How do you check automatic transmission fluid in 2009 Ford F 150?

To check the automatic Transmission Fluid in a 2009 Ford F-150, first ensure the engine is running and the vehicle is parked on a level surface. Locate the transmission dipstick, usually found near the back of the engine, and pull it out. Wipe it clean, reinsert it fully, and then remove it again to check the fluid level, which should be between the "Full" and "Add" marks. If necessary, add the appropriate transmission fluid through the dipstick tube.