When the battery in your Honda key fob dies, it can be frustrating and inconvenient. You won’t be able to unlock your car, start it, or use the remote features. Fortunately, changing the battery is a relatively simple process that you can do yourself in just a few minutes. In this article, we’ll guide you through the steps on how to change the battery on a Honda key fob. We’ll also provide some tips on how to extend the life of your key fob battery.
To change the battery in your Honda key fob, you will need a new CR2032 coin battery. You can purchase these batteries at most hardware stores or online. Once you have the new battery, follow these steps:
1. Locate the small release button on the back of the key fob. Usually, there’s a small notch or a button that you have to push.
2. Press the release button and pull the two halves of the key fob apart.
3. Remove the old battery from the key fob.
4. Insert the new battery into the key fob, making sure that the positive (+) side of the battery is facing up.
5. Snap the two halves of the key fob back together.
Once you have changed the battery, test the key fob to make sure it is working properly. If the key fob is not working, try replacing the battery again. If that does not work, there may be a problem with the key fob itself. In this case, you will need to take the key fob to a Honda dealership or a qualified locksmith to have it repaired or replaced.
Identifying the Battery Type
Identifying the correct battery for your Honda key fob is crucial to ensure its proper functioning. Modern Honda key fobs typically utilize coin-shaped batteries, which come in various sizes and types. While the exact battery type may differ depending on the specific Honda model and year, they generally fall into two common categories:
CR Series Batteries
CR series batteries are widely used in Honda key fobs. These lithium-ion batteries are known for their high energy density and long shelf life. Some common CR batteries used in Honda key fobs include CR2025, CR2032, and CR1632.
| Battery Type | Dimensions (mm) | Voltage (V) |
|---|---|---|
| CR2025 | 20.0 x 2.5 | 3.0 |
| CR2032 | 20.0 x 3.2 | 3.0 |
| CR1632 | 16.0 x 3.2 | 3.0 |
Gathering the Necessary Tools
To change the battery on your Honda key fob, you’ll need a few basic tools: a small Phillips-head screwdriver, a new CR2032 battery, and a clean cloth. If you don’t have a Phillips-head screwdriver, you can usually find one at your local hardware store or home improvement center.
Choosing the Right Battery
Most Honda key fobs use a CR2032 battery. However, some older models may use a CR2025 battery. To be sure, check your owner’s manual or look at the battery itself. The battery type will be printed on the side of the battery.
CR2032 vs CR2025: A Closer Look
CR2032 and CR2025 batteries are both small, lithium-ion batteries that are commonly used in key fobs and other small electronic devices. However, there are some key differences between the two batteries:
| CR2032 | CR2025 | |
|---|---|---|
| Diameter | 20.32 mm | 20.25 mm |
| Height | 3.2 mm | 2.5 mm |
| Capacity | 225 mAh | 165 mAh |
As you can see, the CR2032 battery is slightly larger and has a higher capacity than the CR2025 battery. This means that the CR2032 battery will last longer in your key fob than the CR2025 battery.
Locating the Battery Compartment
Depending on the model and year of your Honda, the battery compartment for the key fob can be found in a few different locations. Here are the most common:
1. Inside the key fob shell: For many Honda key fobs, the battery compartment is located within the plastic shell of the fob itself. To access it, you will need to pry the shell open using a thin, flat object, such as a screwdriver or a butter knife. Be careful not to damage the shell or the circuit board inside.
2. In a separate module attached to the key: On some Honda models, the battery compartment for the key fob is located in a separate module that is attached to the key ring. To access the battery, you will need to detach the module from the key ring by pressing the small release button on the side. The battery compartment is usually located on the bottom of the module.
3. In the driver’s door handle: Honda has also introduced a keyless entry system that stores the battery inside the driver’s door handle. To access the battery, you will need to:
| Step 1: | Push the small release button located at the bottom of the door handle. |
|---|---|
| Step 2: | Pull out the key fob from the top of the door handle. |
| Step 3: | Locate the battery compartment on the back of the key fob. |
Removing the Old Battery
1. Locate the small button on the back of your key fob. Press this button to release the key.
2. Pull the key out of the fob, then flip the fob over to reveal the back panel.
3. On some Honda key fobs, there will be a small tab or notch along the edge of the back panel. Use a small flathead screwdriver or a key to gently pry open the back panel from this notch.
4. Carefully slide open the back panel. **Here are some detailed instructions for different types of Honda key fobs:**
| Key Fob Type | Instructions |
|---|---|
| Flip-key fob | Slide the back panel down to release it from the front panel. |
| Blade-style key fob | Use a small screwdriver to pry open the back panel from the top or bottom edge. |
| Smart key fob | Slide the small tab or button on the back panel to release it from the front panel. |
5. Once the back panel is open, locate the old battery, which will be a small, round, silver-colored disc. Use tweezers or your fingers to gently remove the battery.
