brake LINCOLN AVIATOR 2023 Repair Manual

REVERSE BRAKING ASSIST – TROUBLESHOOTING
REVERSE BRAKING ASSIST – INFORMATION MESSAGES
Action Message
Make sure that all doors, liftgate or tailgate and hood are closed. Drive
the vehicle on a straight road for a short period. Make sure the parking
aids and cross traffic alert systems are on. If the message remains on,
have the system checked as soon as possible. Reverse Brake Assist Not Available See Manual
Displays when a system error has occurred. Have your vehicle
checked as soon as possible. Reverse Brake Assist Fault
Displays when reverse brake assist is off. Reverse Brake Assist Off
279
Reverse Braking Assist (If Equipped)

PRINCIPLE OF OPERATION
The traction control system helps avoid drive
wheel spin and loss of traction.
If your vehicle begins to slide, the system
applies the brakes to individual wheels and,
when needed, reduces engine power at the
same time. If the wheels spin when
accelerating on slippery or loose surfaces,
the system reduces engine power in order
to increase traction.
USING TRACTION CONTROL
WARNING: Operating your vehicle
with the traction control disabled could
lead to an increased risk of loss of vehicle
control, vehicle rollover, personal injury
and death.
The system turns on each time you switch
on the ignition.
If your vehicle is stuck in mud or snow,
switching traction control off may be
beneficial as this allows the wheels to spin.Note:When you switch traction control off,
stability control remains fully active.
Switching the System Off
When you switch the system off or on, a
message appears in the information display
showing system status.
You can switch the system off by accessing
the traction control settings through the
touchscreen. See Settings (page 555).
Note:If your vehicle detects a loss of traction
due to excessive wheel spin or deceleration,
a display message appears on the
touchscreen prompting you to disable
traction control if needed.
Using the Information Display Controls
You can switch this feature off or on in the
information display. See General
Information (page 136).
System Indicator Lights and Messages
E138639
The stability and traction control
light:• Temporarily illuminates on engine
start-up.
• Flashes when a driving condition
activates either of the systems.
• Illuminates if a problem occurs in either
of the systems.
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The stability and traction control
off light temporarily illuminates on
engine start-up and stays on when
you switch the traction control system off.
281
Traction Control

PRINCIPLE OF OPERATION
WARNING: Vehicle modifications
involving braking system, aftermarket roof
racks, suspension, steering system, tire
construction and wheel and tire size may
change the handling characteristics of your
vehicle and may adversely affect the
performance of the electronic stability
control system. In addition, installing any
stereo loudspeakers may interfere with
and adversely affect the electronic stability
control system. Install any aftermarket
stereo loudspeaker as far as possible from
the front center console, the tunnel, and
the front seats in order to minimize the risk
of interfering with the electronic stability
control sensors. Reducing the
effectiveness of the electronic stability
control system could lead to an increased
risk of loss of vehicle control, vehicle
rollover, personal injury and death.
WARNING: Remember that even
advanced technology cannot defy the laws
of physics. It’s always possible to lose
control of a vehicle due to inappropriate
driver input for the conditions. Aggressive
driving on any road condition can cause
you to lose control of your vehicle
increasing the risk of personal injury or
property damage. Activation of the
electronic stability control system is an
indication that at least some of the tires
have exceeded their ability to grip the
road; this could reduce the operator’s
ability to control the vehicle potentially
resulting in a loss of vehicle control, vehicle
rollover, personal injury and death. If your
electronic stability control system activates,
SLOW DOWN.
The system automatically turns on each time
you switch the ignition on.
If a driving condition activates either the
stability control or the traction control system
you may experience the following conditions:• The stability and traction control light
flashes.
• Your vehicle slows down.
• Reduced engine power.
• A vibration in the brake pedal.
• The brake pedal is stiffer than usual.
• If the driving condition is severe and your
foot is not on the brake, the brake pedal
may move as the systems applies higher
brake forces.
The stability control system has several
features built into it to help you maintain
control of your vehicle:
Electronic Stability Control
The system enhances your vehicle’s ability
to prevent skids or lateral slides by applying
brakes to one or more of the wheels
individually and, if necessary, reducing
engine power.
282
Stability Control

Roll Stability Control
The system enhances your vehicle’s ability
to prevent rollovers by detecting your
vehicle’s roll motion and the rate at which it
changes by applying the brakes to one or
more wheels individually.
Curve Control
The system enhances your vehicle’s ability
to follow the road when cornering severely
or avoiding objects in the roadway. Curve
Control operates by reducing engine power
and, if necessary, applying brakes to one or
more of the wheels individually.
Traction Control
The system enhances your vehicle’s ability
to maintain traction of the wheels by
detecting and controlling wheel spin. See
Using Traction Control (page 281).
E72903
Vehicle without stability control
skidding off its intended route. A
Vehicle with stability control
maintaining control on a slippery
surface. B
USING STABILITY CONTROL
The system automatically turns on each time
you switch the ignition on.
You cannot switch the stability control and
roll stability control systems off, but when
you shift into reverse (R), the systems turn
off.
You can switch the traction control system
off or on. See Using Traction Control (page
281).
283
Stability Control

