About

Key Fob Desk is an independent English guide to the coin cell inside a Ford key fob. The desk is not a dealer, not a locksmith shop, and not a parts counter. Nobody here sells keys, cuts blades, or programs immobilizers.

Ford Motor Company does not own, review, or sponsor these notes. Ford is a trademark of Ford Motor Company. Names of models and trims are used so a driver can match a shell, not to imply a partnership.

How to use the notes

Open the shell you actually have and read the code stamped on the cell. That stamp overrides every chart on this site. Charts say what a shell usually takes. A replacement fob, a different market, or a base trim can hold a different coin.

Most modern intelligent-access and push-button smart keys use a CR2032. Many newer smart keys, including many late F-150 and related trucks, use a CR2450. Older flip keys and remote heads are often CR2032, with a smaller group on CR2016 or CR2025. CR2450 is wider and thicker than CR2032. The two are not interchangeable.

What a battery visit is

A coin-only swap does not require programming. After the cover sits even, lock and unlock once from outside. If the smart key is too weak to be heard and you still have that fob, many Fords have a backup start mark on the column or in a slot. The page for that shell describes the usual pattern. It does not invent a programming sequence.

Panasonic, Murata, Energizer, and Duracell appear only as examples of primary lithium coin cells. They are not paid placements, and this site has no affiliate links.