
Abnormalities in the braking system manifest as poor braking performance, brake failure, unilateral brake pull, or braking noise. ABS function failure can cause the brake warning light to illuminate. Severely worn or failed brake pads can also trigger the brake warning light. Using brake fluid that does not meet specifications may cause the brake warning light to illuminate.

Last time when I was driving, the brake light didn't illuminate. Upon inspection, it's usually a burnt-out bulb – quite simple, just unscrew the taillight cover and replace it with a new bulb. If it still doesn't light up, it might be a blown fuse; locate the corresponding position in the fuse box and replace it. If the issue persists, check for loose or damaged wiring connections and whether the brake light switch is functioning properly. Sometimes a faulty relay can also cause the problem, so it's advisable to have it checked at a repair shop. This malfunction is significant because trailing vehicles can't see your braking, increasing the risk of rear-end collisions, so it should be addressed promptly. During regular maintenance, pay attention to bulb lifespan and wiring to avoid issues on long trips – safety comes first.

I've been driving for decades and encountered brake light failures several times, mostly due to bulb aging or circuit issues. Key troubleshooting steps: first replace the bulb, if that doesn't work, check the fuse and wire connections to avoid poor contact. The relay and brake switch are also crucial - if these fail, the brake lights won't illuminate when pressed. Additionally, improper vehicle modifications like installing LED lights may interfere with the circuit and require professional adjustment. Most importantly, pull over immediately when detected, turn on hazard lights for warning, and only investigate the issue after ensuring safety - never take it lightly.

If the brake light is not working, the bulb might be burnt out—try replacing it. Otherwise, it could be an electrical circuit issue, such as a blown fuse or aged wiring causing a short circuit. Common control component failures include worn brake switch contacts or a damaged relay. For DIY inspection: use a multimeter to check circuit continuity; if that's fine, consider voltage stability. Always disconnect the power before repairs to avoid electric shock. Regularly clean the lamp socket to prevent oxidation and extend its lifespan. Handle simple fixes yourself, but leave complex issues to a repair shop for peace of mind.


