
Fuse/Relay
LocationFuse Amp
RatingPassenger Compartment Fuse Panel
Description
1 30A Smart window #1
2 15A Driver side power seat memory
3 15A FES, Audio rear seat controls, SDARS
4 30A Smart window #2
5 10A Keypad illumination, 3rd row seat enable,
Brake Shift Interlock (BSI), SPDJB
6 20A Turn signals
7 10A Low beam headlamps (left)
8 10A Low beam headlamps (right)
9 15A Interior lights
10 15A Switch backlighting, Puddle lamps
11 10A Not used (Spare)
12 7.5A Power mirror switch, Driver seat switch
13 7.5A Not used (Spare)
14 10A Clock, Power liftgate module – keep-alive
power, Power running board module –
keep-alive power
15 10A Climate control
16 15A Not used (Spare)
17 20A All lock motor feeds, Liftgate release,
Liftglass release
18 20A Not used (Spare)
19 25A Rear wiper
20 15A Adjustable pedals, Datalink
21 15A Fog lamps, Cornering lamps
22 15A Park lamps relay
23 15A High beam headlamps
24 20A Horn relay
25 10A Demand lamps, Glovebox, Visor
26 10A Instrument panel cluster
27 20A Ignition switch
28 5A Radio
2008 Navigator(nav)
Owners Guide (post-2002-fmt)
USA(fus)
Roadside Emergencies
270

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

considered normal and will not affect function or durability of the
transmission. Over time, the adaptive learning process will fully update
transmission operation.
1.Use only a 12–volt supply to start your vehicle.
2. Do not disconnect the battery of the disabled vehicle as this could
damage the vehicle’s electrical system.
3. Park the booster vehicle close to the hood of the disabled vehicle
making sure the two vehiclesdo nottouch. Set the parking brake on
both vehicles and stay clear of the engine cooling fan and other moving
parts.
4. Check all battery terminals and remove any excessive corrosion before
you attach the battery cables. Ensure that vent caps are tight and level.
5. Turn the heater fan on in both vehicles to protect from any electrical
surges. Turn all other accessories off.
Connecting the jumper cables
1. Connect the positive (+) jumper cable to the positive (+) terminal of
the discharged battery.
Note:In the illustrations,lightning boltsare used to designate the
assisting (boosting) battery.
+–+–
2008 Navigator(nav)
Owners Guide (post-2002-fmt)
USA(fus)
Roadside Emergencies
285

•Some automatic car washes may cause damage to the finish on your
wheel rims or covers. Chemical-strength cleaners, or cleaning
chemicals, in combination with brush agitation to remove brake dust
and dirt, could wear away the clearcoat finish over time.
•Do not use hydrofluoric acid-based or high caustic-based wheel
cleaners, steel wool, fuels or strong household detergent.
•To remove tar and grease, use Motorcraft Bug and Tar Remover
(ZC-42), available from your authorized dealer.
ENGINE
Engines are more efficient when they are clean because grease and dirt
buildup keep the engine warmer than normal. When washing:
•Take care when using a power washer to clean the engine. The
high-pressure fluid could penetrate the sealed parts and cause
damage.
•Do not spray a hot engine with cold water to avoid cracking the
engine block or other engine components.
•Spray Motorcraft Engine Shampoo and Degreaser (ZC-20) on all parts
that require cleaning and pressure rinse clean.
•Cover the highlighted areas to prevent water damage when cleaning
the engine.
•Never wash or rinse the engine while it is running; water in the
running engine may cause internal damage.
PLASTIC (NON-PAINTED) EXTERIOR PARTS
Use only approved products to clean plastic parts. These products are
available from your authorized dealer.
2008 Navigator(nav)
Owners Guide (post-2002-fmt)
USA(fus)
Cleaning
303

•Idling for long periods of time (greater than one minute) may waste
fuel.
•Anticipate stopping; slowing down may eliminate the need to stop.
•Sudden or hard accelerations may reduce fuel economy.
•Slow down gradually.
•Driving at reasonable speeds (traveling at 55 mph [88 km/h] uses 15%
less fuel than traveling at 65 mph [105 km/h]).
•Revving the engine before turning it off may reduce fuel economy.
•Using the air conditioner or defroster may reduce fuel economy.
•You may want to turn off the speed control in hilly terrain if
unnecessary shifting between the top gears occurs. Unnecessary
shifting of this type could result in reduced fuel economy.
•Warming up a vehicle on cold mornings is not required and may
reduce fuel economy.
•Resting your foot on the brake pedal while driving may reduce fuel
economy.
•Combine errands and minimize stop-and-go driving.
Maintenance
•Keep tires properly inflated and use only recommended size.
•Operating a vehicle with the wheels out of alignment will reduce fuel
economy.
•Use recommended engine oil. Refer toMaintenance product
specifications and capacitiesin this chapter.
•Perform all regularly scheduled maintenance items. Follow the
recommended maintenance schedule and owner maintenance checks
found inscheduled maintenance information.
Conditions
•Heavily loading a vehicle or towing a trailer may reduce fuel economy
at any speed.
•Carrying unnecessary weight may reduce fuel economy (as much as
1 mpg [0.4 km/L] is lost for every 400 lb [180 kg] of weight carried).
•Adding certain accessories to your vehicle (for example; bug
deflectors, rollbars/light bars, running boards, ski/luggage racks) may
reduce fuel economy.
•Using fuel blended with alcohol may lower fuel economy.
2008 Navigator(nav)
Owners Guide (post-2002-fmt)
USA(fus)
Maintenance and Specifications
330

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

alignment ................................205
care ..........................................201
changing ..........................275, 279
checking the pressure ............201
inflating ...................................199
label .........................................211
replacing ..................................203
rotating ....................................205
safety practices .......................204
sidewall information ...............206
snow tires and chains ............217
spare tire .................................275
terminology .............................199
tire grades ...............................198
treadwear ........................198, 202
Towing .......................................223
recreational towing .................231
trailer towing ..........................223
wrecker ....................................291
Transmission .............................247
brake-shift interlock (BSI) ....247
fluid, checking and adding
(automatic) .............................335
fluid, refill capacities ..............339
lubricant specifications ..........339
Trunk .................................130–131Turn signal ..................................75
V
Vehicle Identification Number
(VIN) ..........................................343
Vehicle loading ..........................217
Ventilating your vehicle ...........235
W
Warning lights (see Lights) .......12
Washer fluid ..............................310
Water, Driving through .............264
Windows
power .........................................89
rear wiper/washer .....................84
Windshield washer fluid and
wipers ..........................................83
checking and adding fluid .....310
liftgate reservoir .....................310
replacing wiper blades ...........311
Wrecker towing .........................291
2008 Navigator(nav)
Owners Guide (post-2002-fmt)
USA(fus)
Index
352