cooling LINCOLN NAVIGATOR 2021 Owners Manual

Status Bar.
A
Speedometer.
B
Right Information Group.
C
Fuel Gauge.
D
Coolant Gauge.
E
Left Information Group.
F
Status Bar
Displays information related to the current
audio source, compass direction and outside
air temperature.
Left and Right Information Group
Information that appears depends on current
gauge view and on-demand settings. See
General Information (page 134).
Fuel Gauge
The fuel gauge indicates about how much
fuel is in the fuel tank. The arrow adjacent to the fuel pump symbol
indicates on which side of your vehicle the
fuel filler door is located.
Note:
The fuel gauge may vary slightly when
your vehicle is moving or on a slope.
Low Fuel Reminder
A low fuel level reminder displays and
sounds when the distance to empty reaches
75 mi (120 km) to empty for MyKey, and at
50 mi (80 km), 25 mi (40 km), 10 mi (20 km)
and 0 mi (0 km) for all vehicle keys.
Note: The low fuel reminder can appear at
different fuel gauge positions depending on
fuel economy conditions. This variation is
normal. Engine Coolant Temperature Gauge 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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Action
Message
Displays when a MyKey is in use and AdvanceTrac is activated.
AdvanceTrac On - MyKey Setting
Displays when a MyKey is in use and park aid is activated.
MyKey Park Aid Cannot be Deactivated
Displays when the lane keeping aid is on per MyKey settings.
Lane Keeping Alert On MyKey Setting
Off Road Action
Message
Hill descent control mode is active.
Hill Descent Control Active
Hill descent control mode is inactive.
Hill Descent Control OFF
Your vehicle speed requirement for off-road mode entry has not beenmet.
For Hill Descent Reduce Speed XX MPH/km/h or Less
You need to select a transmission gear for hill descent mode.
For Hill Descent Select Gear
Hill descent control mode is deactivated and you must resume control.
Hill Descent Driver Resume Control
Displays when the system requires service. Have the system checkedas soon as possible.
Hill Descent Control Fault
The hill descent system is cooling due to overuse.
Hill Descent Control Off System Cooling
The hill descent control system is ready.
Hill Descent Control Ready
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Note:
The system starts at the previous
setting when you switch on AUTO mode. Note:
You can also switch off dual zone
mode by pressing and holding the button for
more than two seconds.
Auto Mode Indicator Status Description
Auto Mode Indicator Status
One indicator illuminated. •The blower motor speed is reduced.
•Use this setting to minimize the amount of noise from the blower motor.
• This setting increases the time taken to cool the interior.
Two indicators illuminated. •The blower motor speed is moderate.
Three indicators illuminated. •The blower motor speed is increased.
•Use this setting to reduce the time taken to cool the interior.
• This setting increases the amount of noise from the blower motor.
Switching Defrost On and Off Press and release the button to
distribute air through the
windshield air vents and de-mister.
Air directed to the instrument panel and
footwell air vents turns off. You can also use
this setting to defog and clear the windshield
of a thin covering of ice.
Switching the Air Conditioning On and
Off Press and release the button.
Use air conditioning with recirculated air to
improve cooling performance and efficiency.
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Note:
In certain conditions, such as
maximum defrost, the air conditioning
compressor may continue to operate even
though you switch off the air conditioning.
Switching Maximum Air Conditioning
On and Off Press and release the button for
maximum cooling.
The left-hand and right-hand settings set to
LO, recirculated air flows through the
instrument panel air vents, air conditioning
turns on and the blower motor adjusts to the
highest speed.
Switching Recirculated Air On and Off Press and release the button to
switch between outside air and
recirculated air.
The air currently in the passenger
compartment recirculates. This may reduce
the time needed to cool the interior, when
used with A/C, and reduce unwanted odors
from entering your vehicle. Note:
Recirculated air may turn off, or
prevent you from switching on, in all air flow
modes except MAX A/C to reduce the risk
of fogging. Recirculation may also turn on
and off in various air distribution control
combinations during hot weather to improve
cooling efficiency.
