Improperly illuminated road signs may be difficult for the driver to read, increasing the risk of a crash.

The headlights may not have received a metal coating application, which can result in the low beams not adequately illuminating road signs. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 108, "Lamps, Reflective Devices, and Associated Devices."

What to do: Book it in at your next service. There is no deadline and no charge.