2023 LINCOLN AVIATOR light

• Do not add unnecessary accessories to
the exterior of your vehicle, for example
running boards. If you use a roof rack,
remember to fold it down or remove it
when not in use.
• Do not shift into neutral when you are
braking or when your vehicle is slowing
down.
• Shut all windows when driving at high
speeds.
• Switch off all electric systems when not
in use, for example air conditioning. Make
sure that you unplug any accessories
from the auxiliary power points when not
in use.
DRIVING THROUGH SHALLOW
WATER
WARNING: Do not attempt to cross
a deep or flowing body of water. Failure to
follow this instruction could result in the
loss of control of your vehicle, personal
injury or death.Note:Driving through standing water can
cause vehicle damage.
Note:Engine damage can occur if water
enters the air filter.
Before driving through standing water, check
the depth. Never drive through water that is
higher than the bottom of the front rocker
area of your vehicle.
66E266447
When driving through standing water, drive
very slowly and do not stop your vehicle.
Your brake performance and traction could
be limited. After driving through water and
as soon as it is safe to do so:• Lightly press the brake pedal to dry the
brakes and to check that they work.
• Turn the steering wheel to check that the
steering power assist works.
Check the function of the following:
• Horn
• Exterior lights
FLOOR MATS
WARNING: Use a floor mat designed
to fit the footwell of your vehicle that does
not obstruct the pedal area. Failure to
follow this instruction could result in the
loss of control of your vehicle, personal
injury or death.
WARNING: Pedals that cannot move
freely can cause loss of vehicle control and
increase the risk of serious personal injury.
362
Driving Hints

The fuel pump shutoff stops the flow of fuel
to the engine in the event of a moderate to
severe crash. Not every impact causes a
shutoff.
Should your vehicle shut off after a crash,
you may restart your vehicle.
If your vehicle has a key system:
1. Switch off the ignition.
2. Switch to start position.
3. Switch off the ignition.
4. Switch on the ignition to re-enable the
fuel pump.
5. If the vehicle does not start, repeat steps
1 through 4.
If your vehicle has a push button start
system:
1. Press START/STOP to switch off your
vehicle.
2. Press the brake pedal and START/STOP
to switch on your vehicle.
3. Remove your foot from the brake pedal
and press START/STOP to switch off
your vehicle.4. You can attempt to start the vehicle by
pressing the brake pedal and
START/STOP, or press START/STOP
without pressing the brake pedal.
5. If the vehicle does not start, repeat steps
1 through 4.
JUMP STARTING THE VEHICLE
WARNING: Batteries normally
produce explosive gases which can cause
personal injury. Therefore, do not allow
flames, sparks or lighted substances to
come near the battery. When working near
the battery, always shield your face and
protect your eyes. Always provide correct
ventilation.
WARNING: Keep batteries out of
reach of children. Batteries contain sulfuric
acid. Avoid contact with skin, eyes or
clothing. Shield your eyes when working
near the battery to protect against possible
splashing of acid solution. In case of acid
contact with skin or eyes, flush immediately
with water for a minimum of 15 minutes and
get prompt medical attention. If acid is
swallowed, call a physician immediately.
WARNING: Use only adequately
sized cables with insulated clamps.
Preparing Your Vehicle
Do not attempt to push-start your automatic
transmission vehicle.
Note:Attempting to push-start a vehicle with
an automatic transmission may cause
transmission damage.
Note:Use only a 12-volt supply to start your
vehicle.
366
Roadside Emergencies

Protected Component Fuse Rating Fuse or Relay Number
Rear blower motor. 20A 88
Trailer tow lighting module. 20A 91
Integrated spark control. 15A 95
Not used (spare). 15A 96
Electric A/C. 10A 97
High voltage positive temperature coefficient heater.
Traction battery coolant proportional valve. 10A 98
Not used (spare). 50A 103
Not used (spare). 50A 104
Not used (spare). 40A 105
Not used (spare). 40A 106
Not used (spare). 40A 107
Not used (spare). 20A 108
Passenger door module. 30A 109
Body control module voltage quality monitor feed. 30A 111
Left-hand rear electronic door. 20A 112
388
Fuses