Switching the Heated Seats On and Off Switching the Ventilated Seats On and
Off
See
Climate Controlled Seats
(page 193).
HINTS ON CONTROLLING THE
INTERIOR CLIMATE
General Hints
Note: Prolonged use of recirculated air may
cause the windows to fog up. Note:
You may feel a small amount of air
from the footwell air vents regardless of the
air distribution setting.
Note: To reduce humidity build-up inside
your vehicle, do not drive with the system
switched off or with recirculated air always
switched on.
Note: Do not place objects under the front
seats as this may interfere with the airflow
to the rear seats.
Note: Remove any snow, ice or leaves from
the air intake area at the base of the
windshield.
Note: To improve the time to reach a
comfortable temperature in hot weather,
drive with the windows open until you feel
cold air through the air vents.
Automatic Climate Control
Note: Adjusting the settings when your
vehicle interior is extremely hot or cold is not
necessary. Automatic mode is best
recommended to maintain set temperature.
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Note:
The system adjusts to heat or cool the
interior to the temperature you select as
quickly as possible.
Note: For the system to function efficiently,
the instrument panel and side air vents
should be fully open.
Note: If you select AUTO during cold outside
temperatures, the system directs air flow to
the windshield and side window air vents. In
addition, the blower motor may run at a
slower speed until the engine warms up.
Note: If you select
AUTO during hot
temperatures and the inside of the vehicle
is hot, the system uses recirculated air to
maximize interior cooling. Blower motor
speed may also reduce until the air cools.
Quickly Heating the Interior
1. Press and release
AUTO.
2. Adjust the temperature function to the setting you prefer.
Recommended Settings for Heating
1. Press and release
AUTO. 2. Adjust the temperature function to the
setting you prefer. Use
72°F (22°C) as a
starting point, then adjust the setting as
necessary.
Quickly Cooling the Interior
1. Press and release
MAX A/C.
Recommended Settings for Cooling
1. Press and release
AUTO.
2. Adjust the temperature function to the setting you prefer. Use
72°F (22°C) as a
starting point, then adjust the setting as
necessary.
Defogging the Side Windows in Cold
Weather
1. Press and release defrost or maximum defrost.
2. Adjust the temperature control to the setting you prefer. Use
72°F (22°C) as a
starting point, then adjust the setting as
necessary. REAR PASSENGER CLIMATE
CONTROLS
Note:
Depending on your vehicle option
package, the controls may look different
from what you see here.
Directing Air to the Rear Console Air
Vents Press and release the button to
direct airflow to the rear console
air vents.
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PRINCIPLE OF OPERATION
WARNING: Hill descent control
cannot control descent in all surface
conditions and circumstances, such as ice
or extremely steep grades. Hill descent
control is a driver assist system and cannot
substitute for good judgment by the driver.
Failure to do so may result in loss of
vehicle control, crash or serious injury.
Hill descent control allows you to set and
maintain vehicle speed when descending
steep grades in various surface conditions.
Hill descent control can maintain vehicle
speeds on downhill grades between
0 mph
(3 km/h) and 20 mph (32 km/h). Above
20 mph (32 km/h), the system remains
armed, but you cannot use the system to set
or maintain the descent speed. Hill descent control requires a cooling down
interval after a period of sustained use. The
amount of time that the feature can remain
active before cooling varies with conditions.
The system provides a warning in the
message center and a tone sounds when
the system is about to disengage for cooling.
At this time, manually apply the brakes as
needed to maintain descent speed.
USING HILL DESCENT CONTROL
You can switch the hill descent
control on and off through the
information display.
To increase descent speed, press the
accelerator pedal until you reach the desired
speed. To decrease descent speed, press
the brake pedal until you reach the desired
speed.
Whether accelerating or decelerating, once
you reach the desired descent speed,
remove your feet from the pedals and hill
descent control maintains the chosen vehicle
speed. Note:
You may observe noise from the ABS
pump motor during hill descent control
operation. This is a normal characteristic of
the ABS and should be no reason for
concern.
