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How to Replace the Key Battery on the Ford F-150

Model: Ford F-150 MK 13 - Years 2015-2020
Part: Key

If the smart key for your 2019 Ford F-150 has suddenly stopped working, you may need to replace the button battery inside. Here's how to do it. First, get a common flathead screwdriver (preferably medium-small in size) and use it to remove the back cover. Once you have access to the dead battery, replace it with a new one. At this point, simply reassemble the back cover you removed earlier and test the smart key to ensure it works.

Updated on 16 May 2026 by ScegliAuto

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