How to Turn Off the Vehicle's Power Supply?

[StLeo]

Without pressing the brake pedal, press the one-touch start button once to turn off the engine. Under normal circumstances, after the driver exits the vehicle and closes the door, the sensor switch will automatically cut off the power. Some vehicle models have a manual control switch located on the interior ceiling; pressing it once will turn off the power.

[VanCamille]

I usually drive to and from work, and sometimes need to park or perform maintenance for extended periods. I first make sure the engine is completely turned off, then open the hood to locate the battery. Typically, I use a wrench to loosen the screw on the battery's negative terminal, gently pull the negative terminal away, and disconnect it from the battery post. This completely cuts off the power supply. Throughout the process, I wear insulated gloves to prevent static electricity and double-check that all lights and electrical devices in the car are turned off, such as the radio and dashcam. If the power isn't fully disconnected, the battery might drain, affecting the next startup. Remember, don’t touch the positive terminal first—there’s a risk of sparks. I’ve personally seen a friend accidentally short-circuit and burn out a fuse.