Q: Q: Battery dies overnight

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My battery drains after a few hours of sitting had tested for parasitic drain none found. Had to unplug both horns because they were blowing on their own

My car has 157 miles.
My car has an automatic transmission.

You state the battery does not have a parasitic drain on it but battery is dead in a few hours tells me the battery cannot hold a charge. Have the battery load tested to see if it is able to hold the specified load and still start the car. If not replace the battery and check charging system.

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