Two key styles on one vehicle
Many US models ship (or offer) more than one transmitter style. Manuals often put separate battery procedures under Intelligent Access / Smart Entry / push-button start versus Integrated Keyhead / flip key / Master remote.
Those sections can name different CR codes. Choosing the wrong style is a common miss — even when the year is correct.
Smart / push-button (examples)
Honda Smart Entry / keyless remotes commonly specify CR2032.
Ford Intelligent Access / push-button keys on later F-150, Escape, and Explorer years often specify CR2450 (earlier F-150 IA used two CR2025).
Toyota “vehicles with a smart key system” lines can be CR2032 or CR2450 depending on model and year — confirm in the finder.
Remote / flip / keyed (examples)
Honda Master / screw-cover remotes often specify CR1620 — not the Smart Entry CR2032.
Ford Integrated Keyhead / keyed transmitters commonly specify CR2032 alongside a different IA cell on the same truck.
Toyota “without a smart key system” remotes may be CR2016 on older years and CR2032 on later ones.
How to tell which you hold
Push-button start with a proximity fob (no blade needed for everyday start) usually matches the smart / IA path.
A mechanical blade that folds out, or a remote head on a conventional key, usually matches the remote / flip / keyed path.
When both are offered for your year, the finder asks you to pick — “Show both” if you’re unsure.
Quick takeaway
Same VIN year can still need two cells. Match key style before you buy.