2021 LINCOLN NAUTILUS air filter

Extensive idling or low-speed driving for long distances, as in heavy co\
mmercial use
Change engine oil and filter as indicated by the information display and\
perform services listed in the Normal
Scheduled Maintenance chart.
As required
Replace cabin air filter.
Inspect frequently, service
as required
Replace engine air filter.
Change automatic transmission fluid.
Every 30,000 mi
(48,000 km)
Replace spark plugs.
Every
60,000 mi
(96,000 km) Extended Hot and Cold climate operation
Change engine oil and filter. *
Every
5,000 mi (8,000 km)
* Hot Climates only
469
2021 Nautilus (CD9) Canada/United States of America, enUSA, Edition date: 202011, First-Printing Scheduled Maintenance

Operating in off-road (unpaved, sandy, dusty) and Mountainous conditions
Replace cabin air filter.
Inspect frequently, service
as required
Replace engine air filter.
Inspect the wheels and related components for abnormal noise, wear, looseness or drag.
Every 5,000 mi (8,000 km)
Rotate tires, inspect tires for wear and measure tread depth.
Change engine oil and filter. *
Every
5,000 mi (8,000 km)
or 6 months
Perform multi-point inspection.
Change automatic transmission fluid.
Every
30,000 mi
(48,000 km)
* Reset your Intelligent Oil-Life Monitor after engine oil and filter chang\
es.
See Resetting the Engine Oil Change Reminder (page 339).
Exceptions
There are several exceptions to the Normal
Schedule:
470
2021 Nautilus (CD9) Canada/United States of America, enUSA, Edition date: 202011, First-Printing Scheduled Maintenance

Axle and PTU maintenance: The Power
Transfer Unit (PTU) and rear axle (AWD only)
in your vehicle does not require any normal
scheduled maintenance. The PTU lubricant
may be more likely to require a fluid change
if the vehicle has extended periods of
extreme or severe duty cycle driving.
Changing or checking the PTU lubricant is
not necessary unless the unit has been
submerged in water, shows sign of leakage.
Contact your authorized dealer for service.
California fuel filter replacement
: If you
register your vehicle in California, the
California Air Resources Board has
determined that the failure to perform this
maintenance item does not nullify the
emission warranty or limit recall liability
before the completion of your vehicle's
useful life. We however, urge you to have all
recommended maintenance services
performed at the specified intervals and to
record all vehicle service. Engine air filter and cabin air filter
replacement
: The life of the engine air filter
and cabin air filter is dependent on exposure
to dusty and dirty conditions. Vehicles
operated in these conditions require frequent
inspection and replacement of the engine
air filter and cabin air filter.
471
2021 Nautilus (CD9) Canada/United States of America, enUSA, Edition date: 202011, First-Printing Scheduled Maintenance

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.
• 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.
547
2021 Nautilus (CD9) Canada/United States of America, enUSA, Edition date: 202011, First-Printing Customer Information

Speed Compensated Volume.........................424
Tone Settings.......................................................424
Adjusting the Steering Wheel - Vehicles With: Manual Adjustable Steering
Column...........................................................112
Adjusting the Steering Wheel - Vehicles With: Power Adjustable Steering
Column...........................................................112
Adjusting the Volume..................................423
Aid Mode........................................................267
How Does Aid Mode Work..............................267
What Is Aid Mode...............................................267
Airbag Precautions
.........................................66
Airbags..............................................................63 Front Passenger Sensing System.....................
67
Air Conditioning See: Climate Control..........................................154
Air Conditioning System Capacity and Specification - 2.0L....................................410
Air Conditioning System Capacity and Specification - 2.7L
.....................................412
Air Filter See: Changing the Engine Air Filter..............344
Alert and Aid Mode.....................................268 How Does Alert and Aid Mode Work............268
What Is Alert and Aid Mode............................268
Alert Mode
.....................................................267
How Does Alert Mode Work............................267 What Is Alert Mode............................................267
All-Wheel Drive
..............................................214
All-Wheel Drive Driving Hints...........................214
All-Wheel Drive – Troubleshooting.................217
All-Wheel Drive Driving Hints
.....................214
Driving In Sand.....................................................215
Driving on Hilly or Sloping Terrain..................216
Driving on Snow and Ice...................................216
Driving Through Mud and Water.....................215
Emergency Maneuvers......................................214
All-Wheel Drive Limitations
.........................214
All-Wheel Drive Precautions.......................214
All-Wheel Drive – Troubleshooting...........217 All-Wheel Drive – Information
Messages..........................................................217
AM/FM Radio
.................................................425
AM/FM Radio Limitations.................................425
Selecting a Radio Station.................................425
Ambient Lighting...........................................128 Adjusting Ambient Lighting..............................128
Switching Ambient Lighting On and Off........128
Anti-Lock Braking System
...........................218
Anti-Lock Braking System Limitations...........218
Anti-Theft Alarm System.............................108 How Does the Anti-Theft Alarm System
Work...................................................................108
What Are the Inclination Sensors...................108
What Are the Interior Sensors.........................
108 What Is the Anti-Theft Alarm System.............108
What Is the Perimeter Alarm............................108
Anti-Theft Alarm System Settings.............109 Setting the Alarm Security Level.....................109
Switching Ask on Exit On and Off...................109
What are the Alarm Security Levels...............109
What Is Ask on Exit.............................................109
Appendices....................................................548
Applying the Electric Parking Brake
.........221
Applying the Electric Parking Brake in an Emergency...................................................221
App Precautions...........................................444
App Requirements.......................................444
Apps
.................................................................444
Audio System................................................423
AM/FM Radio.......................................................425
Digital Radio........................................................426
Satellite Radio......................................................427
Audio System Precautions.........................423
Auto-Dimming Exterior Mirror
....................134
What Is the Auto-Dimming Exterior
Mirror..................................................................134
Auto-Dimming Interior Mirror.....................132 Auto-Dimming Interior Mirror
Limitations.........................................................132
What Is the Auto-Dimming Interior Mirror..................................................................132
Auto Hold
.......................................................226
554
2021 Nautilus (CD9) Canada/United States of America, enUSA, Edition date: 202011, First-Printing Index

