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2015 Toyota Avalon _ headlights and starting

Does it do any good to turn the headlights on for a few seconds (then off) before trying to start the car in subzero weather?

It still can but I’d just try and start the engine without it.

My question is why?

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No…unless you want to use up more power from the battery before you start it? :face_with_raised_eyebrow::thinking:

Yes.

Anybody who lives in a cold climate, knows this as being a fact.

Tester

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Yup. A battery is a chemical device. Getting that chemical reaction started warms it slightly and helps start the car.

If your vehicle has remote entry ( that usually flashes the turn lights ) then opening the door also turns on interior lights and putting the key in might turn on dash lights seems to make physically turning on head lights unnecessary .