2021 LINCOLN NAVIGATOR coolant temperature

Brake fluid reservoir. See Brake Fluid Check (page 389).
F.
Air filter.
See Changing the Engine Air Filter (page 382).
G.
Engine coolant reservoir.
See Engine Coolant Check (page 383).
H.
ENGINE OIL DIPSTICK MINA
MAXB ENGINE OIL CHECK
To check the engine oil level consistently
and accurately, do the following:
1.
Make sure the parking brake is on. Make
sure the transmission is in park (P) or
neutral (N).
2. Run the engine until it reaches normal operating temperature.
3. Make sure that your vehicle is on level ground.
4. Switch the engine off and wait 15 minutes
for the oil to drain into the oil pan.
Checking the engine oil level too soon
after you switch the engine off may result
in an inaccurate reading.
5. Open the hood.
See Opening and
Closing the Hood (page 377). 6. Remove the dipstick and wipe it with a
clean, lint-free cloth.
See Under Hood
Overview (page 379).
7. Reinstall the dipstick and remove it again
to check the oil level.
See Engine Oil
Dipstick (page 380).
8. Make sure that the oil level is between the maximum and minimum marks. If the
oil level is at the minimum mark, add oil
immediately.
See Capacities and
Specifications (page 440).
9. If the oil level is correct, replace the dipstick and make sure it is fully seated.
Note: Do not remove the dipstick when the
engine is running.
Note: If the oil level is between the
maximum and minimum marks, the oil level
is acceptable. Do not add oil.
380
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Coolant Change
At specific mileage intervals, as listed in the
scheduled maintenance information, the
coolant should be changed. Add prediluted
coolant approved to the correct specification.
See Capacities and Specifications (page
440).
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.
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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 may
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.
3. If this is not possible, wait a short period
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).
387
Navigator (TB9) Canada/United States of America, enUSA, First-Printing Maintenance

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.
AUTOMATIC TRANSMISSION
FLUID CHECK
If required, have an authorized dealer check
and change the transmission fluid at the
correct service interval. See Scheduled
Maintenance (page 539).
The automatic transmission does not have
a transmission fluid dipstick. Refer to your scheduled maintenance
information for scheduled intervals for fluid
checks and changes. Your transmission does
not consume fluid. However, if the
transmission slips, shifts slowly or if you
notice a sign of leaking fluid, contact an
authorized dealer.
Do not use supplemental transmission fluid
additives, treatments or cleaning agents. The
use of these materials may affect
transmission operation and result in damage
to internal transmission components.
TRANSFER CASE FLUID CHECK
(IF
EQUIPPED) 388
Navigator (TB9) Canada/United States of America, enUSA, First-Printing MaintenanceE170444
3

Fuel system
•
Fill the fuel tank with high-quality fuel
until the first automatic shutoff of the fuel
pump nozzle.
Cooling system
• Protect against freezing temperatures.
• When removing your vehicle from
storage, check coolant fluid level.
Confirm that there are no cooling system
leaks and that fluid is at the
recommended level.
Disconnecting Your 12 Volt Battery
• Check and recharge as necessary. Keep
connections clean.
• If storing your vehicle for more than 30
days without recharging the battery, we
recommend that you disconnect the
battery cables to maintain battery charge
for quick starting.
Note: It is necessary to reset memory
features if you disconnect the battery cables. Brakes
•
Make sure the brakes and parking brake
release fully.
Tires
• Maintain recommended air pressure.
Miscellaneous
• 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.
Removing Vehicle From Storage
When your vehicle is ready to come out of
storage, do the following:
• Wash your vehicle to remove any dirt or
grease film build-up on window surfaces.
• Check windshield wipers for any
deterioration. •
Check under the hood for any foreign
material that may have collected during
storage such as mice or squirrel nests.
• Check the exhaust for any foreign
material that may have collected during
storage.
• Check tire pressures and set tire inflation
per the Tire Label.
• Check brake pedal operation. Drive your
vehicle 15 ft (4.5 m) back and forth to
remove rust build-up.
• Check fluid levels (including coolant, oil
and gas) to make sure there are no leaks,
and fluids are at recommended levels.
• If you remove the battery, clean the
battery cable ends and check for
damage.
Contact an authorized dealer if you have any
concerns or issues.
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Navigator (TB9) Canada/United States of America, enUSA, First-Printing Vehicle Care

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
623
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

Sources.................................................................487
Supported Media Players, Formats and
Metadata Information...................................499
USB Ports.............................................................499
Environment.....................................................20
EPB See: Electric Parking Brake.............................242
Essential Towing Checks............................330
Before Towing a Trailer.....................................337
Hitches...................................................................331
Integrated Trailer Brake Controller................333
Launching or Retrieving a Boat or Personal
Watercraft (PWC)............................................338
Safety Chains.......................................................332
Trailer Brakes.......................................................333
Trailer Hitch Cover.............................................330
Trailer Lamps.......................................................336
Trailer Towing Connector (Vehicles with a Trailer Towing Package and 7–Pin
Connector).......................................................330
When Towing a Trailer.......................................337
Event Data Recording See: Data Recording.............................................12
Export Unique Options
...................................19
Exterior Mirrors..............................................120 360-Degree Camera..........................................122
Auto-Dimming Feature......................................122
Auto-Folding Mirrors............................................121 Blind Spot Monitor..............................................122
Fold-Away Exterior Mirrors................................121
Heated Exterior Mirrors.....................................122
Lincoln Welcome Mat.........................................122
Memory Mirrors...................................................122
Power Exterior Mirrors.......................................120
Signal Indicator Mirrors......................................
122
F
Fastening the Seatbelts
................................46
Rear Inflatable Seatbelt.......................................50
Seatbelt Locking Modes.....................................48
Using Seatbelts During Pregnancy..................48
Flat Tire See: Changing a Road Wheel.........................
429
Floor Mats.......................................................342
Fog Lamps - Front See: Front Fog Lamps.........................................113
Foot Pedals See: Adjusting the Pedals.................................105
Four-Wheel Drive
.........................................233
Front Fog Lamps............................................113 Front Fog Lamp Indicator...................................113
Switching the Front Fog Lamps On or
Off........................................................................\
113
Front Parking Aid..........................................254 Object Distance Indicator................................255 Front Passenger Sensing System..............60
Fuel and Refueling........................................215
Fuel Consumption
.........................................221
Advertised Capacity...........................................221
Calculating Fuel Economy................................221
Filling the Fuel Tank............................................221
Fuel Filler Funnel Location
.........................216
Fuel Filter........................................................394
Fuel Quality.....................................................216 Choosing the Right Fuel....................................216
Fuel Shutoff
....................................................345
Fuses...............................................................360
Fuse Specification Chart............................360
Engine Compartment Fuse Box.....................360
Passenger Compartment Fuse Box...............369
G
Garage Door Opener...................................197
Garage Door Opener See: Universal Garage Door Opener.............197
Gauges.............................................................127 Engine Coolant Temperature Gauge.............128
Fuel Gauge...........................................................128
Left and Right Information Group...................128
Status Bar..............................................................128
Gearbox See: Transmission..............................................227
626
Navigator (TB9) Canada/United States of America, enUSA, First-Printing Index