2023 LINCOLN AVIATOR check engine

• Without applying the brake pedal, press
and release the button once when the
ignition is in the on mode, or when your
vehicle is running but is not moving.
On: All electrical circuits are operational and
the warning lamps and indicators illuminate.
• Without applying the brake pedal, press
and release the button once.
Start: Starts your vehicle. The engine may
not start when your vehicle starts.
• Press the brake pedal, and then press
the button for any length of time. An
indicator light on the button illuminates
when the ignition is on and when your
vehicle starts.
STARTING A GASOLINE ENGINE
When you start the engine, the idle speed
increases. This helps to warm up the
engine. If the engine idle speed does not
slow down, have your vehicle checked as
soon as possible.Note: You can crank the engine for a total
of 60 seconds without the engine starting
before the starting system temporarily
disables. The 60 seconds does not have to
be all at once. For example, if you crank the
engine three times for 20 seconds each time,
without the engine starting, you reached the
60-second time limit. A message appears
in the information display alerting you that
you exceeded the cranking time. You
cannot attempt to start the engine for at
least 15 minutes. After 15 minutes, you are
limited to a 15-second engine cranking time.
You need to wait 60 minutes before you can
crank the engine for 60 seconds again.
Before starting your vehicle, check the
following:
• Make sure all occupants have fastened
their seatbelts.
• Make sure the headlamps and electrical
accessories are off.
• Make sure the parking brake is on.
• Make sure the transmission is in park (P).
• Switch the ignition on.
Note:Do not touch the accelerator pedal.Note:You must have your intelligent access
key in your vehicle in order to shift the
transmission out of park (P).
1. Fully press the brake pedal.
2. Press the push button ignition switch.
The system does not function if:
• The passive key frequencies are jammed.
• The key battery has no charge.
If you are unable to start your vehicle, do the
following:
206
Starting and Stopping the Engine

STARTING A HYBRID ELECTRIC
VEHICLE SYSTEM
Before starting your vehicle, check the
following:
• Make sure all occupants fasten their
seatbelt.
• Make sure the headlamps and electrical
accessories are off.
• Make sure the parking brake is on.
• Put the transmission in park (P).
Note:Do not touch the accelerator pedal.
1. Fully press the brake pedal.
2. Press the push button ignition switch.
Note:The green ready indicator illuminates
letting you know that your vehicle is ready
for driving. Since your vehicle comes with a
silent key start, the engine may not start
when your vehicle starts. See Hybrid
Vehicle Operation (page 217).When the engine starts for the first time on
your drive, the idle speed increases, this
helps to warm up the engine. If the engine
idle speed does not slow down automatically,
have your vehicle checked by an authorized
dealer.
The system does not function if:
• The passive key frequencies are jammed.
• The key battery has no charge.
If you are unable to start your vehicle, do the
following:
E297378
210
Starting and Stopping the Engine

The heater acts as a starting aid by warming
the engine coolant. This allows the climate
control system to respond quickly. The
equipment includes a heater element
(installed in the engine block) and a wire
harness. You can connect the system to a
grounded 120-volt AC electrical source.
We recommend that you do the following for
a safe and correct operation:
• Use a 16-gauge outdoor extension cord
that is product certified by Underwriter’s
Laboratory (UL) or Canadian Standards
Association (CSA). This extension cord
must be suitable for use outdoors, in cold
temperatures, and be clearly marked
Suitable for Use with Outdoor
Appliances. Do not use an indoor
extension cord outdoors. This could
result in an electric shock or become a
fire hazard.
• Use as short an extension cord as
possible.
• Do not use multiple extension cords.• Make sure that when in operation, the
extension cord plug and heater cord plug
connections are free and clear of water.
This could cause an electric shock or fire.
• Make sure your vehicle is parked in a
clean area, clear of combustibles.
• Make sure the heater, heater cord and
extension cord are firmly connected.
• Check for heat anywhere in the electrical
hookup once the system has been
operating for approximately 30 minutes.
• Make sure the system is unplugged and
properly stowed before starting and
driving your vehicle. Make sure the
protective cover seals the prongs of the
block heater cord plug when not in use.
• Make sure the heater system is checked
for proper operation before winter.
Using the Engine Block Heater
The engine block heater receptacle terminals
are located on the left side of the engine
compartment.Make sure the receptacle terminals are clean
and dry prior to use. Clean them with a dry
cloth if necessary.
The heater uses 0.4 to 1.0 kilowatt-hours of
energy per hour of use. The system does not
have a thermostat. It achieves maximum
temperature after approximately three hours
of operation. Using the heater longer than
three hours does not improve system
performance and unnecessarily uses
electricity.
214
Starting and Stopping the Engine

