Maintaining the smooth functionality of your Honda vehicle’s key is essential for convenient access and peace of mind. Over time, the battery in your Honda key may deplete, leading to intermittent or complete failure. Replacing the battery is a relatively straightforward task that can save you time and expense compared to visiting a dealership or locksmith. This guide will provide step-by-step instructions on how to change the Honda key battery, empowering you to regain the control of your vehicle’s entry and ignition systems.
To initiate the battery replacement process, you will need a new CR-V battery, a small screwdriver (either flathead or Phillips head), and a clean work surface. Once you have gathered the necessary tools, locate the small button or lever on the side of the key fob. Pressing or sliding this release mechanism will allow you to separate the key blade from the fob body. Next, use the screwdriver to carefully pry open the fob, exposing the internal components.
Once the fob is open, identify the old battery and use the screwdriver to gently remove it. Pay attention to the orientation of the battery, as the new battery must be inserted with the positive side facing upwards. Insert the new CR-V battery into the designated slot, ensuring that it is properly aligned. Once the battery is in place, close the fob and reattach the key blade. Test the key fob by pressing the buttons; if the lights illuminate and the buttons respond, the battery replacement was successful. By following these steps, you can quickly and easily change the Honda key battery, restoring your vehicle’s keyless entry and ignition functionality.
Identifying the Key Fob Battery Type
Identifying the battery type in your Honda key fob is crucial for a successful replacement. Here’s a comprehensive guide to help you determine the type of battery you need:
Key Fob Battery Types
Honda key fobs typically use button cell or coin-type batteries. These small, round batteries come in various sizes and capacities, each designated by a unique code. The most common battery types used in Honda key fobs are:
| Battery Code | Size | Voltage | Capacity |
|---|---|---|---|
| CR2025 | 20 mm x 2.5 mm | 3V | 160 mAh |
| CR2032 | 20 mm x 3.2 mm | 3V | 225 mAh |
| CR1616 | 16 mm x 1.6 mm | 3V | 50 mAh |
| CR1620 | 16 mm x 2.0 mm | 3V | 75 mAh |
To determine the battery type in your Honda key fob, refer to the owner’s manual or look for markings on the back of the fob. Some key fobs have the battery code embossed or printed directly on the fob. If you cannot find it there, you can remove the battery and check its code.
Button Cell Identification
Button cell batteries are identified by their size and voltage. The size is usually indicated by a two-digit code, with the first digit representing the diameter and the second digit representing the thickness. For example, a CR2025 battery has a diameter of 20 mm and a thickness of 2.5 mm.
The voltage of a button cell battery is indicated by the first letter in its code. In the case of Honda key fobs, the battery is always 3V.
Locating the Key Fob Battery Compartment
Identifying the location of the battery compartment in your Honda key fob is crucial for a successful battery replacement. Here’s a comprehensive guide to assist you:
Step 1: Identify the Release Button
Locate the small, inconspicuous button on the side or bottom of the key fob. This button is typically recessed or flush with the fob’s surface. Pressing this button will release the mechanical lock holding the key’s two halves together.
Step 2: Separate the Key Fob
Once you’ve identified the release button, firmly press it and simultaneously pull the key’s two halves apart. Be gentle to avoid damaging any delicate components inside. You may encounter some resistance, but with a gentle tug, the fob should split into two sections.
Step 3: Locate the Battery Compartment
With the key fob separated, you’ll find a small plastic compartment housing the battery. This compartment is usually located within one of the fob’s halves, often near the bottom or center. It may be secured with a small screw or simply held in place by friction.
| Honda Key Fob Models | Battery Compartment Location |
|---|---|
| 2006-2015 Civic | Bottom half, near the center |
| 2007-2013 Accord | Bottom half, near the bottom |
| 2012-2016 CR-V | Top half, near the center |
| 2016-2021 Pilot | Bottom half, secured with a screw |
Opening the Key Fob Battery Compartment
The battery compartment of your Honda key fob is usually located on the back or side of the fob. To open it, you’ll need to use a small flathead screwdriver or a key to pry it open.
Here are the detailed steps on how to open the key fob battery compartment:
- Locate the battery compartment. It’s usually on the back or side of the fob. It may be covered by a small plastic tab or a screw.
- Remove the tab or screw. If there’s a plastic tab, use your fingernail or a small flathead screwdriver to pry it off. If there’s a screw, use a small Phillips head screwdriver to remove it.
- Open the battery compartment. Once the tab or screw is removed, you should be able to open the battery compartment. Be careful not to break the compartment or the key fob.
If you’re having trouble opening the battery compartment, you can consult your Honda owner’s manual for more specific instructions.
