Your key fob battery won’t last forever. Here are the warning signs to watch for before it dies completely.
5 Signs Your Key Fob Battery is Dying
1. Reduced Range
If you used to unlock your car from 50 feet away but now need to be within 10 feet, your battery is weakening.
2. Inconsistent Response
Buttons that work sometimes but not others indicate a low battery struggling to send a strong signal.
3. Multiple Button Presses Required
Having to press the unlock button 2-3 times before your car responds is a classic sign.
4. Dashboard Warning Light
Many newer vehicles display a “key fob battery low” warning on the dashboard.
5. Delayed Response
If there’s a noticeable lag between pressing the button and your car responding, the battery is likely low.
How Long Do Key Fob Batteries Last?
Most key fob batteries last 2-4 years depending on:
- How often you use your fob
- Extreme temperatures (hot or cold)
- Proximity to electronic devices
Pro Tip
Replace your battery as soon as you notice any of these signs. A dead key fob at the wrong time can ruin your day!
Most key fobs use inexpensive CR2032 batteries that cost $6-12 for a 2-pack and take under 5 minutes to replace.