Inserting the New Battery
Now that you have the new battery, it’s time to insert it into the key fob. Make sure the positive (+) side of the battery faces up, towards the top of the fob. Gently push the battery down until it clicks into place. Be careful not to force it, as this could damage the battery or the fob.
Once the battery is in place, put the back cover back on the fob and press it down firmly until it snaps into place. You should now have a fully functional key fob with a new battery.
Here’s a step-by-step guide to inserting the new battery:
- Ensure the positive side of the battery is facing up.
- Gently push the battery into place until you hear a click.
- Replace the back cover on the fob.
- Press down firmly until the cover snaps into place.
- Test the key fob to make sure it works properly.
Closing the Battery Compartment
Once you’ve correctly replaced the battery, it’s time to close the battery compartment and ensure the key fob is properly assembled.
1. Align the Battery Compartment Cover
Carefully align the battery compartment cover with the groove on the key fob body. Make sure the cover is facing the correct direction and fits snugly.
2. Slide the Cover into Place
Slide the battery compartment cover back into place along the groove. Apply gentle pressure until it slides smoothly and locks into position.
3. Check for Proper Closure
After the cover is in place, gently shake the key fob to ensure the battery compartment is securely closed. There should be no rattling or movement of the cover.
4. Replace the Screw
If the battery compartment is secured by a screw, locate the screw and gently tighten it back into place. Do not overtighten the screw, as this can damage the key fob.
5. Verify Operation
Once the battery compartment is closed, press the buttons on the key fob to test if it’s functioning correctly. The buttons should respond promptly and send signals to the vehicle.
6. Maintaining the Key Fob
To ensure the longevity of your Honda key fob, consider the following tips:
| Tip | Description |
|---|---|
| Keep it Dry | Avoid exposing the key fob to excessive moisture or liquids. |
| Avoid Extreme Temperatures | Protect the key fob from extremely high or low temperatures that can damage the battery or electronics. |
| Clean Regularly | Periodically clean the key fob with a soft, dry cloth to remove dirt and debris. |
| Replace Battery Regularly | Change the battery according to the recommended intervals to prevent unexpected key fob failure. |
Testing the Key Fob
Before attempting to replace the battery, test the key fob to determine if battery replacement is necessary. Follow these steps to test the fob:
1. Press the lock button on the key fob and hold it for a few seconds.
If the car locks and the turn signals flash, the battery is functioning properly and does not need to be replaced.
2. Press the unlock button on the key fob and hold it for a few seconds.
If the car unlocks and the trunk or hatch opens, the battery is functioning properly and does not need to be replaced.
3. Walk away from the car and wait for the key fob to automatically lock the car.
If the car locks after a few minutes, the battery is functioning properly and does not need to be replaced.
4. Stand near the car and press the unlock button on the key fob.
If the car unlocks, the battery is functioning properly and does not need to be replaced.
5. Hold the key fob against your chin and speak into the microphone.
If the car responds to your voice commands, the battery is functioning properly and does not need to be replaced.
6. Check the display on the key fob.
If the display is clear and easy to read, the battery is functioning properly and does not need to be replaced.
7. Check the key fob for any physical signs of damage.
If there are any cracks, dents, or scratches on the key fob, it may need to be replaced regardless of the battery status. However, battery replacement may still be necessary if the key fob has been damaged or exposed to extreme temperatures or moisture.
Troubleshooting Battery Issues
If you’re experiencing problems with your Honda key fob’s battery, try these troubleshooting tips:
1. Check Battery Level
Use a voltmeter or battery tester to measure the voltage output of the battery. It should be between 3.0 and 3.3 volts.
2. Clean Battery Contacts
Corrosion or dirt on the battery contacts can prevent proper contact. Clean them using a cotton swab dipped in rubbing alcohol.
3. Replace Battery
If cleaning the contacts doesn’t solve the issue, replace the battery with a new one of the same type and size.
4. Resync Fob
Sometimes, a battery replacement can cause the fob to lose its pairing with the vehicle. Resync it by following the instructions in your Honda owner’s manual.
5. Check for Damaged Wiring
Inspect the wiring for any visible damage or loose connections. If you find any issues, have them repaired by a qualified mechanic.
6. Test Vehicle Battery
A weak vehicle battery can affect key fob functionality. Test the vehicle battery to ensure it’s delivering sufficient voltage.
7. Use Compatible Battery
Honda key fobs require specific battery types. Make sure to use the correct replacement battery as specified in your owner’s manual.
