Understanding VW key fob Battery replacement – volkswagen keyless entry battery in 2023
FOB stands for free on board which means not attached to the car. This is a small device that provides access to the car remotely usually this is a key with small buttons, that locks and unlock the car’s door.
this simply refers to the key less entry system, it includes short range radio transmitter which sends a distinct coded signal to a receiver unit in the car when a button on the fob is pushed. That in result unlocks or locks the doors.