2021 LINCOLN AVIATOR maintenance

•
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 353).
• 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.
235
Aviator (CTV) Canada/United States of America, enUSA, Edition date: 202007, Second-Printing Engine Emission Control

The scheduled maintenance items listed in
scheduled maintenance information are
essential to the life and performance of your
vehicle and to its emissions system.
If you use anything other than Ford,
Motorcraft or Ford-authorized parts for
maintenance replacements or for service of
components affecting emission control, such
non-Ford parts should be equivalent to
genuine Ford Motor Company parts in
performance and durability.
Illumination of the service engine soon
indicator, charging system warning light or
the temperature warning light, fluid leaks,
strange odors, smoke or loss of engine
power could indicate that the emission
control system is not working properly.
An improperly operating or damaged exhaust
system may allow exhaust to enter the
vehicle. Have a damaged or improperly
operating exhaust system inspected and
repaired immediately.
Do not make any unauthorized changes to
your vehicle or engine. By law, vehicle
owners and anyone who manufactures,
repairs, services, sells, leases, trades
vehicles, or supervises a fleet of vehicles are
not permitted to intentionally remove an
emission control device or prevent it from
working. Information about your vehicle
’s
emission system is on the Vehicle Emission
Control Information Decal located on or near
the engine. This decal also lists engine
displacement.
Please consult your warranty information for
complete details.
On-Board Diagnostics (OBD-II)
Your vehicle has a computer known as the
on-board diagnostics system (OBD-II) that
monitors the engine ’s emission control
system. The system protects the environment
by making sure that your vehicle continues
to meet government emission standards. The
OBD-II system also assists a service
technician in properly servicing your vehicle. When the service engine soon
indicator illuminates, the OBD-II
system has detected a malfunction.
Temporary malfunctions may cause the
service engine soon indicator to illuminate.
Examples are:
1. Your vehicle has run out of fuel—the engine may misfire or run poorly.
2. Poor fuel quality or water in the fuel—the
engine may misfire or run poorly.
3. The fuel fill inlet may not have closed properly. See Refueling (page 229).
4. Driving through deep water—the electrical system may be wet.
You can correct these temporary
malfunctions by filling the fuel tank with good
quality fuel, properly closing the fuel fill inlet
or letting the electrical system dry out. After
three driving cycles without these or any
other temporary malfunctions present, the
service engine soon indicator should stay off
the next time you start the engine. A driving
cycle consists of a cold engine startup
followed by mixed city and highway driving.
No additional vehicle service is required.
236
Aviator (CTV) Canada/United States of America, enUSA, Edition date: 202007, Second-Printing Engine Emission Control

If the service engine soon indicator remains
on, have your vehicle serviced at the first
available opportunity. Although some
malfunctions detected by the OBD-II may not
have symptoms that are apparent, continued
driving with the service engine soon indicator
on can result in increased emissions, lower
fuel economy, reduced engine and
transmission smoothness and lead to more
costly repairs.
Readiness for Inspection and
Maintenance (I/M) Testing
Some state and provincial and local
governments may have
Inspection/Maintenance (I/M) programs to
inspect the emission control equipment on
your vehicle. Failure to pass this inspection
could prevent you from getting a vehicle
registration.
If the service engine soon indicator
is on or the bulb does not work,
your vehicle may need service.
See On-Board Diagnostics. Your vehicle may not pass the I/M test if the
service engine soon indicator is on or not
working properly (bulb is burned out), or if
the OBD-II system has determined that some
of the emission control systems have not
been properly checked. In this case, the
vehicle is not ready for I/M testing.
If the vehicle
’s engine or transmission has
just been serviced, or the battery has
recently run down or been replaced, the
OBD-II system may indicate that the vehicle
is not ready for I/M testing. To determine if
the vehicle is ready for I/M testing, turn the
ignition key to the on position for 15 seconds
without cranking the engine. If the service
engine soon indicator blinks eight times, it
means that the vehicle is not ready for I/M
testing; if the service engine soon indicator
stays on solid, it means that your vehicle is
ready for I/M testing.
The OBD-II system checks the emission
control system during normal driving. A
complete check may take several days.
If the vehicle is not ready for I/M testing, you
can perform the following driving cycle
consisting of mixed city and highway driving: 1. 15 minutes of steady driving on an
expressway or highway followed by 20
minutes of stop-and-go driving with at
least four 30-second idle periods.
2. Allow your vehicle to sit for at least eight
hours with the ignition off. Then, start the
vehicle and complete the above driving
cycle. The vehicle must warm up to its
normal operating temperature. Once
started, do not turn off the vehicle until
the above driving cycle is complete.
If the vehicle is still not ready for I/M testing,
you need to repeat the above driving cycle.
237
Aviator (CTV) Canada/United States of America, enUSA, Edition date: 202007, Second-Printing Engine Emission Control

