2021 LINCOLN AVIATOR check engine

When the oil change message appears in
the information display, it is time for an oil
change. Make sure you perform the oil
change within two weeks or 500 mi (800 km)
of the message appearing. Make sure you
reset the Intelligent Oil-Life Monitor after
each oil change. See Oil Change Indicator
Reset (page 388).
If your information display resets prematurely
or becomes inoperative, you should perform
the oil change interval at six months or
5,000 mi (8,000 km)
from your last oil
change. Never exceed one year or 10,000 mi
(16,000 km)
between oil change intervals,
Your vehicle is very sophisticated and built
with multiple, complex performance systems.
Every manufacturer develops these systems
using different specifications and
performance features. That is why it is
important to rely upon your dealership to
properly diagnose and repair your vehicle. We have recommended maintenance
intervals for various parts and component
systems based upon engineering testing.
We rely upon this testing to determine the
most appropriate mileage for replacement
of oils and fluids to protect your vehicle at
the lowest overall cost to you and
recommends against maintenance schedules
that deviate from the scheduled maintenance
information.
We strongly recommend the use of only our
genuine manufactured or our authorized
re-manufactured replacement parts
engineered for your vehicle.
Additives and Chemicals
This owner's manual and our Workshop
Manual list the recommended additives and
chemicals for your vehicle. We do not
recommend using chemicals or additives not
approved by us as part of your vehicle
’s
normal maintenance. Please consult your
warranty information. Oils, Fluids and Flushing
In many cases, fluid discoloration is a normal
operating characteristic and, by itself, does
not necessarily indicate a concern or that the
fluid needs to be changed. However, a
qualified expert, such as the factory-trained
technicians at your dealership, should
inspect discolored fluids that also show signs
of overheating or foreign material
contamination immediately.
Make sure to change your vehicle
’s oils and
fluids at the specified intervals or in
conjunction with a repair. Flushing is a viable
way to change fluid for many vehicle
sub-systems during scheduled maintenance.
It is critical that systems are flushed only with
new fluid that is the same as that required
to fill and operate the system or using our
approved flushing chemical.
Owner Checks and Services
Make sure you perform the following basic
maintenance checks and inspections every
month or at six-month intervals.
565
Aviator (CTV) Canada/United States of America, enUSA, Edition date: 202007, Second-Printing Scheduled Maintenance

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.
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.
566
Aviator (CTV) Canada/United States of America, enUSA, Edition date: 202007, Second-Printing Scheduled Maintenance

Check Every Six Months
Seatbelts and seat latches for wear and function.
Safety warning lamps (brake, ABS, airbag and seatbelt) 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
567
Aviator (CTV) Canada/United States of America, enUSA, Edition date: 202007, Second-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 you use
your vehicle. 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.
568
Aviator (CTV) Canada/United States of America, enUSA, Edition date: 202007, Second-Printing Scheduled Maintenance

Normal Maintenance Intervals
At Every Oil Change Interval as Indicated by the Information Display
1
Change the engine oil and filter. 2
Rotate the tires.
Perform a multi-point inspection, recommended.
Inspect the brake pads, rotors, hoses and parking brake.
Inspect the engine cooling system strength and hoses.
Inspect the exhaust system and heat shields.
Inspect the front axle.
Inspect the rear axle and U-joints.
Inspect the half-shaft boots.
Inspect the steering linkage, ball joints, suspension and the tire-rod ends.
Inspect the tires, tire wear and measure the tread depth.
Inspect the wheels and related components for abnormal noise, wear, looseness or drag.
1 Do not exceed one year or 12,500 mi (20,000 km) between service intervals.
2 Reset the Intelligent Oil-Life Monitor after engine oil and filter change\
s.
See Engine Oil Check (page 387).
570
Aviator (CTV) Canada/United States of America, enUSA, Edition date: 202007, Second-Printing Scheduled Maintenance

lubricant will be more likely to require a
change if the vehicle has experienced
extended periods of extreme/severe duty
cycle driving. Changing or checking the PTU
lubricant is not necessary unless the unit has
been submerged in water, shows signs of
leakage or a message indicating required
service is displayed. 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. Ford Motor Company, however,
urges 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.
575
Aviator (CTV) Canada/United States of America, enUSA, Edition date: 202007, Second-Printing Scheduled Maintenance

