Introduction
If your Subaru key fob model 14AHK (printed on the back of the fob) is not unlocking, locking, or starting the car, it may need a new battery. Your vehicle may also display a low key fob battery warning message.
The Subaru smart key fob model 14AHK is compatible with many modern Subaru vehicles equipped with push-to-start ignition systems. Some Subaru models from 2014–2018 use a similar-looking key fob (FCC ID: HYQ14AHC), but it operates on a different frequency. Be sure to confirm your key fob model before purchasing a replacement battery.
This guide explains how to replace the battery yourself. You will need a CR2032 battery and a plastic pry tool to complete the replacement.
Dispose of the old battery properly at a battery recycling center or an approved battery drop-off location.
What you need
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Press the silver button on the back of the key fob.
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While pressing the silver key, pull out the physical key.
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Use a plastic pry tool to lift the battery out of place.
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Remove the old battery.
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Insert the new battery at an angle.
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Press down on the raised side of the battery until it snaps into place.
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Reinstall the control board into the key fob with the same orientation as before.
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Align the back cover and press firmly around the edges to secure it in place.
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Test the key fob by pressing a button and looking for a red light to light up in the top left corner.
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