Why do the taillights suddenly turn on when the car is locked?

[DeJeffrey]

It may be due to a malfunction in the car's brake light, causing the taillights to stay on. Here is some extended information about car taillights: 1. Rear fog light and reverse light distribution: The left side has a fog light, and the right side has a reverse light, meaning it's a single fog light and a single reverse light. Turn signals and brake lights are symmetrical, with one on each side. 2. Colors: Considering the wavelength penetration of light, there are generally three colors: yellow, red, and white. For better visibility, white lights are used, such as reverse lights and license plate-related lights. Turn signals use more noticeable yellow or red colors, while lights that need to be prominent or serve as warnings include brake lights, high-mounted brake lights, nighttime lights, and width indicator lights.