Does Delayed Headlight Shutoff Harm the Battery?

[MollyFitz]

No, it doesn't. The delayed headlight shutoff feature was designed with battery impact in mind from the very beginning, much like the auto start-stop function. More details are as follows: Principle: In some car models, even if you don't turn off the headlights after shutting off the engine, they will automatically turn off after a delay when you remove the key—Toyota is one example. Some vehicles come with a "follow-me-home" feature: after turning off the engine, simply flick the light control switch, such as flashing the high beams once, to activate it. The headlights will then illuminate to light your way home and automatically turn off after a preset time. This doesn't count as forgetting to turn off the headlights and won't affect the battery. Purpose: In most car models, the light control switch isn't connected to the ignition. Even after removing the key, various lights can still be turned on as usual, and the horn remains powered in all models. This is actually a self-rescue measure for passengers locked inside the car, allowing them to send out audible and visual alerts to seek help from outside.