When your Subaru key fob starts to act up, it’s usually a sign that the battery is running low. Replacing the battery is a simple task that you can do yourself in just a few minutes. Here’s a step-by-step guide on how to do it.
First, you’ll need to identify the type of key fob you have. There are two main types of Subaru key fobs: those that have a physical key and those that don’t. If you have a key fob with a physical key, you’ll need to remove the key before you can replace the battery. To do this, simply insert the key into the slot on the back of the key fob and turn it to the unlock position. The key should then pop out.
Once you have removed the key, you can now access the battery compartment. On most Subaru key fobs, the battery compartment is located on the back of the fob. To open the compartment, simply slide the cover off. Once the compartment is open, you can remove the old battery and insert the new one. Make sure that the positive (+) and negative (-) terminals of the battery are aligned correctly. Once the new battery is in place, you can close the compartment and reinsert the key.
If you have a key fob that doesn’t have a physical key, the battery compartment will be located inside the fob. To access the compartment, you’ll need to use a small screwdriver to remove the screws that hold the fob together. Once the screws are removed, you can open the fob and replace the battery. Make sure that the positive (+) and negative (-) terminals of the battery are aligned correctly. Once the new battery is in place, you can close the fob and reinsert the screws.
Replacing the battery in your Subaru key fob is a simple task that can be done in just a few minutes. By following these steps, you can keep your key fob working properly and avoid the hassle of being stranded without a way to get into your car.
Inspecting the Key Fob
Before you can replace the battery in your Subaru key fob, you need to inspect it to determine the type of battery it uses and to identify any potential issues that may need to be addressed.
1. **Locate the battery compartment.** The battery compartment is typically located on the back or bottom of the key fob. It may be secured by a screw or a small latch. Use a small screwdriver or your fingernail to open the compartment.
| Subaru Key Fob Battery Types |
|---|
| CR1616 |
| CR1620 |
| CR2025 |
| CR2032 |
2. **Remove the old battery.** Once you have located the battery compartment, carefully remove the old battery. Note the orientation of the battery so that you can insert the new battery correctly.
3. **Inspect the battery terminals.** The battery terminals should be clean and free of corrosion. If the terminals are corroded, you can clean them with a cotton swab dipped in rubbing alcohol.
4. **Insert the new battery.** Insert the new battery into the compartment with the positive (+) side facing up. Make sure that the battery is securely seated in the compartment.
5. **Close the battery compartment.** Close the battery compartment and secure it with the screw or latch.
Locating the Battery Compartment
The location of the battery compartment varies depending on the Subaru model. However, it’s typically located in one of the following places:
- Inside the key fob, behind a small, pry-open panel.
- On the back of the key fob, under a removable cover.
To open the battery compartment, you’ll need a small screwdriver or a key. Gently pry open the panel or cover to reveal the battery.
| Model | Battery Compartment Location |
|---|---|
| Forester (2014-2018) | Inside the key fob, behind a pry-open panel. |
| Impreza (2017-2022) | On the back of the key fob, under a removable cover. |
| Legacy (2015-2020) | Inside the key fob, behind a pry-open panel. |
| Outback (2015-2019) | On the back of the key fob, under a removable cover. |
| XV Crosstrek (2018-2023) | Inside the key fob, behind a pry-open panel. |
Removing the Battery
**Step 1: Locate the Physical Key**
Remove the physical key from your Subaru key fob by pressing the designated release button on the side of the fob. The key will slide out, allowing you to access the battery compartment.
**Step 2: Identify the Battery Compartment**
The battery compartment is typically located on the back or bottom of the key fob. It may be held in place by a small screw or a spring-loaded latch. Gently pry open the compartment using a small screwdriver or your fingernail.
**Step 3: Remove the Old Battery**
Use a pointed object, such as a toothpick or a small flat-head screwdriver, to gently pry out the old battery. Be careful not to damage the battery or the metal contacts inside the compartment.
| Battery Type | Commonly Used Batteries |
|---|---|
| CR2025 | Subaru Impreza (2012-2016), XV Crosstrek (2013-2017) |
| CR2032 | Subaru Legacy (2015-2019), Outback (2015-2019), Forester (2014-2018) |
| CR1620 | Subaru Ascent (2019-2022), Crosstrek (2018-2022) |
Inserting the New Battery
Before inserting the new battery, it is essential to ensure that you have the correct type. The required battery type may be indicated on the existing key fob battery or in the vehicle’s owner’s manual.
Once the correct battery has been obtained, follow these steps for insertion:
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Slide or pry open the key fob.
The key fob’s outer shell typically has a small notch or indent to facilitate sliding or prying it open. Locate this notch and insert a thin tool (such as a screwdriver or butter knife) into it. Carefully pry the shell open with minimal force to avoid damaging the fob.
