How to Replace the Key Fob Battery in a Chevrolet Impala Limited

1. Pry the transmitter apart with a thin flat object such as a flat head screwdriver, inserting it into the notch along the parting line.
2. Stop pushing the tool in as soon as you feel resistance, then twist it until the transmitter separates.
3. Take out the old battery without using a metal object.
4. Put in the new CR2032 or equivalent battery with the positive side facing down.
5. Snap the transmitter back together.

• Replace the battery when the REPLACE BATTERY IN REMOTE KEY message shows in the DIC.
• Do not touch the circuitry on the transmitter, because static from your body could damage it.

Source: 2016 Chevrolet Impala Limited owner's manual, PDF page 28. 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.