How to Replace the Key Fob Battery in a Ford EcoSport

Steps from the 2020 Ford EcoSport owner's manual (Intelligent access key).

Push the release button and pull the key blade out.
Twist a thin coin under the tab hidden behind the key blade head to remove the battery cover.
Replace the battery with a CR2450 coin-type three-volt lithium battery or equivalent.

Do not wipe off grease on the battery terminals or the back of the circuit board.
Replacing the battery does not erase the programmed key from the vehicle.
A message appears in the information display when the battery is low.

Source: 2020 Ford EcoSport owner's manual, PDF pages 57, 58. 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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