-
Locate the battery compartment.
Once the key fob is open, identify the battery compartment. This compartment may be a separate enclosure or simply a recessed area within the key fob.
-
Remove the old battery.
Carefully use your finger or tweezers to remove the old battery from its compartment. Be cautious not to damage the battery terminals or any other components within the fob.
-
Install the new battery.
Take the new battery and check its orientation. Ensure that the positive (+) terminal of the battery corresponds to the positive (+) terminal indicated within the battery compartment. Gently insert the new battery into its place, ensuring that it is snugly fitted and facing the correct direction.
-
Close the key fob.
After the battery has been inserted, align the two halves of the key fob and gently press them together until they snap back into place. Test the functionality of the key fob by pressing buttons and ensuring that they operate as intended.
Positioning the Key Fob Chip
Flip the key fob over and look for a small, black chip near the center. This chip is the key fob’s transponder, and it needs to be aligned properly inside the fob. Take the end of a small, flat-head screwdriver and gently pry open the plastic casing. Be careful not to damage the chip or any other components inside.
Inserting the Battery
Find the small, silver-colored battery in your kit and carefully align it inside the fob. Make sure the positive (+) side of the battery is facing up towards the chip. Gently press the battery down into place until it snaps in securely.
Replacing the Key Blade (Optional)
If your key fob also has a key blade, you may need to replace it as well. Pull out the old key blade from the bottom of the fob and insert the new key blade in its place. Ensure it goes in smoothly and is properly aligned.
Reinserting the Transponder Chip
Once the battery and key blade (if necessary) are in place, carefully position the transponder chip back inside the key fob. Press down gently on the chip to ensure it fits snugly into its slot.
Closing the Key Fob
Bring the two halves of the key fob casing together and snap them shut. Ensure the casing fits together securely and that there are no gaps or rattles. Your key fob should now be reassembled, and the battery should be replaced.
Testing the Key Fob
Before you embark on the battery replacement process, it’s crucial to ascertain whether the key fob is truly malfunctioning or if there’s a different underlying issue. Follow these steps to test the key fob:
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Press the unlock button on the key fob repeatedly. If the car’s doors unlock reliably, the key fob is likely not the culprit.
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Try starting the car with the key fob in close proximity to the push-to-start button or the ignition.
-
If the car starts without issue, the problem may lie elsewhere in the vehicle’s electrical system.
| Symptom | Possible Cause |
|---|---|
| Key fob buttons don’t work | Battery may be weak or dead |
| Car doesn’t start with key fob | Battery may be dead |
| Key fob range is reduced | Battery may be weak |
| Key fob doesn’t work intermittently | Battery may be loose |
After performing these tests, if you’re confident that the key fob battery needs replacing, proceed with the battery replacement procedure.
Troubleshooting Battery Issues
If your Subaru key fob is not working as expected, it may be due to a battery issue. Here are some common troubleshooting steps you can try:
Check the Battery Type
The first step is to identify the type of battery used in your key fob. Different models may use different types of batteries, so refer to your owner’s manual or the back of the key fob for the correct information.
Replace the Battery
Once you have determined the battery type, replace it with a new one of the same type. Make sure to insert the battery correctly, with the positive (+) terminal facing up. Avoid touching the battery terminals with your bare hands, as this can reduce battery life.
Clean the Battery Contacts
If replacing the battery does not solve the issue, try cleaning the battery contacts in the key fob. Use a cotton swab or a soft cloth to gently remove any dirt or debris. Be careful not to damage the contacts.
Resync the Key Fob
In some cases, the key fob may need to be resynced with your vehicle. The resynchronization process differs depending on the Subaru model. Refer to your owner’s manual for detailed instructions.
Check the Key Fob Antenna
The key fob antenna can also cause battery issues if it is damaged or obstructed. Inspect the antenna for any visible damage or blockage. If the antenna is damaged, you may need to replace the key fob.
Check for Signal Interference
External factors such as electromagnetic interference or radio frequency interference can affect the key fob’s performance. Try moving away from potential sources of interference and see if the key fob starts working properly.
Consider Contacting the Dealership
If none of the above troubleshooting steps resolve the battery issue, you may need to contact your Subaru dealership. They have specialized equipment and expertise to diagnose and resolve more complex key fob problems.
Locate the Emergency Key
Locate the small notch on the back of the key fob. Insert the emergency key into the notch and pry open the case. You may need to use a small screwdriver or other tool to help you pry open the case.
Replace the Battery
Once the case is open, you will see the battery. Use your fingernail or a small tool to gently pry the battery out of its compartment. Insert the new battery into the compartment, making sure that the positive (+) and negative (-) terminals are aligned correctly.
