What Causes a BYD Vehicle to Lose All Power?
2 Answers
The reasons for a BYD vehicle losing all power are as follows: 1. Battery failure: When starting the engine, the battery supplies a strong current to the engine, enabling the starter to operate and initiate the engine's first working cycle, while also providing power to the ignition system and fuel pump to keep the engine running. 2. Alternator failure: Once the engine is running, it drives the alternator, which not only supplies power to the entire vehicle but also charges the battery. A properly functioning alternator can fully perform its role when the engine is running normally. However, if the alternator fails, it cannot supply power to the vehicle's electrical components normally, nor can it charge the battery. Emergency solutions: 1. Push-starting: Push-starting is a very effective emergency starting method, but it is a last resort and should not be used frequently. This method can cause some damage to the engine and clutch, and should especially be avoided for automatic transmission vehicles. 2. Prepare jumper cables: To avoid being unable to charge the battery when it runs out of power, car owners should keep a set of jumper cables in the vehicle, which can be purchased at most auto parts stores. However, when connecting the jumper cables, it is crucial not to mix up the connection order.
I've helped friends deal with BYD vehicles losing all power several times, and it's usually a power system issue. The most likely causes are a completely drained or damaged battery – like leaving headlights or onboard devices on leading to discharge, especially worse in cold weather. It could also be an alternator failure, where the battery drains quickly after being charged. Blown fuses are another major culprit, particularly if the main power fuse burns out cutting the current. Loose, corroded, or short-circuited connections in the wiring can also cause sudden power loss.
Quick fixes: First check battery voltage – normal is above 12V, below 10V means replacement is needed. Try jump-starting from another vehicle. If systems work normally after starting, it's probably fine. But if it won't start or quickly loses power again, immediately visit a professional repair shop for full alternator and wiring checks.
My regular advice: Develop good habits – confirm all electronics are off after shutting down the engine, and periodically charge the battery to extend its lifespan. This can save you a lot of repair headaches.
