Ford F-150 (2018 year). Manual - part 53

WARNINGS

Always fully apply the parking brake.
Make sure you shift into park (P) for
vehicles with an automatic

transmission. Switch the ignition off and
remove the key whenever you leave your
vehicle.

On some four-wheel drive vehicles, when
the transfer case is in the neutral (N)
position, the engine and transmission
disconnect from the rest of the driveline.
Therefore, your vehicle is free to roll even
if it is parked. Do not leave your vehicle
unattended with the transfer case in the
neutral (N) position. Always set the parking
brake fully and turn off the ignition when
leaving your vehicle.

Maintenance and Modifications

The suspension and steering systems on
your vehicle have been designed and
tested to provide predictable performance
whether loaded or empty. For this reason,
we strongly recommend that you do not
make modifications such as adding or
removing parts (for example, lift kits or
stabilizer bars) or by using replacement
parts not equivalent to the original factory
equipment.

We recommend that you use caution when
your vehicle has either a high load or device
(such as ladders or luggage racks). Any
modifications to your vehicle that raise the
center of gravity may cause your vehicle
to roll over when there is a loss of vehicle
control.

Failure to maintain your vehicle correctly
may void the warranty, increase your repair
cost, reduce vehicle performance and
operational capabilities and adversely
affect you and your passenger's safety. We
recommend you frequently inspect your
vehicle's chassis components when your
vehicle is subject to off road usage.

 (If Equipped)

ELECTRONIC LOCKING
DIFFERENTIAL

 (If Equipped)

Note: The electronic locking differential is
for off-road use only and is not for use on
dry pavement. Using the electronic locking
differential on dry pavement will result in
increased tire wear, noise and vibration.

The electronic locking differential is a
device housed in the rear axle that allows
both rear wheels to turn at the same
speed. The electronic locking differential
can provide additional traction should your
vehicle become stuck. You can activate
the differential electronically and shift it
on the fly within the differential operating
speed range. The differential is for use in
mud, rocks, sand, or any off-road condition
where you need maximum traction. It is
not for use on dry pavement.

The following conditions will affect the
electronic locking differential:

•

The electronic locking differential will
not engage if your vehicle speed is
above 20 mph (32 km/h) in 4x2, 4x4
Auto, or 4x4 High modes.

•

The electronic locking differential will
not engage if your vehicle speed is
above or 56 mph (90 km/h) in 4X4
Low.

•

The electronic locking differential may
not engage if you press your
accelerator pedal during an
engagement attempt. A message may
display in the instrument display
guiding you to release the accelerator
pedal.

•

In 4x2, 4x4 Auto, and 4x4 High modes,
the electronic locking differential will
automatically disengage at speeds
above 25 mph (41 km/h) and will
automatically reengage at speeds
below 20 mph (32 km/h).

•

In 4L (4X4 low), the electronic locking
differential will automatically
disengage at speeds above 62 mph
(100 km/h) and will automatically
reengage at speeds below 56 mph
(90 km/h).

•

The AdvanceTrac system has the
ability to take over control of the
electronic locking differential and
disable it during driving maneuvers
when necessary.

When you switch the system on, if you do
not meet the required conditions for
electronic locking differential activation,
the instrument cluster will display the
appropriate information guiding you
through the proper activation process.

Activating the Electronic Locking
Differential

Note: Do not use electronic locking
differential on dry, hard surfaced roads.
Doing so will produce excessive noise,
vibration and increase tire wear.

Note: If the electronic locking differential
has difficulty disengaging, release the
accelerator pedal and turn the steering
wheel in the opposite direction while rolling.

For 4WD vehicles

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Pull the 4WD control knob toward you.

For 2WD vehicles

E183740

Turn the control to ON.

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Once the indicator light
illuminates in the information
display, both rear wheel axle

shafts will be locked together providing
added traction.

If the indicator does not come on, or the
indicator turns off while driving, one of the
following has occurred:

•

The vehicle speed is too high.

•

The left and right rear wheel speed
difference is too high during an
engagement attempt.

•

The system has malfunctioned and is
accompanied by a message in the
information display. See your
authorized Ford dealer for assistance.

•

The vehicle is experiencing an anti-lock
brake activation.

GENERAL INFORMATION

Note: Occasional brake noise is normal. If
a metal-to-metal, continuous grinding or
continuous squeal sound is present, the
brake linings may be worn-out and an
authorized dealer should check them. If the
vehicle has continuous vibration or shudder
in the steering wheel while braking, an
authorized dealer should check your vehicle.

Note: Brake dust may accumulate on the
wheels, even under normal driving
conditions. Some dust is inevitable as the
brakes wear and does not contribute to
brake noise.  See Cleaning the Wheels
(page 374).

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See Warning Lamps and
Indicators (page 106).

Wet brakes result in reduced braking
efficiency. Gently press the brake pedal a
few times when driving from a car wash or
standing water to dry the brakes.

Brake Over Accelerator

In the event the accelerator pedal
becomes stuck or entrapped, apply steady
and firm pressure to the brake pedal to
slow the vehicle and reduce engine power.
If you experience this condition, apply the
brakes and bring your vehicle to a safe
stop. Switch the engine off, move the
transmission to park (P) and apply the
parking brake. Inspect the accelerator
pedal and the area around it for any items
or debris that may be obstructing its
movement. If none are found and the
condition persists, have your vehicle towed
to the nearest authorized dealer.

Emergency Brake Assist

Emergency brake assist detects when you
brake heavily by measuring the rate at
which you press the brake pedal. It
provides maximum braking efficiency as
long as you press the pedal. Emergency
brake assist can reduce stopping distances
in critical situations.

Anti-lock Brake System

This system helps you maintain steering
control during emergency stops by keeping
the brakes from locking.

This lamp momentarily
illuminates when you switch the
ignition on. If the light does not

illuminate during start up, remains on or
flashes, the anti-lock braking system may
be disabled. Have the system checked by
an authorized dealer. If the anti-lock brake
system is disabled, normal braking is still
effective.

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If the brake warning lamp
illuminates with the parking
brake released, have your brake

system serviced immediately.

HINTS ON DRIVING WITH
ANTI-LOCK BRAKES

The anti-lock braking system does not
eliminate the risks when:
•

You drive too closely to the vehicle in
front of you.

•

Your vehicle is hydroplaning.

•

You take corners too fast.

•

The road surface is poor.

Note:  If the system activates, the brake
pedal may pulse and may travel further.
Maintain pressure on the brake pedal.  You
may also hear a noise from the system.  This
is normal.