How to Replace the Key Fob Battery in a Acura TL

Steps from the 2014 Acura TL owner's manual (models with the keyless access system).

Remove the built-in key from the remote.
Place a cloth on the edge of the remote to prevent scratches.
Carefully pry the edge with a coin to remove the upper half of the case.
Replace the old battery with a new CR2032 battery, placing it with the correct side facing up.
Snap the two halves of the remote case back together.

Battery type: CR2032.
The battery normally lasts about 2 years.
Replace it as soon as possible when the display shows 'CHANGE KEYLESS REMOTE BATTERY'.

Source: 2014 Acura TL owner's manual, PDF pages 187, 200. 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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