How to Replace the Key Fob Battery in a Hyundai Palisade

Steps from the 2026 Hyundai Palisade owner's manual (Smart key).

Insert a slim tool into the slot on the smart key and gently open the rear cover.
Remove the old battery.
Insert a new CR2450 battery, making sure it is positioned correctly.
Reinstall the rear cover of the smart key.

Battery type: CR2450.
An improperly positioned battery may discharge and cause smart key failure.
Button battery can cause severe or fatal injuries if swallowed; keep it away from children.

Source: 2026 Hyundai Palisade owner's manual, PDF page 153. 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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