The incorrect reverse lights may have reduced visibility, and not alert pedestrians and other drivers that the vehicle is backing up, increasing the risk of a crash.
The incorrect bumper reverse light assembly may have been installed. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 108, "Lamps, Reflective Devices, and Associated Equipment."
What to do: Book it in at your next service. There is no deadline and no charge.