2021 LINCOLN NAVIGATOR engine

The scheduled maintenance items listed in
scheduled maintenance information are
essential to the life and performance of your
vehicle and to its emissions system.
If you use anything other than Lincoln,
Motorcraft or Lincoln-authorized parts for
maintenance replacements or for service of
components affecting emission control, such
non-Lincoln parts should be equivalent to
genuine Lincoln Motor Company parts in
performance and durability.
Illumination of the service engine soon
indicator, charging system warning light or
the temperature warning light, fluid leaks,
strange odors, smoke or loss of engine
power could indicate that the emission
control system is not working properly.
An improperly operating or damaged exhaust
system may allow exhaust to enter the
vehicle. Have a damaged or improperly
operating exhaust system inspected and
repaired immediately.
Do not make any unauthorized changes to
your vehicle or engine. By law, vehicle
owners and anyone who manufactures,
repairs, services, sells, leases, trades
vehicles, or supervises a fleet of vehicles are
not permitted to intentionally remove an
emission control device or prevent it from
working. Information about your vehicle
’s
emission system is on the Vehicle Emission
Control Information Decal located on or near
the engine. This decal also lists engine
displacement.
Please consult your warranty information for
complete details.
On-Board Diagnostics (OBD-II)
Your vehicle has a computer known as the
on-board diagnostics system (OBD-II) that
monitors the engine ’s emission control
system. The system protects the environment
by making sure that your vehicle continues
to meet government emission standards. The
OBD-II system also assists a service
technician in properly servicing your vehicle. When the service engine soon
indicator illuminates, the OBD-II
system has detected a malfunction.
Temporary malfunctions may cause the
service engine soon indicator to illuminate.
Examples are:
1. Your vehicle has run out of fuel—the engine may misfire or run poorly.
2. Poor fuel quality or water in the fuel—the
engine may misfire or run poorly.
3. The fuel fill inlet may not have closed properly. See Refueling (page 218).
4. Driving through deep water—the electrical system may be wet.
You can correct these temporary
malfunctions by filling the fuel tank with good
quality fuel, properly closing the fuel fill inlet
or letting the electrical system dry out. After
three driving cycles without these or any
other temporary malfunctions present, the
service engine soon indicator should stay off
the next time you start the engine. A driving
cycle consists of a cold engine startup
followed by mixed city and highway driving.
No additional vehicle service is required.
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If the service engine soon indicator remains
on, have your vehicle serviced at the first
available opportunity. Although some
malfunctions detected by the OBD-II may not
have symptoms that are apparent, continued
driving with the service engine soon indicator
on can result in increased emissions, lower
fuel economy, reduced engine and
transmission smoothness and lead to more
costly repairs.
Readiness for Inspection and
Maintenance (I/M) Testing
Some state and provincial and local
governments may have
Inspection/Maintenance (I/M) programs to
inspect the emission control equipment on
your vehicle. Failure to pass this inspection
could prevent you from getting a vehicle
registration.
If the service engine soon indicator
is on or the bulb does not work,
your vehicle may need service.
See On-Board Diagnostics. Your vehicle may not pass the I/M test if the
service engine soon indicator is on or not
working properly (bulb is burned out), or if
the OBD-II system has determined that some
of the emission control systems have not
been properly checked. In this case, the
vehicle is not ready for I/M testing.
If the vehicle
’s engine or transmission has
just been serviced, or the battery has
recently run down or been replaced, the
OBD-II system may indicate that the vehicle
is not ready for I/M testing. To determine if
the vehicle is ready for I/M testing, turn the
ignition key to the on position for 15 seconds
without cranking the engine. If the service
engine soon indicator blinks eight times, it
means that the vehicle is not ready for I/M
testing; if the service engine soon indicator
stays on solid, it means that your vehicle is
ready for I/M testing.
The OBD-II system checks the emission
control system during normal driving. A
complete check may take several days.
If the vehicle is not ready for I/M testing, you
can perform the following driving cycle
consisting of mixed city and highway driving: 1. 15 minutes of steady driving on an
expressway or highway followed by 20
minutes of stop-and-go driving with at
least four 30-second idle periods.
2. Allow your vehicle to sit for at least eight
hours with the ignition off. Then, start the
vehicle and complete the above driving
cycle. The vehicle must warm up to its
normal operating temperature. Once
started, do not turn off the vehicle until
the above driving cycle is complete.
If the vehicle is still not ready for I/M testing,
you need to repeat the above driving cycle.
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Note:
This only functions if your 12 volt
battery has power and the starter can spin
the engine. If vehicle battery voltage is not
sufficient, you may require an external 12
volt power source such as jumper cables,
battery charger or jump pack for this feature
to function.
Note: Once in this mode, maintain sufficient
battery voltage or your vehicle returns to
park. WARNING: When doing this
procedure, you need to take the
transmission out of park (P) which means
your vehicle can roll freely. To avoid
unwanted vehicle movement, always fully
apply the parking brake prior to doing this
procedure. Use wheels chocks if
appropriate.
