Page 6 of 481

Maintenance 275
General information...................................275
Opening and closing the hood............................276
Under hood overview..................................277
Engine oil dipstick....................................278
Engine oil check......................................278
Engine coolant check..................................279
Automatic transmission fluid check........................283
Brake fluid check.....................................284
Fuel filter...........................................284
Washer fluid check....................................285
Battery ............................................285
Checking the wiper blades..............................286
Changing the wiper blades..............................287
Air filter(s).........................................288
Adjusting the headlamps................................291
Changing a bulb......................................292
Removing a headlamp..................................293
Vehicle Care 298
Cleaning products.....................................298
Cleaning the exterior..................................298
Waxing.............................................300
Repairing minor paint damage............................300
Cleaning the engine...................................300
Cleaning the windows and wiper blades.....................301
Cleaning the interior...................................301
Cleaning the instrument panel and instrument cluster lens.......302
Cleaning leather seats..................................303
Cleaning the alloy wheels...............................303
Vehicle storage.......................................304
6Table of Contents
2013 Navigator(nav)
Owners Guide gf, 1st Printing
USA(fus)
Page 10 of 481
SYMBOL GLOSSARY
WARNING:You risk death or serious injury to yourself and
others if you do not follow the instruction highlighted by the
warning symbol.
These are some of the symbols you may see on your vehicle.
Symbol Description Symbol Description Symbol Description
Safety alertSee Owner’s
ManualAnti-lock
braking
system
Avoid
smoking,
flames, or
sparksBatteryBattery acid
Brake fluid –
non
petroleum
baseBrake systemCabin air
filter
Check fuel
capChild Safety
Door Lock
and UnlockChild seat
lower anchor
Child seat
tether anchorCruise controlDo not open
when hot
Engine air
filterEngine
coolantEngine
coolant
temperature
Engine oilExplosive gasFan warning
Fasten safety
beltFront airbagFront fog
lamps
Fuel pump
resetFuse
compartmentHazard
warning
flasher
10Introduction
2013 Navigator(nav)
Owners Guide gf, 1st Printing
USA(fus)
Page 160 of 481

Cooled Seats
The cooled seats will only function when the engine is running.
To operate the cooled seats:
Press the cooled seat symbol to cycle through the various
cooling settings and off. Cooler settings are indicated by
more indicator lights.
If the engine falls below 350 RPMs while the cooled seats are on, the
feature will turn itself off and will need to be reactivated.
Heated and Cooled Seats Air Filter Replacement (If Equipped)
The heated and cooled seat system includes air filters that must be
replaced periodically. Seescheduled maintenance informationfor
more information.
There is a filter located under each front seat. The filter can be accessed
from the second row seat. Move the front seats all the way forward and
up to ease access.
To remove a filter:
1. Remove the key from the
ignition.
2. Press up on the outside rigid
edge of the filter and rotate
counterclockwise once the tabs are
released.
3. Remove the filter.
To install a filter:
1. First, position the filter in its
housing making sure that the far
forward end is all the way up in the
housing.
2. Then push in on the center of the
outside edge of the filter and rotate
up into the housing until it clips
into position.
A/C
160Seats
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USA(fus)
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UNDER HOOD OVERVIEW
5.4L V8
A. Windshield washer fluid reservoir
B. Engine oil dipstick
C. Brake fluid reservoir
D. Engine coolant reservoir
E. Air filter assembly
F. Power steering fluid reservoir
G. Power distribution box
H. Engine oil filler cap
I. Battery
WASHER FLUID O
NLY
ABCD
EFGHI
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BRAKE FLUID CHECK
Fluid levels between the MIN and MAX lines are within the normal
operating range; there is no need to add fluid. If the fluid levels are outside
of the normal operating range, the performance of the system could be
compromised; seek service from your authorized dealer immediately.
POWER STEERING FLUID CHECK
Check the power steering fluid. Refer toscheduled maintenance
information.
1. Start the engine and let it run until it reaches normal operating
temperature (the engine coolant temperature gauge indicator will be
near the center of the normal area between H and C).
2. While the engine idles, turn the steering wheel left and right several
times.
3. Turn the engine off.
4. Check the fluid level in the reservoir. It should be between the MIN
and MAX lines. Do not add fluid if the level is in this range.
5. If the fluid is low, add fluid in small amounts, continuously checking
the level until it reaches the range between the MIN and MAX lines. Be
sure to put the cap back on the reservoir. Refer to theCapacities and
Specificationschapter for the proper fluid type.
FUEL FILTER
Your vehicle is equipped with a lifetime fuel filter that is integrated with
the fuel tank. Regular maintenance or replacement is not needed.
WASHER FLUID CHECK
WARNING:If you operate your vehicle in temperatures below
40°F (5°C), use washer fluid with antifreeze protection. Failure
to use washer fluid with antifreeze protection in cold weather could
result in impaired windshield vision and increase the risk of injury or
accident.
Add fluid to fill the reservoir if the level is low. Only use a washer fluid
that meets Ford specifications. See the technical specifications chart in
theCapacities and Specificationschapter.
Note:The front and rear washer systems are supplied from the same
reservoir.
284Maintenance
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USA(fus)
Page 288 of 481

4. To attach the new wiper to the
wiper arm, align the cross pin and
keyway (denoted with the arrows)
and firmly press the wiper blade
into the wiper arm until an audible
snap is heard.
If you find this procedure too difficult, please see your dealer.
AIR FILTER CHECK
WARNING:To reduce the risk of vehicle damage and/or personal
burn injuries do not start your engine with the air cleaner
removed and do not remove it while the engine is running.
Note:Failure to use the correct air filter element may result in severe
engine damage. The customer warranty may be void for any damage to
the engine if the correct air filter element is not used.
When changing the air filter element, use only the air filter element
listed. Refer toMotorcraftpart numbersin theCapacities and
Specificationschapter.
Refer toScheduled Maintenancefor the appropriate intervals for
changing the air filter element.
Note:Failure to use the correct air filter element may result in severe
engine damage. The customer warranty may be void for any damage to
the engine if the correct air filter element is not used.
288Maintenance
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Changing the Air Filter Element
1. Locate the mass air flow sensor
electrical connector on the air
outlet tube. This connector will
need to be unplugged.
2. Unlock the locking clip on the
connector (connector shown from
below for clarity), then squeeze and
pull the connector off of the air
outlet tube.
3. Clean the area around the air
tube to air cover connection to
prevent debris from entering the
system and then loosen the bolt on
the air tube clamp so the clamp is
no longer snug to the air tube. It is
not necessary to completely remove
the clamp.
4. Pull the air tube off from the air
cleaner housing.
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5. Release the three clamps that secure
the cover to the air filter housing. Push
the air filter cover toward the center of
the vehicle and up slightly to release it.
6. Remove the air filter element
from the air filter housing.
7. Install a new air filter element.
8. Replace the air filter housing
cover and secure the clamps. Be
careful not to crimp the filter
element edges between the air filter
housing and cover and ensure that
the tabs on the edge are properly
aligned into the slots.
9. Slip the air tube onto the air
filter housing and tighten the
air-tube clamp bolt snugly, but do
not overtighten it.
10. Reconnect the mass air flow
sensor electrical connector to the
outlet tube. Make sure the locking
tab on the connector is in the
“locked” position (connector shown
from below for clarity).
290Maintenance
2013 Navigator(nav)
Owners Guide gf, 1st Printing
USA(fus)