2021 LINCOLN NAVIGATOR ABS

HEAD RESTRAINTS
WARNING: Fully adjust the head
restraint before you sit in or operate your
vehicle. This will help minimize the risk of
neck injury in the event of a crash. Do not
adjust the head restraint when your vehicle
is moving. WARNING:
The head restraint is a
safety device. Whenever possible it should
be installed and properly adjusted when
the seat is occupied. Failure to adjust the
head restraint properly could reduce its
effectiveness during certain impacts.
Note: Adjust the seat backrest to an upright
driving position before adjusting the head
restraint. Adjust the head restraint so that
the top of it is level with the top of your head
and as far forward as possible. Make sure
that you remain comfortable. If you are
extremely tall, adjust the head restraint to
its highest position. Front Seat Manual Head Restraints
The head restraints consist of:
An energy absorbing foam and
structure.
A
Two steel posts.
B
Guide sleeve with adjust and
release button.
C
Guide sleeve without button.
D Adjusting the Head Restraint
Raising the Head Restraint
Pull the head restraint up.
Lowering the Head Restraint
1. Press and hold button C.
2. Push the head restraint down.
Removing the Head Restraint
1.
Pull the head restraint up until it reaches
its highest position.
2. Press and hold button C.
3. Pull the head restraint up.
Note: You cannot remove front seat head
restraints that have entertainment system
video screens.
Installing the Head Restraint
Align the steel posts into the guide sleeves
and push the head restraint down until it
locks.
175
Navigator (TB9) Canada/United States of America, enUSA, First-Printing SeatsE138642

The head restraints consist of:
An energy absorbing foam and
structure.
A
Two steel posts.
B Guide sleeve with unlock and
remove button.
C
A fold button (If equipped).
D
Removing the Head Restraint
1. Press and hold both C buttons.
2. Pull the head restraint up.
Installing the Head Restraint
Align the steel posts into the guide sleeves
and push the head restraint down until it
locks.
Note: Make sure the head restraint fold
button is facing the outboard side of the
seat.
Folding the Head Restraint
1. Press button D to fold the head restraint.
2. Pull the head restraint up to place it back
to the upright position. Second Row Center Seat Head Restraint
The head restraints consist of:
An energy absorbing foam and
structure.
A
Two steel posts.
B
Guide sleeve with adjust and
release button.
C
Guide sleeve with unlock and
remove button.
D
Raising the Head Restraint
Pull the head restraint up.
177
Navigator (TB9) Canada/United States of America, enUSA, First-Printing SeatsE257663 E138645

Lowering the Head Restraint
1. Press and hold button C.
2. Push the head restraint down.
Removing the Head Restraint
1.
Pull the head restraint up until it reaches
its highest position.
2. Press and hold buttons C and D.
3. Pull the head restraint up.
Installing the Head Restraint
Align the steel posts into the guide sleeves
and push the head restraint down until it
locks.
Third Row Head Restraints
The third row head restraints are
non-adjustable, but you may be able to fold
them. The head restraints consist of:
•
An energy absorbing foam and structure.
• A fold button (If equipped).
1. Press the button to fold the head restraint.
2. Pull the head restraint up to place it back
in the upright position.
Power Rear Head Restraints
The third row outermost head restraints are
fixed and cannot be removed. Press the button on the overhead console
to fold the third row outermost head
restraints.
Pull the head restraint up to place it in the
upright position.
Note:
These head restraints fold when you
press the fold flat button.
178
Navigator (TB9) Canada/United States of America, enUSA, First-Printing SeatsE193964 E255798