1. Do not press the brake pedal. Press the Start/Stop button.
2. Fully press down on the brake pedal. Keep the brakes applied through step 7.
3. Press the accelerator pedal to the floor and hold through step 7. 4. Press the neutral (N) button on the
transmission selector.
5. Press the neutral (N) button again to enter Stay in Neutral mode.
6. Press and release the push to start button, the transmission needs a
minimum of 2 seconds to exit park.
7. When neutral (N) displays, you can release the brake and accelerator pedals.
To exit Stay in Neutral mode, select a
different gear.
A message appears in your information
display screen when your vehicle has
entered Stay in Neutral mode.
Drive (D)
Drive (D) is the normal driving position for
the best fuel economy. The overdrive
function allows automatic upshifts and
downshifts through gears one through ten. Adaptive Tow/Haul Mode WARNING:
Do not use tow/haul
when the road surface is slippery. Failure
to follow this instruction could result in the
loss of control of your vehicle.
Adaptive tow/haul has two modes, automatic
that is enabled by default and off.
To turn adaptive tow/haul off or on, use the
information display controls.
See General
Information (page 134). The indicator light
illuminates in the instrument cluster.
Key adaptive tow/haul features:
• The system remains in the same mode,
even after a key cycle.
• Is only available in normal drive modes
(Normal 2H and Normal 4A).
The adaptive tow/haul feature improves
transmission operation when towing a trailer
or a heavy load. All transmission gear ranges
are available when using adaptive tow/haul.
For information on towing.
See Towing (page
315).
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SelectShift™ Automatic Transmission
Your vehicle has a SelectShift Automatic
transmission. The SelectShift Automatic
transmission gives you the ability to change
gears up or down, without a clutch, as
desired.
In order to prevent the engine from running
at too low of an RPM, which may cause it to
stall, SelectShift still automatically makes
some downshifts if it has determined that
you have not downshifted in time. Although
SelectShift makes some downshifts for you,
it still allows you to downshift at any time as
long as the SelectShift determines that
damage to the engine does not occur from
over-revving.
Note:
Engine damage may occur if you
maintain excessive engine revving without
shifting.
SelectShift does not automatically upshift,
even if the engine is approaching the RPM
limit. Shift manually by pressing the + paddle.
Pull the + paddle on the steering wheel to
activate SelectShift. •
Pull the right paddle (+) to upshift.
• Pull the left paddle (–) to downshift. SelectShift in drive (D):
Provides a temporary manual mode for
performing more demanding maneuvers
where you require extra control of gear
selection, for example, when towing, downhill
driving or overtaking. This mode holds a
selected gear for a temporary period of time
dependent on driver inputs (for example,
steering or accelerator pedal input).
In SelectShift mode, the instrument cluster
displays your currently selected gear. If you
request a gear, but it is not available due to
vehicle conditions, low speed, too high
engine speed for requested gear selection,
the current gear briefly flashes.
Note:
At full accelerator pedal travel, the
transmission downshifts for maximum
performance.
Note: In low traction conditions, you can pull
away in second gear using SelectShift. To
perform this operation, select drive (D) and
press the + paddle until 2 displays on the
cluster. Your vehicle is now ready to move
in 2nd gear.
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Brake-Shift Interlock Override
WARNING: When doing this
procedure, you need to take the
transmission out of park (P) which means
your vehicle can roll freely. To avoid
unwanted vehicle movement, always fully
apply the parking brake prior to doing this
procedure. Use wheels chocks if
appropriate. WARNING: Do not drive your vehicle
until you verify that the stoplamps are
working. WARNING:
If the parking brake is
fully released, but the brake warning lamp
remains illuminated, the brakes may not
be working properly. Have your vehicle
checked as soon as possible.
Use the brake-shift interlock override to
move your transmission from the park
position in the event of an electrical
malfunction. 1. Apply the parking brake and start the
engine before performing this procedure. 2. Locate your brake-shift interlock access
slot. The slot is located below the CD
player, in your center console storage
bin. The access slot does not have a
label. Note:
Make sure that you correctly identify
the access hole as not to damage the CD
player.
3. Insert a small tool, or screwdriver into the
slot, press in and hold the brake shift
interlock switch, inside the slot on the
console. The shift buttons on the
instrument panel flash when your vehicle
is in override mode.
4. With the override switch still held, press the neutral (N) button to shift from park.
5. Release the override button.
6. You can shift your vehicle to the gear you
prefer and drive.
7. Release the parking brake.
Note: See your authorized dealer as soon
as possible if you use this procedure.
Note: For some markets, this feature is
disabled.
Note: This feature only functions if your 12
volt battery has power.
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Automatic Transmission Adaptive
Learning
This feature may increase durability and
provide consistent shift feel over the life of
your vehicle. A new vehicle or transmission
may have firm shifts, soft shifts or both. This
operation is normal and does not affect
function or durability of the transmission.
Over time, the adaptive learning process fully
updates transmission operation.