3. Insert the fuel pump nozzle up to the first
notch on the nozzle A. Keep the fuel
pump nozzle resting on the fuel tank filler
pipe.
E139203
A
B
4. Hold the fuel pump nozzle in position B
when refueling. Holding the fuel pump
nozzle in position A can affect the flow
of fuel and shut off the fuel pump nozzle
before the fuel tank is full.
5. Operate the fuel pump nozzle within the
area shown.
E190819081
6. When the nozzle shuts off, wait at least
5 seconds, then slightly raise the fuel
pump nozzle and slowly remove it.
7. Fully close the fuel filler door.Do not attempt to start the engine if you have
filled the fuel tank with incorrect fuel.
Incorrect fuel use could cause damage that
the vehicle Warranty may not cover. See your
authorized dealer immediately.
Refueling System Warning (If Equipped)
If the fuel tank filler valve does not fully close,
a message could appear in the information
display.
Message
Check Fuel Fill Inlet
If the message appears, do the following:
1. Stop your vehicle as soon as it is safe to
do so and switch the engine off.
2. Shift into park (P) or neutral (N).
3. Apply the parking brake.
4. Fully open the fuel filler door.
5. Check the fuel tank filler valve for any
debris that may be restricting its
movement.
228
Fuel and Refueling

Action Message
Your vehicle has a sealed fuel
system that may be under
pressure. This information
message appears while the
fuel system is depressurizing
with the fuel filler door closed.
Wait for the fuel system to
depressurize and for the fuel
filler door to unlatch. Please wait
for fuel
door to
open
This information message
appears when the fuel system
depressurizes and the fuel
filler door opens. Fully open
the fuel filler door to refuel
and fully close the fuel filler
door when refueling is
complete. Fuel Door
Open
Your vehicle has a sealed fuel
system that requires the fuel
filler door to be fully closed
after refueling. This warning
message appears when the
fuel filler door is ajar. Please Fuel door
ajar Close
fully to
avoid
""Check
Engine""
Action Message
light fully close the fuel filler door
to avoid a "Check Engine"
Light.
If you see this message and
a "Check Engine" lamp illumin-
ates, please fully close the
fuel filler door. The "Check
Engine" Light should clear
within five seconds. If the
"Check Engine" light persists,
please see your dealer.
A warning message appears
in the information display
when the fuel system fails to
depressurize or the fuel filler
door fails to open. You may
have to use the fuel filler door
manual override lever. Refuel Error
See Manual
If the Refuel Error information message
appears, do the following:
1. Check the fuel filler door for anything that
may be obstructing its movement, for
example ice or snow.2. Remove any obstruction from the fuel
filler door.
3. Press the button on the left side of the
instrument panel to open the fuel filler
door.
4. If the fuel filler door fails to open and the
Refuel Error message remains in the
information display, use the fuel filler
door manual override lever.
Fuel Filler Door Manual Override Lever
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.
Note:The transmission must be in park (P)
or neutral (N).
When using the manual override lever do
the following:
1. Switch the ignition on.
232
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.
234
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

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
Engine Emission Control