WHAT IS HILL DESCENT CONTROL
WARNING: Hill descent control
cannot control descent in all surface
conditions and circumstances, such as ice
or extremely steep grades. Hill descent
control is a driver assist system and cannot
substitute for good judgment by the driver.
Failure to do so may result in loss of
vehicle control, crash or serious injury.
WARNING: The system does not
replace the parking brake. When you leave
your vehicle, always apply the parking
brake.
Note:The system does not function below
3 mph (5 km/h).
Hill descent control allows the driver to set
and maintain vehicle speed while
descending steep slopes in various surface
conditions.The system can maintain vehicle speeds on
downhill slopes between 3–20 mph
(5–32 km/h). Above 20 mph (32 km/h), the
system remains on but the descent speed
cannot be set or maintained.
The system requires a cool down interval
after a period of sustained use. The amount
of time that the system can remain active
before cooling varies with conditions. The
system provides a warning in the message
center and a tone sounds when the system
is about to disengage for cooling. At this
time, manually apply the brakes as needed
to maintain descent speed.
SWITCHING HILL DESCENT
CONTROL ON AND OFF
You can switch the hill descent control on
and off through the touchscreen.
SETTING THE HILL DESCENT
SPEED
WARNING: The system does not
replace the parking brake. When you leave
your vehicle, always apply the parking
brake.
WARNING: The system does not
control speed in low traction conditions or
extremely steep slopes. The system is
designed to be an aid and does not relieve
you of your responsibility to drive with due
care and attention. Failure to follow this
instruction could result in personal injury.
To increase the descent speed, press the
accelerator pedal until you reach the speed
you prefer.
To decrease the descent speed, press the
brake pedal until you reach the speed you
prefer.
284
Hill Descent Control (If Equipped)

PRINCIPLE OF OPERATION
WARNING: To help avoid personal
injury, always use caution when in reverse
(R) and when using the sensing system.
WARNING: The system may not
detect objects with surfaces that absorb
reflection. Always drive with due care and
attention. Failure to take care may result
in a crash.
WARNING: Traffic control systems,
inclement weather, air brakes, external
motors and fans may affect the correct
operation of the sensing system. This may
cause reduced performance or false alerts.
WARNING: The system may not
detect small or moving objects, particularly
those close to the ground.
Note:If your vehicle has MyKey™, the sensing
system cannot be switched off when a
MyKey™ is present. See Principle of
Operation (page 78).Note:Keep the sensors on the bumper or
fascia free from snow, ice and large
accumulations of dirt. If the sensors are
covered, the system’s accuracy can be
affected. Do not clean the sensors with sharp
objects.
Note:If your vehicle sustains damage to the
bumper or fascia, leaving it misaligned or
bent, the sensing zone may be altered
causing inaccurate measurement of
obstacles or false alerts.
Note:Certain add-on devices installed
around the bumper or fascia may create
false alerts. For example, large trailer
hitches, bike or surfboard racks, license plate
brackets, bumper covers or any other device
that may block the normal detection zone
of the system. Remove the add-on device to
prevent false alerts.
Note:When you connect a trailer to your
vehicle, the rear parking aid may detect the
trailer and therefore provide an alert. Disable
the rear parking aid when you connect a
trailer to prevent the alert.The sensing system warns the driver of
obstacles within a certain range of your
vehicle. The system turns on automatically
whenever you switch the ignition on.
You can switch the system off through the
touchscreen, information display or from the
pop-up message that appears once you shift
the transmission into reverse (R). If your
vehicle has a parking aid button, you can
switch the system off by pressing the button.
If a fault is present in the system, a warning
message appears in the information display.
See Information Messages (page 142).
REAR PARKING AID
WARNING: The system may not
detect objects with surfaces that absorb
reflection. Always drive with due care and
attention. Failure to take care may result
in a crash.
WARNING: The system may not
detect small or moving objects, particularly
those close to the ground.
286
Parking Aids

The system uses the front and rear
outermost parking aid sensors to detect
objects that are near to the sides of your
vehicle. The system displays them on a
virtual map in the information display as your
vehicle moves past them.
The sensors are on the front and rear
bumpers.
Note:Keep the sensors free from snow, ice
and large accumulations of dirt.
Note:Do not cover up the sensors.
Note:Do not clean the sensors with sharp
objects.
Note:If your vehicle sustains damage
leaving the sensors misaligned, this may
cause inaccurate measurements or false
alerts.
The system may not function if:
• You switch the ignition on, off and back
on within a few seconds.
• Your vehicle remains stationary for over
two minutes.
• The anti-lock brake system activates.
• The traction control system activates.Note:If you switch traction control off, the
side sensing system also turns off.
Note:Some accessories, for example large
trailer hitches or bike or surfboard racks can
cause reduced performance or false alerts.
To reinitialize the system, you may have to
drive your vehicle approximately 10 ft (3 m).
E190458
The sensor coverage area is up to 24 in
(60 cm) from the side of your vehicle.When the system detects an object within
the coverage area and the driving path of
your vehicle, an audible warning sounds. As
your vehicle moves closer to the object, the
rate of the tone increases.
Note:The system does not detect an object
that is moving toward the side of your
vehicle, for example another vehicle moving
at low speed, if it does not pass a front or
rear sensor.
291
Parking Aids

