Experiencing issues with your Subaru key fob can be frustrating, especially when it hinders your access to your vehicle. If you drive a Subaru Outback 2021 and are facing this problem, it’s highly likely that a simple battery replacement is all you need. Replacing the key fob battery in your Subaru Outback 2021 is a straightforward task you can easily handle yourself, saving you time and a trip to the dealership. While scheduling a service appointment is always an option, this guide will walk you through the simple steps to replace your Subaru Outback 2021 Key Fob Battery yourself.
Identifying Your Subaru Outback 2021 Key Fob Type
Subaru utilizes a few different key fob designs, and knowing which one you have is the first step to a smooth battery replacement. For the 2021 Subaru Outback, you’ll most commonly encounter the bulging rectangle-shaped key fob. However, to be completely sure, consulting your owner’s manual is always a good idea. Once you’ve identified your key fob, you can proceed with the corresponding battery replacement instructions.
Step-by-Step Subaru Outback 2021 Key Fob Battery Replacement
Let’s get into the process of replacing your Subaru Outback 2021 key fob battery. The procedure is quite similar across different Subaru key fob types, with minor variations in battery type and casing. Here’s how to replace the battery for the most common bulging rectangle shape, likely used for your 2021 Outback:
Replacing the Battery in a Bulging Rectangle Subaru Key Fob (2032 Battery)
This type of key fob, often used in newer Subaru models including the 2021 Outback, requires a CR2032 battery. Here’s how to replace it:
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Remove the Emergency Key: Locate the small silver tab on the rear of your Subaru Outback 2021 key fob. Press and hold this tab to release and remove the metal emergency key.
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Open the Key Fob Casing: After removing the emergency key, you’ll notice a seam running along the key fob. Carefully pry open the fob at this seam. A flathead screwdriver can be helpful here. Gently insert the screwdriver into the seam and twist to separate the two halves of the fob. Be careful not to apply excessive force to avoid damaging the casing.
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Locate and Remove the Old Battery: Once the fob is open, you’ll see the round, flat CR2032 battery. It might be positioned above or below the transmitter circuit board, depending on how you opened the fob. Carefully release the old battery from its housing. Note the orientation of the battery (positive side up) for correct installation of the new one.
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Insert the New Battery: Take your new CR2032 battery and place it into the battery compartment. Ensure the correct side is facing upwards (usually the positive side marked with a “+” symbol). Try to minimize touching the flat surfaces of the new battery with your fingers to avoid transferring oils, which could potentially reduce battery life.
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Reassemble the Key Fob: Carefully snap the two halves of your Subaru Outback 2021 key fob back together. They should click securely into place. Finally, slide the metal emergency key back into its slot until it clicks and locks.
Your Subaru Outback 2021 key fob battery replacement is now complete! Test the fob to ensure it’s working correctly by locking and unlocking your car remotely.
Replacing the Battery in a Teardrop Shape Subaru Key Fob (2025 Battery)
If your Subaru Outback 2021 (though less likely) uses an older, teardrop-shaped fob, the process is very similar. The main difference is that this older fob doesn’t have a removable emergency key. You’ll skip step 1 from the previous instructions and directly proceed to prying open the fob casing. Remember, this fob type uses a 2025 battery. Follow steps 2-5 from the bulging rectangle fob instructions, substituting the battery type as needed.
Replacing the Battery in an Exposed Metal Key with Buttons Subaru Key Fob (CR 1620 Battery)
For the oldest style of Subaru electronic key fob, which features a constantly visible metal key, the battery replacement is slightly different. This type uses a CR 1620 battery and involves opening two casings.
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Open the Exterior Casing: Follow step 2 from the bulging rectangle fob instructions to open the main, exterior casing of the fob.
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Open the Interior Casing: Inside the exterior casing, you’ll find a second, smaller casing. This interior casing has small tabs that you need to press to open it. Carefully locate and press these tabs to separate the two halves of the interior casing.
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Replace the Battery: Once the interior casing is open, remove the old CR 1620 battery and replace it with a new one, ensuring correct polarity.
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Reassemble Both Casings: Close the interior casing first, making sure it snaps shut securely. Then, place the interior casing back into the exterior casing and snap the exterior casing closed.
When Key Fob Battery Replacement Isn’t Enough
In most cases, replacing the battery will solve key fob issues. However, if you’ve replaced the battery and your Subaru Outback 2021 key fob still isn’t working, the problem might be more complex.
Key Fob Programming: Sometimes, after a battery replacement, or if you have a new key fob, it might need to be reprogrammed to communicate with your vehicle. While some older Subaru models allowed for DIY key fob programming, newer models, including the 2021 Outback, typically require professional programming at a dealership.
When to Seek Professional Help: If battery replacement doesn’t resolve the issue, or if you suspect a more significant problem with your key fob or vehicle’s receiver, it’s best to consult with a Subaru dealership like Subaru North Orlando or your local authorized service center. They have the expertise and equipment to diagnose and fix more complex key fob issues, including reprogramming or replacement.
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Replacing your Subaru Outback 2021 key fob battery is usually a quick and simple fix. By following these steps, you can regain full functionality of your key fob and get back on the road with confidence. If you encounter any difficulties or if the problem persists, don’t hesitate to seek professional assistance from your trusted Subaru service professionals.
