When a key fob stops responding, the cause is often simple. Before you pay for a replacement, run through this quick checklist.
1. Replace the battery
A weak coin cell battery is the most common reason a fob stops working. Many fobs open with a small slot on the side, and the battery type is printed on the cell itself. A fob that works only when you are close to the car often has a weak battery.
2. Try your spare fob
If the spare works, the problem is with the first fob, not the car. If neither works, the issue may be on the vehicle side.
3. Check for physical damage or water
Cracked cases, worn buttons, or moisture can break the electronics inside. A fob that was dropped or washed may need professional repair or replacement.
4. Look for interference
Strong radio signals near some parking areas can temporarily block a fob. Try it in a different location.
5. Check your vehicle battery
A low vehicle battery can cause electronic features, including remote entry and push-to-start recognition, to act up.
6. Know when the fob needs reprogramming
After a battery change, some fobs lose sync, and a replacement fob always has to be programmed to the vehicle. This is where an automotive locksmith helps. See our key fob programming in Huntsville and push-to-start key replacement pages for details.
Frequently asked questions
Can a locksmith program a fob I bought online?
Often yes, if it is compatible with your vehicle, but quality varies. Ask the locksmith before you buy.
How do I know if it is the fob or the car?
Test the spare, change the battery, and check the vehicle battery. If all three check out and the fob still does nothing, call for diagnosis at (256) 801-3117.