Every keyless vehicle I’ve driven has had a failsafe, usually something along the lines of starting the car by pushing the start button with the top of the FOB and it’ll temporarily be powered enough to read whatever security codes it needs
Some brands have a hidden manual key inside the FOB that you could use
Great until the fob dies. Then your car turns into an art piece.
Every keyless vehicle I’ve driven has had a failsafe, usually something along the lines of starting the car by pushing the start button with the top of the FOB and it’ll temporarily be powered enough to read whatever security codes it needs
Some brands have a hidden manual key inside the FOB that you could use
My car has a spot to put the fob if the fob is dead, and it’ll just read the dead fob and be fine.