Is your Honda key fob displaying a low battery warning on your dashboard? Don’t panic! Changing your Honda key fob battery is a straightforward task you can easily handle yourself. As a car repair expert at keyfobx.com, I’m here to guide you through each step, ensuring a smooth and successful battery replacement. This guide will provide you with clear instructions and helpful tips to keep your key fob working perfectly.
You might have noticed a message on your Honda’s dashboard indicating a low key fob battery. While your key fob might still be functioning, it’s wise to replace the battery promptly to avoid any inconvenience. Ignoring this warning could leave you stranded when your key fob completely loses power. I experienced this warning myself after a couple of years of using my Honda key fob, and decided to take action before it became a problem.
For a short period, I used my spare key fob as a temporary solution. However, I knew it was essential to replace the battery in my primary fob. Consulting the owner’s manual is always a good starting point.
While the owner’s manual provides basic instructions, I wanted a more detailed understanding before disassembling my expensive key fob. Online searches led me to general YouTube videos demonstrating Honda key fob battery replacement. These videos were helpful, but I felt that sharing my own photo-documented experience would be even more beneficial. This guide aims to offer a clearer and more confident approach to changing your Honda key fob battery.
What You’ll Need to Change Your Honda Key Fob Battery
Before you begin, gather these simple tools and supplies:
- New CR2032 Battery: This is the standard battery type for most Honda key fobs. Consider buying a multipack, especially if you have multiple Honda vehicles or want to have spare batteries on hand. CR2032 batteries have a long shelf life.
- Small Flathead Screwdriver: This will be used to gently pry out the old battery. A very small screwdriver from an eyeglass repair kit works perfectly.
Step-by-Step Guide to Changing Your Honda Key Fob Battery
Let’s walk through the battery replacement process step-by-step:
Step 1: Remove the Emergency Key
The first step is to remove the mechanical emergency key from your Honda key fob. Locate the small release switch on the fob – it’s usually a small button or slider. Slide or press this switch to release the emergency key, then pull the key out of the fob.
Quick Tip: The emergency key isn’t just for dead 12V car batteries! It can also open your trunk using the lock located behind the driver’s side rear passenger headrest. This is especially useful if your car battery is dead and your jump starter is in the trunk.
Step 2: Open the Key Fob Casing
With the emergency key removed, the next step is to split the key fob casing. The owner’s manual suggests using a coin and wrapping it in cloth to avoid scratches. However, there’s an even easier method.
Instead of a coin, use the emergency key itself! Look at the tabs exposed after removing the emergency key. As highlighted in the photo, these tabs are designed to perfectly accommodate the emergency key. Insert the tip of the emergency key into the slot between these tabs. Gently twist or pry to separate the two halves of the key fob casing. It shouldn’t require excessive force. If you’re still concerned about using the key, you can use a coin wrapped in a soft cloth, but the emergency key method is very convenient and effective.
Step 3: Remove the Old Battery
Once the casing is open, you’ll see the CR2032 battery. The owner’s manual advises caution to “avoid losing the buttons.” This refers to the circuit board inside, which is not firmly secured and can lift when you try to pry out the battery. The buttons are attached to this circuit board, so if it lifts too much, you risk dislodging them.
To prevent this, lay the key fob flat on a table while removing the battery. Hold the fob firmly against the table with one hand. With your other hand, use the small flathead screwdriver to gently pry the battery out.
As shown in the photo, yellow arrows indicate tabs holding the battery. The green arrow points to the ideal spot to insert your screwdriver – under the battery edge. Work slowly and carefully to pop the battery out.
Step 4: Insert the New Battery
Take your new CR2032 battery and insert it into the battery compartment. First, slide one edge of the battery under the two tabs highlighted by the yellow arrows in the previous image. Then, press down on the other side of the battery. It should easily snap into place, secured by the smaller tabs on the opposite side. Ensure the positive (+) side of the battery is facing upwards, as indicated in the battery compartment.
Step 5: Close the Key Fob Casing
Reassembling the key fob casing requires a bit more pressure than you might expect. Make sure the two halves are perfectly aligned before pressing them together. If they don’t snap easily, double-check the alignment. To make this easier, try squeezing the end of the fob opposite to where the emergency key inserts first. Once that end is secure, squeeze the key end to snap the casing completely closed. This two-step approach can make closing the fob much smoother.
Tips for a Smooth Honda Key Fob Battery Change
- Work on a clean, flat surface: This prevents losing any small parts and provides stability.
- Use the right tools: A small flathead screwdriver is ideal. Avoid using anything too large or sharp that could damage the fob.
- Be gentle: Don’t force anything. If you encounter resistance, re-examine the steps and ensure proper alignment.
- Consider a protective cover: To prevent future scratches, like those visible on my old fob, consider purchasing a silicone cover for your key fob. They are inexpensive and offer good protection.
Conclusion
Changing your Honda key fob battery is a simple and cost-effective DIY task. By following these steps, you can confidently replace your battery and avoid unnecessary trips to the dealership. Keep your key fob functioning optimally and enjoy the peace of mind knowing you can handle this maintenance yourself. For more car maintenance tips and guides, visit keyfobx.com.