Close the Case
Snap the case back together and make sure it is securely closed.
Programming the Key Fob (if necessary)
Programming the Key Fob (if necessary)
If the key fob does not work after replacing the battery, you may need to program it to your vehicle. The programming procedure varies depending on the year and model of your Subaru. Refer to your vehicle’s owner’s manual for specific instructions.
Common Programming Procedures
Here are some common programming procedures for Subaru key fobs:
- Insert the key into the ignition and turn it to the “ON” position without starting the engine.
- Press and hold the “Unlock” button on the key fob for 5 seconds.
- Press and hold the “Lock” button for 5 seconds.
- Repeat steps 2 and 3 three times.
- Remove the key from the ignition.
- Test the key fob by locking and unlocking the vehicle.
| Year | Model | Programming Procedure |
|---|---|---|
| 2010-2014 | Impreza, WRX, STI | Refer to the owner’s manual for specific instructions. |
| 2015-2019 | Legacy, Outback, Forester | Insert the key into the ignition and turn it to the “ON” position without starting the engine. Press and hold the “Unlock” button on the key fob for 5 seconds. Press and hold the “Lock” button for 5 seconds. Repeat steps 2 and 3 three times. Remove the key from the ignition. Test the key fob by locking and unlocking the vehicle. |
| 2020-Present | Crosstrek, Ascent | Refer to the owner’s manual for specific instructions. |
Maintaining the Key Fob
To ensure the longevity and optimal performance of your Subaru key fob, follow these maintenance tips:
Cleaning
Use a soft, damp cloth to wipe down the exterior of the key fob, avoiding any abrasive materials or harsh chemicals.
Battery Care
Replace the battery promptly when the fob’s LED indicator dims or the remote range decreases. Refer to the user manual for specific battery type and replacement instructions.
Water and Shock Resistance
Avoid exposing the key fob to extreme temperatures, water damage, or excessive shock. These factors can compromise its functionality.
Button Protection
Handle the key fob with care, avoiding dropping or pressing the buttons unnecessarily. This can prevent damage to the internal circuitry.
Signal Interference
Keep the key fob away from sources of strong electromagnetic fields, such as large metal objects or high-power electronic devices, which can disrupt its signal.
Emergency Mode
In case of a dead battery or key fob malfunction, use the mechanical key located inside the fob to manually unlock your Subaru.
Regular Inspection
Regularly check the key fob for any signs of damage, such as cracks, dents, or broken buttons. If any issues are noticed, contact a qualified mechanic or authorized Subaru dealer for assistance.
Software Updates
Some newer Subaru models may offer software updates for the key fob. Check with your local Subaru dealer for any available updates to enhance functionality.
Battery Replacement
Most Subaru key fobs utilize a CR2025 or CR2032 coin-cell battery. Consult the user manual for the specific battery type and follow the steps below for replacement:
| Step | Instructions |
|---|---|
| 1 | Locate the release button or latch on the key fob. |
| 2 | Press or slide the button to open the fob casing. |
| 3 | Identify the battery compartment and carefully remove the old battery. |
| 4 | Insert the new battery correctly, matching the positive (+) and negative (-) terminals. |
| 5 | Close the battery compartment and securely reattach the key fob casing. |
| 6 | Test the key fob to ensure it is functioning properly. |
How To Replace Subaru Key Fob Battery
The key fob battery is a small coin-shaped battery that powers the remote functions of your Subaru key fob. Over time, the battery will weaken and eventually need to be replaced. Replacing the battery is a simple process that can be done in a few minutes.
To replace the battery in your Subaru key fob, follow these steps:
- Locate the small screw on the back of the key fob.
- Use a small Phillips head screwdriver to remove the screw.
- Gently pull the two halves of the key fob apart.
- Remove the old battery from the key fob.
- Insert the new battery into the key fob, making sure that the positive (+) side of the battery is facing up.
- Put the two halves of the key fob back together.
- Tighten the screw to secure the two halves of the key fob.
People Also Ask About How To Replace Subaru Key Fob Battery
How do I know if my Subaru key fob battery needs to be replaced?
There are a few signs that your Subaru key fob battery may need to be replaced. These include:
- The key fob buttons are not working properly.
- The key fob has a reduced range.
- The key fob is not able to unlock or start the car.
What type of battery does my Subaru key fob use?
Subaru key fobs typically use a CR2025 coin-shaped battery.
Where can I buy a replacement battery for my Subaru key fob?
You can purchase a replacement battery for your Subaru key fob at most hardware stores, electronics stores, and online retailers.
How much does it cost to replace the battery in my Subaru key fob?
The cost of replacing the battery in your Subaru key fob will vary depending on the type of battery you purchase and the location where you purchase it. However, the cost is typically around $5 to $10.
