2021 LINCOLN AVIATOR maintenance

CRASH SENSORS AND AIRBAG
INDICATOR
WARNING: Modifying or adding
equipment to the front end of your vehicle
(including hood, bumper system, frame,
front end body structure, tow hooks and
hood pins) may affect the performance of
the airbag system, increasing the risk of
injury. Do not modify or add equipment to
the front end of your vehicle.
Your vehicle has a collection of crash and
occupant sensors which provide information
to the restraints control module. The
restraints control module deploys (activates)
the seatbelt pretensioners, driver airbag,
passenger airbag, knee airbag(s), seat
mounted side airbags and the Safety
Canopy. Based on the type of crash, the
restraints control module deploys the
appropriate safety devices. The restraints control module also monitors
the readiness of the above safety devices
plus the crash and occupant sensors. The
readiness of the safety system is indicated
by a warning indicator light in the instrument
cluster or by a backup tone if the warning
light is not working. Routine maintenance of
the airbag is not required.
A difficulty with the system is indicated by
one or more of the following:
•
The readiness light will not illuminate
immediately after you switch the ignition
on.
• The readiness light either flashes or stays
lit.
• A series of five beeps is heard. The tone
pattern repeats periodically until the
problem, the light or both are repaired. If any of these things happen, even
intermittently, have the supplemental
restraint system serviced at an authorized
dealer immediately. Unless serviced, the
system may not function properly in the
event of a crash.
The restraint system is designed to activate
when the vehicle sustains conditions
sufficient to cause the restraint control
module to deploy a safety device.
The fact that not all the safety devices
activate for all occupants in a crash does not
mean something is wrong with the system.
Rather, it means the restraints control module
determined the accident conditions (crash
severity, type of crash, belt usage) were not
appropriate to activate these safety devices.
•
The front airbags are designed to
activate only in frontal and near-frontal
crashes (not rollovers, side impacts or
rear impacts) unless the crash causes
sufficient frontal deceleration.
• The seatbelt pretensioners are designed
to activate in frontal, near-frontal and side
crashes, and in rollovers.
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Aviator (CTV) Canada/United States of America, enUSA, Edition date: 202007, Second-Printing Supplementary Restraints SystemE67017

Low Tire Pressure Warning
Illuminates when your tire pressure
is low. If the lamp remains on with
the engine running or when
driving, check your tire pressure as soon as
possible.
It also illuminates momentarily when you
switch the ignition on to confirm the lamp is
functional. If it does not illuminate when you
switch the ignition on, or begins to flash at
any time, have the system checked by an
authorized dealer.
Low Washer Fluid Illuminates when the windshield
washer fluid is low.
Powertrain Fault Illuminates when the system
detects a powertrain or an 4WD
fault. Contact an authorized dealer
as soon as possible. Ready to Drive (If Equipped) Illuminates when you have
switched on your vehicle and it is
ready to drive. A corresponding
message may appear stating ready to drive.
Service Engine Soon It illuminates when you switch the
ignition on prior to engine start to
check the bulb and to indicate
whether your vehicle is ready for Inspection
and Maintenance (I/M) testing.
Normally, it illuminates until the engine is
cranked and automatically turns off if no
system errors are present. However, if after
15 seconds it flashes eight times, this
indicates that your vehicle is not ready for
Inspection and Maintenance (I/M) testing.
See
Catalytic Converter (page 235).
If it illuminates when the engine is running
this indicates a system error. The On Board
Diagnostics system has detected an error in
the vehicle emission control system. If it flashes, engine misfire may be occurring.
Continuing to drive your vehicle may cause
reduced power or the engine to stop. Failure
to respond to the warning lamp may cause
component damage not covered by the
vehicle Warranty. Have your vehicle
checked as soon as possible.
Stability Control
It flashes when the system is
active. If it remains illuminated or
does not illuminate when you
switch the ignition on, this indicates a system
error. During a system error the system
switches off. Have the system checked by
an authorized dealer immediately.
See
Using Stability Control (page 269).
Stability Control Off Illuminates when you switch the
system off. It goes out when you
switch the system back on or when
you switch the ignition off.
See Using
Stability Control (page 269).
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Aviator (CTV) Canada/United States of America, enUSA, Edition date: 202007, Second-Printing Instrument Cluster E132353 E224090 E138639 E130458

Maintenance
Action
Message
Stop your vehicle as soon as safely possible and turn off the engine. Check the oil level. If
this message stays on or continues to come on with your engine running, \
have the system checked as soon as possible.
Low Engine Oil Pressure
The engine oil life is low and needs to be changed soon. See General Maintenance
Information (page 564).
Change Engine Oil Soon
The engine oil life is low and needs to be changed immediately. See General MaintenanceInformation
(page 564).
Oil Change Required
The brake fluid level is low and the brake system should be inspected immediately.
See
Brake Fluid Check (page 395).
Brake Fluid Level Low
The brake system needs servicing. Stop the vehicle in a safe place. Have the system checked as soon as possible.
Check Brake System
The engine coolant temperature is excessively high.
Engine Coolant Over Temperature
The washer fluid is low and needs to be refilled.
Washer Fluid Level Low
Indicates that your vehicle is still in Transport mode. This may not allow some features tooperate properly. Have the system checked as soon as possible.
Transport Mode Contact Dealer
Indicates that your vehicle is still in Factory mode. This may not allow some features to operateproperly. Have the system checked as soon as possible.
Factory Mode Contact Dealer
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Aviator (CTV) Canada/United States of America, enUSA, Edition date: 202007, Second-Printing Information Displays