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.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 579).
Note:Make sure that the coolant level is
between the MIN and the 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.Adding Coolant
WARNING: Do not add coolant
further than the MAX mark.
WARNING: Do not add coolant when
the vehicle is on or the cooling system is
hot. Failure to follow this instruction could
result in personal 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.
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.
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.
404
Maintenance

CHANGING THE 12V BATTERY -
GASOLINE
WARNING: Batteries normally
produce explosive gases which can cause
personal injury. Therefore, do not allow
flames, sparks or lighted substances to
come near the battery. When working near
the battery, always shield your face and
protect your eyes. Always provide correct
ventilation.
WARNING: When lifting a
plastic-cased battery, excessive pressure
on the end walls could cause acid to flow
through the vent caps, resulting in personal
injury and damage to the vehicle or battery.
Lift the battery with a battery carrier or with
your hands on opposite corners.
WARNING: Keep batteries out of
reach of children. Batteries contain sulfuric
acid. Avoid contact with skin, eyes or
clothing. Shield your eyes when working
near the battery to protect against possible
splashing of acid solution. In case of acid
contact with skin or eyes, flush immediately
with water for a minimum of 15 minutes and
get prompt medical attention. If acid is
swallowed, call a physician immediately.
WARNING: Battery posts, terminals
and related accessories contain lead and
lead compounds, chemicals known to the
State of California to cause cancer and
reproductive harm. Wash your hands after
handling.
WARNING: This vehicle may have
more than one battery. Removing the
battery cables from only one battery does
not disconnect your vehicle electrical
system. Make sure you disconnect the
battery cables from all batteries when
disconnecting power. Failure to do so may
cause serious personal injury or property
damage.
WARNING: For vehicles with
Auto-Start-Stop the battery requirement is
different. You must replace the battery with
one of exactly the same specification.
The battery is in the engine compartment.
See Under Hood Overview (page 400).
Your vehicle has a maintenance-free battery.
It does not require additional water during
service.
If the vehicle battery has a cover and vent
hose, make sure you correctly install it after
cleaning or replacing the battery.
410
Maintenance

After battery replacement, or in some cases
after charging the battery with an external
charger, the battery management system
requires eight hours of vehicle sleep time to
relearn the battery state of charge. During
this time, your vehicle must remain fully
locked with the ignition switched off.
Note:Prior to relearning the battery state of
charge, the battery management system
may temporarily disable some electrical
systems.
Electrical Accessory Installation
To make sure the battery management
system works correctly, do not connect an
electrical device ground connection directly
to the battery negative post. This can cause
inaccurate measurements of the battery
condition and potential incorrect system
operation.
Note:If you add electrical accessories or
components to the vehicle, it may adversely
affect battery performance and durability.
This may also affect the performance of
other electrical systems in the vehicle.Remove and Reinstall the Battery
Install a battery approved for use by our
specifications. See Capacities and
Specifications (page 460).
To disconnect or remove the battery, do the
following:
1. Apply the parking brake and switch the
ignition off.
2. Switch all electrical equipment off, for
example lights and radio.
3. Wait a minimum of two minutes before
disconnecting the battery.
Note:The engine management system has
a power hold function and remains powered
for a period of time after you switch the
ignition off. This is to allow the system to
store diagnostic and adaptive tables.
Disconnecting the battery without waiting
can cause damage not covered by the
vehicle warranty.
4. Disconnect the negative battery cable
terminal.
5. Disconnect the positive battery cable
terminal.6. Remove the battery securing clamp.
7. Remove the battery.
8. To install, reverse the removal procedure.
Note:Before reconnecting the battery, make
sure the ignition remains switched off.
Note:Make sure to fully tighten the battery
cables.
If you disconnect or replace the vehicle
battery, you must reset the following
features:
• Window bounce-back. See Power
Windows (page 121).
• Clock Settings.
• Pre-set radio stations.
Battery Disposal
E107998
Make sure that you dispose of old
batteries in an environmentally
friendly way. Seek advice from
your local authority about recycling old
batteries.
412
Maintenance

