSTEM FLAT WIRE FLAT WIRE FLAT WIRE 1 2 3 UB 31 DATA FUSE 143 FUSE 144 GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GRN/PNK WIRE GRN/YEL WIRE GRY/PNK WIRE HOT AT ALL TIMES HS L HS NV+ HS NV+ HS LV+ HS LV- HS LV- HS NV+ HS NV+ HS NV+ HS L+ HS NV- HS NV- LEFT REAR DOOR CONTROL MODULE LEFT REAR HEAD RESTRAINT INCLINATION ADJUSTMENT MOTOR LEFT REAR SEAT BELT COMFORT FEATURE SOLENOID (UNDER LEFT REAR WINDOW SHELF) LEFT REAR SEAT CUSHION INCLINATION ADJUSTMENT MOTOR LEFT REAR SEAT OPERATION SWITCH GROUP MEMORY 1, 2, 3 SWITCH 1 2 3 MEMORY STORE BUTTON SWITCH MOT L-(+) PNK/BLK WIRE PNK/BRN WIRE PNK/GRN WIRE PNK/RED WIRE PNK/VIO WIRE PNK/WHT WIRE PNK/YEL WIRE REAR SAM CONTROL MODULE W/ FUSE, RELAY MODULE REAR SEATS CONTROL MODULE RED WIRE RED/BLU WIRE RED/GRN WIRE RED/WHT WIRE RIGHT REAR BACKREST ANGLE ADJUSTMENT MOTOR RIGHT REAR DOOR CONTROL MODULE (IN RIGHT REAR DOOR) RIGHT REAR SEAT BELT COMFORT FEATURE SOLENOID RIGHT REAR SEAT OPERATION SWITCH GROUP RIGHT SEAT FORE/AFT ADJUSTMENT MOTOR (UNDER RIGHT REAR SEAT) SEATS SYSTEM VIO/BLK WIRE VIO/BLU WIRE VIO/GRN WIRE VIO/GRY WIRE VIO/WHT WIRE

1 2 CAN B L CAN B H 3 6 CAN-A L CAN-A H BLK WIRE BLK/WHT WIRE BRN WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE CAN B H CAN B L CAN-F H CAN-F L CENTRAL GATEWAY CONTROL MODULE COMPUTER DATA LINES SYSTEM EARLY PRODUCTION FLAT WIRE FLAT WIRE FLAT WIRE 1 2 3 UB 31 DATA FRONT CENTRAL OPERATING UNIT FRONT SAM CONTROL MODULE W/ FUSE/ RELAY MODULE GRN/BLK WIRE GRN/BLU WIRE GRN/GRY WIRE GRN/PNK WIRE GRN/RED WIRE GRN/WHT WIRE GRY/BLK WIRE GRY/GRN WIRE GRY/RED WIRE LATE PRODUCTION MEMORY 1, 2, 3 SWITCH 1 2 3 MEMORY STORE BUTTON SWITCH RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE RIGHT FRONT DOOR CONTROL MODULE (IN RIGHT FRONT DOOR) RIGHT FRONT SEAT CONTROL MODULE RIGHT FRONT SEAT OPERATION SWITCH GROUP RIGHT REAR FOOTWELL LAMP SEATS SYSTEM VIO/GRY WIRE YEL 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 FLAT WIRE FLAT WIRE FLAT WIRE FRONT PREFUSE FRONT SAM CONTROL MODULE W/ FUSE/ RELAY MODULE FUSE 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 STORE BUTTON SWITCH RAISE/LOWER, FORWARD/ BACKWARD SWITCH RED WIRE RED/WHT WIRE RED/YEL WIRE STEERING COLUMN ADJUSTMENT, STEERING WHEEL HEATER SWITCH STEERING COLUMN FORWARD/BACKWARD MOTOR STEERING COLUMN MODULE (AT TOP OF STEERING COLUMN) STEERING COLUMN RAISE/LOWER MOTOR