On certain vehicles, a software problem could cause the external sound generator to not work properly. Under certain conditions, the vehicle may not produce enough sound to be detected by a pedestrian or cyclist. New Canadian regulations require electric vehicles to make a minimum sound level when operating at low speeds.
An external sound generator that doesn't work could create an increased risk of injury for pedestrians and cyclists.
BMW will notify owners by mail and instruct you to take your vehicle to a dealership to update the external artificial sound generator software.