BMW fault code 0051
Basic module III
In the basic module iii, code 0051 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.
GM: Relay for central-locking drives, rear, unlocking, does not pick up
Module versions: Basic module III (ZKE3_GM1), Basic module III (ZKE3_GM4), Basic module III (ZKE3_GM5)
In: 5 Series (E39) 1995–2003, 7 Series (E38) 1994–2001, X5 (E53) 1999–2006
GM: Relay for central-locking drives, rear, unlocking, does not pick up (sticking Signal MER after)
Module version: Basic module III (ZKE3_GM6)
In: X5 (E53) 1999–2006
Reading and clearing it
Fault code 0051 is a BMW code, stored in the car's basic module iii, 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 basic module iii is on: 7 Series (E38), 5 Series (E39), X5 (E53)
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