FORD 2010 F-150 v.3 - Manual (Page 289)

6. Reinstall the steering column cover, start the vehicle and release the
parking brake.
Note: After the transmission is shifted to N (Neutral), it is easier to
reinstall the cover when the column is in the middle or lower tilt
position.
WARNING: Do not drive your vehicle until you verify that the
brakelamps are working.
WARNING: Always set the parking brake fully and make sure
the gearshift is latched in P (Park). Turn the ignition to the off
position and remove the key whenever you leave your vehicle.
WARNING: If the parking brake is fully released, but the brake
warning lamp remains illuminated, the brakes may not be
working properly. See your authorized dealer.
Brake-shift interlock – floor-shift transmission
This vehicle is equipped with a brake-shift interlock feature that prevents
the gearshift lever from being moved from P (Park) when the ignition is
in the on position unless the brake pedal is pressed.
If you cannot move the gearshift lever out of P (Park) with ignition in
the on position and the brake pedal pressed, it is possible that a fuse has
blown or the vehicle’s brake lamps are not operating properly. Refer to
Fuses and relays in the Roadside Emergencies chapter.
Driving
289
2010 F-150 (f12)
Owners Guide, 3rd Printing
USA (fus)