Upshifts when accelerating (recommended for best fuel economy)
Diesel enginesGasoline enginesShift from:
12 mph (19 km/h)15 mph (24 km/h)1 – 2
19 mph (31 km/h)25 mph (40 km/h)2 – 3
26 mph (42 km/h)40 mph (64 km/h)3 – 4
34 mph (55 km/h)45 mph (72 km/h)4 – 5
46 mph (74 km/h)50 mph (80 km/h)5 – 6
Automatic Transmission Adaptive
Learning
This feature's design is to increase
durability and provide consistent shift feel
over the life of your vehicle. A new vehicle
or transmission may have firm shifts, soft
shifts or both. This operation is normal and
does not affect function or durability of the
transmission. Over time, the adaptive
learning process fully updates transmission
operation. Additionally, whenever you
disconnect the battery or install a new
battery, the system must relearn the
strategy.
Brake-Shift Interlock
WARNINGS
Do not drive your vehicle until you
verify that the brake lamps are
working.
When doing this procedure, you will
be taking your vehicle out of park
which means your 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.
WARNINGS
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 moving from park (P)
when the ignition is in the 3 (on) position
and the brake pedal is not pressed.
If you cannot move the gearshift lever out
of park (P) position with the ignition in the
4 (on) position and the brake pedal
pressed, a malfunction may have occurred.
It is possible that a fuse has blown or your
vehicle’s brake lamps are not operating
properly. See Fuse Specification Chart
(page 223).
If the fuse is not blown and the brake
lamps are working properly, the following
procedure allows you to move the gearshift
lever from park (P):
1. Apply the parking brake. Switch the
ignition key to 1 (off), then remove the
key.
2. Move the steering column to the full
down and full rearward position
(toward the driver’s seat).
3. Remove the gearshift lever boot.
155
Super Duty (TFA) Canada/United States of America, enUSA, First Printing
Transmission
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