Manual Park Release ........................................248
SelectShift Automatic ™ Transmission............247
Stay in Neutral Mode.........................................246
Understanding Your Transmission Selector Positions...........................................................245
Automatic Transmission Fluid Check...........................................................395
Auto-Start-Stop - Excluding: Plug-In Hybrid Electric Vehicle (PHEV).............................218
Disabling Auto-Start-Stop..................................219
Enabling Auto-Start-Stop...................................218
Autowipers......................................................106 Autowipers Settings............................................107
Low Temperature Wipe Inhibit.........................
107
Auxiliary Power Points
................................203
110 Volt AC Power Point...................................203
12 Volt DC Power Point.....................................203
USB Port and Power Point Locations............
203
AWD See: All-Wheel Drive.........................................250
B
Battery See: Changing the 12V Battery.......................397
Blind Spot Information System..................312 Blind Spot Information System with Trailer
Tow.....................................................................313 Switching the System On and Off...................316
System Errors.......................................................315
Using the Blind Spot Information
System...............................................................312
BLIS See: Blind Spot Information System...............
312
Body Styling Kits............................................412
Bonnet Lock See: Opening and Closing the Hood............384
Booster Seats..................................................38 Types of Booster Seats.......................................38
Brake Fluid Check
........................................395
Brake Fluid Service Interval.............................396
Brakes
.............................................................257
General Information...........................................257
Breaking-In.....................................................348
Bulb Specification Chart.............................473
C
Canceling the Set Speed...........................290
Capacities and Specifications
...................444
Capacities and Specifications - Excluding: Plug-In Hybrid Electric Vehicle
(PHEV)..........................................................450
Air Conditioning System....................................
451
Alternative Engine Oil for Extremely Cold Climates...........................................................455 Automatic Transmission...................................452
Engine Coolant...................................................453
Engine Oil.............................................................454
Front Axle.............................................................459
Fuel Tank..............................................................456
Grease...................................................................456
Hydraulic Brake System....................................457
Locks.....................................................................458
Rear Axle..............................................................460
Transfer Case......................................................458
Washer Reservoir................................................461
Capacities and Specifications - Plug-In Hybrid Electric Vehicle (PHEV)...............462
Air Conditioning System...................................462
Alternative Engine Oil for Extremely Cold Climates...........................................................466
Automatic Transmission....................................463
Engine Coolant...................................................464
Engine Oil.............................................................465
Front Axle.............................................................470
Fuel Tank..............................................................468
Grease...................................................................468
Hydraulic Brake System...................................468
Locks.....................................................................469
Rear Axle................................................................471
Transfer Case.......................................................470
Washer Reservoir................................................472
649
Aviator (CTV) Canada/United States of America, enUSA, Edition date: 202007, Second-Printing Index

Car Wash
See: Cleaning the Exterior...............................405
Catalytic Converter......................................235
On-Board Diagnostics (OBD-II).......................236
Readiness for Inspection and Maintenance (I/M) Testing......................................................237
Changing a Bulb...........................................403 LED Lamps...........................................................403
Changing a Fuse...........................................381 Fuses......................................................................381
Changing a Road Wheel.............................434 Dissimilar Spare Wheel and Tire Assembly
Information.......................................................435
Tire Change Procedure....................................436
Changing the 12V Battery..........................397 Battery Management System..........................398
Remove and Reinstall the Battery..................399
Changing the Engine Air Filter.................389
Changing the Front Wiper Blades - Vehicles With: Heated Wiper
Blades
...........................................................402
Replacing the Rubber Insert............................402
Changing the Front Wiper Blades - Vehicles Without: Heated Wiper
Blades............................................................401
Installing the Front Wiper Blades ..................402
Removing the Front Wiper Blades.................402
Changing the Rear Wiper Blades.............403 Changing the Vehicle Wi-Fi Hotspot Name
or Password................................................479
Charging the High Voltage Battery - Plug-In Hybrid Electric Vehicle (PHEV)...............238
IMPORTANT SAFETY INSTRUCTIONS.........238
Checking MyKey System Status.................78 MyKey Distance.....................................................78
Number of Admin Keys.......................................79
Number of MyKeys...............................................79
Checking the Interior Air Quality...............175 Particulate Matter Pollution Information........176
Checking the Wiper Blades........................401
Child Restraint and Seatbelt Maintenance.................................................50
Child Restraint Positioning
...........................40
Child Safety......................................................25 General Information.............................................25
Child Safety Locks..........................................42
Cleaning Leather Seats..............................409
Cleaning Products
........................................404
Materials...............................................................404
Cleaning the Engine....................................407
Cleaning the Exterior..................................405 Cleaning the Exterior Lamps...........................405
Cleaning the Exterior Precautions.................405
Exterior Chrome Parts.......................................406
Exterior Plastic Parts..........................................406
Stripes or Graphics............................................406 Underbody...........................................................406
Under Hood.........................................................406
Cleaning the Instrument Panel and Instrument Cluster Lens...........................408
Cleaning the Interior
....................................408
Mirrors...................................................................408
Cleaning the Wheels
....................................410
Cleaning the Windows and Wiper Blades...........................................................407
Clearing All MyKeys
.......................................78
Climate.............................................................518 Accessing Rear Climate Controls...................
521
Accessing the Climate Control Menu............518
Directing the Airflow...........................................518
Rear Climate Control Lock Indicator..............521
Setting the Blower Motor Speed....................519
Setting the Temperature...................................519
Switching Auto Mode On and Off...................
519
Switching Dual Zone Mode On and Off........519
Switching Maximum Air Conditioning On and Off......................................................................520
Switching Maximum Defrost On and Off......................................................................520
Switching Rear Auto Mode On and Off.........521
Switching Recirculated Air On and Off.........520
Switching the Air Conditioning On and Off.......................................................................519
650
Aviator (CTV) Canada/United States of America, enUSA, Edition date: 202007, Second-Printing Index