Why are the taillights of BYD cars always on?

1 Answers
ColemanMarie
07/30/25 2:04am
If the taillights of a BYD car remain constantly lit, the possible causes include a non-returning brake pad spring, a drop in the fluid level in the brake fluid reservoir, a fault in the taillight circuit, a damaged brake light switch, or an un-released handbrake. If you notice that only one side of the taillight is illuminated, there is no need to panic as this is the vehicle's parking light function. Additional Information: 1. Parking Light Function: The parking light function is designed to alert passing vehicles at night. Typically, this hidden feature can be activated after parking and turning off the engine by switching the turn signal to the side where the light is needed. If the turn signal lever is accidentally bumped after turning off the engine, this function may be unintentionally activated. 2. Explanation of Car Taillights: Car taillights include turn signals, brake lights, position lights, rear fog lights, reverse lights, and parking lights. Turn signals and brake lights are symmetrical, with one on each side. Considering the wavelength penetration of light, they generally come in three colors: yellow, red, and white. If better illumination is required, white lights are used, such as for reverse lights and license plate information lights. Turn signals use more conspicuous yellow or red colors, serving as a clear and warning signal.
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