Will Turning Off the Engine with Headlights On Cause Any Damage?

1 Answers
McJune
07/29/25 7:11pm
Turning off the engine with the headlights on will have an impact. When the car is turned off, forgetting to turn off the headlights will drain the battery. Leaving the headlights on for an extended period can cause severe battery depletion, making it impossible to start the engine. In such cases, a jump-start will be required. Of course, this situation also shortens the battery's lifespan. If you frequently forget to turn off the headlights, the battery may fail in less than half a year. Therefore, always ensure the headlights are turned off when shutting down the engine. Steps for jump-starting the generator: First, ensure the auxiliary battery is 12V and its negative terminal is properly grounded. Also, turn off all unnecessary lights and accessories to prevent electrical accidents. Next, connect the jumper cables. Do not reverse the positive and negative terminals, as this may cause sparks when connected. Ensure the cables are tightly secured to the battery terminals (for full contact) to avoid sparking during the process. Start the engine of the vehicle with the auxiliary battery and let it run at medium speed. Then, start the engine of the vehicle with the depleted battery. Finally, disconnect the cables in the exact reverse order.
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