How to Replace the Key Fob Battery in a Acura TLX

Steps from the 2025 Acura TLX owner's manual (Models with and without two-way keyless remote).

Remove the built-in key from the remote.
Pry on the edge of the cover with a flat-tip screwdriver to remove the cover.
Wrap the screwdriver with a cloth to prevent scratches.
Replace the battery, making sure the polarity is correct.

Battery type: CR2032.
Replace the battery if the indicator does not come on when the button is pressed.
Two-way keyless remote also has a non-replaceable rechargeable battery; replace the CR2032 every three to four years.

Source: 2025 Acura TLX owner's manual, PDF pages 583, 584. 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.

Confirm with your own manual, dipstick or door-jamb label.
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