2021 LINCOLN NAVIGATOR check engine

Check Every Month
Engine oil level.
Function of all interior and exterior lights.
Tires (including spare) for wear and proper pressure. Windshield washer fluid level.
Fuel and water separator. Drain if necessary (or if indicated by the information display). Holes and slots in the tail pipe to make sure they are functional and clear of debris. Check Every Six Months
Battery connections. Clean if necessary.
Body and door drain holes for obstructions. Clean if necessary. Cooling system fluid level and coolant strength.
Door weatherstrips for wear. Lubricate if necessary.
Hinges, latches and outside locks for proper operation. Lubricate if necessary. Parking brake for proper operation.
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Navigator (TB9) Canada/United States of America, enUSA, First-Printing Scheduled Maintenance

Check Every Six Months
Safety belts and seat latches for wear and function.
Safety warning lamps (brake, ABS, airbag and safety belt) for operation.
Washer spray and wiper operation. Clean or replace blades as necessary.
Multi-Point Inspection
In order to keep your vehicle running right,
it is important to have the systems on your
vehicle checked regularly. This can help
identify potential issues and prevent major
problems. We recommend having the
following multi-point inspection performed
at every scheduled maintenance interval to
help make sure your vehicle keeps running
great. Multi-Point Inspection
Hazard warning system operation
Accessory drive belt(s)
Horn operation
Battery performance
Radiator, cooler, heater and air conditioning hoses
Engine air filter
Suspension components for leaks or damage
Exhaust system
542
Navigator (TB9) Canada/United States of America, enUSA, First-Printing Scheduled Maintenance

Multi-Point Inspection
Steering and linkage
Exterior lamps operation
Tires (including spare) for wear and proper pressure2
Fluid levels 1
; fill if necessary
Windshield for cracks, chips or pits
For oil and fluid leaks
Washer spray and wiper operation
Half-shaft dust boots
1 Brake, coolant recovery reservoir, automatic transmission and window washer
2 If your vehicle is equipped with a temporary mobility kit, check the tir\
e sealant expiration Use By date on the canister. Replace as needed.
Be sure to ask your dealership service
advisor or technician about the multi-point
vehicle inspection. It is a comprehensive way
to perform a thorough inspection of your
vehicle. Your checklist gives you immediate
feedback on the overall condition of your
vehicle. NORMAL SCHEDULED
MAINTENANCE
Intelligent Oil-Life Monitor
Your vehicle has an Intelligent Oil-Life
Monitor that determines when you should
change the engine oil based on how your
vehicle is used. By using several important
factors in its calculations, the monitor helps
reduce the cost of owning your vehicle and
reduces environmental waste at the same
time.This means you do not have to remember to
change the oil on a mileage-based schedule.
Your vehicle lets you know when an oil
change is due by displaying a message in
the information display.
The following table provides examples of
vehicle use and its impact on oil change
intervals. It is a guideline only. Actual oil
change intervals depend on several factors
and generally decrease with severity of use.
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Navigator (TB9) Canada/United States of America, enUSA, First-Printing Scheduled Maintenance

Off-road Operation
Rotate tires, inspect tires for wear and measure tread depth.
Change transfer case fluid (Four-wheel drive vehicles).
Every 60,000 mi
(96,000 km)
1 Reset your Intelligent Oil-Life Monitor after each engine oil and filter \
change.
Exceptions
There are several exceptions to the Normal
Schedule.
Axle and Transfer Case Maintenance
Axle(s) and transfer case (Four-wheel drive
vehicles) fluid changes or level checks are
not required unless a leak is suspected or
the assembly has been submerged in water.
Contact an 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. The Lincoln Motor Company,
however, urges you to have all
recommended maintenance services
performed at the specified intervals and to
record all vehicle service.Hot Climate Oil Change Intervals
Vehicles operating in the Middle East, North
Africa, Sub-Saharan Africa or locations with
similar climates using an American Petroleum
Institute (API) Certified for Gasoline Engines
(Certification mark) oil of SM or SN quality,
the normal oil change interval is
3,000 mi
(4,800 km).
If the available API SM or SN oils are not
available, then the oil change interval is
1,800 mi (2,900 km)
.
Engine Air Filter Replacement
The life of the engine 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.
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Navigator (TB9) Canada/United States of America, enUSA, First-Printing Scheduled Maintenance

