BMW fault code 0070
Automatic Interval Control
RLS: Optical initialization (error and light error)
Module version: Rain/driving lights sensor (RLS_DS2)
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
Reading and clearing it
Fault code 0070 is a BMW code, stored in the car's automatic interval control, 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 automatic interval control is on: 7 Series (E38), 5 Series (E39), 3 Series (E46), X5 (E53), X3 (E83), Z4 (E85), Z4 (E86)
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