How to Replace the Key Fob Battery in a Acura RL

1. Remove the built-in key from the remote.
2. Place a cloth on the edge of the remote to prevent scratches.
3. Carefully pry on the edge with a coin to remove the upper half of the case.
4. Replace the old batteries with new CR2025 batteries, placing them with the correct side facing up.
5. Snap the two halves of the remote case back together.

• Battery type: CR2025.
• Replace the batteries when the display shows 'KEYLESS REMOTE LOW BATTERY'.
• Batteries normally last about 2 years.

Source: 2012 Acura RL owner's manual, PDF pages 181, 186. 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.