Why has one of the car lights turned red?

[AllisonDella]

A red car light may indicate a burnt-out bulb or a loose grounding point. Here is some relevant information about car lights: 1. Headlights: Combined headlights are located at the front of the car and primarily serve lighting and signaling purposes. The light emitted by headlights illuminates the road ahead, enabling safe driving at night. Combined headlights can be categorized by light source into halogen tungsten lamps and xenon lamps. 2. Combined taillights: Combined taillights are located at the rear of the car and mainly serve lighting and signaling purposes. Rear lights generally consist of rear position lights, reverse lights, brake lights, rear fog lights, rear turn signals, and retroreflectors.