2007 FORD SUPER DUTY Special Off-Road Package Supplement Manual

Note:If the vehicle does not slow down to below the programmed
speed limit, the tires will automatically inflate to the appropriate
higher terrain setting. Once the higher terrain setting has been
achieved, the OVERSPEED light will stop flashing and the buzzer will
stop.
²Solid:The CTIS is not receiving any speed signals.
5.CHECK TIRESFlashes and a buzzer activates when a low tire or a
significant air system leak is detected.
No display lights
²Power out of range
TERRAIN
Allows the driver to select different
tire pressures and vehicle
parameters for unique driving
surfaces/conditions by adjusting tire
pressure. Selecting a terrain setting
will cause the system to run a
pressure check and adjust tire
pressure appropriately. Any terrain
may be selected at any time (within
speed limitations).
Note:When in ªHYº mode,
additional increments do not change tire pressures, but do cause a
pressure check.
Note:When in ªEº mode, additional decrements do not change tire
pressures, but do cause a pressure check.
Tires, Wheels and Loading
25

Maximum
Speed -
mph
(km/h)Load Front Pressure Rear Pressure
Highway
65 (105) +
Unloaded*55 psi @ 2500 lbs 37 psi @1550 lbs
Maximum
Load57 psi @ 2600 lbs 65 psi @ 3195 lbs
Cross
Country30 (48)Unloaded*37 psi @ 2500 lbs 21 psi @ 1550 lbs
Maximum
Load40 psi @ 2600 lbs 35 psi @ 3195 lbs
Mud,
Sand and
Snow10 (16)Unloaded*24 psi @ 2500 lbs 15 psi @ 1550 lbs
Maximum
Load27 psi @ 2600 lbs 29 psi @ 3195 lbs
Emergency
5 (8)Unloaded*
17 psi @ 2500 lbs 12 psi @ 1550 lbs
Maximum
Load20 psi @ 2600 lbs 23 psi @ 3195 lbs
* Under 800 lbs (363 kg) people plus cargo
LOAD
Allows the driver to select loaded or
unloaded tire pressures under
specified conditions. Selecting the
load setting will cause the system to
run a pressure check and adjust tire
pressure appropriately. The LOAD
setting can be changed any time
(within specified speed/load
limitations).
Automatic load sensing
²Vehicle load condition will be automatically sensed and tire pressure
adjusted, if necessary, when starting the engine and when the vehicle
is at a complete stop.
²Unloaded/Loaded tire pressures are available for each terrain
selection.
²Anytime the load can't be accurately sensed, the system will default to
the loaded tire pressure.
²Load settings are indicated by the bar graph on the DDM.
Tires, Wheels and Loading
26

Tire pressure maintenance
The CTIS is set to check tire pressure every 15 minutes. The wheel
valves will automatically isolate the tires from the rest of the system; this
prevents a decrease in tire pressure due to fitting and seal leaks.
Some clicking may be heard as the system activates to achieve a new tire
pressure. Adequate supply system air pressure is required to begin or
continue any pressure change.
The system is designed to allow tire pressure increases due to heat
build-up during vehicle use. The system will not deflate the pressure
build-ups, a lower pressure mode selection must be made to decrease
the tire pressure.
Flat tire/Tire leak detection
If the CTIS detects a significantly low tire, the system will display a
ªCHECK TIREº message, sound a buzzer and automatically attempt to
inflate the tire(s) to the selected mode pressure. The ªCHECK TIREº
message and buzzer will stay on until the tire is inflated to the selected
mode pressure.
Tires, Wheels and Loading
27

CHANGING A FLAT TIRE
Refer to yourOwner's Guidefor the tire changing procedure. Follow the
F-350 Dual Rear Wheel (DRW) jacking instructions.
FUSING
Note:Fuse 29 in the instrument panel box, located below and to the left
of the steering wheel, should be a 15A mini fuse. Always replace the fuse
you removed with a fuse with the same amperage rating.
Roadside emergencies
28