How much does it cost to have the fop reprogramed?

Hi. If the fob battery is weak it will do this. Try to replace. If battery is new then the contacts behind the buttons might be loosing contact or not making contact. You will have to take apart to replace battery so look at spots where buttons push on circuit board. You can clean with q-tip and alcohol. My moms was the same way and I did all the above and works fine.