Hill Descent Modes
• At speeds between
2 mph (3 km/h) and
20 mph (32 km/h): Your vehicle maintains
the speed you desire while in this mode.
• At speeds between
20 mph (32 km/h)
and 40 mph (64 km/h): Your vehicle does
not maintain the speed you desire and
you cannot set your descent speed.
• At speeds above 40 mph (64 km/h): You
need to switch this feature back on to
use.
Refer to the Information Display for additional
hill descent control messages.
See
Information Messages (page 139).
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(If Equipped)

Before Towing a Trailer
Practice turning, stopping and backing up to
get the feel of your vehicle-trailer
combination before starting on a trip. When
turning, make wider turns so the trailer
wheels clear curbs and other obstacles.
When Towing a Trailer
•
Do not drive faster than 70 mph
(113 km/h) during the first 500 mi
(800 km).
• Do not make full-throttle starts.
• Check your hitch, electrical connections
and trailer wheel lug nuts thoroughly after
you have traveled
50 mi (80 km).
• When stopped in congested or heavy
traffic during hot weather, place the
transmission in park (P) to aid engine and
transmission cooling and to help A/C
performance.
• Turn off the speed control when carrying
heavy loads or in hilly terrain. The speed
control may turn off automatically when
you are towing on long, steep grades. •
Shift to a lower gear when driving down
a long or steep hill. Do not apply the
brakes continuously, as they may
overheat and become less effective.
• If your transmission has a Grade Assist
or Tow/Haul feature, use this feature
when towing. This provides engine
braking and helps eliminate excessive
transmission shifting for optimum fuel
economy and transmission cooling.
• If your vehicle has AdvanceTrac with
RSC, this system may turn on during
typical cornering maneuvers with a
heavily loaded trailer. This is normal.
Turning the corner at a slower speed
while towing may reduce this tendency.
• If your vehicle has Adaptive suspension,
you can select NORMAL or SPORT drive
control modes for better experience
when towing a trailer.
See Information
Displays (page 134). •
If you are towing a trailer frequently in
hot weather, hilly conditions, at the gross
combined weight rating (or any
combination of these factors), consider
refilling your rear axle with synthetic gear
lubricant (if the axle is not already filled
with it).
See Capacities and
Specifications (page 438).
• Allow more distance for stopping with a
trailer attached. Anticipate stops and
brake gradually.
• Avoid parking on a grade. However, if
you must park on a grade:
1. Turn the steering wheel to point your vehicle tires away from traffic flow.
2. Set your vehicle parking brake.
3. Place the transmission in park (P).
4. Place wheel chocks in the front and back
of the trailer wheels.
Note: Chocks are not included with your
vehicle.
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REDUCED ENGINE PERFORMANCE
WARNING: If you continue to drive
your vehicle when the engine is
overheating, the engine could stop without
warning. Failure to follow this instruction
could result in the loss of control of your
vehicle.
If the engine coolant temperature gauge
needle moves to the upper limit position, the
engine is overheating.
See Gauges (page
127).
You must only drive your vehicle for a short
distance if the engine overheats. The
distance you can travel depends on ambient
temperature, vehicle load and terrain. The
engine continues to operate with limited
power for a short period of time.
If the engine temperature continues to rise,
the fuel supply to the engine reduces. The
air conditioning switches off and the engine
cooling fan operates continually. 1. Gradually reduce your speed and stop
your vehicle as soon as it is safe to do
so.
2. Immediately switch the engine off to prevent severe engine damage.
3. Wait for the engine to cool down.
4. Check the coolant level.
See Engine
Coolant Check (page 383).
5. Have your vehicle checked as soon as possible.
ECONOMICAL DRIVING
Fuel economy is affected by several things
such as how you drive, the conditions you
drive under and how you maintain your
vehicle.
There are some things to keep in mind that
may improve your fuel economy:
• Accelerate and slow down in a smooth,
moderate fashion.
