Don’t laugh.
We rented an Excursion for a weekend as both of ours were over 20 yrs old each. Neither of ours have remote door unlocking mechanisms, nor half the other gadgets on the newest cars. We even rented one that was sever years old so we could figure out how to turn the damned thing off.
The battery went out on the keyring and we we bumbling around trying to figure out how to get into the car. We were trying to call the rentacar agency or AAA for assistance for 30 minutes when my wife remembered the doors still had a keyhole in them.
Recently had a customer come back in the store to 'wait' for help to arrive. It seems her electronic key to her car had died. It not only unlocked the door....but the ignition switch too!!! If the ignition didn't receive the electronic signal...the car wouldn't start.