SAFETY PRECAUTIONS
WARNING: Do not overfill the fuel
tank. The pressure in an overfilled tank
may cause leakage and lead to fuel spray
and fire. WARNING:
The fuel system may be
under pressure. If you hear a hissing sound
near the fuel filler inlet, do not refuel until
the sound stops. Otherwise, fuel may spray
out, which could cause serious personal
injury. WARNING:
Fuels can cause serious
injury or death if misused or mishandled. WARNING:
Fuel may contain
benzene, which is a cancer-causing agent. WARNING:
When refueling always
shut the engine off and never allow sparks
or open flames near the fuel tank filler
valve. Never smoke or use a cell phone
while refueling. Fuel vapor is extremely
hazardous under certain conditions. Avoid
inhaling excess fumes.
Follow these guidelines when refueling:
• Extinguish all smoking materials and any
open flames before refueling your
vehicle.
• Always switch the engine off before
refueling.
• Automotive fuels can be harmful or fatal
if swallowed. Fuel is highly toxic and if
swallowed can cause death or permanent
injury. If fuel is swallowed immediately
call a physician, even if no symptoms are
immediately apparent. The toxic effects
of fuel may not be apparent for hours. •
Avoid inhaling fuel vapors. Inhaling fuel
vapor can lead to eye and respiratory
tract irritation. In severe cases, excessive
or prolonged breathing of fuel vapor can
cause serious illness and permanent
injury.
• Avoid getting fuel in your eyes. If you
splash fuel in your eyes, immediately
remove contact lenses (if worn), flush with
water for 15 minutes and seek medical
attention. Failure to seek proper medical
attention could lead to permanent injury.
• Fuels can be harmful if absorbed through
the skin. If you splash fuel on your skin,
clothing or both, promptly remove
contaminated clothing and thoroughly
wash your skin with soap and water.
Repeated or prolonged skin contact
causes skin irritation.
• Be particularly careful if you are taking
Antabuse or other forms of Disulfiram for
the treatment of alcoholism. Breathing
fuel vapors could cause an adverse
reaction, serious personal injury or
sickness. Immediately call a physician if
you experience any adverse reactions.
215
Navigator (TB9) Canada/United States of America, enUSA, First-Printing Fuel and Refueling

EMISSION LAW
WARNING: Do not remove or alter
the original equipment floor covering or
insulation between it and the metal floor
of the vehicle. The floor covering and
insulation protect occupants of the vehicle
from the engine and exhaust system heat
and noise. On vehicles with no original
equipment floor covering insulation, do not
carry passengers in a manner that permits
prolonged skin contact with the metal floor.
Failure to follow these instructions may
result in fire or personal injury.
U.S. federal laws and certain state laws
prohibit removing or rendering inoperative
emission control system components. Similar
federal or provincial laws may apply in
Canada. We do not approve of any vehicle
modification without first determining
applicable laws. Tampering with emissions control
systems including related sensors
or the Diesel Exhaust Fluid system
can result in reduced engine power and the
illumination of the service engine soon light.
Tampering With a Noise Control
System
Federal laws prohibit the following acts:
• Removal or rendering inoperative by any
person other than for purposes of
maintenance.
• Repair or replacement of any device or
element of the design incorporated into
a new vehicle for the purpose of noise
control prior to its sale or delivery to the
ultimate purchaser or while it is in use.
• The use of the vehicle after any person
removes or renders inoperative any
device or element of the design. The U.S. Environmental Protection Agency
may presume to constitute tampering as
follows:
•
Removal of hood blanket, fender apron
absorbers, fender apron barriers,
underbody noise shields or acoustically
absorptive material.
• Tampering or rendering inoperative the
engine speed governor, to allow engine
speed to exceed manufacturer
specifications.
If the engine does not start, runs rough,
experiences a decrease in engine
performance, experiences excess fuel
consumption or produces excessive exhaust
smoke, check for the following:
• A plugged or disconnected air inlet
system hose.
• A plugged engine air filter element.
• Water in the fuel filter and water
separator.
• A clogged fuel filter.
• Contaminated fuel.
• Air in the fuel system, due to loose
connections.
223
Navigator (TB9) Canada/United States of America, enUSA, First-Printing Engine Emission Control

