I prefer to manually turn my headlights on and off to save the battery in my
As far as I know, all Toyota and Lexus with automatic headlights do not have a headlights on warning beeper because the headlights turn themselves off when the doors are locked. For most people, it would be annoying to hear the tone when locking the door or using the timer function turns the headlights off.
Using the automatic headlight function in your car will not really affect the life of the car's battery unless the car is often parked for long periods of time.
You can set them to go off the moment the door is opened, instead of with a delay. The zero delay works with the switch set to Auto or to On. This is true on my 05 RX330.
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