If the brake light does not illuminate, other drivers may not know that the motorcycle is stopping, increasing the risk of a crash.

While being used in a special operating mode, the brake lights on these motorcycles may not illuminate when the brakes are applied. 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.