How to Replace the Key Fob Battery in a Ford Fiesta

Steps from the 2019 Ford Fiesta owner's manual (vehicles without Intelligent Access (remote control with key blade); other transmitter types are also covered).

Insert a screwdriver into the recess on the back of the key and remove the key blade.
Release the retaining clips with the screwdriver and separate the two halves of the remote control.
Carefully pry out the old battery with the screwdriver, without touching the contacts or circuit board.
Install a new 3V CR 2032 battery with the + facing upward.
Assemble the two halves of the remote control.
Install the key blade.

The remote uses one coin-type three-volt lithium battery CR2032 or equivalent.
Replacing the battery will not delete the transmitter from the vehicle.
Integrated keyhead and Intelligent Access transmitters have separate steps on the following page.

Source: 2019 Ford Fiesta owner's manual, PDF pages 52, 53. Steps are summarized in our own words (AI-assisted, checked against the cited pages 2026-10-18). Other model years can differ; your manual has the final word.

Confirm with your own manual, dipstick or door-jamb label.
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