• Drive at steady speeds.
• Anticipate stops; slowing down may
eliminate the need to stop. •
Combine errands and minimize
stop-and-go driving (When running
errands, go to the furthest destination
first and then work your way back home).
• Close the windows for high-speed
driving.
• Drive at reasonable speeds.
• Keep the tires properly inflated and use
only the recommended size.
• Use the recommended engine oil.
• Perform all regularly scheduled
maintenance.
There are also some things you may want to
avoid doing because they reduce your fuel
economy:
• Avoid sudden or hard accelerations.
• Avoid revving the engine before turning
off the car.
• Avoid long idle periods.
• Do not warm up your vehicle on cold
mornings.
• Reduce the use of air conditioning and
heat.
• Avoid using speed control in hilly terrain.
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4. Replace the air filter housing cover and
secure all the clamps. Be careful not to
crimp the filter element edges between
the air filter housing and cover and
ensure that you properly align the tabs
on the edge into the slots. ENGINE COOLANT CHECK 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. WARNING: Do not put coolant in the
windshield washer reservoir. If sprayed on
the windshield, coolant could make it
difficult to see through the windshield. WARNING:
To reduce the risk of
personal injury, make sure the engine is
cool before unscrewing the coolant
pressure relief cap. The cooling system is
under pressure. Steam and hot liquid can
come out forcefully when you loosen the
cap slightly. WARNING:
Do not add coolant
further than the MAX mark.
When the engine is cold, check the
concentration and level of the coolant at the
intervals listed in the scheduled maintenance
information.
See Scheduled Maintenance
(page 539).
Note: Make sure that the coolant level is
between the
MIN and MAX marks on the
coolant reservoir.
Note: Coolant expands when it is hot. The
level may extend beyond the
MAX mark.
Maintain coolant concentration within 48%
to 50%, which equates to a freeze point
between
-29°F (-34°C) and -35°F (-37°C).
Coolant concentration should be checked
using a refractometer. We do not recommend
the use of hydrometers or coolant test strips
for measuring coolant concentration.
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Adding Coolant
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. WARNING:
Do not add engine
coolant when the engine is on or the
cooling system is hot. Failure to follow this
instruction could result in personal injury.
Note: Automotive fluids are not
interchangeable. Take care not to put
engine coolant in the windshield washer fluid
reservoir or windshield washer fluid in the
engine coolant reservoir. Note:
Do not use stop leak pellets, cooling
system sealants, or non-specified additives
as they can cause damage to the engine
cooling or heating systems. Resulting
component damage may not be covered by
the vehicle Warranty.
It is very important to use prediluted coolant
approved to the correct specification in order
to avoid plugging the small passageways in
the engine cooling system.
See Capacities
and Specifications (page 440). Do not mix
different colors or types of coolant in your
vehicle. Mixing of engine coolants or using
an incorrect coolant may harm the engine or
cooling system components and may not be
covered by the vehicle Warranty.
Note: If prediluted coolant is not available,
use the approved concentrated coolant
diluting it to 50/50 with distilled water.
See
Capacities and Specifications (page 440).
Using water that has not been deionised
may contribute to deposit formation,
corrosion and plugging of the small cooling
system passageways. Note:
Coolants marketed for all makes and
models may not be approved to our
specifications and may cause damage to
the cooling system. Resulting component
damage may not be covered by the vehicle
Warranty.
If the coolant level is at or below the
minimum mark, add prediluted coolant
immediately.
To top up the coolant level do the following:
1. Unscrew the cap slowly. Any pressure escapes as you unscrew the cap.
2. Add prediluted coolant approved to the correct specification. See Capacities and
Specifications
(page 440).
3. Add enough prediluted coolant to reach
the correct level.
4. Replace the coolant reservoir cap. Turn the cap clockwise until it contacts the
hard stop.
5. Check the coolant level in the coolant reservoir the next few times you drive
your vehicle. If necessary, add enough
prediluted engine coolant to bring the
coolant level to the correct level.
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