It couldn't be easier to disable auto start/stop on your Ford F-150. This intelligent device eliminates the need to press the button to turn off auto start/stop after each ignition cycle by automatically remembering and restoring your preference.
The Autostop Eliminator for the 2021 F150 plugs into the back of the auto start/stop switch assembly. Installation is easy and only takes a few minutes!
F150 Auto Start Stop Disable
From Autostop Eliminator