Hello, I'm Danny.
To answer your question not necessarily. If you physically turn the lights on then yes the taillights will be on. If a car is equipped with DRL's - daytime running lights then just the headlights will be on. Daytime running lights will be on all the time meaning whenever the car is on and driving. Hope this helps and thanks for using 2CarPros.
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Wednesday, June 2nd, 2021 AT 1:39 PM