How To Open A Subaru Key Fob: Replace Battery Easily Without Tools [Updated On- 2025]

To open a Subaru key fob for battery replacement, find the small silver button on the back and press it. Remove the mechanical key. Use a small screwdriver to gently pry open the fob. Insert a new CR2032 battery, making sure it faces the correct way. Close the fob and test it to ensure it works.

Once you have access, note the position of the old battery. Most Subaru key fobs use a CR2032 battery, which is a common type. Remove the old battery by pushing it out from its compartment. Insert a new CR2032 battery, ensuring the positive (+) side faces the correct direction, often marked in the compartment.

After replacing the battery, align the two halves of the key fob. Press them together until they click securely in place. This simple process allows you to maintain your Subaru key fob without needing any special tools.

Now that your Subaru key fob is fully functional again, it’s important to be aware of common signs that indicate it might need another battery replacement soon.

# Table of Contents

How Can You Tell If Your Subaru Key Fob Needs a Battery Replacement?

You can tell if your Subaru key fob needs a battery replacement by observing warning signs such as decreased range, unresponsive buttons, or the need to press buttons multiple times for a response.

Decreased range: If you notice that you have to be much closer to your vehicle to unlock it, this may indicate a weak battery. A typical key fob should work within a range of about 30 feet. If this range significantly shrinks, it suggests the battery is losing power.

Unresponsive buttons: When pressing buttons on your key fob results in no action, the battery may be weak. A fully functional key fob should respond immediately. If your fob requires multiple presses or does not work at all, it may be time to replace the battery.

Need to press buttons multiple times: If you find yourself needing to press the buttons repeatedly for the fob to work, this is another sign of a declining battery. A key fob should communicate with the vehicle on the first try without needing several pushes.

These signs generally indicate the need for a battery change. Typically, replacing the battery can restore normal functionality. It is advisable to replace the battery with a new one to ensure your key fob works correctly.

What Steps Should You Take to Open Your Subaru Key Fob?

To open your Subaru key fob, you typically need to replace the battery. This process can often be done without any special tools.

Gather necessary items:
– Replacement battery (CR2032)
– Flathead screwdriver (optional)
Locate the small notch:
– Find the notch on the side of the key fob.
Pry the fob open:
– Use the notch to gently separate the two halves of the fob.
Remove the old battery:
– Take out the old battery carefully.
Insert the new battery:
– Place the new CR2032 battery in the correct orientation.
Snap the fob back together:
– Align the two halves and press them back into place.
Test the key fob:
– Check if the key fob functions correctly.

Replacing the battery in a Subaru key fob is a straightforward task. However, some users may have different experiences based on specific models or existing wear and tear on their fob.

Different battery configurations:
– Models may use different types of batteries.
Wear and tear effects:
– Older key fobs may be more difficult to open.
Key fob function after battery change:
– Sometimes, a key fob may need to be reprogrammed after a battery replacement.

In discussing ‘How to open a Subaru key fob’, it’s essential to understand the battery replacement process and the factors that might complicate it.

Different Battery Configurations:
In the discussion of ‘Different battery configurations,’ it is important to acknowledge that Subaru models use various battery types for their key fobs. The CR2032 battery is common, but some models may require a different size. Always check your owner’s manual for the correct battery specifications.
Wear and Tear Effects:
When considering ‘Wear and tear effects,’ it is critical to note that older key fobs might contain brittle or worn parts. Excessive opening and closing can weaken the fob’s clips, making it difficult to separate the halves without causing damage. If significant wear is observed, professional assistance may be necessary to avoid breaking the fob.
Key Fob Function after Battery Change:
In addressing ‘Key fob function after battery change,’ users should note that a battery replacement does not always guarantee functionality. Some fobs may require reprogramming if they do not respond after a battery change. This can often be done at a dealership or through specific procedures outlined in the vehicle manual.

Understanding these factors can enhance the experience of opening and maintaining a Subaru key fob.

How Can You Prevent Damage When Opening Your Subaru Key Fob?

To prevent damage when opening your Subaru key fob, follow these essential steps: use a plastic opening tool, work in a clean area, and avoid forceful manipulation.

Using a plastic opening tool helps prevent scratches and damage to the fob’s casing. Metal tools can easily mar the finish. Carefully insert the plastic tool into the seam of the fob and gently pry it open.

Working in a clean area reduces the risk of losing small components. Open the fob on a flat surface to avoid dropping or losing batteries and parts. A clutter-free environment helps keep everything organized.

Avoiding forceful manipulation is crucial. If the fob does not open easily, do not force it. Check for any screws or clips that may still be holding it together. Forcing the fob can break internal components or damage the casing.

By following these steps, you minimize the risk of damage while opening your Subaru key fob. This care ensures your key fob remains functional and intact.

How Do You Safely Remove the Old Battery from Your Subaru Key Fob?

To safely remove the old battery from your Subaru key fob, follow these steps: use a flat tool to open the fob, carefully detach the circuit board, and replace the battery.

First, use a flat tool to open the fob. Insert the tool into the small gap along the seam of the key fob. Gently twist or pry the tool to separate the two halves of the fob. Take care not to use excessive force, as this can damage the casing.

Next, carefully detach the circuit board. The circuit board may be connected to the fob with clips or additional adhesive. Gently lift the circuit board from the fob using your fingers or the tool. Avoid touching the electronic components on the board to prevent any potential damage.

