BMW 3 series E46 facelift (2001-2006) driver's seat memory control unit Wiring diagrams

1 2 3 LUMBAR SW - ADJUSTMENT SWITCHES BLK/VIO WIRE BLK/YEL WIRE BLU/GRY WIRE BLU/RED WIRE BRN WIRE COMPUTER DATA LINES SYSTEM DRIVER'S SEAT BACKREST ADJUSTMENT MOTOR DRIVER'S SEAT FORWARD/ BACKWARD ADJUSTMENT MOTOR DRIVER'S SEAT HEIGHT ADJUSTMENT MOTOR DRIVER'S SEAT MEMORY CONTROL UNIT DRIVER'S SEAT TILT ADJUSTMENT MOTOR FUSE FUSE HOLDER (GLOVE BOX) GENERAL MODULE CONTROL UNIT (BEHIND GLOVE BOX) GRN/VIO WIRE GRN/YEL WIRE GRY/BLK WIRE GRY/BRN WIRE HOT AT ALL TIMES ILLUM INSTRUMENT CLUSTER CONTROL MODULE LUMBAR SW + PROGRAM SWITCHES (3) RED/BLK WIRE RED/BRN WIRE SEAT BACKREST SEAT HEIGHT SEAT TILT SEAT FWD/BACK SEAT BACKREST) SEATS SYSTEM (LUMBAR CIRCUIT, IF EQUIPPED) SET SWITCH VIO/BLK WIRE VIO/BRN WIRE VIO/GRY WIRE VIO/RED WIRE WHT/RED/YEL WIRE YEL/BLK WIRE YEL/BRN WIRE

1 2 3 LUMBAR SW - ADJUSTMENT SWITCHES BLK/VIO WIRE BLK/YEL WIRE BLU/GRY WIRE BLU/RED WIRE BRN WIRE COMPUTER DATA LINES SYSTEM DRIVER'S SEAT BACKREST ADJUSTMENT MOTOR DRIVER'S SEAT FORWARD/ BACKWARD ADJUSTMENT MOTOR DRIVER'S SEAT HEIGHT ADJUSTMENT MOTOR DRIVER'S SEAT MEMORY CONTROL UNIT DRIVER'S SEAT TILT ADJUSTMENT MOTOR FUSE FUSE HOLDER (GLOVE BOX) GENERAL MODULE CONTROL UNIT (BEHIND GLOVE BOX) GRN/VIO WIRE GRN/YEL WIRE GRY/BLK WIRE GRY/BRN WIRE HOT AT ALL TIMES ILLUM INSTRUMENT CLUSTER CONTROL MODULE LUMBAR SW + PROGRAM SWITCHES (3) RED/BLK WIRE RED/BRN WIRE SEAT BACKREST SEAT HEIGHT SEAT TILT SEAT FWD/BACK SEAT BACKREST) SEATS SYSTEM (LUMBAR CIRCUIT, IF EQUIPPED) SET SWITCH VIO/BLK WIRE VIO/BRN WIRE VIO/GRY WIRE VIO/RED WIRE WHT/RED/YEL WIRE YEL/BLK WIRE YEL/BRN WIRE