Audio Unit......................................................462
Adjusting the Volume........................................462
Changing Radio Stations..................................462
Locking the Rear Audio Controls...................463
Rear Passenger Audio Controls - Vehicles with: Second Row Center Console...........464
Rear Seat Audio Controls - Vehicles without: Second Row Center Console.....................463
Selecting the Audio Modes.............................463
Switching the Audio Unit On and Off............
463
Using Seek, Fast Forward and Reverse.......463
Auto Hold
.......................................................245
Using Auto Hold.................................................246
Autolamps.........................................................111 Windshield Wiper Activated Headlamps........111
Automatic Climate Control.........................166 Accessing Rear Climate Controls...................166
Accessing the Climate Control Menu............166
Setting the Blower Motor Speed....................
166
Setting the Temperature...................................166
Switching Auto Mode On and Off...................166
Switching Defrost On and Off..........................167
Switching Maximum Air Conditioning On and Off.......................................................................168
Switching Recirculated Air On and Off..........168
Switching the Air Conditioning On and Off.......................................................................167
Switching the Heated Seats On and Off.......168 Switching the Ventilated Seats On and
Off.......................................................................168
Automatic High Beam Control....................117
Automatic High Beam Control Indicators.......................................................118
Automatic Transmission
..............................227
Automatic Transmission Adaptive
Learning...........................................................232
Brake-Shift Interlock Override.........................
231
If Your Vehicle Gets Stuck in Mud or Snow.................................................................232
SelectShift™ Automatic Transmission............230
Understanding the Shift Positions of your Automatic Transmission...............................227
Automatic Transmission Fluid Check............................................................388
Auto-Start-Stop..............................................212 Disabling Auto-Start-Stop..................................214
Enabling Auto-Start-Stop...................................212
Autowipers......................................................107 Autowipers Settings............................................107
B
Battery See: Changing the 12V Battery......................390
Blind Spot Information System.................288 ........................................................................\
........288 Blind Spot Information System with Trailer
Tow....................................................................289
Switching the System On and Off..................292
System Errors......................................................292
Using the Blind Spot Information System..............................................................288
BLIS See: Blind Spot Information System..............288
Body Styling Kits...........................................406
Bonnet Lock See: Opening and Closing the Hood............377
Booster Seats..................................................39 Types of Booster Seats.......................................39
Brake Fluid Check........................................389 Brake Fluid Service Interval.............................390
Brakes..............................................................241 General Information............................................241
Breaking-In.....................................................342
Bulb Specification Chart..............................451
C
Canceling the Set Speed
...........................273
Capacities and Specifications...................440 Air Conditioning System...................................440
Alternative Engine Oil for Extremely Cold
Climates............................................................444
Automatic Transmission.....................................441
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Navigator (TB9) Canada/United States of America, enUSA, First-Printing Index

