Vauxhall Corsa Key Fob Battery Replacement (2014-2019): Step-by-Step Guide

If you own a Vauxhall Corsa built between 2014 and 2019 and your key fob has stopped working—or only works intermittently—it’s likely that the battery is dead. Fortunately, changing it is simple. With a small screwdriver, a CR2032 coin cell, and a few minutes of your time, you can get your key working again without visiting a dealership.
In this article, we’ll show you how to replace the battery, what tools you need, and the most common mistakes to avoid during the process.

Why Does the Corsa Key Fob Battery Die?

Frequent Use and Natural Degradation

Every time you press a button, the fob activates a small electronic circuit that draws power. Even when not used, the battery discharges gradually over time due to internal resistance and aging. Eventually, it loses the ability to power the circuit effectively.

Environmental Conditions

Extreme temperatures—both cold and heat—accelerate battery discharge. If you usually park your car outdoors, the CR2032 cell may wear out faster than expected.

Other Contributing Factors

Sometimes the fob stops working not only because of the battery but also due to dirty contacts, oxidation, or physical damage to the casing that prevents proper contact. When replacing the battery, it’s a good idea to inspect the whole fob.

What You’ll Need for the Battery Replacement

Tools and Materials

• Small flat-head screwdriver (for prying open the case)
• New CR2032 battery (preferably from a reliable brand)
• Soft cloth to clean the case and battery contacts

Check Compatibility

Make sure your fob belongs to a 2014-2019 Vauxhall Corsa model and uses a CR2032 coin cell. Most versions during this period use this exact type.

Safety Tips

• Keep your hands clean to avoid leaving grease or dust on the contacts.
• Remove the old battery carefully to avoid bending the metal clips.
• Avoid touching the new battery’s surface directly with your fingers, as oils can reduce its lifespan.

Step-by-Step Battery Replacement

Step 1 – Open the Key Fob

Insert the flat-head screwdriver into the slot at the back of the key fob and gently twist until the casing separates.

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Step 2 – Remove the Old Battery

Take out the old battery and note its orientation. The positive side (“+”) is usually facing up.

H2: Step 3 – Insert the New Battery

Place the new CR2032 into the same slot, ensuring the orientation is correct. You should hear or feel a small “click” when it snaps into position.

Step 4 – Close the Case

Snap the case halves back together by pressing firmly until you hear a click and the key fob looks intact again.

Step 5 – Test the Key Fob

Press the buttons to check if the car responds properly. If not, double-check the battery placement and clean the contacts again if needed.

Useful Tips and Common Mistakes

Tip: Keep a Spare CR2032 Battery

They’re inexpensive and easy to store. Having a spare on hand can save you the hassle of being locked out unexpectedly.

Common Mistake: Forcing the Case

If the case doesn’t close properly, don’t apply too much pressure. Check for misaligned tabs or parts blocking closure.

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Common Mistake: Reversing the Polarity

Installing the battery upside-down prevents the fob from working and can temporarily damage the circuit.

Tip: Clean the Contacts

Use a dry cloth or cotton swab to remove any dirt or residue. Clean contacts ensure better conductivity.

Tip: Recycle the Old Battery Properly

Used CR2032 cells should be disposed of at designated recycling points, not in regular household bins.

What If It Still Doesn’t Work After Replacement?

Check the Fuse and Signal

If your fob still doesn’t work, there might be a blown fuse or an issue with the central locking receiver.

Re-Synchronize the Key Fob

Some Corsa models may require key re-syncing after a battery change. Check your owner’s manual for the pairing procedure.

Inspect for Physical Damage

If buttons feel mushy or the casing is cracked, you might need a replacement key fob rather than just a new battery.

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Conclusion

Replacing the key fob battery on a 2014-2019 Vauxhall Corsa is quick, inexpensive, and easy to do yourself. With a CR2032 cell, a small screwdriver, and a few minutes, you can restore full functionality without professional help. Follow the steps above, take basic precautions, and you’ll have your key fob working like new again.

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