https://scientific-programs.sc....ience/wiki/8_Tips_Fo
How to Repair a Key Fob It could be time to take your car to an automotive service if you're unable to get the key fob to work. But before you make that decision, there are a few things you should check first. Dead batteries are the primary reason behind your key fob not functioning. Most key fobs are powered by conventional 3V button cells which are available in most stores. Dead Battery The battery in your key fob is responsible for the remote functions, which allow you to open or lock your car's trunk