BMW fault code 0004
Seat memory, driver
In the seat memory, driver, code 0004 means different things depending on the version of the module in the car. Find your car below; the app shows the right one for yours.
SMF: Hall sensor, seat height: open circuit
Module versions: Seat memory, driver (FAS_63), Seat memory, driver (SM46_3), Seat memory, driver (SM46_4), Entrance aid, driver (SM46C_4), Seat memory, driver (SM46C_4M), Entrance aid, driver (SM46C_5), Seat memory, driver (SM46C_5M)
In: 3 Series (E46) 1998–2006, 6 Series (E63) 2003–2010, 6 Series (E64) 2004–2010, X3 (E83) 2003–2010, Z4 (E85) 2002–2008, Z4 (E86) 2006–2008, Z8 (E52) 2000–2003
SM/LSM: Hall sensor, seat height: open circuit
Module versions: Mirror/seat/backrest memory, 4-channel (SM53_4), Mirror/seat/backrest memory, 6-channel (SM53_6)
In: X3 (E83) 2003–2010, X5 (E53) 1999–2006, Z4 (E85) 2002–2008, Z4 (E86) 2006–2008
Hall sensor seat height, open circuit
Module version: Entrance aid, driver (EASY_E_F)
In: 3 Series (E46) 1998–2006, Z8 (E52) 2000–2003
Reading and clearing it
Fault code 0004 is a BMW code, stored in the car's seat memory, driver, not a generic OBD2 code (P0xxx): a generic OBD2 reader only reaches the engine's emissions faults, so it won't show it. AutoLingo for BMW reads it with BMW's own diagnostic protocols, in plain English, with the details the module stored about it, and clears it after a repair. If a fault comes right back after it's cleared, the problem is still there.
The seat memory, driver is on: 3 Series (E46), Z8 (E52), X5 (E53), 6 Series (E63), 6 Series (E64), X3 (E83), Z4 (E85), Z4 (E86)
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