brake LINCOLN NAUTILUS 2021 Manual Online

Protected Component
Fuse Rating
Fuse Number
Not used.
–
71
Not used.
—
72
Rear heated seats.
20 A
73
Driver seat module.
30 A
74
Windshield wiper motor.
25 A
75
Power liftgate module.
30 A
76
Climate controlled seat module.
30 A
77
Trailer tow.
40 A
78
Blower motor.
40 A
79
Not used.
—
80
110 V inverter.
40 A
81
Not used.
–
82
Not used.
—
83
Starter motor solenoid.
30 A
84
Not used.
—
85
Anti-lock brake system pump.
60 A
87
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2021 Nautilus (CD9) Canada/United States of America, enUSA, Edition date: 202011, First-Printing Fuses

MAINTENANCE PRECAUTIONS
Service your vehicle regularly to help
maintain its roadworthiness and resale value.
There is a large network of authorized
dealers that are there to help you with their
professional servicing expertise. We believe
that their specially trained technicians are
best qualified to service your vehicle properly
and expertly. They are supported by a wide
range of highly specialized tools developed
specifically for servicing your vehicle.
If your vehicle requires professional service,
an authorized dealer can provide the
necessary parts and service. Check your
warranty information to find out which parts
and services are covered.
Use only recommended fuels, lubricants,
fluids and service parts conforming to
specifications. See Capacities and
Specifications (page 398).
• Do not work on a hot engine.
• Make sure that nothing gets caught in
moving parts. •
Do not work on a vehicle with the engine
running in an enclosed space, unless you
are sure you have enough ventilation.
• Keep all open flames and other burning
material, such as cigarettes, away from
the battery and all fuel related parts.
• Set the parking brake, shift the
transmission to park (P) and block the
wheels.
OPENING AND CLOSING THE
HOOD
Opening the Hood 1. Inside the vehicle, pull the hood release
handle located under the left-hand side
of the instrument panel. 2. Slightly lift the hood.
3. Release the hood latch by pushing the
secondary release lever to your left-hand
side.
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Engine coolant reservoir. See Checking the Coolant (page 340).
A
Engine oil dipstick.
See Engine Oil Dipstick Overview (page 338).
B
Engine oil filler cap.
See Adding Engine Oil (page 338).
C
Brake fluid reservoir.
See Checking the Brake Fluid (page 218).
D
Battery.
See Changing the 12V Battery (page 345).
E
Power distribution box.
See Accessing the Under Hood Fuse Box (page 316).
F
Air filter.
See Changing the Engine Air Filter (page 344).
G
Windshield washer fluid reservoir.
See Adding Washer Fluid (page 118).
H
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2021 Nautilus (CD9) Canada/United States of America, enUSA, Edition date: 202011, First-Printing Maintenance

Engine coolant reservoir. See Checking the Coolant (page 340).
A
Brake fluid reservoir.
See Checking the Brake Fluid (page 218).
B
Battery.
See Changing the 12V Battery (page 345).
C
Power distribution box.
See Accessing the Under Hood Fuse Box (page 316).
D
Air filter assembly.
See Changing the Engine Air Filter (page 344).
E
Engine oil dipstick.
See Engine Oil Dipstick Overview (page 338).
F
Engine oil filler cap.
See Adding Engine Oil (page 338).
G
Windshield washer fluid reservoir.
See Adding Washer Fluid (page 118).
H
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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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3. If this is not possible, wait for a short
period of time for the engine to cool.
4. Check the coolant level. If the coolant level is at or below the minimum mark,
add prediluted coolant immediately.
5. When the engine temperature cools, you
can re-start the engine. Have your vehicle
checked as soon as possible to minimize
engine damage.
Note: Driving your vehicle without repair
increases the chance of engine damage.
Engine Coolant Temperature
Management (If Equipped) WARNING:
To reduce the risk of
crash and injury, be prepared that the
vehicle speed may reduce and the vehicle
may not be able to accelerate with full
power until the coolant temperature
reduces. If you tow a trailer with your vehicle, the
engine may temporarily reach a higher
temperature during severe operating
conditions, for example ascending a long or
steep grade in high ambient temperatures.
At this time, you may notice the coolant
temperature gauge moves toward the red
zone and a message may appear in the
information display.
You may notice a reduction in vehicle speed
caused by reduced engine power in order
to manage the engine coolant temperature.
Your vehicle may enter this mode if certain
high-temperature and high-load conditions
take place. The amount of speed reduction
depends on vehicle loading, grade and
ambient temperature. If this occurs, there is
no need to stop your vehicle. You can
continue to drive.
The air conditioning may automatically turn
on and off during severe operating
conditions to protect the engine from
overheating. When the coolant temperature
decreases to the normal operating
temperature, the air conditioning turns on. If the coolant temperature gauge moves fully
into the red zone, or if the coolant
temperature warning or service engine soon
messages appear in your information display,
do the following:
1.
Stop your vehicle as soon as it is safe to
do so. Fully apply the parking brake, shift
into park (P) or neutral (N).
2. Leave the engine running until the coolant temperature gauge needle
returns to the normal position. If the
temperature does not drop after several
minutes, follow the remaining steps.
3. Switch the engine off and wait for it to cool. Check the coolant level.
4. If the coolant level is at or below the minimum mark, add prediluted coolant
immediately.
5. If the coolant level is normal, restart the engine and continue.
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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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EXTERIOR BULBS
Exterior Bulb Specification Chart
Power (Watt)
Specification
Lamp
LED
LED
Brake and rear lamp.
LED
LED
Central high mounted brake lamp.
PWM/LED
H15/LED
Daytime running lamps.
LED
LED
Front fog lamp.
21
WY21W
Front turn signal lamp.
LED
LED
Front side marker lamp.
LED
LED
Front signature lamp.
LED
LED
Headlamp high beam.
LED
LED
Headlamp low beam.
LED
LED
High-intensity discharge headlamps.
5
W5W
License plate lamp.
LED
LED
Rear turn signal lamp.
LED
LED
Rear side marker lamp.
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2021 Nautilus (CD9) Canada/United States of America, enUSA, Edition date: 202011, First-Printing Maintenance

