Is your car key fob not working as reliably as it used to? Before you rush to the dealership or call a locksmith, the solution might be simpler than you think – a battery replacement! Changing the battery in your key fob is a straightforward task that most car owners can easily do themselves with just a few common tools. This guide will walk you through the steps on how to open your key fob and replace the battery, saving you time and money.
What You’ll Need
Before you begin, gather these simple tools:
- A small flathead screwdriver: Jeweler’s screwdrivers or eyeglass repair kits often include the perfect size.
- A new battery: Key fobs typically use coin cell batteries. Check your owner’s manual or the old battery itself to identify the correct type (CR2032, CR2025, or CR1632 are common).
- Your key fob: The patient in our little DIY project!
Step-by-Step Guide to Opening Your Key Fob and Replacing the Battery
Let’s get started with the battery replacement process. Follow these steps carefully:
Step 1: Remove the Emergency Key
Many key fobs contain a physical, or “emergency,” key that slides out. This is usually a small, metal key that can be used to manually unlock your car door if the fob battery is completely dead. Locate the release button or latch on your key fob. It’s often a small silver or gray piece, distinct from the main body of the fob. Press and hold this release while gently pulling out the emergency key. Some key fobs may not have a removable key, in which case you can skip this step.
Step 2: Pry Open the Key Fob
With the emergency key removed (if applicable), you’ll now see a small notch or seam along the edge of your key fob. This is where you’ll insert your small flathead screwdriver to gently pry the fob open.
Carefully insert the tip of your screwdriver into the notch. Apply gentle pressure and twist the screwdriver to separate the two halves of the key fob. Work your way around the seam, gently prying at different points until the fob begins to split open. Be patient and avoid using excessive force, as you don’t want to damage the plastic casing. It might be a bit tight the first time you open it.
Step 3: Replace the Battery
Once the key fob is open, you’ll see the battery. Pay close attention to the orientation of the old battery before you remove it. Notice which side is facing up (usually the positive side, marked with a “+” symbol).
Gently pry out the old battery. You can use your fingernail or the tip of the screwdriver to help lift it out. Insert the new battery, making sure the positive (+) side is facing the same direction as the old battery was.
Step 4: Reassemble the Key Fob
Now it’s time to put your key fob back together. Align the two halves of the fob and press them firmly together until they snap closed. You should hear a click, indicating that the fob is securely reassembled.
Finally, test your key fob by pressing the lock and unlock buttons to ensure it’s working correctly. If it works, congratulations! You’ve successfully replaced your key fob battery. Don’t forget to slide the emergency key back into the fob if you removed it earlier.
Conclusion
Replacing your key fob battery is a simple DIY task that can save you a trip to the mechanic and the cost of a service appointment. By following these easy steps on how to open your key fob and replace the battery, you can keep your car remote working reliably. If you encounter any difficulties or prefer professional assistance, remember that automotive service centers are always available to help.
