2021 LINCOLN NAUTILUS maintenance

WHAT IS THE CATALYTIC
CONVERTER
The catalytic converter is part of your
vehicle's emissions system and filters harmful
pollutants from the exhaust gas.
CATALYTIC CONVERTER
PRECAUTIONS
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.
To avoid damaging the catalytic converter:
• 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 Precautions (page 309).
• Use the correct fuel.
See Fuel and
Refueling (page 197).
• 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: Do not make any unauthorized
changes to your vehicle or engine. By law,
vehicle owners and anyone who
manufactures, repairs, or services a fleet of
vehicles are not permitted to intentionally
remove an emission control device or
prevent it from working.
CATALYTIC CONVERTER –
TROUBLESHOOTING
Catalytic Converter – Warning Lamps
Your vehicle has an on-board diagnostics
system that monitors the emission control
system. If any of the following warning lamps
illuminate, this may indicate that the on-board
diagnostics system has detected an emission
control system malfunction.
204
2021 Nautilus (CD9) Canada/United States of America, enUSA, Edition date: 202011, First-Printing Catalytic Converter

The brake indicator momentarily
illuminates when you switch the
ignition on to confirm the lamp is
functional. It may also illuminate when you
apply the parking brake and the ignition is
on. If it illuminates when your vehicle is
moving, make sure the parking brake is
disengaged. If the parking brake is
disengaged, this indicates low brake fluid
level or a brake system fault. See an
authorized dealer. Brakes – Information Messages The brake fluid level
is low and the brake
system should be
inspected immedi-
ately. See Checking the Brake Fluid (page 218).
Brake Fluid Level
Low
The brake systemneeds servicing.
Stop the vehicle in a safe place. Contact an authorized dealer.
Check Brake System
Brakes – Frequently Asked Questions
Is brake dust on the wheels normal? Brake dust could accumulate on the
wheels, even under normal driving
conditions. Some dust is inevitable as
the brakes wear and does not contribute
to brake noise.
See Cleaning Wheels
(page 356). Will wet driving conditions effect my
braking abilities?
Wet brakes result in reduced braking
efficiency. Gently press the brake pedal
a few times when driving from a car
wash or standing water to dry the
brakes.
Is brake noise considered normal? Occasional brake noise is normal. If a
metal-to-metal, continuous grinding or
continuous squeal sound is present, the
brake linings may be worn-out and an
authorized dealer should check them.
If the vehicle has continuous vibration
or shudder in the steering wheel while
braking, an authorized dealer should
check your vehicle.
When should you replace the brake fluid? Brake fluid absorbs water over time
which degrades the effectiveness of the
brake fluid. Change the brake fluid at
the specified intervals to prevent
degraded braking performance.
See
Normal Scheduled Maintenance (page
463
).
220
2021 Nautilus (CD9) Canada/United States of America, enUSA, Edition date: 202011, First-Printing BrakesE270480

Electric Parking Brake – Information Messages
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, contact an authorized dealer 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 that is used to allow serviceof the rear brakes. Contact an authorized dealer.
Park Brake Maintenance Mode
The electric park brake system has detected a condition that requires service. Some functionalitymay still be available. Contact your authorized dealer.
Park Brake Limited Function Service
Required
The electric parking brake system has detected a condition that requires service. Contact your authorized dealer.
Park Brake Malfunction Service Now
223
2021 Nautilus (CD9) Canada/United States of America, enUSA, Edition date: 202011, First-Printing Electric Parking Brake

CONNECTING A TRAILER
PRECAUTIONS
WARNING: Do not adjust the spring
bars so that your vehicle's rear bumper is
higher than before attaching the trailer.
Doing so will defeat the function of the
weight-distributing hitch, which may cause
unpredictable handling, and could result
in serious personal injury.
Do not tow a trailer until you drive your
vehicle at least
1,000 mi (1,600 km).
Do not use a hitch that either clamps onto
the bumper or attaches to the axle. You must
distribute the load in your trailer so that
10-15% of the total weight of the trailer is on
the trailer coupler.
Consult your local motor vehicle laws for
towing a trailer.
See the instructions included with towing
accessories for the proper installation and
adjustment specifications. Service your vehicle more frequently if you
tow a trailer.
See Normal Scheduled
Maintenance (page 463).
If you use a rental trailer, follow the
instructions the rental agency gives you.
When attaching the trailer wiring connector
to your vehicle, only use a proper fitting
connector that works with the vehicle and
trailer functions.
Account for the trailer coupler weight as part
of your vehicle load when calculating the
total vehicle weight.
Do not exceed the load limits.
See
Calculating the Load Limit (page 291). CONNECTING A TRAILER
Trailer Towing Connector
(If Equipped) When attaching the trailer wiring connector
to your vehicle, only use a proper fitting
connector that works with the vehicle and
trailer functions.
Note:
Install the waterproof protection cap
back onto the trailer towing connector
whenever it is not in use. This helps to
prevent water damage and trailer towing
connector malfunction.
297
2021 Nautilus (CD9) Canada/United States of America, enUSA, Edition date: 202011, First-Printing Connecting a TrailerE168683

When driving through standing water, drive
very slowly and do not stop your vehicle.
Your brake performance and traction may
be limited. After driving through water and
as soon as it is safe to do so:
•
Lightly press the brake pedal to dry the
brakes and to check that they work.
• Check that the horn works.
• Check that the exterior lights work.
• Turn the steering wheel to check that the
steering power assist works. DRIVING ECONOMICALLY
The following helps to improve fuel
consumption:
•
Drive smoothly, accelerate gently and
anticipate the road ahead to avoid heavy
braking.
• Regularly check your tire pressures and
make sure that they are inflated to the
correct pressure.
• Follow the recommended maintenance
schedule and carry out the
recommended checks.
• Plan your journey and check the traffic
before you set off. It is more efficient to
combine errands into a single trip
whenever possible.
• Avoid idling the engine in cold weather
or for extended periods. Start the engine
only when you are ready to set off.
• Do not carry unnecessary weight in your
vehicle as extra weight wastes fuel. •
Do not add unnecessary accessories to
the exterior of your vehicle, for example
running boards. If you use a roof rack,
remember to fold it down or remove it
when not in use.
• Do not shift into neutral when you are
braking or when your vehicle is slowing
down.
• Shut all windows when driving at high
speeds.
• Switch off all electric systems when not
in use, for example air conditioning. Make
sure that you unplug any accessories
from the auxiliary power points when not
in use.
FLOOR MATS WARNING: Use a floor mat designed
to fit the footwell of your vehicle that does
not obstruct the pedal area. Failure to
follow this instruction could result in the
loss of control of your vehicle, personal
injury or death.
306
2021 Nautilus (CD9) Canada/United States of America, enUSA, Edition date: 202011, First-Printing Driving HintsE259345

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.
332
2021 Nautilus (CD9) Canada/United States of America, enUSA, Edition date: 202011, First-Printing MaintenanceE142457 E267365

4. Open the hood. The hood struts
automatically supports the hood.
Closing the Hood
1. Lower the hood until it engages on to the
secondary latch.
2. Firmly push down on the front of the hood to close it fully.
Note: Make sure that the hood is correctly
closed.
333
2021 Nautilus (CD9) Canada/United States of America, enUSA, Edition date: 202011, First-Printing Maintenance E202009

UNDER HOOD OVERVIEW - 2.0L
334
2021 Nautilus (CD9) Canada/United States of America, enUSA, Edition date: 202011, First-Printing MaintenanceE341608