D357A5 on BMW:si muistiin tallennettu vika (ISTA-vikakoodi, ei vakiomuotoinen OBD-II P-koodi).
Mitä se tarkoittaa: 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.