WARNING: Do not use the system
with accessories that extend beyond the
front or rear of your vehicle, for example a
trailer hitch, bike rack or side mirror
extensions such as telescoping mirrors or
towing mirrors. The system is not able to
make corrections for the additional length
of the accessories.
The system assists parking into and out of
parking spaces. Sensors are used to detect
parking spaces. The system then steers,
accelerates, brakes and shifts gear as
required to maneuver into or out of a parking
space.
Using Active Park Assist
E301E301111212
The parking aid button is above the
transmission selector, just below the display
screen.
Press the parking aid button then touch the
active park assist icon on the display screen
to bring up full screen notifications. Touch
the soft keys on the display screen to switch
between parallel park in, perpendicular park
in or parallel park out parking modes.
Driving into a Parking Space
Note:The system detects other vehicles and
curbs to find a parking space.Note:The system does not recognize
parking space lines and centers your vehicle
between objects.
Note:When parking perpendicularly, the
system backs your vehicle into parking
spaces.
1. Press the parking aid button.
2. Touch the active park assist icon on the
touchscreen.
Note:The system searches for parallel
parking spaces on the passenger side.
Touch the perpendicular park in icon on the
touchscreen to make the system search for
perpendicular spaces.
3. Use the direction indicator lever to
search for a parking space on the driver
or passenger side of your vehicle.
4. Drive your vehicle approximately 3 ft (1 m)
away from and parallel to the other
parked vehicles when searching for a
parking space.
Note: A tone sounds and a message
appears in the information display when
active park assist finds a suitable parking
space.
293
Parking Aids

5. Press and hold the brake pedal.
6. Release the steering wheel and shift into
neutral (N).
7. Press and hold the active park assist
button.
8. Release the brake pedal to allow the
vehicle to park.
Note:When parallel parking between
objects, the system parks closer to the object
in front of your vehicle to allow easier access
to your trunk.
Note:When perpendicular parking, the
system aligns the front end of your vehicle
with the lane side of the object next to it.
Note:When perpendicular parking, if the
system detects only one object, it allows
enough distance to open the door on either
side.
Note:You can slow down your vehicle at
any time by pressing the brake pedal.Note:When parking is complete the vehicle
shifts into park (P).
Leaving a Parking Space
The system assists leaving only parallel
parking spaces.
1. Press the parking aid button.
2. Use the direction indicator lever to
choose the direction to leave.
3. Press and hold the brake pedal.
4. Release the steering wheel and shift into
neutral (N).
5. Release the parking brake.
6. Press and hold the active park assist
button.
7. Release the brake pedal to allow the
vehicle to move.
Note: You can slow down your vehicle at
any time by pressing the brake pedal.Note:After the system drives your vehicle
to a position where you can exit the parking
space in a forward movement, a message
appears instructing you to take full control
of your vehicle.
Canceling Active Park Assist
To cancel parking assistance at any time,
shift out of neutral (N).
Note:If you turn the steering wheel or open
the driver door, the parking assistance also
cancels.
Pausing Active Park Assist
To pause parking assistance at any time,
release the parking aid button.
The vehicle stops moving until you press and
hold the parking aid button again.
Note:If you open the passenger or rear
doors, the parking assistance also pauses.
294
Parking Aids

WHAT IS CRUISE CONTROL
Cruise control lets you maintain a set speed
without keeping your foot on the accelerator
pedal.
Requirements
Use cruise control when the vehicle speed
is greater than 20 mph (30 km/h).
SWITCHING CRUISE CONTROL ON
AND OFF
WARNING: 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.
The cruise controls are on the steering
wheel.
Switching Cruise Control On
E71340
Press the button to put the system
in standby mode.
Switching Cruise Control Off
E71340
Press the button when in standby
mode or switch the ignition off.
Note:When you switch cruise control off the
set speed clears.
SETTING THE CRUISE CONTROL
SPEED
WARNING: When you are going
downhill, your vehicle speed could
increase above the set speed. The system
does not apply the brakes.
Drive to the speed you prefer.
Press either button to set the
current speed.
Take your foot off the accelerator pedal.
Note:The indicator changes color in the
information display.
Changing the Set Speed
Press and release the button to
increase the set speed in small
increments.
Press and hold the button to accelerate.
Release the button when you reach your
preferred speed.
Press and release the button to
decrease the set speed in small
increments.
Press and hold the button to decelerate.
Release the button when you reach your
preferred speed.
303
Cruise Control