If the battery in the key fob goes bad, will you have trouble starting the car? I am having issues starting the car after it has sat for a couple weeks. The battery on the car is great. The engine turns and turns but it won't start. Once it starts the car runs great and will start up every time. Just wondering if maybe my battery in the fob is the problem. I owned the car 14 years and I don't I ever replaced it.