Ford F-150 Owner's Manual page 151

In order to prevent the engine from running
at too low an RPM, which may cause it to
stall, SelectShift will still automatically
make some downshifts if it has determined
that you have not downshifted in time.
Although SelectShift will make some
downshifts for you, it will still allow you to
downshift at any time as long as the
SelectShift determines that the engine will
not be damaged from over-revving.
SelectShift will not automatically upshift,
even if the engine is approaching the RPM
limit. It must be shifted manually by
pressing the + button.
Note: Engine damage may occur if
excessive engine revving is held without
shifting.
PRS (Progressive Range Selection)
With the gearshift lever in D (Drive), press
the – button to active PRS. The available
and selected gears will be indicated on the
instrument cluster.
All available gears will be displayed with
the current gear indicated. Press the –
button again to lock out gears beginning
with the highest gear. Example: press the
– button twice to lock out 6th and 5th
gears. Only the available gears will be
displayed and the transmission will
automatically shift between the available
gears. Press the + button to unlock gears
to allow the transmission to shift to higher
gears. The transmission will shift
automatically within the gear range you
select.
Automatic Transmission Adaptive
Learning
This feature is designed to increase
durability and provide consistent shift feel
over the life of the vehicle. A new vehicle
or transmission may have firm shifts, soft
shifts or both. This operation is considered
normal and will not affect function or
F150 (TF6) , enUSA
Transmission
durability of the transmission. Over time,
the adaptive learning process will fully
update transmission operation.
Additionally, whenever the battery is
disconnected or a new battery installed,
the strategy must be relearned.
Brake-Shift Interlock
Do not drive your vehicle until you
verify that the brake lamps are
working.
When doing this procedure, you will
be taking the vehicle out of park
which means the vehicle can roll
freely. To avoid unwanted vehicle
movement, always fully set the parking
brake prior to doing this procedure. Use
wheel chocks if appropriate.
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.
Your 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 and the brake pedal is not pressed.
If you cannot move the gearshift lever out
of P (Park) position with the ignition in the
on position and the brake pedal pressed,
a malfunction may have occurred. It is
possible that a fuse has blown or the
vehicle's brake lamps are not operating
properly. See Fuse Specification Chart
(page 224).
If the fuse is not blown and the brake
lamps are working properly, the following
procedure will allow you to move the
gearshift lever from P (Park):
148
WARNINGS