How to replace battery of Ford F-150 key fob

If you’re having range issues with your key fob, or if you are seeing warning message on the instrument cluster which reads “Key battery low replace soon”, or if it has completely stopped working, then its time to replace the battery in the key fob.

Note: You will need a new 3 volt coin type battery before following this guide.

Regular Key

The first step is to open the key blade by pressing the small round button on the key fob.

Insert a tool with flat tip (for example, a screwdriver) between the seam on the side of the remote.

Push while gently wiggling the tool to release the internal clips and then remove the cover.

Insert the tool by the side of the battery without touching any circuits and pull out the battery.

Install new battery, make sure the positive side is facing upward, and then put the cover back on.

Smart Key

Pull out the key blade while pushing the rectangular button.

Place a tool with wide flat end, you can also use a thin coin, and twist it inside the tab which got exposed after removing the key blade. Remove the cover as soon as it becomes loose.

Remove the battery by inserting a flat screwdriver to the side of the battery, make sure you don’t touch any circuitry as this may short it out and render your remote useless.

Insert the new 3v flat battery and put the cover back.


If you see any grease on the battery terminals or circuits, don’t wipe it off. This electrical grease prevents the development of oxides, sulfides and other corrosion deposits on the metals used in the circuitry of the remote.

Your keyless entry code will not reset after replacing the battery. So you can use your existing code to gain access to your vehicle by entering it on the keypad on the door.

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Margie Campbell
Margie Campbell
2 months ago

Thank you for the info!