How to Replace the Key Fob Battery in a Lincoln MKC

1. Push the release button and pull the key blade out of the transmitter.
2. Twist a thin coin under the tab hidden behind the key blade head to remove the battery cover.
3. Insert a suitable tool such as a screwdriver at the position shown and carefully lever out the battery.
4. Install a new battery with the + facing upward.
5. Reinstall the battery cover and the key blade.

• Uses one coin-type three-volt lithium CR2450 battery or equivalent.
• Replacing the battery does not erase the programmed key.
• A message appears in the information display when the battery is low.

Source: 2017 Lincoln MKC 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.