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What Exactly Causes Car Lights Not to Work?

1 Answers

SanSteven

07/30/25 12:35am

There are many reasons that can cause car lights not to work, such as burnt-out bulbs, overheated wires, faulty relays or combination switches, blown fuses, poor circuit connections, etc. When encountering the specific situation of car lights not working, pay attention to whether it's one light not working or both. If both lights are not working, there is a high probability of a circuit issue or a problem with the relay switch. If only one car light is not working while the other is functioning, it is likely due to a damaged bulb or poor connection in the bulb's circuit. Car circuits are very complex, so when a fault occurs, it's best to visit an auto repair shop and have a technician use a multimeter to test and identify the exact part causing the issue.

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