BMW fault code 007F

Telematic Control Unit (I bus)

TCU: Breakdown button, short circuit to positive

Module versions: Telematic Control Unit (I bus) (TELIBUS), Telematic Control Unit (I bus) (TELIBUS2), Telematic Control Unit (I bus) (TELIBUS3)

In: 3 Series (E46) 1998–2006, 5 Series (E39) 1998–2003, X3 (E83) 2003–2010, X5 (E53) 1999–2006, Z4 (E85) 2002–2008, Z4 (E86) 2006–2008, Z8 (E52) 2000–2003

Reading and clearing it

Fault code 007F is a BMW code, stored in the car's telematic control unit (i bus), 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 telematic control unit (i bus) is on: 7 Series (E38), 5 Series (E39), 3 Series (E46), Z8 (E52), X5 (E53), X3 (E83), Z4 (E85), Z4 (E86)

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