Engine Coolant...................................................442
Engine Oil.............................................................443
Front Axle.............................................................449
Fuel Tank..............................................................446
Grease...................................................................446
Hydraulic Brake System....................................447
Locks......................................................................447
Rear Axle..............................................................449
Transfer Case......................................................448
Washer Reservoir...............................................450
Cargo Nets.....................................................307
Car Wash See: Cleaning the Exterior...............................397
Catalytic Converter
......................................224
On-Board Diagnostics (OBD-II).......................225
Readiness for Inspection and Maintenance
(I/M) Testing.....................................................226
Center Console
............................................205
Changing a Bulb...........................................395
LED Lamps...........................................................395
Changing a Fuse...........................................374 Fuses......................................................................374
Changing a Road Wheel............................429 Dissimilar Spare Wheel and Tire Assembly
Information......................................................430
Location of the Spare Tire and Tools............430
Tire Change Procedure.....................................
431 Changing the 12V Battery..........................390
Battery Management System..........................392
Changing the Engine Air Filter.................382
Changing the Vehicle Wi-Fi Hotspot Name or Password................................................459
Changing the Wiper Blades......................394
Charging a Wireless Device......................204
Checking MyKey System Status
..................81
MyKey Distance......................................................81
Number of Admin Keys.......................................82
Number of MyKeys...............................................82
Checking the Wiper Blades.......................394
Childminder Mirror
........................................123
Child Restraint and Seatbelt Maintenance..................................................54
Child Restraint Positioning
...........................42
Child Safety......................................................24
General Information.............................................24
Child Safety Locks
..........................................44
Left-Hand Side.......................................................44
Right-Hand Side....................................................44
Cleaning Leather Seats..............................403
Cleaning Products.......................................396 Materials...............................................................396
Cleaning the Engine
....................................399
Cleaning the Exterior...................................397 Cleaning the Exterior Lamps...........................397
Cleaning the Exterior Precautions.................397 Exterior Chrome Parts.......................................398
Exterior Plastic Parts..........................................398
Stripes or Graphics............................................398
Underbody...........................................................398
Under Hood.........................................................398
Cleaning the Instrument Panel and Instrument Cluster Lens...........................402
Cleaning the Interior...................................400 Cleaning Black Label or Presidential
Interior..............................................................400
Cleaning the Wheels
...................................403
Cleaning the Windows and Wiper Blades...........................................................399
Clearing All MyKeys........................................81
Climate............................................................499 Accessing Rear Climate Controls..................502
Accessing the Climate Control Menu...........499
Directing the Airflow..........................................499
Rear Climate Control Lock Indicator.............502
Setting the Blower Motor Speed...................
500
Setting the Temperature..................................500
Switching Auto Mode On and Off.................500
Switching Dual Zone Mode On and Off.......500
Switching Maximum Air Conditioning On and Off.......................................................................501
Switching Maximum Defrost On and Off......501
Switching Rear Auto Mode On and Off........502
Switching Recirculated Air On and Off..........501
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Navigator (TB9) Canada/United States of America, enUSA, First-Printing Index

Switching the Air Conditioning On and
Off......................................................................500
Switching the Climate Controlled Seats On and Off.............................................................500
Switching the Climate Control On and Off......................................................................500
Switching the Heated Exterior Mirrors On and Off.......................................................................501
Switching the Heated Rear Window On and Off.......................................................................501
Switching the Heated Seats On and Off.......501
Switching the Heated Steering Wheel On and Off.......................................................................501
Switching the Heated Windshield On and Off.......................................................................501
Switching the Rear Climate Controlled Seats On and Off.......................................................502
Switching the Rear Heated Seats On and Off......................................................................502
Switching the Rear Ventilated Seats On and Off......................................................................502
Switching the Ventilated Seats On and Off......................................................................502
Climate Control..............................................166
Climate Controlled Seats............................193
Automatic Climate Controlled Seats..............193
Heated Seats........................................................193
Ventilated Seats...................................................194 Connected Vehicle
......................................455
Connecting the Vehicle to a Mobile
Network............................................................455
Connected Vehicle Limitations.................455
Connected Vehicle Requirements...........455
Connected Vehicle – Troubleshooting.........................................456
Connecting the Vehicle to a Mobile Network.......................................................455
Connecting Lincoln Way to the Modem.......455
Enabling and Disabling the Modem..............455
What Is the Modem............................................455
Connecting the Vehicle to a Wi-Fi Network.......................................................455
Coolant Check See: Engine Coolant Check.............................383
Crash Sensors and Airbag Indicator..........65
Creating a MyKey...........................................80 Programming and Changing Configurable
Settings................................................................81
Creating a Vehicle Wi-Fi Hotspot
.............459
Connecting a Device to the Wi-Fi
Hotspot.............................................................459
Finding the Wi-Fi Hotspot Name and Password.........................................................459
Cross Traffic Alert.........................................292 Cross Traffic Alert Behavior When Trailer is
Attached ...........................................................295 Cross Traffic Alert Indicator.............................296
Cross Traffic Alert Information
Messages.........................................................296
Cross Traffic Alert System Limitations..........295
Cross Traffic Alert System Sensors...............295
Switching the System On and Off..................
295
Using Cross Traffic Alert...................................292
Cruise Control...............................................272
Cruise Control Indicators............................273
Cruise Control - Vehicles With: Adaptive Cruise Control.............................................103
Cruise Control - Vehicles With: Cruise Control...........................................................103
Customer Assistance...................................351
Customer Information
..................................551
Radio Frequency Certification Labels............551
D
Data Recording
................................................12
Comfort, Convenience and Entertainment
Data.......................................................................14
Event Data...............................................................13
Service Data............................................................12
Services That Third Parties Provide..................14
Services That We Provide....................................14
Vehicles With a Modem.......................................15
Vehicles With an Emergency Call System.......16
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Navigator (TB9) Canada/United States of America, enUSA, First-Printing Index

