How to Replace the Key Fob Battery in a Ford F-250 / F-350 / F-450 / F-550 Super Duty

1. Press the release button and pull the key blade out of the transmitter.
2. Insert a suitable tool such as a screwdriver in the position shown and gently push the clip.
3. Press the clip down to release the battery cover.
4. Carefully remove the cover without touching the contacts or circuit board with the screwdriver.
5. Insert a tool in the position shown to release the battery, then remove the battery.
6. Insert a new battery with the + facing upward.
7. Reinstall the battery housing cover onto the transmitter.

• Uses one coin-type three-volt lithium CR2032 or equivalent; the Intelligent Access Key uses a CR2450.
• Replacing the battery does not erase the programmed key from the vehicle.
• Do not wipe grease off the battery terminals or the back of the circuit board.

Source: 2020 Ford F-250 / F-350 / F-450 / F-550 Super Duty owner's manual, PDF pages 58, 59. 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.