How to Replace the Key Fob Battery in a Chevrolet Impala

1. Press the button on the RKE transmitter to extend the key blade.
2. Pry off the battery cover with a finger.
3. Push on the battery and slide it toward the key blade to remove it.
4. Insert the new CR2032 or equivalent battery with the positive side facing up and push it down until held.
5. Snap the battery cover back onto the transmitter.

• Do not touch any circuitry on the transmitter, since static could damage it.
• The battery is not rechargeable; replace it when the DIC indicates battery replacement is necessary.

Source: 2020 Chevrolet Impala owner's manual, PDF pages 15, 14. 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.