Hello,
When you lock the vehicle everything must be off after a minutes.
When you have your battery drained overnight then you have a problem.
does the car lock with a fob key?
check that the button at the bottom where the fob goes into is popping back up, it could be sticking, this button tells the car there is a key in the slot, if it's sticking after you remove the key, then the car still thinks there is a key there.
if it's okay remove battery negative cable wait for a 15 minutes to reset the system then reinstall, and check if the problem solved.
if not check our link below how to perform battery drain test.
https://www.2carpros.com/articles/car-battery-dead-overnight
Perform the test then let us know what happens with you.
thank you.
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Friday, January 29th, 2021 AT 5:36 AM