
To reduce risk of electrical shock, always replace the cover to
the Power Distribution Box before reconnecting the battery or
refilling fluid reservoirs.
If the battery has been disconnected and reconnected, refer to the
Batterysection of theMaintenance and Specificationschapter.
The high-current fuses are coded as follows:
Fuse/Relay
LocationFuse Amp
RatingPower Distribution Box Description
1 — Blower relay
2 — Not used
3 — Rear window defroster relay
4 30A** Third row seats (driver side)
5 30A** Trailer tow connector (electric brake)
6 60A ** ABS (valves)
7 40A** Power running boards
8 40A** Heated/cooled seats
9 60A** ABS (pump)
10 20A** Rear console power point
11 30A** Auxiliary blower
12 25A* Trailer tow connector (park lamps)
13 30A* Trailer tow connector (battery charge)
14 — Not used
2008 Navigator(nav)
Owners Guide (post-2002-fmt)
USA(fus)
Roadside Emergencies
272

Fuse/Relay
LocationFuse Amp
RatingPower Distribution Box Description
75 5A* 4x4 Integrated Wheel Ends (IWE) solenoid
76 20A* PCM – VPWR
77 10A* ABS logic, Heated PCV
* Mini Fuses ** Cartridge Fuses
CHANGING THE TIRES
If you get a flat tire while driving, do not apply the brake heavily.
Instead, gradually decrease your speed. Hold the steering wheel firmly
and slowly move to a safe place on the side of the road.
Note:The tire pressure monitoring system (TPMS) indicator light will
illuminate when the spare tire is in use. To restore the full functionality
of the monitoring system, all road wheels equipped with tire pressure
monitoring sensors must be mounted on the vehicle.
Have a flat serviced by an authorized dealer in order to prevent damage
to the TPMS sensors, refer toTire Pressure Monitoring System
(TPMS)in theTires, Wheels and Loadingchapter. Replace the spare
tire with a road tire as soon as possible.
The use of tire sealants may damage your Tire Pressure
Monitoring System and should not be used.
Refer toTire Pressure Monitoring System (TPMS)in theTires,
Wheels and Loadingchapter for important information. If the tire
pressure monitor sensor becomes damaged, it will no longer function.
Dissimilar spare tire/wheel information
Failure to follow these guidelines could result in an increased
risk of loss of vehicle control, injury or death.
If you have a dissimilar spare tire/wheel, then it is intended for
temporary use only. This means that if you need to use it, you should
replace it as soon as possible with a road tire/wheel that is the same size
and type as the road tires and wheels that were originally provided by
Ford. If the dissimilar spare tire or wheel is damaged, it should be
replaced rather than repaired.
2008 Navigator(nav)
Owners Guide (post-2002-fmt)
USA(fus)
Roadside Emergencies
275

swallowed can cause death or permanent injury. If fuel is swallowed,
call a physician immediately, even if no symptoms are immediately
apparent. The toxic effects of fuel may not be visible for hours.
•Avoid inhaling fuel vapors. Inhaling too much fuel vapor of any kind
can lead to eye and respiratory tract irritation. In severe cases,
excessive or prolonged breathing of fuel vapor can cause serious
illness and permanent injury.
•Avoid getting fuel liquid in your eyes. If fuel is splashed in the eyes,
remove contact lenses (if worn), flush with water for 15 minutes and
seek medical attention. Failure to seek proper medical attention could
lead to permanent injury.
•Fuels can also be harmful if absorbed through the skin. If fuel is
splashed on the skin and/or clothing, promptly remove contaminated
clothing and wash skin thoroughly with soap and water. Repeated or
prolonged skin contact with fuel liquid or vapor causes skin irritation.
•Be particularly careful if you are taking “Antabuse” or other forms of
disulfiram for the treatment of alcoholism. Breathing gasoline vapors,
or skin contact could cause an adverse reaction. In sensitive
individuals, serious personal injury or sickness may result. If fuel is
splashed on the skin, promptly wash skin thoroughly with soap and
water. Consult a physician immediately if you experience an adverse
reaction.
When refueling always shut the engine off and never allow
sparks or open flames near the filler neck. Never smoke while
refueling. Fuel vapor is extremely hazardous under certain conditions.
Care should be taken to avoid inhaling excess fumes.
The flow of fuel through a fuel pump nozzle can produce static
electricity, which can cause a fire if fuel is pumped into an
ungrounded fuel container.
2008 Navigator(nav)
Owners Guide (post-2002-fmt)
USA(fus)
Maintenance and Specifications
324

