D357A5 är ett fel som lagrats i din BMW:s minne (en ISTA-felkod, inte en standard OBD-II P-kod).
Vad det betyder: Front brake-cooling air flap: invalid signal (status) — the DSC can't read the position of the electric actuator that opens/closes the active grille/brake-cooling shutters. Causes: failed/stuck actuator motor, damaged or corroded LIN wiring, or flaps physically jammed by ice/snow/debris.
