1. Home
  2. Articles
  3. How Long Does a Key Fob Battery Last?

How Long Does a Key Fob Battery Last?

key fob battery

In order to get into a modern car, you will usually have to have the key fob that comes with the car. These key fobs can do everything from unlock the doors of the car to remote starting, in some cases. These fobs are powered by a small flat key fob battery. Just like any other battery, eventually the key fob battery will have to be replaced in order to keep the key fob functional. Every time that a driver wants to use their key fob, the battery will have to produce the electricity that is needed to power it. A key fob battery will usually last around three to four years before it will need to be replaced. Not having a fully functional key fob can lead to a lot of frustration and stress. In some cases, it will be impossible for a person to get into their car without a working key fob. When the time comes to get a new battery, you will have to take some time to research exactly what you need. By getting an idea of what is needed, you will be able to find the right battery in no time at all.

Usually, getting the battery out of a key fob can pose a bit of a problem for an inexperienced car owner. Some key fobs will snap apart, while others will have a screw that will need to be taken out. Attempting to do this on your own may cause you to damage the key fob, which will cost you even more money to fix. Many of the key fobs out there are quite expensive due to how high tech they are.

When your key fob battery is bad, here are some of the things that you will start to notice when your key fob battery is going bad:

  • The car will not unlock
  • It is taking a lot more effort to get the key fob to work
  • The buttons on the key fob will only work on occasion

By noticing the signs that your key fob is giving you, it will be easy to replace the battery and restore its functionality. Make sure that a high-quality replacement battery is replaced correctly or just have an experienced mechanic inspect and replace the key fob battery for you.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
Icon-warranty_badge-02

Skip the repair shop, our top-rated mechanics come to you.

At your home or office

Choose from 600+ repair, maintenance & diagnostic services. Our top-rated mechanics bring all parts & tools to your location.

Fair & transparent pricing

See labor & parts costs upfront, so you can book with confidence.

12-month, 12,000-mile warranty

Our services are backed by a 12-month, 12,000-mile warranty for your peace of mind.

Get A Quote

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE

More related articles

P0222 OBD-II Trouble Code: Throttle/Pedal Position Switch/Sensor B Circuit Low Input
P0222 code definition Throttle/Pedal Position Switch/Sensor B Circuit Low Input What the P0222...
Insurance Requirements for Car Registration in Kentucky
The Kentucky Transportation Cabinet requires that all drivers in Kentucky carry liability automotive insurance, or “financial responsibility” in order to operate a vehicle legally and maintain vehicle...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...

Related questions

Q: Car did not come with a key-less key fob... can it be installed?

Yes, you can buy a key fob from Amazon and program it to your car. The most difficult and costly part of this process is getting the key fob programmed to the car. The most common place to get this...

Q: Issues with the unlocking doors using a remote

Try to use another remote to see if the problem happens still with that remote. Sometimes the remote button sticks and only holding the button will allow the other buttons to work. If another remote is being used, make...

Q: my car trunk opens on its own when i turn off the car, only and only when i turn off the car every time, kia optima 2012

Try to take out the battery on your key FOB to see if the trunk still opens when you turn off the car? You may also want to check the key FOB for a stuck trunk button. If problem goes...