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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

Step 1 Battery

Subaru Smart Key Fob Model 14AHK Battery Replacement, Battery: step 1, image 1 of 2

Subaru Smart Key Fob Model 14AHK Battery Replacement, Battery: step 1, image 2 of 2

Press the silver button on the back of the key fob.
While pressing the silver key, pull out the physical key.

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Step 2

Use the physical key to pry and twist the back cover off.
Use gentle pressure to avoid breaking the back cover.

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Step 3

Remove the control board from the key fob.
Keep in mind the direction of the control board as it needs to be reassembled in the same direction.

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Step 4

Use a plastic pry tool to lift the battery out of place.
Remove the old battery.
Use gentle pressure here to avoid breaking the clips that hold the battery in place.