Catalytic Converter –
Troubleshooting.........................................204
Catalytic Converter – Warning Lamps..........204
Center Console................................................31
Changing a Flat Tire.....................................391 ........................................................................\
........396
Dissimilar Spare Wheel and Tire Assembly
Information.......................................................391
Stowing the flat tire ...........................................396
Tire Change Procedure....................................392
Changing a Road Wheel.............................391
Changing the 12V Battery..........................345 Remove and Reinstall the Battery..................347
Changing the Engine Air Filter..................344
Changing the Fuel Filter.............................344
Changing the Remote Control Battery.............................................................76
Changing the Vehicle Wi-Fi Hotspot Name or Password.................................................421
Changing the Wi-Fi Hotspot Frequency.......422
Charging a Device .........................................178
Charging a Wireless Device.......................183
Checking MyKey System Status.................87 MyKey Distance.....................................................87
Number of Admin Keys.......................................87
Number of MyKeys...............................................87
Checking the Brake Fluid
...........................218 Checking the Coolant.................................340
Adding Coolant...................................................340
Coolant Change...................................................341
Engine Coolant Temperature
Management...................................................343
Fail-Safe Cooling................................................342
Severe Climates...................................................341
Checking the Seatbelts................................60
Checking the Tire Pressures.....................374
Checking the Wiper Blades.........................116
Children and Airbags.....................................67
Child Restraint Anchor Points
......................40
Locating the Child Restraint Lower Anchor
Points....................................................................41
Locating the Child Restraint Top Tether Anchor Points.....................................................41
What Are the Child Restraint Anchor Points...................................................................40
Child Restraints
................................................41
Child Restraint Position Information..................41
Child Restraints Recommendation...................43
Child Safety
......................................................39
Child Restraint Anchor Points............................40
Child Restraints.......................................................41
Installing Child Restraints....................................44
Child Safety Locks..........................................52 Left-Hand Side.......................................................52
Right-Hand Side....................................................52 Child Safety Precautions
...............................39
Cleaning Products........................................354
Materials...............................................................354
Cleaning the Exterior
..................................355
Cleaning Camera Lenses and Sensors........356
Cleaning Chrome, Aluminium or Stainless
Steel..................................................................355
Cleaning Headlamps and Rear Lamps.........355
Cleaning Stripes or Graphics..........................356
Cleaning the Engine Compartment...............356
Cleaning Wheels................................................356
Cleaning Windows and Wiper Blades
..........355
Cleaning the Interior....................................357 Cleaning Carpets and Floor Mats..................358
Cleaning Displays and Screens......................357
Cleaning Fabric Seats and Headliners.........358
Cleaning Leather and Vinyl ............................357
Cleaning Moonroof Tracks...............................359
Cleaning Plastic...................................................357
Cleaning Seatbelts.............................................358
Cleaning Storage Compartments..................358
Cleaning the Instrument Panel........................357
Clearing All MyKeys.......................................86
Clearing the Garage Door Opener...........176
Climate Control..............................................154 Auto Mode............................................................156
Climate Control – Troubleshooting................157
557
2021 Nautilus (CD9) Canada/United States of America, enUSA, Edition date: 202011, First-Printing Index