Vehicles With SYNC..............................................15
Daytime Running Lamps - Vehicles With: Configurable Daytime Running
Lamps.............................................................112
Daytime Running Lamps - Vehicles With: Daytime Running Lamps (DRL)................112
Declaration of Conformity - Vehicles With: SYNC 3
.........................................................620
Radio Frequency Statement...........................620
Digital Radio
..................................................465
HD Radio Reception and Station
Troubleshooting.............................................466
Direction Indicators
........................................114
Lane Change.........................................................114
Doors and Locks.............................................84
Drive Mode Control.....................................303 Lincoln Drive Modes..........................................303
Driver Alert
......................................................281
Using Driver Alert...............................................282
Driver and Passenger Airbags....................58 Children and Airbags...........................................59
Proper Driver and Front Passenger Seating
Adjustment.........................................................59
Driving Aids....................................................281
Driving Hints...................................................341
Driving Through Water................................342 DRL
See: Daytime Running Lamps - Vehicles With:
Configurable Daytime Running Lamps......112
See: Daytime Running Lamps - Vehicles With: Daytime Running Lamps (DRL).....................112
E
Economical Driving
.......................................341
Electric Parking Brake.................................242
Applying the Electric Parking Brake..............242
Automatically Releasing the Electric Parking
Brake.................................................................243
Manually Releasing the Electric Parking Brake.................................................................243
Releasing the Electric Parking Brake if the Vehicle Battery is Running Out of
Charge..............................................................243
Electromagnetic Compatibility..................584
Emergency Call Limitations.........................68
Emergency Call Requirements
....................67
Emission Law.................................................223 Noise Emissions Warranty, Prohibited
Tampering Acts and Maintenance............224
Tampering With a Noise Control System..............................................................223 End User License Agreement...................589
VEHICLE SOFTWARE END USER LICENSE
AGREEMENT (EULA) ....................................589
Engine Block Heater
....................................210
Using the Engine Block Heater........................211
Engine Coolant Check................................383 Adding Coolant...................................................384
Coolant Change..................................................386
Engine Coolant Temperature
Management...................................................387
Fail-Safe Cooling................................................386
Recycled Coolant...............................................385
Severe Climates.................................................385
Engine Emission Control............................223
Engine Immobilizer See: Passive Anti-Theft System........................
95
Engine Oil Check.........................................380 Adding Engine Oil...............................................381
Engine Oil Dipstick......................................380
Engine Specifications
..................................438
Drivebelt Routing................................................438
Entertainment................................................487 AM/FM Radio.......................................................488
Apps.......................................................................499
Bluetooth Stereo or USB..................................497
CD........................................................................\
..496
HD Radio ™ Information (If Available)..............492
SiriusXM® Satellite Radio (If Activated).........488
625
Navigator (TB9) Canada/United States of America, enUSA, First-Printing Index