2023 LINCOLN AVIATOR maintenance

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 as soon
as possible.
Low Washer Fluid
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Illuminates when the windshield
washer fluid is low.
Powertrain Fault
Illuminates when the system
detects a powertrain or an 4WD
fault. Have the system checked as
soon as possible.
Ready to Drive (If Equipped)
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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
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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
immediately. See Using Stability Control
(page 283).
Stability Control Off
E130458
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 283).
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Instrument Cluster

Lane Keeping System
Action Message
Displays when the system requires service. Have the system checked as soon as possible. Lane Keeping Sys. Malfunction Service
Required
Check to make sure there are no objects or debris blocking the camera. Have the system
checked if this condition persists. Front Camera Temporarily Not Available
Clean the windshield to improve visibility and allow the camera to properly operate. Front Camera Low Visibility Clean Screen
Displays when the system requires service. Have the system checked as soon as possible. Front Camera Malfunction Service Required
The system requests that you keep your hands on the steering wheel. Keep Hands on Steering Wheel
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 579). Change Engine Oil Soon
The engine oil life is low and needs to be changed immediately. See General Maintenance
Information (page 579). Oil Change Required
154
Information Displays

Park Brake
Action Message
The parking brake is set, the engine is running and you drive your vehicle more than 3 mph
(5 km/h). If the warning stays on after the parking brake is released, have the system checked
as soon as possible. Park Brake Engaged
The electric parking brake is set and a manual release is attempted without the brake pedal
being pressed. To Release: Press Brake and Switch
The electric parking brake is set and an automatic release is attempted but cannot be
performed. Perform a manual release. Park Brake Use Switch to Release
The electric parking brake is set and your vehicle speed exceeds 3 mph (5 km/h). Release
park brake before continued driving. Release Park Brake
The electric parking brake is not fully applied. Park Brake Not Applied
The electric parking brake is not fully released. Park Brake Not Released
The electric parking brake system has been put into a special mode to allow service of the
rear brakes. Have the system checked as soon as possible. Park Brake Maintenance Mode
158
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 579).
The cabin air filter is behind the glove
compartment.
To remove the lower glove compartment and
access the filter:
1. Open the glove compartment.
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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)
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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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Interior Air Quality

• 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 What Is
Drive Mode Control (page 343).
219
Unique Driving Characteristics

Answer Question
In order to make sure that the climate control system can begin heating
the 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), but
you 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 the
vehicle and requires no maintenance. How long will my high voltage battery last? Does it need maintenance?
222
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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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 366).
• 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
Engine Emission Control