Ford F-650/750 (2018 year). Manual — part 33

ESC Usage with Tractor/Trailer

The ESC system is designed to work with
trailer air brake systems. We do not
recommend its use with any other trailer
brake system.

Chassis Modifications

Stability Control is specifically calibrated
and validated only for your vehicle's
original configuration. If you alter your
vehicle's chassis components, for example,
a wheel base extension or reduction, tag
axle addition or removal, a major body
change such as conversion of a tractor into
a truck. Ford Motor Company is not
responsible for the performance of the
stability control system if you modify any
major components such as axle,
suspension or steering system.

(If Equipped)

PRINCIPLE OF OPERATION

Cruise control lets you maintain a set
speed without keeping your foot on the
accelerator pedal. You can use cruise
control when your vehicle speed is greater
than 20 mph (30 km/h).

USING CRUISE CONTROL

(If

Equipped)

WARNINGS

Do not use cruise control on winding
roads, in heavy traffic or when the
road surface is slippery. This could

result in loss of vehicle control, serious
injury or death.

When you are going downhill, your
vehicle speed could increase above
the set speed. The system does not

apply the brakes.

Note: Cruise control disengages if the
vehicle speed decreases more than 10 mph
(16 km/h) below the set speed when driving
uphill.

E210985

The cruise controls are on the steering
wheel.

Switching Cruise Control On

Press ON.

E71340

The indicator displays in the
instrument cluster.

Setting the Cruise Speed

1.

Drive to desired speed.

2. Press SET+ or SET-.

3. Take your foot off the accelerator

pedal.

Changing the Set Speed

•

Press SET+ or SET- to change the set
speed in small increments.

•

Press the accelerator or brake pedal
until you reach the desired speed. Press
SET+ or SET-.

•

Press and hold SET+ or SET-. Release
the control when you reach the desired
speed.

Canceling the Set Speed

Press CNCL or tap the brake pedal. The
set speed does not erase.

Resuming the Set Speed

Press RSM.

Switching Cruise Control Off

Note: You erase the set speed when you
switch the system off.

Press OFF when the system is in standby
mode, or switch the ignition off.

STEERING

To help prevent damage to the power
steering system:
•

Never hold the steering wheel at its
furthest turning points (until it stops)
for more than three to five seconds
when the engine is running.

•

Do not operate the vehicle with a low
power steering pump fluid level (below
the MIN mark on the reservoir).

•

Some noise is normal during operation.
If excessive, check for low power
steering pump fluid level before
seeking service by your dealer.

•

Heavy or uneven efforts may be caused
by low power steering fluid. Check for
low power steering pump fluid level
before seeking service by your dealer.

•

Do not fill the power steering pump
reservoir above the MAX mark on the
reservoir, as this may result in leaks
from the reservoir.

If the power steering system breaks down
(or if the engine is turned off), you can
steer the vehicle manually, but it takes
more effort.

Operating the steering system excessively
at an elevated engine RPM (>1200 rpm)
for more than 2 minutes can result in
steering system damage from overheating.
Move the steering wheel to the full left
position then full right position at idle
speed, or stop using the system for 2
minutes to allow the system to cool down.

If the power steering system exhibits heavy
or uneven efforts, check for the following
before seeking service from your dealer:
•

An improperly inflated tire.

•

Overloading of front suspension.

•

Uneven vehicle loading.

•

Binding suspension components.

If the power steering system wanders or
pulls, check for:
•

An improperly inflated tire.

•

Uneven vehicle loading.

•

Uneven tire wear.

•

Loose or worn suspension
components.

•

Loose or worn steering components.

•

Improper vehicle alignment.

•

High crosswinds.

If any steering components are serviced or
replaced, install new fasteners (many are
coated with thread adhesive or have
prevailing torque features which may not
be re-used). Never re-use a bolt or nut.
Torque fasteners to specifications.

A high crown in the road or high crosswinds
may also make the steering seem to
wander or pull.