Now, replace the old battery. Check the type of battery required for your Subaru key fob, typically a CR2032 lithium battery. Remove the old battery from its compartment by noting its orientation, as the new battery must be installed in the same way. Insert the new battery, ensuring it is secure and properly aligned.

Finally, reassemble the key fob. Align the two halves of the fob and press them back together until you hear a click. Ensure there are no gaps, indicating the fob is securely closed. Test the key fob to ensure it is functioning properly after battery replacement.

What Type of Battery Do You Need for Your Subaru Key Fob?

You need a CR2032 battery for your Subaru key fob.

Battery Type: CR2032
Replacement Process: Simple and user-friendly
Alternative Battery Options: Limited compatibility with CR2025 in older models
Frequency of Replacement: Generally every 2-3 years
Indicators for Replacement: Weak signal or remote failure

Understanding the different aspects surrounding battery selection can help ensure you maintain your key fob effectively.

Battery Type: CR2032
The CR2032 battery is a 3-volt lithium battery commonly used in various electronic devices, including key fobs. This battery size features a diameter of 20mm and a thickness of 3.2mm. Its reliability and longevity make it an ideal choice for Subaru key fobs. Users often report that the original battery lasts an average of three years under typical use conditions.
Replacement Process: Simple and user-friendly
Replacing a CR2032 battery in a Subaru key fob is straightforward. Users can usually open the fob by gently prying it apart with a flat tool, extracting the old battery, and inserting the new one. This process typically requires no special tools or skills, allowing most owners to do it themselves without difficulty.
Alternative Battery Options: Limited compatibility with CR2025 in older models
Some older Subaru key fob models may accept a CR2025 battery instead. This battery is slightly thinner, measuring 2.5mm in thickness. While it can work for some fobs, it’s essential to check the owner’s manual or existing battery type to ensure compatibility.
Frequency of Replacement: Generally every 2-3 years
The battery life of a CR2032 in a Subaru key fob generally spans two to three years, depending on usage frequency. Regular checks on battery performance can prevent unexpected fob failures. Usage conditions such as climate and remote frequency can also influence how often a replacement is needed.
Indicators for Replacement: Weak signal or remote failure
Signs that indicate a need for battery replacement include a weak signal when locking/unlocking doors or the fob not functioning at all. Observing these signs can help users address battery issues promptly and avoid being locked out of their vehicles.

By understanding these components, Subaru owners can ensure their key fobs operate smoothly and efficiently.

How Should You Properly Install a New Battery in Your Subaru Key Fob?

To properly install a new battery in your Subaru key fob, follow these straightforward steps. First, determine the correct battery type, which is commonly a CR2032 lithium coin cell for most Subaru models. The installation process typically requires five to ten minutes.

Begin by opening the key fob. Insert a flat tool, like a small screwdriver, into the seam of the fob. Gently twist to separate the two halves without damaging the plastic. Once opened, identify the old battery. Take note of the positive side, which is usually marked with a “+” sign.

Next, remove the old battery and carefully insert the new one, ensuring the positive side is oriented correctly. Gently press the battery into place until it sits snugly. Align the two halves of the fob and press firmly until they click together, indicating a secure closure.

It’s essential to handle components delicately to avoid damaging the internal circuitry. For example, excessive force can break the circuit board. Additionally, consider the battery’s expiration date; fresher batteries enhance performance and longevity of use.

Temperature and humidity can also affect the battery’s lifespan. High temperatures can cause the battery to deplete faster, while extreme cold may affect the key fob’s functionality.

In summary, replacing the battery in your Subaru key fob is a simple task that can enhance the performance of your keyless entry system. Ensure you use the proper battery type, handle the components carefully, and consider environmental factors that may impact battery life. For further exploration, look into key fob maintenance tips or seek professional assistance if you encounter persistent issues.

What Final Checks Ensure Your Subaru Key Fob Works After Battery Replacement?

To ensure your Subaru key fob works after a battery replacement, perform the following checks.

Check battery orientation.
Verify battery compatibility.
Test key fob functions.
Re-sync the key fob if necessary.
Inspect for physical damage.
Assess proximity to the vehicle.

These checks help ensure proper functionality. Understanding how each factor affects the key fob’s operation is essential.

Check Battery Orientation: Checking the battery orientation involves ensuring that the positive and negative sides of the new battery are aligned correctly according to your key fob design. If the battery is reversed, the fob will not function.
Verify Battery Compatibility: Verifying battery compatibility requires confirming that the replacement battery matches the type specified by the manufacturer. Common types for Subaru fobs include CR2032 batteries. Using the wrong type can lead to malfunction.
Test Key Fob Functions: Testing key fob functions means pressing the buttons to see if they perform their tasks, such as unlocking or locking doors. If the buttons do not respond, further troubleshooting may be necessary.
Re-sync the Key Fob if Necessary: Re-syncing the key fob involves following the specific steps in the vehicle’s manual to reset the connection between the fob and the car. This can resolve any issues caused by changing the battery.
Inspect for Physical Damage: Inspecting for physical damage includes checking for cracks in the fob or broken buttons. Even slight damage can impede functionality and should be addressed immediately.
Assess Proximity to the Vehicle: Assessing proximity to the vehicle ensures that you are within an adequate range. Key fobs may not work properly if you are too far away from the car, so moving closer can help determine if range is an issue.

By following these checks, you can ensure that your Subaru key fob operates correctly after a battery replacement.

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