My driver's door won't unlock all the time. Passenger door didn't unlock twice. I suspect it may be the vehicle battery, so I am changing it tomorrow. Small voltage irregularities can cause weird problems. Anyone else have this issue? And of course I hit 60k miles last month, so the warranty has expired.

 

Have you changed the key fob battery? My 2018 gave a ‘low key fob battery’ warning on the dash recently. CR2032 coin cell, easy enough to change.

Charging the vehicle battery is always a good idea.