GENERAL INFORMATION
WARNING: This battery pack should
only be serviced by an authorized electric
vehicle technician. Improper handling can
result in personal injury or death. WARNING: Apply the parking brake,
shift into park (P), switch the ignition off
and remove the key before you open the
hood or have any service or repair work
completed. If you do not switch the ignition
off, the engine could restart at any time.
Failure to follow this instruction could result
in personal injury or death. WARNING:
Do not touch the
electronic ignition system parts after you
have switched the ignition on or when the
engine is running. The system operates at
high voltage. Failure to adhere to this
warning could result in serious personal
injury or death. WARNING:
Keep your hands and
clothing clear of the engine cooling fan. Your vehicle consists of various high-voltage
components and wiring. All of the
high-voltage power flows through specific
wiring assemblies labeled as such or covered
with a solid orange convolute, or orange
striped tape, or both. Do not come in contact
with these components.
The high-voltage battery system is a
high-voltage, lithium-ion battery system. The
pack is located underneath the vehicle. The
high voltage battery system uses an
advanced active liquid heating and cooling
system to regulate high voltage battery
temperature and help maximize the life of
the high voltage battery.
Note:
The high-voltage battery does not
require regular service maintenance. CHARGING THE HIGH VOLTAGE
BATTERY - PLUG-IN HYBRID
ELECTRIC VEHICLE (PHEV)
IMPORTANT SAFETY INSTRUCTIONS WARNING:
In Canada, do not use
the 120 volt convenience cord in
commercial garages. WARNING:
This equipment has
arcing or sparking parts. Do not expose to
flammable vapors. Position this equipment
at least
18 in (450 mm) above the floor.
238
Aviator (CTV) Canada/United States of America, enUSA, Edition date: 202007, Second-Printing High Voltage Battery

Operating ALL-Wheel drive (AWD)
Vehicles with Mismatched Tires
WARNING: Only use replacement
tires and wheels that are the same size,
load index, speed rating and type (such as
P-metric versus LT-metric or all-season
versus all-terrain) as those originally
provided by Ford. The recommended tire
and wheel size may be found on either the
Safety Compliance Certification Label
(affixed to either the door hinge pillar,
door-latch post, or the door edge that
meets the door-latch post, next to the
driver's seating position), or the Tire Label
which is located on the B-Pillar or edge of
the driver's door. If this information is not
found on these labels, then you should
contact your authorized dealer as soon as
possible. Use of any tire or wheel not
recommended by Ford can affect the
safety and performance of your vehicle,
which could result in an increased risk of
loss of vehicle control, vehicle rollover,
personal injury and death. Major dissimilar tire sizes between the front
and rear axles (for example, 17 inch low
profile tires on the front axle and 22 inch high
profile tires on the rear axle) could cause the
AWD system to stop functioning and default
to rear-wheel drive or damage the AWD
system.
For optimum AWD Performance, it is
recommended to follow the tire rotation
maintenance schedule. To avoid potential
AWD malfunction or AWD system damage,
it is recommended to replace all four tires
rather than mixing significantly worn tires
with new tires. For example, using 3 worn
tread tires and 1 new tread tire all of the same
original tire size/brand, can be tolerated by
the AWD system as long as the worn tires
still have usable tread depth.
How Your Vehicle Differs from Other
Vehicles
Truck and utility vehicles can differ from
some other vehicles. Your vehicle could be
higher to allow it to travel over rough terrain
without getting hung up or damaging
underbody components. The differences that make your vehicle so
versatile also make it handle differently than
an ordinary passenger car.
Maintain steering wheel control at all times,
especially in rough terrain. Since sudden
changes in terrain can result in abrupt
steering wheel motion, make sure you grip
the steering wheel from the outside. Do not
grip the spokes.
Drive cautiously to avoid vehicle damage
from concealed objects such as rocks and
stumps.
You should either know the terrain or
examine maps of the area before driving.
Map out your route before driving in the area.
To maintain steering and braking control of
your vehicle, you must have all four wheels
on the ground and they must be rolling, not
sliding or spinning.
251
Aviator (CTV) Canada/United States of America, enUSA, Edition date: 202007, Second-Printing All-Wheel Drive
(If Equipped)

