Can I still drive with an auxiliary battery failure?
2 Answers
Vehicle auxiliary battery failure does not affect normal driving. Here are specific details about the auxiliary battery: 1. Causes of failure: Auxiliary battery fuse damage; Auxiliary battery damage; Generator or charging system failure; Related wiring harness failure, etc. 2. Function: The auxiliary battery powers various electrical devices when the engine is not running or operating at low speeds. When there are too many electrical devices and power consumption exceeds the generator's supply capacity, the battery assists the generator in supplying power to various electrical devices. It also plays a role in stabilizing voltage. The battery acts like a large capacitor, absorbing instantaneous overvoltage in the circuit to protect electrical devices.
When the auxiliary battery in the car has issues, can I still continue driving? Based on my over ten years of driving experience, usually you can. The auxiliary battery mainly powers the start-stop system or other small accessories, such as the air conditioning or audio system, while the main battery is the core for engine starting and operation. Even if the auxiliary battery fails, as long as the main battery has sufficient charge, the vehicle can still operate normally. However, this may cause some problems: the start-stop function might fail, making it difficult to restart the engine after it stops; or electrical devices like lights may flicker unstably, affecting nighttime driving safety. I recommend turning off unnecessary electrical devices, such as rear entertainment systems, to reduce the load on the main battery. It's best to check if any warning lights are illuminated on the dashboard and visit a professional repair shop as soon as possible. Don’t delay too long, otherwise the main battery may overwork and deplete, making it difficult to start the car. During regular maintenance, don’t forget to periodically test the voltage of both batteries.
