MAINTENANCE / OWNER GUIDE
2015 Ford F-150 Key Fob Battery Guide
First identify which remote style your truck uses.
Different key and intelligent-access arrangements may use different opening procedures. Confirm the cell size and polarity from the manual or existing battery.
What to know
Use care opening the casing to avoid damaging clips or seals.
What I'd check next
If a new battery does not fix the problem, compare with the spare remote and check vehicle-side issues.
Official information
Start with the Ford owner manual and Ford's 2015 technical specifications. For recall-related questions, use Ford's VIN recall checker. Published specifications may differ by configuration, market and equipment.
I own a 2015 Ford F-150 and plan to add real observations, photos and maintenance notes to these guides. I won't present an untested repair as something I've personally done.