In most cases, replacing the battery in your key fob does not require reprogramming. The battery in a key fob is typically responsible for powering the remote functions, such as unlocking and locking doors or triggering the alarm. It doesn't usually affect the programming that connects the key fob to your vehicle's onboard computer.
If you do find that your key fob is not working correctly after replacing the battery, first check your vehicle's battery. If your vehicle battery is low, it might affect the functions on the key fob. Another issue could be that your key fob might have gone bad and will need to be replaced. If you are located in Oahu, Hawaii, give The Key Fob And Remote Shop a call to see if we can make a new key fob for your year, make, and model.