8. Advanced Troubleshooting
If the above steps haven’t resolved the issue, consider the following advanced troubleshooting techniques:
- Check for Signal Interference: Move the vehicle away from any potential sources of signal interference, such as other electronic devices or metal objects.
- Inspect Remote Control Unit: The remote control unit (RCU) inside the fob might be malfunctioning. Consult a professional for further diagnosis and repair.
- Update Software: Some Honda models allow for software updates that may address battery-related issues. Check for any available updates at your local Honda dealership.
| Battery Type | Honda Model |
|---|---|
| CR2032 | Accord, Civic, CR-V |
| CR2025 | Fit, HR-V, Odyssey |
Safety Precautions
Before changing the battery in your Honda key fob, it’s important to take some safety precautions:
| 1. | Park your vehicle in a safe location and turn off the engine. |
| 2. | Remove the key from the ignition. |
| 3. | Locate the key fob and inspect it for any damage. |
| 4. | If the key fob is damaged, do not attempt to change the battery yourself. Consult a qualified technician instead. |
| 5. | Gather the necessary tools, including a small screwdriver or coin. |
| 6. | Clean the area around the key fob and the tools you will be using to avoid dirt or debris getting inside the fob. |
| 7. | Wear gloves to protect your hands from any sharp edges or chemicals. |
| 8. | Work in a well-lit area to clearly see what you are doing. |
| 9. | Refer to the specific instructions for your Honda key fob model as the exact steps may vary slightly depending on the model. Consult your vehicle’s owner’s manual or Honda’s official website for detailed instructions. |
Step 1: Gather Materials
You will need a new battery (CR2025 or CR2032), a small Phillips head screwdriver, and possibly a pair of needle-nose pliers.
Step 2: Locate the Key Fob’s Battery Compartment
The battery compartment is usually located on the back or bottom of the key fob. Look for a small, round cover with a notch or groove.
Step 3: Pry Open the Battery Compartment
Use the screwdriver or pliers to gently pry open the battery compartment cover. Be careful not to damage the cover or the key fob.
Step 4: Remove the Old Battery
Use your fingers or a pair of pliers to remove the old battery. Be careful not to touch the metal contacts on the battery.
Step 5: Insert the New Battery
Place the new battery into the battery compartment, positive (+) side up. Make sure the battery is seated firmly in place.
Step 6: Close the Battery Compartment
Snap the battery compartment cover back into place. Press down firmly to ensure it is secure.
Step 7: Test the Key Fob
Press a button on the key fob to test if it is working properly. If the key fob does not work, check the battery connections and make sure the battery is inserted correctly.
Step 8: Replace the Battery Regularly
Key fob batteries typically last for one to two years. Replace the battery as soon as you notice the key fob becoming less responsive.
Additional Tips
Here are some additional tips to help you change the battery on your Honda key fob:
10. Use the Right Battery Size
Make sure to use the correct battery size for your key fob. The battery size is usually printed on the back of the key fob or in the owner’s manual.
11. Don’t Overtighten the Battery Compartment
When closing the battery compartment, do not overtighten the screw or you may damage the cover.
12. Keep the Key Fob Dry
Water can damage the key fob’s electronics. Keep the key fob dry and avoid exposing it to rain or water.
13. Don’t Drop the Key Fob
Dropping the key fob can damage the electronics. Be careful not to drop the key fob and handle it with care.
14. Store the Key Fob Safely
When not in use, store the key fob in a safe place where it will not be damaged. Avoid leaving the key fob in direct sunlight or in a hot car.
How to Change the Battery on a Honda Key Fob
Replacing the battery in your Honda key fob is a simple task that can be done in a matter of minutes. Follow these steps to ensure the fob functions properly:
- Locate the key release button. This button is usually located on the side of the fob.
- Press the button and pull the metal key out of the fob.
- Flip the fob over and locate the battery cover.
- Gently pry open the cover using a small flathead screwdriver or a fingernail.
- Remove the old battery and replace it with a new CR2032 battery, positive side up.
- Close the battery cover and snap it back into place.
- Reinsert the metal key into the fob until it clicks.
People Also Ask about How to Change Battery on Honda Key Fob
How often should I replace the battery in my Honda key fob?
The battery in your Honda key fob should be replaced every 3-5 years or when the fob starts to malfunction.
What are the symptoms of a dead battery in my Honda key fob?
Symptoms of a dead battery in a Honda key fob include:
– The key fob not unlocking or locking the car
– The key fob not starting the car
– The key fob having a weak or intermittent signal
Can I change the battery in my Honda key fob myself?
Yes, changing the battery in a Honda key fob is a simple task that can be done by anyone with basic tools.