Descend a hill in the same gear you would
use to climb up the hill to avoid excessive
brake application and brake overheating. Do
not descend in neutral; instead, disengage
overdrive or manually shift to a lower gear.
When descending a steep hill, avoid sudden
hard braking as you could lose control. The
front wheels have to be turning in order to
steer the vehicle.
Your vehicle has anti-lock brakes, therefore
apply the brakes steadily. Do not “pump
” the
brakes.
Driving on Snow and Ice WARNING: If you are driving in
slippery conditions that require tire chains
or cables, then it is critical that you drive
cautiously. Keep speeds down, allow for
longer stopping distances and avoid
aggressive steering to reduce the chances
of a loss of vehicle control which can lead
to serious injury or death. If the rear end
of your vehicle slides while cornering, steer
in the direction of the slide until you regain
control of your vehicle. Note:
Excessive tire slippage can cause
driveline damage.
AWD vehicles have advantages over 2WD
vehicles in snow and ice but can skid like
any other vehicle.
Should you start to slide while driving on
snowy or icy roads, turn the steering wheel
in the direction of the slide until you regain
control.
Avoid sudden applications of power and
quick changes of direction on snow and ice.
Apply the accelerator slowly and steadily
when starting from a full stop.
Avoid sudden braking as well. Although an
AWD vehicle could accelerate better than a
two-wheel drive vehicle in snow and ice, it
will not stop any faster, because as in other
vehicles, braking occurs at all four wheels.
Do not become overconfident as to road
conditions. Make sure you allow sufficient distance
between you and other vehicles for stopping.
Drive slower than usual and consider using
one of the lower gears. In emergency
stopping situations, apply the brake steadily.
Since your vehicle is equipped with a four
wheel (ABS), do not “pump
” the brakes. See
Hints on Driving With Anti-Lock Brakes
(page
258).
Maintenance and Modifications
The suspension and steering systems on
your vehicle have been designed and tested
to provide predictable performance whether
loaded or empty and durable load carrying
capability. For this reason, we strongly
recommend that you do not make
modifications such as adding or removing
parts (such as lowering kits or stabilizer bars)
or by using replacement parts not equivalent
to the original factory equipment.
255
Aviator (CTV) Canada/United States of America, enUSA, Edition date: 202007, Second-Printing All-Wheel Drive
(If Equipped)

Note:
If your vehicle has a navigation
system, stored speed sign data could
influence the indicated speed limit value. To switch the system speed warning on or
off, adjust the speed warning settings use
the touchscreen:
1. Select Settings.2. Select
Driver Assistance.
3. Select
Tolerance.
4. Use
+ and - to set the tolerance.
Information Messages Action
Message
The traffic sign data provided by the navigation system is unavailable
due to weak or no signal. Wait for a short period of time for the signalto improve. If the message continues to appear, have your vehicle checked as soon as possible.
Traffic Sign Reduced Performance See Manual
STEERING
Electric Power Steering WARNING:
The electric power
steering system has diagnostic checks that
continuously monitor the system. If a fault
is detected, a message displays in the
information display. Stop your vehicle as
soon as it is safe to do so. Switch the ignition off. After at least 10 seconds,
switch the ignition on and watch the
information display for a steering system
warning message. If a steering system
warning message returns, have the system
checked as soon as possible.
WARNING: If the system detects an
error, you may not feel a difference in the
steering, however a serious condition may
exist. Have your vehicle checked as soon
as possible. Failure to do so may result in
loss of steering control. Your vehicle has an electric power steering
system. There is no fluid reservoir and
therefore requires no maintenance.
If your vehicle loses electrical power when
you are driving, electric power steering
assistance is lost. The steering system still
operates and you can manually steer your
vehicle. Manually steering your vehicle
requires more effort.
322
Aviator (CTV) Canada/United States of America, enUSA, Edition date: 202007, Second-Printing Driving Aids

Special Loading Instructions for
Owners of Pick-up Trucks and Utility-
type Vehicles
WARNING: When loading the
roof racks, we recommend you evenly
distribute the load, as well as maintain
a low center of gravity. Loaded
vehicles, with higher centers of gravity,
may handle differently than unloaded
vehicles. Take extra precautions, such
as slower speeds and increased
stopping distance, when driving a
heavily loaded vehicle.
AIR SUSPENSION
(IF EQUIPPED) WARNING:
If your vehicle has
self-leveling air suspension, you must
switch the system off before carrying out
any maintenance or repair. Failure to follow
this warning could result in serious
personal injury or death. The air suspension system automatically
adjusts to maintain a constant frame height,
allows for ease of vehicle loading, provides
improved vehicle ride, and increased driver
comfort.
You can adjust different ride settings through
the selectable drive modes.
See Selecting
a Drive Mode (page 329).
Note: The air suspension system may not
operate properly if you exceed the load limit.
See
Load Limit (page 334).
Note: When your vehicle is off, the air
compressor may run for a short time. This is
normal.
Switching the systems on or off
You can access the air suspension, liftgate
and easy entry features through the
information display menu settings.
See
General Information (page 134).
Using the Service Mode
When the service mode is active, the air
suspension does not make any adjustments
while your vehicle is stationary. Note:
Always switch the air suspension
service mode to on before servicing your
vehicle.
Using Cargo Loading
The air suspension cargo loading feature
lowers your vehicle for easier access when
the system detects the liftgate is opening.
When the liftgate is closed your vehicle
returns to its normal height after a short time.
Note: To preserve your vehicle battery, your
vehicle may only lower for cargo mode one
to two times per ignition cycle.
Using Easy Entry
The air suspension can lower your vehicle
to an easier access entry height when the
system detects the intelligent access key,
you press the unlock button, use the remote
start, or use Phone as a Key.
The leveling process stops when you open
a door or the target level is achieved.
Note: To stop the leveling process, press the
lock button on the intelligent access key.
338
Aviator (CTV) Canada/United States of America, enUSA, Edition date: 202007, Second-Printing Load Carrying