BLK WIRE BLK/VIO WIRE BLK/YEL WIRE BLU/BLK/YEL WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/RED WIRE BLU/WHT WIRE BRN WIRE COMPUTER DATA LINES SYSTEM DRIVER'S SEAT ADJUSTMENT SWITCH DRIVER'S SEAT BACKREST ADJUSTMENT MOTOR DRIVER'S SEAT BACKREST LOCK SWITCH DRIVER'S SEAT ENTRY FACILITY SWITCH (BACKREST) DRIVER'S SEAT FORWARD/ BACKWARD ADJUSTMENT MOTOR DRIVER'S SEAT HEADREST ADJUSTMENT MOTOR DRIVER'S SEAT HEIGHT ADJUSTMENT MOTOR DRIVER'S SEAT MEMORY CONTROL UNIT DRIVER'S SEAT TILT ADJUSTMENT MOTOR FUSE FUSE HOLDER (GLOVE BOX) GENERAL MODULE CONTROL UNIT (BEHIND GLOVE BOX) GRN/BLK WIRE GRN/BRN WIRE GRN/RED WIRE GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/WHT WIRE HOT AT ALL TIMES ILLUM INSTRUMENT CLUSTER CONTROL MODULE PASSENGER'S SEAT MEMORY CONTROL UNIT PROGRAM SWITCHES (3) RED/BLU WIRE RED/BRN WIRE RED/WHT WIRE RED/YEL WIRE SEAT ADJUSTMENT SW ENTRANCE AID ENTRANCE AID SEAT ADJUSTMENT SW SEAT ADJUSTMENT SW SEAT ADJUSTMENT SW SEAT ADJUSTMENT SW ENTRANCE AID SEAT TILT SEAT BACKREST SEAT HEADREST SEAT FWD/BACK TERM 30 SET SWITCH VIO/BRN WIRE VIO/GRY WIRE VIO/RED WIRE W/ ENTRANCE AID WHT WIRE WHT/GRN WIRE WHT/RED WIRE WHT/RED/YEL WIRE WHT/YEL WIRE YEL WIRE YEL/RED WIRE

5 47 (OTHERS) ABS/ASC UNIT OR ABS/DSC UNIT BEHIND BRAKE BOOSTER) BRN WIRE DRIVER'S DOOR POWER WINDOW MOTOR (CONVERTIBLE) DRIVER'S DRIVER'S BACKREST SEAT HEATING HEATING DRIVER'S LUMBAR SUPPORT SWITCH DRIVER'S SEAT ADJUSTMENT SWITCH DRIVER'S SEAT MEMORY CONTROL UNIT DRIVER'S SIDE FOOTWELL, RIGHT DRIVER'S SIDE OUTSIDE MIRROR WITH MEMORY DRIVER'S SIDE PRESSURE, SENSITIVE FINGER GUARD E-BOX PRECHARGE FAN PUMP EAC SENSOR ELECTRIC FAN EXCEPT CONVERTIBLE FRONT LEFT AUXILIARY FLASHER UNIT FRONT RIGHT TURN SIGNAL LAMP HEADLIGHT WASHER PUMP LUMBAR SUPPORT ONLY MIRROR ADJUSTMENT SWITCH MIRROR CONTROL UNIT, DRIVER'S SIDE NCA WIRE RIGHT FOG LIGHT RIGHT HIGH BEAM RIGHT HORN RIGHT LOW BEAM RIGHT PARKING LIGHT RIGHT REAR ENG COMPT, SECONDARY AIR INJECTION PUMP SECONDARY AIR INJECTION PUMP RELAY SEDAN, WAGON, 2004-2006 CONVERTIBLE COUPE W/ MEMORY SIDE MARKER LIGHT, LEFT SYSTEM LOCK, DRIVER'S DOOR VALVE BLOCK DRIVER'S LUMBAR SUPPORT W/ DSC W/ MEMORY W/ SEAT MEMORY W/ XENON HEADLIGHT W/O MEMORY W/O SEAT MEMORY W/O SMF MEMORY SEAT, DRIVER W/O XENON HEADLIGHT WASHER PUMP WIPER CHIME MOTOR MODULE WIPER RELAY XENON HEADLIGHT, RIGHT

1 2 3 ADJUST SW ADJUST SW ADJUST SW 1 2 3 DATA TERM 30 TERM 31 BLU/BLK WIRE BLU/GRN WIRE BLU/WHT WIRE BRN WIRE COMPUTER DATA LINES SYSTEM DRIVER'S SEAT MEMORY CONTROL UNIT DRIVER'S SIDE MEMORY MIRROR FOLDING MOTOR FUSE FUSE HOLDER (GLOVE BOX) GENERAL MODULE CONTROL UNIT HEATING ELEMENT HOT AT ALL TIMES INSTRUMENT CLUSTER CONTROL MODULE MIRROR ADJUSTMENT SWITCH PASSENGER'S SIDE MEMORY MIRROR POSITION MOTORS POSITION SENSORS RED/GRN/YEL WIRE SET SWITCH PROGRAM SWITCHES (3) WHT/RED/YEL WIRE

