Check for debris, ice, or stones lodged in the flaps that might prevent them from moving. If the flaps are physically broken or the plastic linkage is snapped, the entire assembly may need replacement.
Leave a comment with your VIN or engine type (N47, B47, M57, N57), and we’ll confirm the exact part number.
The system usually has two motors: an for the kidney grills and a lower actuator for the bumper flaps.