How to Replace the Key Fob Battery in a Ford Taurus

1. Intelligent access key: slide the release on the back and pull out the key blade.
2. Twist a thin coin under the tab hidden behind the key blade head to remove the battery cover.
3. Remove the old battery.
4. Insert a new CR2032 battery with the + facing downward and press it fully into the housing.
5. Reinstall the battery cover and the key blade.

• Do not use the key blade to pry off the cover, as it could be damaged.
• For the integrated keyhead transmitter, twist a coin in the slot near the key ring, and insert the battery with the + facing upward.
• Replacing the battery does not erase the programmed key.

Source: 2019 Ford Taurus owner's manual, PDF pages 50, 51. 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.