Possible Causes of Key Fob Battery Failure
There are several possible causes for a Honda key fob battery to fail, including:
| Cause | Symptoms |
|---|---|
| Battery is depleted | Key fob doesn’t work or works intermittently |
| Battery terminals are corroded | Key fob doesn’t work or works intermittently |
| Key fob is damaged | Key fob doesn’t work or works intermittently |
Removing the Old Battery
A weak key battery is a common automotive issue that can be readily resolved by replacing the battery . Here’s a comprehensive guide on how to do so:
1. Gather your materials:
You’ll need a new CR2032 coin battery and a small screwdriver or key fob release tool.
2. Locate the Key Fob Release Button
On most Honda key fobs, the release button is typically located on the side. Press it to separate the key fob into two parts.
3. Open the Key Fob Housing
Use the screwdriver to gently pry open the housing halves. Be careful not to damage the internal components.
4. Remove the Old Battery
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Once the housing is open, locate the old battery. It will be a small, round, coin-shaped battery.
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Using a plastic tool or your fingernails, carefully pry the old battery out of its holder. Avoid touching the battery terminals with your bare hands.
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Dispose of the old battery properly. Many recycling centers accept used batteries.
Inserting the New Battery
Slide the small metal clip on the side of the remote to open the case. Carefully separate the case into two halves.
Remove the old battery from its slot. Make sure to note the correct orientation of the battery.
Insert the new CR2032 battery into the slot. Ensure that the positive (+) side of the battery is facing upwards.
Carefully snap the case back together. Make sure the locking mechanism clicks securely into place.
If your remote has a rubber pad or buttons, press them a few times to ensure the battery is making proper contact.
Positioning the Battery Correctly
The battery must be inserted with the positive (+) side facing upwards. If the battery is inserted incorrectly, it may not power the remote or may cause damage.
| Correct Orientation | Incorrect Orientation |
|---|---|
 |
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Closing the Key Fob Battery Compartment
Once the battery has been replaced, it’s time to close the battery compartment.
1. Check the battery compartment for any debris or damage. If there are any issues, clean the compartment with a soft cloth or compressed air.
2. If your key fob has a screw that holds the compartment closed, retighten it until it’s snug. Avoid overtightening.
3. If your key fob has a latch instead of a screw, make sure the latch is properly aligned before closing it. Gently push the latch into place until it clicks.
4. Ensure the lid is firmly closed and secure. If the lid is not closed properly, the battery may become loose or fall out.
5. Test the key fob to make sure it’s working correctly. Press the buttons and confirm that they function as intended.
6. If the key fob does not work after closing the battery compartment, double-check the battery’s orientation. Ensure the positive (+) and negative (-) terminals are aligned correctly. If the battery is still not working, try replacing it with a new one.
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To prevent corrosion or damage to the key fob, make sure your hands are clean when replacing the battery. Avoid touching the battery terminals directly.
Verifying Battery Replacement SuccessOnce you’ve replaced the battery, you’ll want to verify that it’s working properly. Here are a few steps you can take: **1. Test the Key Fob:** Press the lock or unlock button on the key fob. The car’s headlights should flash or the locks should engage, indicating that the replacement battery is functional. **2. Start the Car:** Insert the key fob into the ignition and attempt to start the vehicle. A successful battery replacement will enable the car to crank and start without any issues. **3. Check the Battery Voltage:** Using a multimeter, measure the voltage of the new battery. It should read around 3 volts. A voltage below 2.7 volts indicates a weak or dead battery. **4. Observe the Key Fob LED:** Many key fobs have an LED indicator that lights up when a button is pressed. Ensure that this LED is functioning and illuminates when the buttons are activated. **5. Test the Range:** Move away from the car with the key fob and check the range of the signal. The key fob should be able to lock and unlock the car from a reasonable distance. **6. Repeat the Test:** Wait a few minutes and repeat the tests mentioned above to confirm that the battery replacement has been successful over time. **7. Refer to the Owner’s Manual:** Consult the owner’s manual for your specific Honda model to verify any additional steps or troubleshooting tips that may apply to your vehicle’s key battery replacement process. How to Change Honda Key BatteryStep 1: Locate the Key Battery CompartmentIdentify the small compartment on the side or back of your key fob. It may be covered by a small rubber or plastic flap. Step 2: Open the Battery CompartmentUse a small screwdriver or your fingernail to gently pry open the battery compartment flap. Step 3: Remove the Old BatteryUse your fingers or tweezers to carefully remove the old battery from the compartment. Step 4: Insert the New BatteryPlace the new battery into the compartment, ensuring that the positive and negative terminals align correctly. Step 5: Close the Battery CompartmentFirmly press down on the battery compartment flap to close it securely. Step 6: Test the Key FobPress any button on the key fob to verify that it is functioning properly. Step 7: Dispose of the Old Battery SafelyDiscard the old battery at an appropriate recycling facility to prevent environmental harm. Troubleshooting Key Fob Battery Issues
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| Battery Type | CR-V (2007-2011) | Civic (2006-2011) | Accord (2008-2012) |
|---|---|---|---|
| Key Fob Battery | CR2025 | CR2032 | CR2025 |
Safety Considerations for Key Fob Battery Replacement
1. Disconnect the Battery
Before you begin working on your key fob, disconnect the negative battery terminal of your vehicle. This will prevent any electrical hazards and ensure your safety.
