Key Fob Not Working? Battery Replacement vs. Reprogramming
Troubleshoot your key fob issues: is it a dead battery or does it need reprogramming?
Your key fob stopped working. Before you panic, let's troubleshoot whether it's a simple battery issue or something more.
Signs It’s a Dead Battery - Range has been decreasing gradually - Buttons feel responsive but nothing happens - The physical key still starts the car - The fob is more than 2-3 years old
Signs It Needs Reprogramming - The fob stopped working suddenly after a battery change - Multiple button presses are needed to get a response - The car doesn't recognize the fob at all - You recently had car battery work done
DIY Battery Replacement Most key fobs use CR2025 or CR2032 batteries. Open the fob case carefully, note the battery orientation, swap the battery, and test. Cost: $3-$8.
When to Call a Locksmith If a new battery doesn’t fix it, the fob likely needs reprogramming. This requires professional diagnostic equipment. A locksmith can reprogram most key fobs on-site for $50-$150 — far less than a dealership visit.
Prevention Tips - Replace the battery every 2-3 years proactively - Keep a spare fob programmed as backup - Avoid exposing the fob to extreme temperatures - Don't leave it near electronic devices that could interfere
Mobile Locksmith Columbus handles key fob programming for all major vehicle brands. Call (380) 777-8858 for mobile service anywhere in Columbus, OH.