Ford Expedition (2018 year). Manual — part 61

Steering Tips

If the steering wanders or pulls, check for:
•

Correct tire pressures.

•

Uneven tire wear.

•

Loose or worn suspension
components.

•

Loose or worn steering components.

•

Improper vehicle alignment.

Note:

A high crown in the road or high

crosswinds may also make the steering
seem to wander or pull.

Adaptive Learning

The electronic power steering system
adaptive learning helps correct road
irregularities and improves overall handling
and steering feel. It communicates with
the brake system to help operate
advanced stability control and accident
avoidance systems. Additionally, whenever
the battery is disconnected or a new
battery installed, you must drive your
vehicle a short distance before the system
relearns the strategy and reactivates all
systems.

PRE-COLLISION ASSIST

(If

Equipped)

WARNINGS

At all times, you are responsible for
controlling your vehicle, supervising
the system and intervening, if

required. Failure to take care may result in
the loss of control of your vehicle, serious
personal injury or death.

The system does not detect vehicles
that are driving in a different
direction, cyclists or animals. Failure

to take care may result in the loss of
control of your vehicle, serious personal
injury or death.

WARNINGS

The system does not operate during
hard acceleration or steering. Failure
to take care may lead to a crash or

personal injury.

The system may fail or operate with
reduced function during cold and
severe weather conditions. Snow,

ice, rain, spray and fog can adversely affect
the system. Keep the front camera and
radar free of snow and ice. Failure to take
care may result in the loss of control of
your vehicle, serious personal injury or
death.

In situations where the vehicle
camera has limited detection
capability, this may reduce system

performance. These situations include but
are not limited to direct or low sunlight,
vehicles at night without tail lights,
unconventional vehicle types, pedestrians
with complex backgrounds, running
pedestrians, partly obscured pedestrians,
or pedestrians that the system cannot
distinguish from a group. Failure to take
care may result in the loss of control of
your vehicle, serious personal injury or
death.

The system cannot help prevent all
crashes. Do not rely on this system
to replace driver judgment and the

need to maintain a safe distance and
speed.

Using Pre-Collision Assist

The Pre-Collision Assist system is active
at speeds above approximately 3 mph
(5 km/h) and pedestrian detection is active
at speeds up to 50 mph (80 km/h).

E156130

If your vehicle is rapidly approaching
another stationary vehicle, a vehicle
traveling in the same direction as yours, or
a pedestrian within your driving path, the
system is designed to provide three levels
of functionality:

1.

Alert

2. Brake Support

3. Active Braking

Alert

: When activated, it provides a

flashing visual warning and an audible
warning sound.

Brake Support

: Assists the driver in

reducing collision speed by preparing the
brake system for rapid braking. Brake
support does not automatically activate
the brakes, but if you press the brake pedal
even lightly, brake support can add
additional braking up to full force.

Active Braking

: Active braking may

activate if the system determines that a
collision is imminent. The system may help
the driver reduce impact damage or avoid
the crash completely.

Note:

If you perceive Pre-Collision Assist

alerts as being too frequent or disturbing,
then you can reduce the alert sensitivity,
though the manufacturer recommends
using the highest sensitivity setting where
possible. Setting lower sensitivity would
lead to fewer and later system warnings.

Note:

The Pre-Collision Assist system

automatically disables when you select 4X4
LOW or when you manually disable
AdvanceTrac™.

Distance Indication and Alert

Distance Indication and Alert is a function
that provides you with a graphical
indication of the time gap to other
preceding vehicles traveling in the same
direction. The Distance Indication and Alert
screen in the information display shows
one of the following graphics.

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If the time gap to a preceding vehicle is
small, a red visual indication displays.

Note:

Distance Indication and Alert

deactivates and the graphics do not display
when adaptive cruise control is active.

Time Gap

Distance Gap

Graphics

Sensitivity

Speed

>0.9sec

>82 ft (25 m)

Grey

Normal

62 mph

(100 km/h)

between

0.6sec and

0.9sec

56–82 ft

(17–25 m)

Yellow

Normal

62 mph

(100 km/h)

<0.6sec

<56 ft (17 m)

Red

Normal

62 mph

(100 km/h)

Adjusting the Pre-Collision Assist
Settings

You can adjust the Alert and Distance Alert
sensitivity to one of three possible settings
by using the information display control.
See General Information (page 109).

You can switch the Distance Indication and
Alert function off using the information
display controls. See General
Information

(page 109).

If required, you can switch active braking
off using the information display controls.
See General Information (page 109).

If required, you can turn the entire
Pre-Collision Assist feature off using the
information display controls. See General
Information

(page 109).

Note:

We recommended that you turn the

system off if you install a snow plow or
similar object in such a way that it may
block the radar sensor. Your vehicle
remembers the selected setting across key
cycles.

Blocked Sensors

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If a message regarding a blocked sensor
or camera appears in the information
display, the radar signals or camera images
are obstructed. The radar sensor is behind
a fascia cover near the driver side of the
lower grille. With an obstructed radar, the
Pre-Collision Assist system does not
function and cannot detect a vehicle
ahead. With the front camera obstructed,

the Pre-Collision Assist system does not
respond to pedestrians or stationary
vehicles and the system performance on

moving vehicles reduces. The following
table lists possible causes and actions for
when this message displays.

Action

Cause

Clean the grille surface in front of the radar

or remove the object causing the obstruc-

tion.

The surface of the radar in the grille is dirty

or obstructed in some way.

Wait a short time. It may take several

minutes for the radar to detect that there

is no obstruction.

The surface of the radar in the grille is clean

but the message remains in the display.

The Pre-Collision Assist system is tempor-

arily disabled. Pre-Collision Assist should

automatically reactivate a short time after

the weather conditions improve.

Heavy rain, spray, snow, or fog is interfering

with the radar signals.

The Pre-Collision Assist system is tempor-

arily disabled. Pre-Collision Assist should

automatically reactivate a short time after

the weather conditions improve.

Swirling water, or snow or ice on the surface

of the road may interfere with the radar

signals.

Contact an authorized dealer to have the

radar checked for proper coverage and

operation.

Radar is out of alignment due to a front end

impact.

Clean the outside of the windshield in front

of the camera.

The windshield in front of the camera is

dirty or obstructed in some way.

Wait a short time. It may take several

minutes for the camera to detect that there

is no obstruction.

The windshield in front of the camera is

clean but the message remains in the

display.

Note:

Proper system operation requires a

clear view of the road by the camera. Have
any windshield damage in the area of the
camera's field of view repaired.

Note:

If something hits the front end of your

vehicle or damage occurs, the radar sensing
zone may change. This could cause missed
or false vehicle detections. Contact an
authorized dealer to have the radar checked
for proper coverage and operation.

Note:

If your vehicle detects excessive heat

at the camera or a potential misalignment
condition, a message may display in the
information display indicating temporary
sensor unavailability. This message
deactivates automatically when operational
conditions are correct. For example, when
the ambient temperature around the sensor
decreases or the sensor automatically
recalibrates successfully.