2021 LINCOLN NAUTILUS reset

FUEL AND REFUELING –
TROUBLESHOOTING
Fuel and Refueling – Warning Lamps
If it illuminates when you are
driving, refuel as soon as possible.
Fuel and Refueling – Information
Messages
Refueling System Warning
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.
6. Remove any debris from the fuel tank filler valve.
7. Fully insert a fuel pump nozzle or the fuel
filler funnel provided with your vehicle
into the fuel filler pipe. See Locating the
Fuel Filler Funnel (page 198). This action
should dislodge any debris that may be
preventing the fuel tank filler valve from
fully closing.
8. Remove the fuel pump nozzle or fuel filler
funnel from the fuel filler pipe.
9. Fully close the fuel filler door.
Note: The message may not immediately
reset. If the message continues to appear
and a warning lamp illuminates, have your
vehicle checked as soon as possible.
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2021 Nautilus (CD9) Canada/United States of America, enUSA, Edition date: 202011, First-Printing Fuel and Refueling

Note:
If the detected object is 12 in (30 cm)
or less from your vehicle, visual indication
remains on.
SIDE PARKING AID
What is the Side Parking Aid
The front and rear outermost parking aid
sensors map objects that are near to the
sides of your vehicle.
Side Parking Aid Limitations
The sensor coverage is up to
24 in (60 cm)
from the sides of your vehicle.
The side parking aid may not function if:
• You switch your vehicle on, off and back
on within a few seconds.
• Your vehicle remains stationary for over
two minutes.
• The anti-lock brake system activates.
• The traction control system activates. •
Your vehicle is in park (P).
• The steering wheel angle information is
not available. You must drive at least
492 ft (150 m) above 19 mph (30 km/h) to
reset the steering wheel angle
information.
Note: If you switch traction control off, the
side sensing system also turns off.
To reinitialize the system, drive the length of
your vehicle.
The side parking aid does not detect an
object that is moving toward the side of your
vehicle, for example another vehicle moving
at a low speed, if it does not pass a front or
rear parking aid sensor.
If the transmission is in reverse (R), the side
sensing system provides audible warnings.
When your vehicle is moving slowly,
obstacles are detected within
24 in (60 cm)
and are inside the driving path of your
vehicle. Once your vehicle reaches a
standstill condition, the audible warning
stops after a few seconds. Visual indication
is always present in reverse (R). If your vehicle is in neutral (N), the side
sensing system provides visual indication
only when your vehicle is moving slowly and
there is a front or rear park aid obstacle
detected, and the side obstacle is within
24 in (60 cm)
from the side of your vehicle.
Once your vehicle reaches a stop, the visual
indication stops after a few seconds.
If the transmission is in drive (D) or any other
forward gear, the side sensing system
provides audible and visual warnings. When
your vehicle is moving slowly, obstacles are
detected within
24 in (60 cm) and are inside
the driving path of your vehicle. Once your
vehicle reaches a standstill condition, the
audible warning and visual indication stops
after a few seconds.
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2021 Nautilus (CD9) Canada/United States of America, enUSA, Edition date: 202011, First-Printing Parking Aids

DRIVER ALERT LIMITATIONS
Driver alert may not function correctly if:
•
The sensor cannot track the road lane
markings.
• Your vehicle's speed is less than
approximately 40 mph (65 km/h). SWITCHING DRIVER ALERT ON
AND OFF
1. Using the instrument cluster display
controls on the steering wheel, select
SETTINGS
.
2. Select
Driver assistance.
3. Switch
Driver alert on or off. Note:
The system remains on or off
depending on how it was last set.
Resetting Driver Alert
You can reset the system by either:
• Switching the ignition off and on.
• Stopping the vehicle and then opening
and closing the driver door.
DRIVER ALERT – TROUBLESHOOTING
Driver Alert – Information Messages Action
Message
Stop and rest as soon as it is safe to do so.
Driver Alert Warning Rest Now
Take a rest soon.
Driver Alert Warning Rest Suggested
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2021 Nautilus (CD9) Canada/United States of America, enUSA, Edition date: 202011, First-Printing Driver Alert