Refueling
Fuel vapor burns violently and a fuel fire can cause severe
injuries. To help avoid injuries to you and others:
•Read and follow all the instructions on the pump island;
•Turn off your engine when you are refueling;
•Do not smoke if you are near fuel or refueling your vehicle;
•Keep sparks, flames and smoking materials away from fuel;
•Stay outside your vehicle and do not leave the fuel pump unattended
when refueling your vehicle — this is against the law in some places;
•Keep children away from the fuel pump; never let children pump
fuel.
Use the following guidelines to avoid electrostatic charge build-up when
filling an ungrounded fuel container:
•Place approved fuel container on the ground.
•DO NOT fill a fuel container while it is in the vehicle (including the
cargo area).
•Keep the fuel pump nozzle in contact with the fuel container while
filling.
•DO NOT use a device that would hold the fuel pump handle in the fill
position.
Fuel Filler Cap
Your fuel tank filler cap has an indexed design with a 1/4 turn on/off
feature.
When fueling your vehicle:
1. Turn the engine off.
2. Carefully turn the filler cap counterclockwise 1/4 turn until it stops.
3. Pull to remove the cap from the fuel filler pipe.
4. To install the cap, align the tabs on the cap with the notches on the
filler pipe.
5. Turn the filler cap clockwise 1/4 of a turn until at least a few clicks are
heard.
If the check fuel cap lamp
or a “check fuel cap” message come on,
the fuel filler cap may not be properly installed. The lamp or message
can come on after several driving events after you’ve refueled your
vehicle.
2008 Navigator(nav)
Owners Guide (post-2002-fmt)
USA(fus)
Maintenance and Specifications
325

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.
2008 Navigator(nav)
Owners Guide (post-2002-fmt)
USA(fus)
Maintenance and Specifications
337

A
ABS (see Brakes) .....................238
Accessory delay ..........................91
AdvanceTrac ..............................240
Air cleaner filter .......335–336, 338
Air suspension ...........................245
description ..............................245
Airbag supplemental restraint
system ........................171, 175, 177
and child safety seats ............173
description ..............171, 175, 177
disposal ....................................180
driver airbag ............173, 176, 178
indicator light .................175, 180
operation .................173, 176, 178
passenger airbag .....173, 176, 178
side airbag ...............................175
Antifreeze
(see Engine coolant) ................317
Anti-lock brake system
(see Brakes) ..............................238
Anti-theft system
arming the system ..................139
Audio system (see Radio) .........20
Automatic transmission
driving an automatic
overdrive .................................248
fluid, adding ............................335
fluid, checking ........................335
fluid, refill capacities ..............339
fluid, specification ..................339
Auxiliary input jack (Line in) ....27
Auxiliary power point .................88
Axle
lubricant specifications ..........339
refill capacities ........................339
B
Battery .......................................315acid, treating emergencies .....315
jumping a disabled battery ....284
maintenance-free ....................315
replacement, specifications ...338
servicing ..................................315
Belt-Minder.............................167
Booster seats .............................181
Brakes ........................................237
anti-lock ...................................238
anti-lock brake system (ABS)
warning light ...........................238
fluid, checking and adding ....335
fluid, refill capacities ..............339
fluid, specifications .................339
lubricant specifications ..........339
parking ....................................239
shift interlock ..........................247
Bulbs ............................................77
C
Capacities for refilling fluids ....339
Cargo management system ......123
Cell phone use ..............................8
Changing a tire .........................275
Child safety restraints ..............181
child safety belts ....................181
Child safety seats ......................184
in front seat ............................186
in rear seat ......................186, 188
Child safety seats - booster
seats ...........................................181
Cleaning your vehicle
engine compartment ..............303
instrument panel ....................304
interior .............................305–306
plastic parts ............................303
washing ....................................301
2008 Navigator(nav)
Owners Guide (post-2002-fmt)
USA(fus)
Index
347

L
Lamps
autolamp system .......................72
bulb replacement
specifications chart ..................77
daytime running light ...............73
fog lamps ...................................72
headlamps .................................72
headlamps, flash to pass ..........73
interior lamps .....................76, 78
replacing bulbs .........................81
Lane change indicator
(see Turn signal) ........................75
Liftgate ..............119, 122, 130–131
Lights, warning and indicator ....12
anti-lock brakes (ABS) ..........238
Load limits .................................217
Loading instructions .................223
Locks
autolock ...................................124
childproof ................................128
doors ........................................124
Lubricant specifications ...........339
Lug nuts ....................................283
Luggage rack .............................123
Lumbar support, seats .............142
M
Message center .........................106
english/metric button .............113
system check button ..............114
warning messages ...................114
Mirrors ...................................91–92
automatic dimming rearview
mirror ........................................92
fold away ...................................93heated ........................................93
programmable memory ..........132
signal .........................................94
Moon roof ..................................101
Motorcraft parts ........306, 323, 338
N
Navigation system .......................64
O
Octane rating ............................327
Oil (see Engine oil) ..................312
P
Panic alarm feature, remote
entry system ..............................131
Parking brake ............................239
Parts (see Motorcraft parts) ....338
Pedals (see Power adjustable
foot pedals) .................................94
Power adjustable foot pedals .....94
Power deployable running
boards ..........................................94
Power distribution box
(see Fuses) .......................269, 271
Power door locks ......................124
Power liftgate ............................119
Power mirrors .............................92
Power point .................................88
Power steering ..................244–245
fluid, checking and adding ....334
fluid, refill capacity ................339
fluid, specifications .................339
Power Windows ...........................89
2008 Navigator(nav)
Owners Guide (post-2002-fmt)
USA(fus)
Index
350