Subaru Legacy 2009 Key Fob Battery Replacement

Introduction

At some point during your driving experience, your key fob battery is bound to run out, necessitating a replacement. If you experience dim LED light, weak signal, and requires multiple clicks to function, or not functioning at all, it is likely due to a drained battery. The lifespan of the battery should typically range from 3 to 5 years, depending on usage patterns and environmental factors.

The key in use belongs to a 2009 Subaru Legacy, and I believe Subaru Legacy and Outback models from 2010 to 2014 also make use of the same key. Prior to initiating the process, ensure that your key fob corresponds to this specific model. The model information is imprinted on the case beneath the Subaru emblem where the screw reside.

FCC ID: CWTWBU766

IC: 1788D-FWBU766

What you need

Step 1 Key Fob Battery

Subaru Legacy 2009 Key Fob Battery Replacement, Key Fob Battery: step 1, image 1 of 2

Subaru Legacy 2009 Key Fob Battery Replacement, Key Fob Battery: step 1, image 2 of 2

Use a Phillips #00 screwdriver to remove a 5.0 mm screw from the base of the key fob.

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Step 2

Place the flat end of a spudger into the gap between the key blank (metal part) and the case.
Gently pry upward to separate the housing.

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Step 3

Once the case comes apart, turn the key upside down, and the keyless fob should easily come out.

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Step 4

Subaru Legacy 2009 Key Fob Battery Replacement: step 4, image 3 of 3

Use a spudger or your fingernails to pry open the four clips securing the keyless fob.
Ensure that you pinch the fob on the side, not the top, during the opening to avoid accidentally re-securing the clips.

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