How To Replace Battery In 09 Honda Fit Key Fob: A Simple Guide For Key Battery Replacement [Updated On- 2025]

To replace the battery in a 2009 Honda Fit key fob, you need a CR1616 coin battery. First, find the seam on the key fob. Use a small flat tool to carefully open the cover. Take out the old battery and insert the new one, making sure it is positioned correctly. Close the fob to finish. For detailed help, watch a video tutorial or follow a step-by-step guide.

First, locate the seam along the edge of the key fob. Use the small screwdriver to gently pry apart the two halves of the fob. Be cautious to avoid damaging the casing. Once open, remove the old battery. Note the orientation of the battery’s positive (+) and negative (-) sides to ensure correct placement of the new one.

Next, insert the new battery in the same orientation as the old one. After securing the new battery, carefully snap the key fob halves back together. Ensure they fit snugly and that there are no gaps. Test the key fob to confirm that it functions properly with your vehicle.

Now that you have successfully replaced the battery in your 2009 Honda Fit key fob, you may wonder about troubleshooting any future issues. Understanding key fob malfunction can help you address problems quickly and effectively, ensuring reliable access to your vehicle.

# Table of Contents

Why Is It Important to Replace the Battery in Your 09 Honda Fit Key Fob?

Replacing the battery in your 2009 Honda Fit key fob is important for several reasons. A dead battery can prevent your key fob from functioning, which means you may not be able to unlock or start your vehicle. Regularly changing the battery ensures reliable performance and security.

The National Highway Traffic Safety Administration (NHTSA) provides a comprehensive overview of the importance of functional key fobs in vehicle safety and convenience. They emphasize that key fobs enhance vehicle access and security.

Key fob batteries typically wear out over time. When the battery weakens, you may notice decreased range or intermittent functionality. This deterioration is primarily due to the chemical reactions within the battery cells, which generate the electrical energy that powers the fob. Environmental factors, such as extreme temperatures or humidity, can further accelerate battery depletion.

A key fob contains a small battery, usually a coin cell, which powers its electronic components. These components include transmitters and receivers that communicate with the vehicle. If the battery dies, the key fob cannot send a signal to unlock the doors or start the engine, rendering it ineffective. In most cases, this type of battery is simple to replace with minimal tools.

Several conditions can contribute to the need for battery replacement. Frequent use of the key fob, exposure to extreme temperatures, and leaving the fob near electronic devices can all shorten battery life. For example, if you use your key fob multiple times daily, the battery will deplete faster compared to less frequent use. Additionally, if the fob is stored in a hot vehicle, this may also impact battery longevity.

In summary, replacing the battery in your 2009 Honda Fit key fob is essential for maintaining the performance and security of your vehicle. Regularly replacing the battery minimizes inconvenience and ensures your car functions properly.

How Can You Tell When Your 09 Honda Fit Key Fob Battery Needs Replacement?

You can tell when your 2009 Honda Fit key fob battery needs replacement by observing performance issues, such as a decreased range of operation or intermittent functionality.

Key indicators of a failing key fob battery include the following:

Decreased Range: If your key fob no longer unlocks your doors from a reasonable distance, the battery may be weak. Most fobs operate effectively within 30 feet, so reduced effectiveness indicates a need for replacement.
Intermittent Functionality: If your key fob works sporadically, such as requiring multiple presses to unlock or lock your vehicle, the battery may be nearing the end of its life.
Warning Light: Some vehicles show a warning light on the dashboard if the key fob battery is low. This alert can remind you to replace the battery soon.
Unresponsive Buttons: If the buttons on the key fob no longer respond or respond inconsistently when pressed, this symptom often indicates a depleted battery.
Visual Inspection: If accessible, check the battery compartment for corrosion. Corroded battery connections can also lead to malfunctioning.

To prevent unexpected issues, consider replacing the battery promptly when you notice these signs. Regular maintenance of the key fob ensures reliable operation.

What Tools Do You Need for Replacing the Battery in a 09 Honda Fit Key Fob?

To replace the battery in a 2009 Honda Fit key fob, you need a few basic tools.

Flathead screwdriver
Coin (optional)
Replacement battery (CR1616)

These tools facilitate an easy and efficient battery replacement process.

