Key fobs have made our lives more convenient than ever before. No longer do we need to manually unlock and lock our cars, as we can simply press a button on the fob. Typically have a range of up to 50 feet, allowing you to unlock your car from a distance. However, with the convenience of key fobs comes the need to replace their batteries. In this article, we'll go over everything you need to know about replacing your key fob batteries.

Understanding Your Key Fob

Before we jump into how to replace the batteries in your key fob, it's important to understand the different types of key fobs that exist. Some key fobs have removable batteries, while others have rechargeable batteries. It's important to know which type of battery your key fob has before attempting to replace it.

Removable Battery Key Fobs

Removable battery key fobs are the most common type of key fob. These key fobs usually have a small compartment on the back that can be opened to reveal the battery. The battery can then be easily removed and replaced.

Rechargeable Battery Key Fobs

Rechargeable battery key fobs are less common than removable battery key fobs. These key fobs are designed to be recharged, rather than having their batteries replaced. If your key fob has a rechargeable battery, it's important to follow the manufacturer's instructions for recharging the battery.

Key Fob

Signs Your Key Fob Battery Needs Replacing

Over time, the battery in your key fob will begin to wear down, and you'll start to notice some signs that it needs replacing. These signs include:

  • The remote keyless entry system stops working
  • The lock and unlock buttons on your key fob become less responsive
  • The range of your key fob decreases

If you notice any of these signs, it's time to replace your key fob battery.

Tools You'll Need

Replacing your key fob battery is a quick and easy process that requires just a few tools. Here's what you'll need:

  • A new battery (make sure you get the right type for your key fob)
  • A small screwdriver (usually a Phillips head)
  • A flat surface to work on
  • A steady hand

Steps to Replace Your Key Fob Batteries

Now that you know the type of battery your key fob has, let's jump into the steps you need to follow to replace your key fob batteries.

Step 1: Get the Right Battery

The first step in replacing your key fob battery is to get the right battery. It's important to know the type of battery your key fob uses before purchasing a replacement. You can usually find this information in the owner's manual or by doing a quick Google search.

Step 2: Open Your Key Fob

Once you have the replacement battery, it's time to open your key fob. This can usually be done by using a small screwdriver to remove the back cover of the key fob.

Step 3: Remove the Old Battery

Once you have the key fob open, you can remove the old battery. Be sure to dispose of the old battery properly.

Step 4: Insert the New Battery

After you have removed the old battery, it's time to insert the new battery. Make sure that the new battery is inserted in the correct orientation.

Step 5: Close Your Key Fob

Once the new battery is inserted, it's time to close your key fob. Make sure that the back cover is securely fastened.

Step 6: Test Your Key Fob

After replacing your key fob battery, it's important to test your key fob to make sure that it's working properly.

Key Fob Replacement

Tips for Maintaining Your Key Fob Battery

Replacing your key fob battery is just one part of maintaining your key fob. Here are a few tips for maintaining your key fob battery:

Tip 1: Keep Your Key Fob Clean

Dirt and grime can build up on your key fob, which can affect the battery's performance. It's important to keep your key fob clean to ensure that it's working properly.

Tip 2: Use Your Key Fob Regularly

If you don't use your key fob regularly, the battery can drain faster. Make sure to use your key fob at least once a week to keep the battery charged.

Tip 3: Replace Your Key Fob Battery Regularly

Even if you follow the tips above, your key fob battery will eventually need to be replaced. It's a good idea to replace your key fob battery every 2-3 years, or as soon as you notice that it's not working as well as it used to.


Replacing your key fob battery is a simple task that can save you time and money in the long run. By following the steps above, you can replace your key fob battery in just a few minutes. Remember to keep your key fob clean, use it regularly, and replace the battery as needed to ensure that it's always working properly