But it does lock the doors with the fob when you are inside the car? Or does the fob not work ever? What car? How old is the fob? Depending on the age of the car and the complexity of the key fob, you may be able to replace the battery yourself, or you may have to go to the dealer for reprogramming. https://www.consumerreports.org/car-maintenance/how-to-replace-your-car-key-fob/
Answers & Comments
But it does lock the doors with the fob when you are inside the car? Or does the fob not work ever?
What car? How old is the fob?
Depending on the age of the car and the complexity of the key fob, you may be able to replace the battery yourself, or you may have to go to the dealer for reprogramming.
https://www.consumerreports.org/car-maintenance/how-to-replace-your-car-key-fob/
https://www.wikihow.com/Replace-the-Battery-in-a-Key-Fob