Refueling System Overview............................200
Refueling Your Vehicle......................................200
Releasing the Electric Parking Brake if the Vehicle Battery Has Run Out of
Charge.........................................................222
Remote Control Limitations..........................75
Remotely Starting and Stopping the Vehicle............................................................151
Remotely Starting the Vehicle...........................151
Remotely Stopping the Vehicle.......................152
Remote Start Limitations..............................151
Remote Start Precautions............................151
Remote Start Remote Control Indicators......................................................152
Remote Control Feedback................................152
Remote Start....................................................151
Remote Start Settings........................................152
Remote Start Settings..................................152 Setting the Remote Start Duration..................153
Switching Climate Control Last Settings On
and Off...............................................................152
Switching the Heated Seat Settings On and Off.......................................................................152
Switching the Heated Steering Wheel Settings On and Off........................................................153
Removing Your Vehicle From Storage.........................................................362
Repairing Minor Paint Damage.................359 Replacement Parts
Recommendation.......................................
514
Collision Repairs..................................................515
Scheduled Maintenance and Mechanical
Repairs...............................................................514
Warranty on Replacement Parts......................515
Replacing a Lost Key or Remote Control.............................................................77
Replacing the Cabin Air Filter....................158
Replacing the Front Wiper Blades.............116
Replacing the Rear Wiper Blades
..............116
Reporting Safety Defects in Canada.......475
Reporting Safety Defects in the United States............................................................474
Reprogramming the Garage Door Opener..........................................................176
Resetting the Stopping Position - Vehicles With: Power Adjustable Steering
Column...........................................................113
Resetting Tire Pressure Monitoring System..........................................................387
Changing Tires With a Tire Pressure Monitoring System.........................................387
Restarting the Engine...................................194
Resuming the Set Speed...........................252 Resuming the Set Speed from a Complete
Stop...................................................................259 Reverse Wipe
..................................................115
Reverse Wipe Settings........................................115
What Is Reverse Wipe.........................................115
Roadside Assistance...................................308 Vehicles Sold in Canada: Getting Roadside
Assistance.......................................................309
Vehicles sold in the United States: Getting Roadside Assistance.....................................308
Vehicles Sold in the United States: Using Roadside Assistance.....................................308
Rollover Warning
..........................................472
Roof Rack.......................................................293 Roof Rack Load Capacities..............................293
Roof Rack Precautions......................................293
Route Guidance.............................................451 Adjusting the Guidance Prompt Volume.......451
Canceling Route Guidance...............................451
Repeating an Instruction...................................451
Running-In See: Breaking-In.................................................305
Running Out of Fuel
.....................................199
Adding Fuel From a Portable Fuel
Container..........................................................199
Filling a Portable Fuel Container.....................
199
569
2021 Nautilus (CD9) Canada/United States of America, enUSA, Edition date: 202011, First-Printing Index

What Is the 12V Battery Gauge..................139
What Is the 360 Degree Camera.............243
What Is the Cabin Air Filter.........................158
What Is the Catalytic Converter...............204
What Is the Electric Parking Brake...........221
What Is the Engine Coolant Temperature
Gauge............................................................139
What Is the Engine Oil Pressure Gauge............................................................139
What Is the Garage Door Opener.............173 HomeLink Wireless Control System...............173
What Is the Gross Axle Weight Rating...........................................................290
GAWR (Gross Axle Weight Rating)................290
What Is the Gross Combined Weight Rating...........................................................290
What Is the Gross Vehicle Weight Rating...........................................................290
What Is the Keyless Entry Keypad..............95
What Is the Lane Keeping System...........265
What Is the Personal Safety System..........62
What Is the Power Outlet............................180
What is the Rear Occupant Alert System...........................................................169
What Is the Rear View Camera.................240
What Is the Speedometer...........................138
What Is the Tachometer...............................138 What Is the Tire Pressure Monitoring
System..........................................................385
What Is the Tire Sealant and Inflator Kit...................................................................378
What Is the Transmission Fluid Temperature Gauge
...................................139
What Is the Wireless Accessory Charger.........................................................182
What is Voice Interaction
...........................435
Wheel and Tire Information.......................363
Wheel Nuts....................................................396
Window Bounce-Back
..................................130
Overriding Window Bounce-Back..................130
What Is Window Bounce-Back.........................130
Windows..........................................................129 Global Opening and Closing............................
130
Window Bounce-Back........................................130
Wipers and Washers – Troubleshooting...........................................118
Wipers and Washers – Frequently Asked Questions...........................................................118
Wipers and Washers – Warning Lamps..........118
Wipers and Washers
......................................114
Autowipers.............................................................114
Reverse Wipe........................................................115
Washers...................................................................117
Wipers.....................................................................114
Wipers and Washers – Troubleshooting........118 Wipers...............................................................114
Switching Windshield Wipers On and
Off........................................................................\
114
Wiper Precautions................................................114
Wireless Accessory Charger Precautions..................................................182
Wireless Accessory Charger......................182
575
2021 Nautilus (CD9) Canada/United States of America, enUSA, Edition date: 202011, First-Printing Index