What are the solutions when the brake lights don't work?

[Espírito Santo]

Solutions for non-functioning brake lights: 1. Check the brake light bulb. If the bulb is faulty, simply replace it. 2. Inspect the brake light switch. If the switch malfunctions, all brake lights will fail to illuminate. During troubleshooting, connect the brake light switch with a wire; if the lights turn on, it indicates switch failure, and replacing the switch will resolve the issue. 3. Examine the fuse. Some vehicles don't have a dedicated brake light fuse but share one with other electrical devices. Use a multimeter to check other electrical components in the vehicle, identify non-functional devices, and replace the corresponding fuse. 4. Inspect the brake light ground wire. The tail lights in a vehicle share a common ground wire; if this wire is broken or has a poor connection, it can also cause the brake lights to fail. 5. Check the brake light wiring harness connector. Refer to the circuit diagram to locate the connector in the brake light wiring harness, and observe if the pins inside are loose or corroded. If so, repair the affected pins or use a "jumper wire" to fix the issue. 6. Verify if the brake light wiring harness has any breaks.