Action
Message
The electric parking brake system has been put into a special mode that is used to allowservice of the rear brakes. Have the system checked as soon as possible.
Park Brake Maintenance Mode
The electric park brake system has detected a condition that requires service. Some function-ality may still be available. Have the system checked as soon as possible.
Park Brake Limited Function Service Required
The electric parking brake system has detected a condition that requires service. Have thesystem checked as soon as possible.
Park Brake Malfunction Service Now
Applying the park brake numerous times has overheated the system. Wait 2 minutes beforeattempting to apply again.
Park Brake System Overheated
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Aviator (CTV) Canada/United States of America, enUSA, Edition date: 202007, Second-Printing Information Displays

WHAT IS THE CABIN AIR FILTER
The cabin air filter improves the quality of air
in your vehicle by trapping dust, pollen and
other particles.
REPLACING THE CABIN AIR FILTER
Replace the filter at regular intervals. See
Scheduled Maintenance (page 564).
The cabin air filter is behind the glove
compartment.
To remove the lower glove compartment and
access the filter:
1. Open the glove compartment. 2. Press the tab on each side.
3. Fully lower the glove compartment.
4. Pull the glove compartment toward you.
WHAT IS AUTO AIR REFRESH
(IF
EQUIPPED)
Auto Air Refresh helps improve or maintain
the quality of air within your vehicle cabin. HOW DOES AUTO AIR REFRESH
WORK
(IF EQUIPPED)
Auto Air Refresh uses an outside gases
sensor to automatically adjust the climate
control system to change from outside air to
recirculated air to help reduce the entry of
outside odors into the cabin. It uses a
particulate matter sensor in the cabin to
estimate and provide information about
particulate matter pollution in the cabin. It
also allows you to refresh the cabin air with
outside air on-demand or automatically.
CHECKING THE INTERIOR AIR
QUALITY
(IF EQUIPPED) Press the button on touchscreen
feature bar to see current cabin
PM2.5 information.
Note: You can also press the menu button
on the climate control unit and then press
PM2.5 on the touchscreen.
Press
Cabin Air History to see a recent
history of average PM2.5 in the cabin.
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Aviator (CTV) Canada/United States of America, enUSA, Edition date: 202007, Second-Printing Interior Air QualityE311296 E283817

•
Keep the tires properly inflated and only
use the recommended size.
• Aggressive driving increases the amount
of energy required to move your vehicle.
In general, you can achieve better fuel
economy with mild to moderate
acceleration and deceleration. Moderate
braking is particularly important since it
allows you to maximize the energy
captured by the regenerative braking
system.
Additional Tips:
• Do not carry extra loads.
• Be mindful of adding external
accessories that may increase
aerodynamic drag.
• Observe posted speed limits.
• Perform all scheduled maintenance.
• There is no need to wait for your engine
to warm up. The vehicle is ready to drive
immediately after starting. PLUG-IN HYBRID VEHICLE
OPERATION
Regularly plug in your vehicle to get optimal
electric-only range capability from the high
voltage battery. Charging your vehicle adds
electrical energy. This energy propels the
vehicle.
Estimated electric-only driving range shows
in blue next to the gasoline range on the
information display.
The system maximizes the use of
electric-only operation in normal drive mode.
System conditions could require the engine
to operate, however, the system uses the
available electric range whenever possible.
In Pure EV drive mode, your vehicle only
uses electric power unless you enable the
engine, or system conditions require the
engine to operate.
Preserve EV drive mode saves the electric
range for later use. If you select this mode
and the battery is at full or near full charge,
it uses some electric-only range to discharge
the battery. This allows the regenerative
braking system to fully operate. If the battery
charge is low when selecting Preserve EV
mode, the engine charges the high voltage
battery to a minimum level. This provides
additional electric driving range. When the
battery charges to this level, Preserve EV
saves the electric range for later use.
Other drive modes appropriately make use
of electric power to help deliver the selected
drive mode experience. It could use available
electric-only range, if needed. See Drive
Mode Control (page 329).
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Aviator (CTV) Canada/United States of America, enUSA, Edition date: 202007, Second-Printing Unique Driving Characteristics

Answer
Question
In order to make sure that the climate control system can begin heatingthe cabin or defrosting the windshield as soon as you request it, the engine coolant temperature has to be kept sufficiently hot. Keeping
the engine on is required to maintain the correct coolant temperature.
Why does my engine stay on when it is extremely cold outside?
Your hybrid vehicle can use E15 fuel (15% ethanol, 85% gasoline), butyou could notice slightly reduced fuel economy because ethanol
contains less energy per gallon than gasoline. Your hybrid vehicle is not designed to use E85 (85% ethanol).
Can I put E15 or E85 in my vehicle, and how will it affect my fuel
economy?
The high voltage battery system is designed to last the life of thevehicle and requires no maintenance.
How long will my high voltage battery last? Does it need maintenance?
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Aviator (CTV) Canada/United States of America, enUSA, Edition date: 202007, Second-Printing Unique Driving Characteristics

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