2. Use the Correct Tools
Make sure you have the right tools for the job. You’ll need a small screwdriver or a pry tool to open the key fob and a new battery of the correct type.
3. Avoid Static Discharge
Static electricity can damage the key fob’s electronics. To prevent static discharge, touch a metal object to ground yourself before handling the key fob.
4. Handle with Care
The key fob’s components are fragile. Avoid dropping or mishandling it during the replacement process.
5. Clean the Contacts
Before installing the new battery, clean the battery contacts with a cotton swab and rubbing alcohol. This will ensure a good electrical connection.
6. Test the Battery
Once you’ve replaced the battery, test the key fob to make sure it’s working properly. Press the buttons and check for the corresponding lights or sounds.
7. Proper Disposal
Dispose of the old battery properly. Do not throw it in the trash with regular household waste. Check your local regulations for proper battery disposal.
8. Security Considerations
If your key fob transmits a security code, be aware that replacing the battery may require you to reprogram the fob. Refer to your vehicle’s owner’s manual for specific instructions.
9. Battery Type and Replacement Guide
Different Honda key fobs use different types of batteries. Refer to the table below for specific battery types and a step-by-step replacement guide for popular Honda key fob models:
| Key Fob Model | Battery Type | Replacement Guide |
|---|---|---|
| EK360313G | CR2025 | Click here for replacement guide |
| GQ43VT14T | CR1632 | Click here for replacement guide |
| 7214A-TF0-A01 | CR2016 | Click here for replacement guide |
Remove the Physical Key
Locate the small button on the back of the key fob, usually marked with the Honda logo. Press and hold the button while sliding the physical key out of the housing.
Pry Open the Key Fob
Use a small flat-head screwdriver or a butter knife to gently pry open the key fob’s housing. Be careful not to damage the casing.
Locate the Battery
Once the key fob is open, locate the small, round battery. It is usually held by a metal clip or a small rubber band.
Replace the Battery
Carefully remove the old battery and replace it with the new one. Make sure the positive (+) side of the battery is facing up.
Snap the Key Fob Back Together
Align the two halves of the key fob and snap them back together. The lock button should click when it is in place.
Test the Key Fob
Press the lock button to test the key fob. If it does not work, double-check the battery installation or try replacing the battery again.
Additional Tips for Extending Key Fob Battery Life
Reduce Key Ring Weight
Excessive weight on your key ring can put strain on the key fob’s electronics and drain the battery faster.
Avoid Extreme Temperatures
Extreme heat or cold can damage the key fob’s battery. Store it in a cool, dry location.
Disable Unused Features
If you don’t use certain features, such as the trunk release or panic alarm, consider disabling them to reduce battery consumption.
Change the Battery Regularly
Even if the key fob is working properly, it’s a good idea to change the battery every 6-12 months to prevent unexpected dead batteries.
Use a Specialized Key Fob Battery Tester
A key fob battery tester can accurately measure the battery’s voltage and indicate its remaining life.
Consider Using a Rechargeable Key Fob Battery
Rechargeable key fob batteries can be a more eco-friendly and cost-effective option in the long run.
Avoid Leaving Key Fob Inside Hot Cars
Extreme heat inside your car can significantly shorten the key fob battery’s life.
Avoid Constant Pressing of Buttons
Avoid excessively pressing the key fob’s buttons, as this can drain the battery.
Use the Smart Key System If Available
If your Honda has a smart key system, consider using it instead of the key fob as it typically consumes less battery power.
Check for Loose Wiring or Corrosion
Inspect the key fob’s wiring for any loose connections or corrosion, which can affect battery performance.
How to Change a Honda Key Battery
Replacing the battery in a Honda key is a simple and straightforward process. Here are the steps:
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Locate the small screw on the back of the key and remove it with a small screwdriver.
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Carefully pry open the key case using a flathead screwdriver or a key blade.
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Inside the key case, you will see the battery. Remove it by gently prying it out with a small screwdriver or your fingernail.
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Insert the new battery (CR2032) into the key case, ensuring that the positive (+) side faces up.
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Snap the key case back together and tighten the screw securely.
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Test the key to ensure it is working correctly.
People Also Ask
What type of battery does a Honda key use?
Honda keys use a CR2032 battery.
How do I know if my Honda key battery is dead?
Signs of a dead Honda key battery include:
- The key fob does not unlock or lock the car doors.
- The key fob does not start the car.
- The key fob’s LED light is dim or does not light up.
Can I change the battery in my Honda key myself?
Yes, you can change the battery in your Honda key yourself by following the steps outlined above.