Flathead screwdriver:
A flathead screwdriver helps to pry open the key fob. It allows you to safely separate the two halves of the fob without damaging the casing. Many individuals recommend using a flathead screwdriver as it is commonly available in most households.
Coin:
A coin can serve as an alternative tool for opening the key fob. It is useful for those who may not have a flathead screwdriver readily available. Coins can effectively create a gap to help separate the fob’s halves.
Replacement battery:
The key fob requires a CR1616 battery. This battery type is widely available in electronics stores and online. The correct battery ensures that the key fob functions properly after replacement.

Replacing the battery in a 2009 Honda Fit key fob is a straightforward process. You begin by using the flathead screwdriver or coin to open the fob. Insert the tool between the fob halves and gently twist to separate them. This action exposes the battery compartment.

After accessing the battery compartment, remove the old battery. Dispose of it properly and install the new CR1616 battery. Ensure the positive side aligns correctly, as incorrect placement can lead to malfunction. Finally, snap the fob halves back together securely.

The Honda Fit key fob’s battery replacement process showcases simplicity. Most drivers can accomplish this with minimal tools, effectively prolonging the life of their key fob.

How Do You Open the 09 Honda Fit Key Fob to Replace the Battery?

To open the 2009 Honda Fit key fob for battery replacement, you need to carefully use a flat tool to separate the two halves of the fob. Here are the detailed steps to accomplish this:

Locate the seam of the key fob. This seam runs along the edge where the two halves meet.
Insert a flat, thin tool, such as a small screwdriver or a coin, into the seam. Gently twist the tool to create a gap.
Slowly pull apart the two halves of the fob after creating the gap. Be careful not to apply too much force, as this might damage the internal components.
Once the fob is open, remove the old battery. Note the orientation of the battery (positive and negative sides) for proper placement of the new battery.
Insert the new battery into the same position. Ensure that it matches the original battery’s orientation.
Press the two halves of the fob back together until they snap into place securely.

Following these steps will allow you to replace the battery in your 2009 Honda Fit key fob effectively and easily.

What Type of Battery Should You Use for Your 09 Honda Fit Key Fob Replacement?

To replace the key fob battery in a 2009 Honda Fit, use a CR1616 battery.

Battery Type: CR1616
Compatibility: Confirm compatibility for 2009 Honda Fit.
Installation Difficulty: Generally easy, requires basic tools.
Alternative Battery: Some sources mention CR1620 as an alternative.

Replacing the battery is a straightforward process, but there are differing opinions on the ideal battery specifications.

Battery Type: CR1616
The battery type for the 2009 Honda Fit key fob is CR1616. This is a round lithium coin battery that provides the necessary power for the fob’s electronic components. The CR1616 battery has a diameter of 16mm and a thickness of 1.6mm. According to the manufacturer, this battery type is effective for the keyless entry function, ensuring optimal performance.
Compatibility
Confirming compatibility is essential. The 2009 Honda Fit typically requires a CR1616 battery. However, always check the existing battery in the fob before purchase. For example, some users mistakenly attempt to use a CR1620, believing it to be suitable. Yet, the difference in thickness can lead to improper fitting and functionality.
Installation Difficulty
The installation process is generally easy and does not require specialized tools. Most users can complete it with a small flathead screwdriver. A simple procedure involves opening the key fob case, swapping the old battery for a new one, and closing the case securely. Many tutorials are available online that demonstrate the step-by-step process.
Alternative Battery
While the CR1616 is the standard battery, some users suggest the CR1620 as an alternative. However, this is controversial due to size discrepancies. The CR1620 is slightly thicker, which may cause issues with the key fob case closure. It is advisable to stick with the recommended CR1616 for the best results.

In summary, for key fob replacement in a 2009 Honda Fit, use a CR1616 battery for optimal compatibility and function.

How Do You Properly Install a New Battery in Your 09 Honda Fit Key Fob?

To properly install a new battery in your 2009 Honda Fit key fob, you should follow these steps: gather the necessary tools, open the key fob casing, replace the battery, and reassemble the key fob.

To begin, you need specific tools for the process. A small flathead screwdriver or a coin can help you pry open the key fob. This tool will make it easier to access the battery compartment.

Next, you will open the key fob casing. Locate the seam along the side of the fob. Carefully insert the flathead screwdriver or the coin into the seam and gently twist to separate the two halves. Take care not to apply too much force to avoid damaging the casing.

