Remote Key Fob Repairs You Can Do at Home If your remote key fob stops functioning, you might be tempted to go to a dealership to get it changed. Try a few fixes at your home. Start by replacing the battery. Flat watch-style batteries are cheap and easily found at https://g2886793.targetblogs.com/31237225/10-things-everyone-has-to-say-about-car-key-fob-repair