I would bet with about 90% confidence that you need to replace your car battery. How old is your battery?

Here is my theory. Old car batteries cause all kinds of weird problems like these. When you start the car, the battery is a little weak from sitting overnight. Then, after the car warms up and the alternator recharges things, life returns to normal. Are you having any other odd symptoms, like your turn signals not flashing correctly?

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