Why do all the car lights suddenly turn on?
2 Answers
Car alarm lights all turn on due to system power shortage. Pay attention to check the battery power. The reasons for all car alarm lights turning on are as follows: 1. During vehicle self-inspection: The indicator light will illuminate during vehicle self-inspection and automatically turn off after starting the car. If the indicator light remains on after starting the car, it is reminding that there is a problem with the battery, and it should be inspected or replaced. 2. Low fuel warning: The fuel indicator light signals insufficient fuel. When this light turns on, it means the fuel is about to run out. Generally, from the time this light turns on until the fuel is completely exhausted, the vehicle can still drive about 50 kilometers.
As an auto repair enthusiast, I've found that sudden illumination of all car lights usually has several causes. The most common is a short circuit issue, such as aging wires rubbing together and causing positive/negative contact; a faulty body control module may also send incorrect signals turning all lights on; or the key fob getting stuck in the start position, or the anti-theft system being falsely triggered. When I've helped inspect such vehicles, I've found that damaged relays or loose battery connections can also cause all lights to illuminate. Immediately turn off and lock the vehicle, check if keys and remotes are functioning properly; it's best to visit a professional shop for diagnosis - don't delay too long as it could drain the battery and affect daily driving safety.
