From the recall notice: "While Boombox can enhance the conspicuity of the vehicle to pedestrians, a vehicle that uses Boombox […] may cause the PWS [Pedestrian

From the recall notice: "While Boombox can enhance the conspicuity of the vehicle to pedestrians, a vehicle that uses Boombox […] may cause the PWS [Pedestrian warning system] to be noncompliant with FMVSS 141, which could increase the risk of a collision." "[S]ounds emitted using Boombox could be construed to obscure or prevent the PWS from complying […]."