What are the causes of brake light failure?
2 Answers
Brake light failure can be caused by: 1. Brake system failure due to severe oil shortage caused by worn brake fluid pipes; 2. Low oil level in the brake fluid reservoir leading to failure of the float-type sensor; 3. Severe wear of brake pads and breakage of pre-embedded wires; 4. Short circuit in the brake warning system and vapor generation in the brake fluid pipes. The brake system is a series of specialized devices that can forcibly reduce the speed of a vehicle. The brake system mainly consists of four parts: energy supply device, control device, transmission device, and brake. The main functions of the brake system are to decelerate or even stop a moving vehicle, maintain a stable speed for a vehicle going downhill, and keep a stationary vehicle from moving.
There are quite a few reasons for brake light failure. I've encountered it several times myself, and to summarize, the most common issue is a burnt-out bulb. Fuse blowouts also happen frequently, especially when a short circuit causes excessive current. Poor wiring connections, such as loose or corroded plugs, can lead to poor contact over time. If the brake switch fails, the light naturally won't come on when you press the brake. Additionally, faults in relays or control modules are more complex, especially in modern cars. Don't take brake light failure lightly—first, check the bulb and fuse yourself. Try replacing the bulb; the fuse box is easy to locate in the engine bay, and you can find the corresponding diagram in the manual. If you can't fix it yourself, seek professional help immediately, as this light is crucial for road safety. Others won't see your braking intention, increasing the risk of rear-end collisions, especially at night. Make it a habit to have a friend check if the lights are on every time you start the car.