WARNING: Do not add engine oil
when the engine is hot. Failure to follow
this instruction could result in personal
injury.
Do not use supplemental engine oil additives
because they are unnecessary and could
lead to engine damage that the vehicle
warranty may not cover.
1. Clean the area surrounding the engine oil filler cap before you remove it.
2. Remove the engine oil filler cap.
3. Add engine oil that meets our specifications.
See Capacities and
Specifications (page 402).
4. Reinstall the engine oil filler cap. Turn it clockwise until you feel a strong
resistance.
Note: Do not add oil further than the
maximum mark. Oil levels above the
maximum mark may cause engine damage.
Note: Immediately soak up any oil spillage
with an absorbent cloth. Resetting the Engine Oil Change
Reminder
Use the information display controls on the
steering wheel to reset the oil change
indicator.
From the main menu scroll to:
Action and description
Message
Press the right arrow button,
then from this menu scroll to
the following message.
Settings
Press the right arrow button,
then from this menu scroll to
the following message.
Vehicle
Press the right arrow button,
then from this menu scroll to
the following message.
Oil Life
Press and hold the OK button
until the instrument cluster
displays the following
message.
Hold OK to
Reset
Reset Successful Action and description
Message
When the oil change indicator
resets the instrument cluster
displays 100%.
Remaining Life
{00}%
If the instrument cluster
displays one of the following
messages, repeat the
process.
Not Reset
Reset Cancelled
Engine Oil Capacity and Specification
For filling information, please refer to the
Capacities and Specifications section of your
owner's manual.
See Engine Oil Capacity
and Specification (page 404).
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2021 Nautilus (CD9) Canada/United States of America, enUSA, Edition date: 202011, First-Printing Maintenance

Fail-Safe Cooling
Fail-safe cooling allows you to temporarily
drive your vehicle before any incremental
component damage occurs. The fail-safe
distance depends on ambient temperature,
vehicle load and terrain.
How Fail-Safe Cooling Works
If the engine begins to overheat,
the coolant temperature gauge
moves toward the red zone:
A warning lamp illuminates and a
message may appear in the
information display.
If the engine reaches a preset
over-temperature condition, the engine
automatically switches to alternating cylinder
operation. Each disabled cylinder acts as an
air pump and cools the engine.
When this occurs, your vehicle still operates,
however:
• Engine power is limited.
• The air conditioning system turns off. Continued operation increases the engine
temperature, causing the engine to
completely shut down. Your steering and
braking effort increases in this situation.
When the engine temperature cools, you can
re-start the engine. Have your vehicle
checked as soon as possible to minimize
engine damage.
When Fail-Safe Mode Is Activated
WARNING: Fail-safe mode is for use
during emergencies only. Operate your
vehicle in fail-safe mode only as long as
necessary to bring your vehicle to rest in
a safe location and seek immediate repairs.
When in fail-safe mode, your vehicle will
have limited power, will not be able to
maintain high-speed operation, and may
completely shut down without warning,
potentially losing engine power, power
steering assist, and power brake assist,
which may increase the possibility of a
crash resulting in serious injury. WARNING: Do not remove the
coolant reservoir cap when the engine is
on or the cooling system is hot. Wait 10
minutes for the cooling system to cool
down. Cover the coolant reservoir cap with
a thick cloth to prevent the possibility of
scalding and slowly remove the cap.
Failure to follow this instruction could result
in personal injury.
Your vehicle has limited engine power when
in the fail-safe mode, drive your vehicle with
caution. Your vehicle does not maintain
high-speed operation and the engine could
operate poorly.
Remember that the engine is capable of
automatically shutting down to prevent
engine damage. In this situation:
1. Pull off the road as soon as safely possible and switch the engine off.
2. If you are a member of a roadside assistance program, we recommend that
you contact your roadside assistance
service provider.
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2021 Nautilus (CD9) Canada/United States of America, enUSA, Edition date: 202011, First-Printing Maintenance

If you disconnect or replace the battery and
your vehicle has an automatic transmission,
it must relearn its adaptive strategy. Because
of this, the transmission may shift firmly when
first driven. This is normal operation while
the transmission fully updates its operation
to optimum shift feel.
Remove and Reinstall the Battery
To disconnect or remove the battery, do the
following:
1. Apply the parking brake and switch the
ignition off.
2. Switch all electrical equipment off, for example lights and radio.
3. Wait a minimum of two minutes before disconnecting the battery.
Note: The engine management system has
a power hold function and remains powered
for a period of time after you switch the
ignition off. This is to allow diagnostic and
adaptive tables to be stored. Disconnecting
the battery without waiting can cause
damage not covered by the vehicle
Warranty. 4. Disconnect the negative battery cable
terminal.
5. Disconnect the positive battery cable terminal.
6. Remove the battery securing clamp.
7. Remove the battery.
8. To install, reverse the removal procedure.
Note: Before reconnecting the battery, make
sure the ignition remains switched off.
Note: Make sure the battery cable terminals
are fully tightened.
Note: After cleaning or replacing the battery,
make sure you reinstall the battery cover or
shield.
If you disconnect or replace the vehicle
battery, you must reset the following
features:
• Window bounce-back. See Windows
(page 130).
• Clock Settings.
• Pre-set radio stations.
• Steering Angle Sensor. Note:
To calibrate the steering angle sensor,
drive the vehicle above
30 mph (50 km/h)
for a minimum of 1.2 mi (2 km). Make sure to
drive straight ahead for a minimum of 30
seconds. Several vehicle functions are
disabled and a warning light could appear
until the sensor is calibrated.
Battery Management System
The battery management system monitors
battery conditions and takes actions to
extend battery life. If excessive battery drain
is detected, the system temporarily disables
some of the following features:
• Heated rear window.
• Heated seats.
• Climate control.
• Heated steering wheel.
• Audio unit.
• Navigation system.
A message may appear in the information
display to alert you that battery protection
actions are active.
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2021 Nautilus (CD9) Canada/United States of America, enUSA, Edition date: 202011, First-Printing Maintenance

