Q: car sat for 14 days and now won't start even after turning it off after jumping it.

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Car sat for 14 days. Will jump it and let it run but if it sits for 4 or more hours without running, it won't start again.
My car has an automatic transmission.

From what you’ve described, it sounds like your battery is not capable to hold a charge anymore for long periods of time. I suggest having the battery and charging system checked. Have a certified technician, like one from YourMechanic, diagnose the battery firsthand and help you fix it accordingly.

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