BACKREST LOCK SW BLK WIRE BLK/VIO WIRE BLK/YEL WIRE BLU/BLK/YEL WIRE BLU/GRN WIRE BLU/RED WIRE BLU/WHT WIRE BRN WIRE COMPUTER DATA LINES SYSTEM DRIVER'S SEAT MEMORY CONTROL UNIT FUSE FUSE HOLDER (GLOVE BOX) GENERAL MODULE CONTROL UNIT (BEHIND GLOVE BOX) GRN/BRN WIRE GRN/RED WIRE GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE GRY/BLK WIRE GRY/WHT WIRE HOT AT ALL TIMES INSTRUMENT CLUSTER CONTROL MODULE PASSENGER'S SEAT ADJUSTMENT SWITCH PASSENGER'S SEAT BACKREST ADJUSTMENT MOTOR PASSENGER'S SEAT BACKREST LOCK SWITCH PASSENGER'S SEAT ENTRY FACILITY SWITCH (BACKREST) PASSENGER'S SEAT FORWARD/ BACKWARD ADJUSTMENT MOTOR PASSENGER'S SEAT HEADREST ADJUSTMENT MOTOR PASSENGER'S SEAT HEIGHT ADJUSTMENT MOTOR PASSENGER'S SEAT TILT ADJUSTMENT MOTOR PASSENGER'S SEAT MEMORY CONTROL UNIT PROGRAM SWITCHES (3) RED/BLU WIRE RED/BRN WIRE RED/WHT WIRE SEAT ADJUSTMENT SW SEAT ADJUSTMENT SW ENTRANCE AID ENTRANCE AID SEAT ADJUSTMENT SW SEAT ADJUSTMENT SW SEAT ADJUSTMENT SW SEAT ADJUSTMENT SW ENTRANCE AID SEAT FWD/BACK SENS SEAT HEADREST SENS BACKREST LOCK SW BACKREST LOCK SIG SEAT HEADREST SENS SEAT TILT SEAT BACKREST SEAT HEADREST SEAT FWD/BACK TERM 30 SET SWITCH VIO/GRY WIRE VIO/RED WIRE W/ ENTRANCE AID WHT WIRE WHT/GRN WIRE WHT/RED WIRE WHT/RED/YEL WIRE WHT/YEL WIRE YEL WIRE YEL/RED WIRE

1 2 3 LUMBAR SW - ADJUSTMENT SWITCHES BLK/VIO WIRE BLK/YEL WIRE BLU/GRY WIRE BLU/RED WIRE BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DRIVER'S SEAT MEMORY CONTROL UNIT FUSE FUSE HOLDER (GLOVE BOX) GENERAL MODULE CONTROL UNIT (BEHIND GLOVE BOX) GRN/VIO WIRE GRN/YEL WIRE HOT AT ALL TIMES ILLUM INSTRUMENT CLUSTER CONTROL MODULE LUMBAR SW + PASSENGER'S SEAT BACKREST ADJUSTMENT MOTOR PASSENGER'S SEAT FORWARD/ BACKWARD ADJUSTMENT MOTOR PASSENGER'S SEAT HEIGHT ADJUSTMENT MOTOR PASSENGER'S SEAT MEMORY CONTROL UNIT PASSENGER'S SEAT TILT ADJUSTMENT MOTOR PROGRAM SWITCHES (3) RED/BRN WIRE SEAT FWD/BACK SEATS SYSTEM (LUMBAR CIRCUIT, IF EQUIPPED) SET SWITCH TERM 31 SEAT BACKREST VIO/GRY WIRE VIO/RED WIRE WHT/RED/YEL WIRE YEL/BLK WIRE YEL/BRN WIRE