Cleaning Wheels
Only use a recommended wheel and tire
cleaner to clean the wheels weekly. For
additional information and assistance, we
recommend that you contact an authorized
dealer.
1.
Use a sponge to remove heavy deposits
of dirt and brake dust.
2. Rinse well after cleaning.
Note: Do not apply a cleaning chemical to
warm or hot wheel rims and covers.
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 parking your vehicle.
This reduces the risk of corrosion of the
brake discs, brake pads and linings.
Do not clean the wheels when they are hot.
Note: Some car washes could damage
wheel rims and covers.
Note: Using non-recommended cleaners,
harsh cleaning products, chrome wheel
cleaners or abrasive materials could
damage wheel rims and covers. Cleaning the Engine Compartment
Use a vacuum cleaner to remove debris from
the screen area below windshield.
Note:
If you are not familiar with the parts
around the engine do not wash the engine
compartment. Avoid frequent engine
washes.
When washing the engine compartment:
• Never wash or rinse the engine while it
is hot or running.
• Never wash or rinse any ignition coil,
spark plug wire or spark plug well.
• Cover the battery, power distribution box,
and air filter assembly to prevent water
damage.
Note: If your vehicle has an engine cover
remove the cover before application of
shampoo and degreaser.
• Spray an approved engine shampoo and
degreaser on all parts that require
cleaning and rinse with water. Cleaning Stripes or Graphics
It is recommended to wash your vehicle by
hand however, pressure washing may be
used under the following conditions:
•
Use a spray with a 40° wide spray angle
pattern.
• Keep the nozzle at a 12 in (305 mm)
distance and 90° angle to your vehicle's
surface.
• Do not use water pressure higher than
2,000 psi (14,000 kPa)
.
• Do not use water hotter than 179°F (82°C).
Note: Holding the pressure washer nozzle
at an angle to the vehicle's surface may
damage graphics and cause the edges to
peel away from the vehicle's surface.
Cleaning Camera Lenses and Sensors
We recommend that you only use lukewarm
or cold water and a soft cloth to clean the
camera lens and sensors.
Note: Do not pressure wash camera lens
and sensors.
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2021 Nautilus (CD9) Canada/United States of America, enUSA, Edition date: 202011, First-Printing Vehicle Care

PREPARING YOUR VEHICLE FOR
STORAGE
If you plan on storing your vehicle for 30
days or more, the following maintenance
recommendations ensures your vehicle stays
in good operating condition.
Under various conditions, long-term storage
may lead to degraded engine performance
or failure unless you use specific precautions
to preserve your vehicle.
General
•
Store all vehicles in a dry, ventilated
place.
• If vehicles are stored outside, they
require regular maintenance to protect
against rust and weather damage.
• Make sure all linkages, cables, levers and
pins under your vehicle are covered with
grease to prevent rust. •
Move vehicles at least 25 ft (7.5 m) every
15 days to lubricate working parts and
prevent corrosion.
• Fill the fuel tank with high-quality fuel
until the first automatic shutoff of the fuel
pump nozzle.
Engine
• Change the engine oil and filter prior to
storage because used engine oil contains
contaminants which may cause engine
damage.
• Start the engine every 15 days for a
minimum of 15 minutes. Run at fast idle
with the climate controls set to defrost
until the engine reaches normal
operating temperature.
• With your foot on the brake, shift through
all the gears while the engine is running. Body
•
Wash your vehicle thoroughly to remove
dirt, grease, oil, tar or mud from exterior
surfaces, rear-wheel housings and the
underside of front fenders.
• Periodically wash your vehicle if it is
stored in exposed locations.
• Touch-up exposed or primed metal to
prevent rust.
• Cover chrome and stainless steel parts
with a thick coat of auto wax to prevent
discoloration. Re-wax as necessary when
you wash your vehicle.
• Lubricate all hood, door and luggage
compartment hinges and latches with a
light grade oil.
• Cover interior trim to prevent fading.
• Keep all rubber parts free from oil and
solvents.
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2021 Nautilus (CD9) Canada/United States of America, enUSA, Edition date: 202011, First-Printing Storing Your Vehicle