Hybrid Battery Systems
We recommend the following actions for your
vehicle:
•
When storing your vehicle for greater
than 30 days the state of charge should
be approximately 50%. Additionally we
recommend disconnecting the 12V
battery which will reduce system loads
on the HV battery.
12 Volt Battery
• Check and recharge as necessary. Keep
connections clean.
Note: It is necessary to reset memory
features if you disconnect the battery cables.
Brakes
Make sure the brakes and parking brake
release fully.
Note: If you intend on parking your vehicle
for an extended period after cleaning the
wheels with a wheel cleaner, drive your
vehicle for a few minutes before doing so to
reduce the risk of increased corrosion of the
brake discs, brake pads and linings. Tires
•
Maintain recommended air pressure.
Note: If you intend on parking your vehicle
for an extended period after cleaning the
wheels with a wheel cleaner, drive your
vehicle for a few minutes before doing so.
This reduces the risk of corrosion of the
brake discs, brake pads and linings.
REMOVING YOUR VEHICLE FROM
STORAGE
When your vehicle is ready to come out of
storage, do the following:
• We recommend that you change the
engine oil before you use your vehicle
again.
• Wash your vehicle to remove any dirt or
grease film build-up on window surfaces.
• Check windshield wipers for any
deterioration.
• Check under the hood for any foreign
material that may have collected during
storage such as mice or squirrel nests. •
Check the exhaust for any foreign
material that may have collected during
storage.
• Check tire pressures and set tire inflation
per the Tire Label.
• Check brake pedal operation. Drive your
vehicle 15 ft (4.5 m) back and forth to
remove rust build-up.
• Check fluid levels (including coolant, oil
and gas) to make sure there are no leaks,
and fluids are at recommended levels.
• If you remove the battery, clean the
battery cable ends and check for
damage.
Contact an authorized dealer if you have any
concerns or issues.
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2021 Nautilus (CD9) Canada/United States of America, enUSA, Edition date: 202011, First-Printing Storing Your Vehicle

Highway Hazards
No matter how carefully you drive, there
is always the possibility that you could
eventually have a flat tire on the
highway. Drive slowly to the closest safe
area out of traffic. This could further
damage the flat tire, but your safety is
more important.
If you feel a sudden vibration or ride
disturbance while driving, or you suspect
your tire or vehicle has been damaged,
immediately reduce your speed. Drive
with caution until you can safely pull off
the road. Stop and inspect the tires for
damage. If a tire is under-inflated or
damaged, deflate it, remove the wheel
and replace it with your spare tire and
wheel. If you cannot detect a cause,
have the vehicle towed to the nearest
repair facility or tire dealer to have the
vehicle inspected.
Tire and Wheel Alignment
A bad jolt from hitting a curb or pothole
can cause the front end of your vehicle
to become misaligned or cause damage
to your tires. If your vehicle seems to
pull to one side when you are driving,
the wheels could be out of alignment.
Have an authorized dealer check the
wheel alignment periodically.
Wheel misalignment in the front or the
rear can cause uneven and rapid
treadwear of your tires and should be
corrected by an authorized dealer.
INSPECTING THE WHEEL VALVE
STEMS
Check the valve stems for holes, cracks,
or cuts that could permit air leakage.
TIRE ROTATION WARNING: If the tire label shows
different tire pressures for the front
and rear tires and the vehicle has a
tire pressure monitoring system, then
you need to update the settings for
the system sensors. Always perform
the system reset procedure after tire
rotation. If you do not reset the system,
it may not provide a low tire pressure
warning when necessary.
Rotating your tires at the recommended
interval will help your tires wear more
evenly, providing better tire performance
and longer tire life.
Note: If your tires show any uneven
wear have the alignment checked by
an authorized dealer before rotating
tires.
Note: If you have a dissimilar spare
wheel and tire assembly, it is intended
for temporary use only and should not
be used in a tire rotation.
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2021 Nautilus (CD9) Canada/United States of America, enUSA, Edition date: 202011, First-Printing Tire Care