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MINI Cooper Key Fob Battery Replacement Guide
How to change a dead battery in the key fob remote control for a 3rd generation 2014 to 2010 MINI Cooper hatch.

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2019 MINI Key Fob
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Back Side of Fob
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Chrome Silver Button
This automotive maintenance tutorial was specifically written to assist owners of the third generation (2014, 2015, 2016, 2017, 2018, 2019 and 2020) MINI Cooper in changing a weak or dead battery in the key fob remote control for the keyless entry and push button start systems.

Owners of other MINI models or some smaller BMW vehicles such as the Cooper S, "JCW" John Cooper Works, Convertible, Hatch, Clubman, One, One First, One D, Coupe, Roadster, Countryman, Paceman, 3 Series, 318i, 328i, 320i, 323i, 325i, 330i, 340i, 230i, M240i, M2, M3, M4, i3, 228i, 230i, 128i, 135i, Z3, Z4 and Z8 may also find these DIY instructions to be helpful.

The compatible replacement coin cell (also known as a "button" or "watch") type battery part number is CR2032.

The tools needed to access and replace the key fob battery include a flathead screwdriver or a plastic pry bar tool.



 

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Push In Silver Button
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Slide Out Ignition Key
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Metal Key Removed
The first step is to push in the chrome silver button on the right side of the fob.

Slide the emergency / backup metal ignition key out of the slot in the fob.

Set the key aside in a safe place.

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Insert Flathead Screwdriver
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Gently Pry Off Rear Cover
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Back Cover Removed
Turn over the fob so that the MINI logo is facing down on the table. The rear of the fob should be pointing up towards you.

Insert the blade of your flathead screwdriver or a plastic pry bar tool into the opening just above the slot where the metal ignition key used to reside.

Gently pry the rear cover by lifting the screwdriver blade or slightly twisting it.

Try to avoid using excessive force. The back cover should pop off relatively easily.

Set the cover aside in a safe place.

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Interior Battery Cover
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Insert Screwdriver
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Pull Off Battery Cover
There is a secondary round black plastic cover.

Insert the blade of the screwdriver into the small notch on the battery cover and gently pry it off.

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Old Battery Exposed
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Pry Out Old Battery
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Old Battery Removed
Set the battery cover aside in a safe place.

Gently pry out the old battery from the socket with the screwdriver.

You could also turn over the fob and gently tap it on the table until the old battery falls out of the holder.



 

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Panasonic CR 2032 3V
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Key Fob Disassembled
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Line Up New Battery
The OEM battery in the fob for this 2019 MINI Hatch was a Panasonic CR2032 3V coin cell.

Orientate the new CR2032 battery with the positive "+" side facing up towards you and the negative "-" side facing down towards the table.

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Push In New Battery
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Line Up Battery Cover
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Snap Cover In Place
Push the new battery into the socket.

Make sure the new battery is fully seated.

Pop the battery cover back into place.

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Line Up Fob Rear Cover
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Snap Cover In Place
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Replace Metal Key
Line up the back cover of the fob over the battery access compartment.

Gently pop the back cover into place.

Make sure that the cover is flush with the rest of the fob at every edge.

Slide the metal ignition key back into the slot.

You should hear or feel the key "click" securely into place.

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Key Fob Re-Assembled
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Stand Near MINI
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Test New Fob Battery
To test the new battery, stand near your MINI and press the "Unlock" or "Lock" buttons.

If the new battery is working properly, you should see the parking lights flash and also hear the door locks opening or closing.

The fob shouldn't need to be reprogrammed. Just changing the battery shouldn't clear the original programming.

Be sure to record the battery change in your vehicle's service records.

For more, check out all of my MINI Cooper DIY Repair & Maintenance Guides.
 

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