fuel LINCOLN NAUTILUS 2021 Service Manual

Protected Component
Fuse Rating
Fuse Number
Fuel pump relay.
—
42
Right-hand high beam and stoplamp.
15 A
43
Not used.
—
44
Not used.
—
45
Not used.
—
46
Not used.
—
47
Left-hand high beam and stoplamp.
15 A
48
Not used.
—
49
Horn.
20 A
50
Not used.
—
51
Not used.
—
52
Massaging seats.
10 A
53
Brake on-off switch.
10 A
54
Alternator A-line.
10 A
55
Not used.
—
86
322
2021 Nautilus (CD9) Canada/United States of America, enUSA, Edition date: 202011, First-Printing Fuses

Protected Component
Fuse Rating
Fuse Number
Not used.
—
56
Not used.
—
57
Fuel pump feed.
30 A
58
Electronic fan 3.
40 A
59
Electronic fan 1.
40 A
60
Not used.
—
61
Body control module 1.
50 A
62
Electronic fan 2.
25 A
63
Not used.
—
64
Front heated seat.
20 A
65
Not used (spare).
15 A
66
Body control module 2.
50 A
67
Heated rear window.
40 A
68
Anti-lock brake system valves.
30 A
69
Passenger seat.
30 A
70
324
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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2021 Nautilus (CD9) Canada/United States of America, enUSA, Edition date: 202011, First-Printing MaintenanceE142457 E267365

CHANGING THE ENGINE AIR
FILTER
WARNING: To reduce the risk of
vehicle damage and personal burn injuries,
do not start your engine with the air
cleaner removed and do not remove it
while the engine is running.
When changing the air filter element, use
only the air filter element listed.
See
Capacities and Specifications (page 400).
For turbocharged equipped vehicles: When
servicing the air cleaner, it is important that
no foreign material enter the air induction
system. The engine and turbocharger are
susceptible to damage from even small
particles.
Change the air filter element at the proper
interval. See Scheduled Maintenance (page
459
). Note:
Failure to use the correct air filter
element may result in severe engine
damage. The customer warranty may be
void for any damage to the engine if the
correct air filter element is not used. 1. Release the clamps that secure the air
filter housing cover.
2. Carefully lift the air filter housing cover.
3. Remove the air filter element from the air
filter housing.
4. Wipe any dirt or debris from the air filter housing and cover to make sure no dirt
gets in the engine and to make sure you
have a good seal. 5.
Install a new air filter element. Be careful
not to crimp the filter element edges
between the air filter housing and cover.
This could cause filter damage and allow
unfiltered air to enter the engine if not
properly seated.
6. Install the air filter housing cover.
7. Engage the clamps to secure the air filter
housing cover to the air filter housing.
CHANGING THE FUEL FILTER
Your vehicle has a lifetime fuel filter that
integrates with the fuel tank. It does not need
regular maintenance or replacement.
344
2021 Nautilus (CD9) Canada/United States of America, enUSA, Edition date: 202011, First-Printing MaintenanceE144365

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.
361
2021 Nautilus (CD9) Canada/United States of America, enUSA, Edition date: 202011, First-Printing Storing Your Vehicle

WHAT IS THE TIRE PRESSURE
MONITORING SYSTEM
Individual Tire Pressure Monitoring S
ystem
The tire pressure monitoring
system measures the vehicle's tire
pressures. A warning lamp
illuminates if one or more tires are
significantly underinflated or if there is a
system malfunction.
TIRE PRESSURE MONITORING
SYSTEM OVERVIEW WARNING: If the tire pressure
monitor sensor becomes damaged it may
not function. WARNING:
Under-inflation is the
most common cause of tire failures and
may result in severe tire cracking, tread
separation or blowout, with unexpected
loss of vehicle control and increased risk
of injury. Under-inflation increases sidewall flexing and rolling resistance, resulting in
heat buildup and internal damage to the
tire. It also may result in unnecessary tire
stress, irregular wear, loss of vehicle
control and accidents. A tire can lose up
to half of its air pressure and not appear
to be flat!
WARNING:
Do not use the tire
pressure displayed in the information
display as a tire pressure gauge. Failure to
follow this instruction could result in
personal injury or death. WARNING:
To determine the
required pressure(s) for your vehicle, see
the Safety Compliance Certification Label
(on the door hinge pillar, door-latch post
or the door edge that meets the door-latch
post, next to the driver seat) or the Tire
Label on the B-Pillar or the edge of the
driver door. Each tire, including the spare (if provided),
should be checked monthly when cold and
inflated to the inflation pressure
recommended by the vehicle manufacturer
on the vehicle placard or tire inflation
pressure label. (If your vehicle has tires of a
different size than the size indicated on the
vehicle placard or tire inflation pressure label,
you should determine the proper tire inflation
pressure for those tires).
As an added safety feature, your vehicle has
been equipped with a Tire Pressure
Monitoring System (TPMS) that illuminates a
low tire pressure telltale when one or more
of your tires is significantly under-inflated.
Accordingly, when the low tire pressure
telltale illuminates, you should stop and
check your tires as soon as possible, and
inflate them to the proper pressure. Driving
on a significantly under-inflated tire causes
the tire to overheat and can lead to tire
failure. Under-inflation also reduces fuel
efficiency and tire tread life, and may affect
the vehicle
’s handling and stopping ability.
385
2021 Nautilus (CD9) Canada/United States of America, enUSA, Edition date: 202011, First-Printing Tire Pressure Monitoring System