If Your Vehicle Gets Stuck in Mud or
Snow
If your vehicle gets stuck in mud or snow,
you may rock it out by shifting between
forward and reverse gears, stopping
between shifts in a steady pattern. Press
lightly on the accelerator in each gear.
Note:
Do not rock your vehicle if the engine
is not at normal operating temperature or
damage to the transmission may occur.
Note: Do not rock your vehicle for more than
a minute or damage to the transmission and
tires may occur, or the engine may overheat.
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Note:
The AdvanceTrac® with RSC® stability
enhancement system can be switched off
by deselecting the feature on the instrument
panel. See Using Traction Control (page
247). This disables the engine management
feature, allowing the vehicle to maintain full
power and enhanced momentum through
the obstacle.
Note: The AdvanceTrac system can take
control of the transfer case clutch and
disable it during driving maneuvers when
necessary.
2H - 4X2
This turns on when you select normal or
conserve. Power is delivered to the rear
wheels only. This mode is appropriate for
normal on-road driving on dry pavement and
provides the best fuel economy. 4A - 4X4 Auto
This turns on when you select excite, normal,
4x4 auto or slippery. It provides electronically
controlled four-wheel drive with power
delivered to all four wheels, as required, for
increased traction. 4A is calibrated in
conjunction with drive mode. Using 4A in
excite is less aggressively tuned and is
appropriate for dry road surfaces. Using 4A
in normal and 4x4 auto is appropriate for all
on-road driving conditions, such as dry road
surfaces, wet pavement, light snow or gravel.
Using 4A in slippery is more aggressively
tuned and is appropriate for slippery
surfaces, such as light snow or gravel.
4H - 4X4 High
This turns on when you select deep
conditions. It provides electronically locked
four-wheel drive power to both the front and
rear wheels for use in off-road or winter
conditions such as deep snow, sand or mud.
This mode is not for use on dry pavement.4L - 4X4 Low (If Equipped)
This turns on when you select slow climb. It
provides electronically locked four-wheel
drive power to both the front and rear wheels
for use on low traction surfaces, but does so
with additional gearing for increased torque
multiplication. Intended only for off-road
applications such as deep sand, steep slopes
or pulling heavy objects. Using 4L does not
engage when your vehicle is moving above
3 mph (5 km/h)
. This is normal and is no
reason for concern.
Shifting Between Four-Wheel Drive System
Modes
Note: Momentarily releasing the accelerator
pedal when a shift in progress message
displays improves engagement and
disengagement performance.
Note: Do not perform this operation if the
rear wheels are slipping.
Note: You may hear some noise as the
system shifts or engages, This is normal.
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(If Equipped)

It may be safer to stay on the shoulder of the
road and slow down gradually before
returning to the road. You may lose control
if you do not slow down or if you turn the
steering wheel too sharply or abruptly.
It may be less risky to strike small objects,
such as freeway reflectors, with minor
damage to your vehicle rather than attempt
a sudden return to the road which could
cause your vehicle to slide sideways out of
control or roll over. Remember, your safety
and the safety of others should be your
primary concern.
If Your Vehicle Gets Stuck
WARNING: Do not spin the wheels
at over 34 mph (55 km/h). The tires may
fail and injure a passenger or bystander.
If your vehicle gets stuck in mud or snow it
may be rocked out by shifting between
forward and reverse gears, stopping
between shifts, in a steady pattern. Press
lightly on the accelerator in each gear. Note:
Do not rock your vehicle if the engine
is not at normal operating temperature or
damage to the transmission could occur.
Note: Do not rock your vehicle for more than
a minute or damage to the transmission and
tires may occur or the engine could
overheat.
Emergency Maneuvers
In an unavoidable emergency where a
sudden sharp turn must be made, remember
to avoid over-driving your vehicle, for
example, turn the steering wheel only as
rapidly and as far as required to avoid the
emergency. Excessive steering can result in
loss of vehicle control. Apply smooth
pressure to the accelerator pedal or brake
pedal when changes in vehicle speed are
required. Avoid abrupt steering, acceleration
and braking. This could result in an increased
risk of vehicle roll over, loss of vehicle control
and personal injury. Use all of the available
road surface to bring your vehicle to a safe
direction of travel. In the event of an emergency stop, avoid
skidding the tires and do not attempt any
sharp steering wheel movements.
If your vehicle goes from one type of surface
to another such as from concrete to gravel,
there may be a change in the way your
vehicle responds to a maneuver, for
example, steering, acceleration or braking.
Sand
When driving over sand, try to keep all four
wheels on the most solid area of the trail.
Avoid reducing the tire pressures but shift
to a lower gear and drive steadily through
the terrain. Apply the accelerator slowly and
avoid excessive wheel slip.
Avoid driving at excessive speeds, this
causes vehicle momentum to work against
you and your vehicle could become stuck to
the point that assistance may be required
from another vehicle. Remember, you may
be able to back out the way you came if you
proceed with caution.
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(If Equipped)