Have you ever experienced a moment when you press the button on your key fob, and it doesn’t function? It is aggravating, especially if you are in a rush or need to access your vehicle. A battery that has died in your key fob is an ordinary situation in which key fobs will lose power and stop functioning. There is no need to panic! Changing the battery in your key fob is straightforward, and with a few common tools and knowledge, you can do it yourself. 

In this article, we will walk through step-by-step logical solutions on how to change the battery in your key fob so you don’t have to get assistance or have your vehicle inoperable. Below is a rundown of what this article will be about, in case you need the key fob’s working status and ability to assist you to start the vehicle, or if your key is stuck in the ignition. 

Step 1: Identify the Type of Key Fob You Have

Before you start, it’s essential to know what type of key fob you’re dealing with. There are different types of key fobs, including traditional remote key fobs and smart key fobs. The process of replacing the battery may vary slightly depending on the model, so check your vehicle’s manual or the key fob’s design.

Certain key fobs feature a screw that holds the back cover in place, while others are snap-in. Knowing how it is constructed will assist you in knowing what approach to take to open up the fob.

Step 2: Gather the Necessary Tools

Have all the tools necessary to do the job available before you start. The following is what you will generally need for a replacement battery in a key fob:

• Small screwdriver (flathead or Phillips)
• A replacement battery (check the fob for the battery model, often CR2032 or CR2025)
• A plastic prying tool (optional, but useful for avoiding damage)

Step 3: Open the Key Fob Carefully

Now that you possess the appropriate tools, it is time to open the key fob. In case your fob has screws to keep it closed, use the tiny screwdriver to loosen them. Make sure to put the screws in a secure location where they won’t get misplaced. If there are no screws, use a plastic prying device to carefully push the two halves of the key fob apart. Work patiently and carefully so as not to crack the plastic.

Some key fobs have a little notch or groove where you can insert a flathead screwdriver or plastic tool between the two pieces. Go around the edges until the key fob opens up.

Step 4: Remove the Old Battery

Once the fob is open, you will see the old battery in place. You can use your fingers or a small tool to lift and pull out the old battery. Be mindful of how the battery is facing, as you will need to install the new one in the same position. In most cases, the positive side of the battery should face up, but double-check the markings on your fob.

Step 5: Insert the New Battery

Now it’s time to insert the new battery. Make sure the new battery matches the size and model of the old one. Common battery types used in key fobs are CR2032 and CR2025, but your key fob might require a different size. If you’re unsure, check the fob’s user manual or take the old battery to an electronics or automotive store to match it.

Insert the new battery into the fob in such a manner that it is securely fitted and oriented in the same direction as the previous battery. If the battery is not inserted properly, it could render your key fob dysfunctional.

Step 6: Reassemble the Key Fob

At this point, you can reconstruct the fob now that the new battery is in place. Just align the two sides of the fob and snap them together. If your fob has screws be sure to place them carefully as you assemble. Do not over-torque the screws as this will cause your fob to become damaged. Once the fob is assembled, be sure to test it to ensure everything is locking and unlocking appropriately

Step 7: Test the Key Fob Functionality

After having swapped the battery into the fob and assembling it back together, be sure to test the functionality of your fob. You should press the buttons and confirm that the fob is working correctly. You want to make sure the fob unlocks and locks the doors, opens the trunk, and starts the engine. If the key fob is still not working, double-check that the battery is properly seated. If it is still not functioning, it may be a problem with the fob itself, and you may need professional assistance

Step 8: Troubleshooting Common Problems

In other instances, you may still experience problems even after you replace the battery. An issue, for instance, may be created by a faulty key fob. If you have attempted everything and the key fob still fails to work, you may be required to reset the fob or reprogram it. Check your car manual for a guide on how to reprogram the key fob, or seek the services of a professional locksmith or dealership.

Conclusion

Replacing the battery in your key fob is an easy fix that can save your time and money. It only takes patience and the correct tools to do it, then you can restore the battery of your key fob and won’t have troubles such as the key stuck ignition. Please follow each process carefully and make sure you put the right type of battery to your fob.

A replacement key fob battery is a simple fix that can save you a lot of frustration. Monitoring the health of your key fob battery will have you ready to unlock your vehicle, turn on the engine, and drive at all times without any inconvenience.

At Carkez, we recognize how having a functioning key fob is paramount to maintaining your car in top operating condition. If you are experiencing a dead key fob or a key stuck in the ignition, don’t wait to contact us. We deal with key fob repairs, battery replacement, and more. Our professional technicians can assist you in getting back on ignition road quickly and effectively, with your key fob in top working order. Let us do the difficult part so that you can go back to the joy of your car!