WARNING: Park your vehicle so that
you do not obstruct the flow of traffic or
place yourself in any danger and set up a
warning triangle. WARNING:
Do not get under a
vehicle that is only supported by a vehicle
jack. WARNING: Do not attempt to change
a tire on the side of the vehicle close to
moving traffic. Pull far enough off the road
to avoid the danger of being hit when
operating the jack or changing the wheel. WARNING:
Use only the specified
jacking points. If you use other positions,
you may damage the body, steering,
suspension, engine, braking system or the
fuel lines. WARNING:
Always use the jack
provided as original equipment with your
vehicle. If using a jack other than the one
provided, make sure the jack capacity is
adequate for the vehicle weight, including
any vehicle cargo or modifications. If you
are unsure if the jack capacity is adequate,
contact the authorized dealer. WARNING:
The jack supplied with
this vehicle is only intended for changing
wheels. Do not use the vehicle jack other
than when you are changing a wheel in an
emergency. WARNING:
Make sure there is no
grease or oil on the threads or the surface
between the wheel lugs and nuts. This can
cause the lug nuts to loosen while driving. Note:
The jack does not require
maintenance or additional lubrication over
the service life of your vehicle.
Note: Passengers should not remain in your
vehicle when the vehicle is being jacked.
1. Park on a level surface, set the parking brake and activate the hazard flashers.
2. Place the transmission in park (P) and turn the engine off.
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2021 Nautilus (CD9) Canada/United States of America, enUSA, Edition date: 202011, First-Printing Changing a Road WheelE166722

ENGINE SPECIFICATIONS - 2.0L
Specification
Engine
10.0:1
Compression ratio.
122 in³ (2,000 cm³)
Displacement.
1-3-4-2
Firing order.
Coil on plug
Ignition system.
Minimum 87 octane
Required fuel.
0.028 in (0.7 mm) - 0.031 in (0.8 mm)
Spark plug gap.
398
2021 Nautilus (CD9) Canada/United States of America, enUSA, Edition date: 202011, First-Printing Capacities and Specifications

ENGINE SPECIFICATIONS - 2.7L
Specification
Engine
10.0:1
Compression ratio.
165 in³ (2,700 cm³)
Displacement.
1-4-2-5-3-6
Firing order.
Coil on plug
Ignition system.
Minimum 87 octane
Required fuel.
0.028 in (0.7 mm) - 0.031 in (0.8 mm)
Spark plug gap.
399
2021 Nautilus (CD9) Canada/United States of America, enUSA, Edition date: 202011, First-Printing Capacities and Specifications

ENGINE OIL CAPACITY AND
SPECIFICATION - 2.0L
Use oil that meets the defined specification
and viscosity grade.
If you do not use oil that meets the defined
specification and viscosity grade, it could
result in:
•
Component damage that your vehicle
warranty does not cover.
• Longer engine cranking periods.
• Increased emission levels. •
Reduced vehicle performance.
• Reduced fuel economy. An oil that displays this symbol conforms to
current engine, emission system and fuel
economy performance standards of ILSAC.
We recommend Motorcraft motor oil for your
vehicle. If Motorcraft oil is not available, use
motor oils of the recommended viscosity
grade that meet API SP requirements and
display the API Certification Mark for gasoline
engines.
Do not use supplemental engine oil additives
because they are unnecessary and could
lead to engine damage that your vehicle
warranty does not cover.
Capacities Including the Oil Filter
Variant
5.5 qt (5.2 L)
All.
402
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