•
An open or pinched sensor hose.
• Incorrect engine oil level.
• Incorrect fuel for climatic conditions.
• Incorrect engine oil viscosity for climactic
conditions.
Note: Some vehicles have a lifetime fuel filter
that is integrated with the fuel tank. Regular
maintenance or replacement is not needed.
Note: If these checks do not help you correct
the concern, have your vehicle checked as
soon as possible.
Noise Emissions Warranty, Prohibited
Tampering Acts and Maintenance
On January 1, 1978, Federal regulation
became effective governing the noise
emission on trucks over 10,000 lb (4,536 kg)
Gross Vehicle Weight Rating (GVWR). The
preceding statements concerning prohibited
tampering acts and maintenance, and the
noise warranty found in the Warranty Guide,
are applicable to complete chassis cabs over
10,000 lb (4,536 kg)
GVWR. CATALYTIC CONVERTER WARNING:
Do not park, idle or drive
your vehicle on dry grass or other dry
ground cover. The emission system heats
up the engine compartment and exhaust
system, creating the risk of fire. WARNING:
The normal operating
temperature of the exhaust system is very
high. Never work around or attempt to
repair any part of the exhaust system until
it has cooled. Use special care when
working around the catalytic converter.
The catalytic converter heats up to a very
high temperature after only a short period
of engine operation and stays hot after the
engine is switched off. WARNING: Exhaust leaks may result
in entry of harmful and potentially lethal
fumes into the passenger compartment. If
you smell exhaust fumes inside your
vehicle, have your vehicle inspected
immediately. Do not drive if you smell
exhaust fumes. Your vehicle has various emission control
components and a catalytic converter that
enables it to comply with applicable exhaust
emission standards.
To make sure that the catalytic converter and
other emission control components continue
to work properly:
•
Do not crank the engine for more than
10 seconds at a time.
• Do not run the engine with a spark plug
lead disconnected.
• Do not push-start or tow-start your
vehicle. Use booster cables.
See Jump
Starting the Vehicle (page 346).
• Use only the specified fuel listed.
• Do not switch the ignition off when your
vehicle is moving.
• Avoid running out of fuel.
• Have the items listed in scheduled
maintenance information performed
according to the specified schedule.
Note: Resulting component damage may
not be covered by the vehicle Warranty.
224
Navigator (TB9) Canada/United States of America, enUSA, First-Printing Engine Emission Control

PRINCIPLE OF OPERATION
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.
Hill descent control allows you to set and
maintain vehicle speed when descending
steep grades in various surface conditions.
Hill descent control can maintain vehicle
speeds on downhill grades between
0 mph
(3 km/h) and 20 mph (32 km/h). Above
20 mph (32 km/h), the system remains
armed, but you cannot use the system to set
or maintain the descent speed. Hill descent control requires a cooling down
interval after a period of sustained use. The
amount of time that the feature 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.
USING HILL DESCENT CONTROL
You can switch the hill descent
control on and off through the
information display.
To increase descent speed, press the
accelerator pedal until you reach the desired
speed. To decrease descent speed, press
the brake pedal until you reach the desired
speed.
Whether accelerating or decelerating, once
you reach the desired descent speed,
remove your feet from the pedals and hill
descent control maintains the chosen vehicle
speed. Note:
You may observe noise from the ABS
pump motor during hill descent control
operation. This is a normal characteristic of
the ABS and should be no reason for
concern.
Hill Descent Modes
• At speeds between
2 mph (3 km/h) and
20 mph (32 km/h): Your vehicle maintains
the speed you desire while in this mode.
• At speeds between
20 mph (32 km/h)
and 40 mph (64 km/h): Your vehicle does
not maintain the speed you desire and
you cannot set your descent speed.
• At speeds above 40 mph (64 km/h): You
need to switch this feature back on to
use.
Refer to the Information Display for additional
hill descent control messages.
See
Information Messages (page 139).
250
Navigator (TB9) Canada/United States of America, enUSA, First-Printing 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:
Certain add-on devices installed
around the bumper or fascia may create
false beeps. 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.
Note: Keep the sensors, located 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 alarms. See your
authorized technician.
Note: When a trailer is connected to your
vehicle, the rear parking aid may detect the
trailer and therefore provide warnings.
Disable the rear parking aid when a trailer
is connected to prevent these warnings. Note:
The sensing system cannot be turned
off when a MyKey is present. See Principle
of Operation
(page 79).
We recommend that you take some time to
get to know the system and its limitations by
reading this section.
The sensing system warns the driver of
obstacles within a certain range of your
vehicle. The system automatically turns on
each time you switch the ignition on.
When receiving a detection warning, the
radio volume reduces to a predetermined
level. After the warning goes away, the radio
volume returns to the previous level. You can turn the system on or off
by pressing the parking aid button.
If your vehicle does not have a
parking aid button, the system can be
switched off through the information display
menu or from the pop-up message that
appears once you shift the transmission into
reverse (R).
See General Information (page
134).
251
Navigator (TB9) Canada/United States of America, enUSA, First-Printing Parking AidsE139213