
Fuse/Relay
LocationFuse Amp
RatingPassenger Compartment Fuse Panel
Description
29 5A Instrument panel cluster
30 5A Not used (Spare)
31 10A Compass, Automatic dimming rear view
mirror
32 10A Restraints control module
33 10A Not used (Spare)
34 5A Not used (spare)
35 10A Rear park assist, 4x4, rear video camera
36 5A PATS transceiver
37 10A Climate control
38 20A Subwoofer/Amp (Audiophile radio), THX
Amp/DSP
39 20A Radio
40 20A THX Amp/DSP
41 15A Not used (Spare)
42 10A Trailer tow battery charge coil
43 10A Rear wiper logic
44 10A Not used (Spare)
45 5A Front wiper logic
46 7.5A Climate control, Auxiliary relay control
47 30A Circuit
BreakerPower windows, Moon roof
48 — Delayed accessory relay
Power distribution box
The power distribution box is located in the engine compartment. The
power distribution box contains high-current fuses that protect your
vehicle’s main electrical systems from overloads.
Always disconnect the battery before servicing high current
fuses.
2008 Navigator(nav)
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Roadside Emergencies
271

Fuse/Relay
LocationFuse Amp
RatingPower Distribution Box Description
15 — Not used
16 — A/C clutch relay
17 — Driver side HID headlamp relay
18 — Fuel pump relay
19 — Back-up relay
20 — Trailer tow connector relay (left turn signal)
21 —
Trailer tow connector relay (right turn signal)
22 — Passenger side HID headlamp relay
23 15A* Heated mirrors
24 40A** Blower motor
25 — Not used
26 — Not used
27 30A** Power liftgate
28 40A** Rear window defroster, Heated mirror
29 30A** Passenger seat
30 10A* A/C clutch
31 15A* Brake lamps
32 20A* Fuel pump
33 20A* Back-up lamps
34 25A* Trailer tow connector (stop/turn lamps)
35 20A* 4x4 module
36 10A* Powertrain Control Module (PCM) – Keep
alive power, Canister vent
37 15A* Transmission B+
38 30A** Third row seats (passenger side)
39 60A** Air suspension pump
40 30A** Starter motor
41 20A** IP/Console power point
42 — Not used
43 — Not used
44 20A** Driver side HID headlamp
2008 Navigator(nav)
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Roadside Emergencies
273

bumpers and other chrome parts; allow the cleaner to dry for a few
minutes, then wipe off the haze with a clean, dry rag.
•Never use abrasive materials such as steel wool or plastic pads
as they can scratch the chrome surface.
•After polishing chrome bumpers, apply a coating of Motorcraft
Premium Liquid Wax (ZC-53-A), available from your authorized dealer,
or an equivalent quality product to help protect from environmental
effects.
WAXING
Applying Motorcraft Paint Sealant (ZC-45) to your vehicle every six
months will assist in reducing minor scratches and paint damage.
•Wash the vehicle first.
•Do not use waxes that contain abrasives; use Motorcraft Premium
Liquid Wax (ZC-53-A), which is available from your authorized dealer,
or an equivalent quality product.
•Do not allow paint sealant to come in contact with any non-body
(low-gloss black) colored trim, such as grained door handles, roof
racks, bumpers, side moldings, mirror housings or the windshield cowl
area. The paint sealant will “gray” or stain the parts over time.
PAINT CHIPS
Your authorized dealer has touch-up paint to match your vehicle’s color.
Take your color code (printed on a sticker in the driver’s door jamb) to
your authorized dealer to ensure you get the correct color.
•Remove particles such as bird droppings, tree sap, insect deposits, tar
spots, road salt and industrial fallout before repairing paint chips.
•Always read the instructions before using the products.
ALUMINUM WHEELS AND WHEEL COVERS
Aluminum wheels and wheel covers are coated with a clearcoat paint
finish. In order to maintain their shine:
•Clean weekly with Motorcraft Wheel and Tire Cleaner (ZC-37-A),
which is available from your authorized dealer. Heavy dirt and brake
dust accumulation may require agitation with a sponge. Rinse
thoroughly with a strong stream of water.
•Never apply any cleaning chemical to hot or warm wheel rims or
covers.
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USA(fus)
Cleaning
302

Family entertainment system ....35
Floor mats .................................118
Fluid capacities .........................339
Foglamps .....................................72
Four-Wheel Drive vehicles .......256
control trac .............................256
description ..............................256
driving off road .......................257
indicator light .........................256
preparing to drive your
vehicle .....................................246
Fuel ............................................323
calculating fuel
economy ..........................109, 328
cap ...........................................325
capacity ...................................339
choosing the right fuel ...........326
comparisons with EPA fuel
economy estimates .................331
detergent in fuel .....................327
filling your vehicle
with fuel ..................323, 325, 328
filter, specifications ........323, 338
fuel pump shut-off switch .....267
improving fuel economy ........328
octane rating ...................327, 342
quality ......................................327
running out of fuel .................327
safety information relating to
automotive fuels .....................323
Fuses ..................................268–269
G
Gas cap (see Fuel cap) ............325
Gas mileage
(see Fuel economy) .................328
Gauges .........................................17
H
Hazard flashers .........................266Headlamps ...................................72
aiming ........................................74
autolamp system .......................72
bulb specifications ....................77
daytime running lights .............73
flash to pass ..............................73
high beam .................................73
turning on and off ....................72
Homelink wireless control
system ........................................102
Hood ..........................................309
I
Ignition ...............................232, 342
Illuminated visor mirror .............85
Infant seats
(see Safety seats) .....................184
Inspection/maintenance (I/M)
testing ........................................333
Instrument panel
cleaning ...................................304
cluster ........................................12
J
Jack ............................................275
positioning ...............................275
storage .....................................275
Jump-starting your vehicle ......284
K
Keyless entry system ...............137
autolock ...................................124
keypad .....................................137
locking and unlocking doors ..138
programming entry code .......137
Keys ...................................138–140
positions of the ignition .........232
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Index
349

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