CHANGING THE 12V BATTERY -
PLUG-IN HYBRID ELECTRIC
VEHICLE (PHEV)
WARNING: Batteries normally
produce explosive gases which can cause
personal injury. Therefore, do not allow
flames, sparks or lighted substances to
come near the battery. When working near
the battery, always shield your face and
protect your eyes. Always provide correct
ventilation.
WARNING: When lifting a
plastic-cased battery, excessive pressure
on the end walls could cause acid to flow
through the vent caps, resulting in personal
injury and damage to the vehicle or battery.
Lift the battery with a battery carrier or with
your hands on opposite corners.
WARNING: Keep batteries out of
reach of children. Batteries contain sulfuric
acid. Avoid contact with skin, eyes or
clothing. Shield your eyes when working
near the battery to protect against possible
splashing of acid solution. In case of acid
contact with skin or eyes, flush immediately
with water for a minimum of 15 minutes and
get prompt medical attention. If acid is
swallowed, call a physician immediately.
WARNING: Battery posts, terminals
and related accessories contain lead and
lead compounds, chemicals known to the
State of California to cause cancer and
reproductive harm. Wash your hands after
handling.
WARNING: This vehicle may have
more than one battery. Removing the
battery cables from only one battery does
not disconnect your vehicle electrical
system. Make sure you disconnect the
battery cables from all batteries when
disconnecting power. Failure to do so may
cause serious personal injury or property
damage.
WARNING: For vehicles with
Auto-Start-Stop the battery requirement is
different. You must replace the battery with
one of exactly the same specification.
The primary battery is in the engine
compartment. See Under Hood Overview
(page 400).
The secondary battery is located behind the
trim panel in the luggage compartment.
413
Maintenance

Battery Management System (If Equipped)
The system monitors battery conditions and
takes actions to extend battery life. If
excessive battery drain is detected, the
system temporarily disables some electrical
systems to protect the battery.
Systems included are:
• Heated rear window.
• Heated seats.
• Climate control.
• Heated steering wheel.
• Audio unit.
• Navigation system.
A message may appear in the information
display to alert you that battery protection
actions are active. This message is only for
notification that an action is taking place, and
not intended to indicate an electrical problem
or that the battery requires replacement.After battery replacement, or in some cases
after charging the battery with an external
charger, the battery management system
requires eight hours of vehicle sleep time to
relearn the battery state of charge. During
this time, your vehicle must remain fully
locked with the ignition switched off.
Note:Prior to relearning the battery state of
charge, the battery management system
may temporarily disable some electrical
systems.
Electrical Accessory Installation
To make sure the battery management
system works correctly, do not connect an
electrical device ground connection directly
to the battery negative post. This can cause
inaccurate measurements of the battery
condition and potential incorrect system
operation.
Note:If you add electrical accessories or
components to the vehicle, it may adversely
affect battery performance and durability.
This may also affect the performance of
other electrical systems in the vehicle.
Remove and Reinstall the Battery
Install a battery approved for use by our
specifications. See Capacities and
Specifications (page 460).
To disconnect or remove the battery, do the
following:
1. Apply the parking brake and switch the
ignition off.
2. Switch all electrical equipment off, for
example lights and radio.
3. Wait a minimum of two minutes before
disconnecting the battery.
Note:The engine management system has
a power hold function and remains powered
for a period of time after you switch the
ignition off. This is to allow the system to
store diagnostic and adaptive tables.
Disconnecting the battery without waiting
can cause damage not covered by the
vehicle warranty.
4. Disconnect the negative battery cable
terminal.
5. Disconnect the positive battery cable
terminal.
415
Maintenance