Once you have opened the fob, you will see the old battery. Note the orientation of the battery, specifically which side is positive (+) and which is negative (-). This orientation is crucial for the proper functioning of the key fob. Remove the old battery by carefully lifting it out of its compartment.

Now, insert the new battery. Ensure that you position the new battery in the same orientation as the old one. The positive side should face the same direction as it did before. Press down gently until it is securely in place.

After replacing the battery, reassemble the key fob. Align the two halves of the casing, ensuring no wires are pinched. Firmly press the casing pieces together until they snap back into place. Listen for a click that indicates the fob is secure.

Finally, test the key fob to ensure it is functioning correctly. Press the lock and unlock buttons to confirm that the new battery is working. If it operates smoothly, you have successfully replaced the battery in your 09 Honda Fit key fob.

What Should You Do After You Replace the Battery in Your 09 Honda Fit Key Fob?

After replacing the battery in your 2009 Honda Fit key fob, you should follow a few key steps to ensure it functions correctly.

Test the key fob buttons.
Reprogram the key fob, if necessary.
Confirm the vehicle responds to the key fob.
Dispose of the old battery properly.

To ensure optimal functionality, it is important to perform these steps methodically.

Test the Key Fob Buttons: Testing the key fob buttons immediately after replacing the battery is crucial. This step helps to confirm that the new battery is installed correctly and is providing sufficient power. Each button, including the lock, unlock, and panic button, should be pressed to verify functionality.
Reprogram the Key Fob, If Necessary: Reprogramming the key fob may be required if it does not function after the battery replacement. Some Honda models need the key fob to be reprogrammed after a battery change. Instructions are available in the owner’s manual, which typically involves steps to enter the vehicle and turn the ignition on.
Confirm the Vehicle Responds to the Key Fob: After testing and reprogramming, ensure the vehicle responds to the key fob’s signals. Open the doors using the unlock button, and try starting the engine. Proper response indicates successful battery replacement.
Dispose of the Old Battery Properly: It is important to dispose of the old battery in accordance with local regulations. Many areas have specific recycling programs for batteries due to their hazardous material content. Proper disposal prevents environmental pollution and follows safety precautions.

Taking these steps guarantees that the key fob will work effectively and prolongs its lifespan.

What Common Mistakes Should You Avoid When Replacing the Battery in a 09 Honda Fit Key Fob?

When replacing the battery in a 2009 Honda Fit key fob, you should avoid certain common mistakes to ensure proper function and longevity.

Using the wrong battery type
Not cleaning contacts before installation
Forcing the key fob open
Neglecting to test the key fob afterward
Forgetting to reset the fob if needed

These mistakes can impact the successful replacement of the battery. Understanding their implications is crucial.

Using the wrong battery type: This mistake arises when individuals mistakenly select an incorrect battery model. The 2009 Honda Fit key fob requires a CR2032 lithium battery. Using a different type, such as a CR2025 or CR2016, can lead to compatibility issues, resulting in the key fob failing to operate properly. Check your vehicle’s manual to confirm the correct battery type.
Not cleaning contacts before installation: Not cleaning the battery contacts can hinder the connection and affect the key fob’s performance. Dust, debris, or corrosion can accumulate on the contacts over time. A clean surface ensures better conductivity, allowing the key fob to work optimally. Using a small cloth or cotton swab with rubbing alcohol can effectively clean these contacts.
Forcing the key fob open: Opening the key fob without care can cause physical damage. The 2009 Honda Fit key fob has clips that need gentle prying to avoid breaking. Using a plastic tool, like a spudger, designed for opening electronics can minimize damage while providing access to the battery compartment.
Neglecting to test the key fob afterward: After replacing the battery, you must test the key fob to ensure it functions as expected. Failing to do so may lead to an inconvenient situation later when the key fob does not operate. Simply press the lock and unlock buttons to confirm they are responsive.
Forgetting to reset the fob if needed: In some instances, a reset may be necessary following a battery change. If the fob does not work after replacing the battery, consult the owner’s manual for specific instructions on resetting it. This step can restore functionality if there is a power loss.

In summary, avoiding these mistakes will help you successfully replace the battery in your 2009 Honda Fit key fob while ensuring it operates reliably.

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