Avoid excessive speed because vehicle momentum can work against you
and cause the vehicle to become stuck to the point that assistance may
be required from another vehicle. Remember, you may be able to back
out the way you came if you proceed with caution.
If your vehicle is equipped with AdvanceTracwith RSC, press the
AdvanceTracwith RSC button (refer toAdvanceTracwith Roll
Stability Control (RSC) Stability Enhancement Systemin this
chapter) while driving in deep sand if you experience excessive engine
power reduction.
Mud and water
If you must drive through high
water, drive slowly. Traction or
brake capability may be limited.
When driving through water,
determine the depth; avoid water
higher than the bottom of the hubs
(if possible) and proceed slowly. If
the ignition system gets wet, the
vehicle may stall.
Once through water, always try the brakes. Wet brakes do not stop the
vehicle as effectively as dry brakes. Drying can be improved by moving
your vehicle slowly while applying light pressure on the brake pedal.
Be cautious of sudden changes in vehicle speed or direction when you
are driving in mud. Even four–wheel drive vehicles can lose traction in
slick mud. As when you are driving over sand, apply the accelerator
slowly and avoid spinning your wheels. If the vehicle does slide, steer in
the direction of the slide until you regain control of the vehicle.
If the transmission, transfer case, front axle or rear axle are submerged
in water, their fluids should be checked and changed, if necessary.
Driving through deep water may damage the transmission.
If the front or rear axle is submerged in water, the axle lubricant should
be replaced.
After driving through mud, clean off residue stuck to rotating driveshafts
and tires. Excess mud stuck on tires and rotating driveshafts causes an
imbalance that could damage drive components.
2007 Navigator(nav)
Owners Guide (post-2002-fmt)
USA(fus)
Driving
217
Descend a hill in the same gear you
would use to climb up the hill to
avoid excessive brake application
and brake overheating. Do not
descend in neutral; instead,
disengage overdrive or manually
shift to a lower gear. When
descending a steep hill, avoid
sudden hard braking as you could
lose control. When you brake hard,
the front wheels can’t turn and if
they aren’t turning, you won’t be
able to steer. The front wheels have to be turning in order to steer the
vehicle. Rapid pumping of the brake pedal will help you slow the vehicle
and still maintain steering control.
If your vehicle has anti-lock brakes, apply the brakes steadily. Do not
“pump” the brakes.
Driving on snow and ice
Four–wheel drive vehicles have advantages over two–wheel drive
vehicles in snow and ice but can skid like any other vehicle.
Should you start to slide while driving on snowy or icy roads, turn the
steering wheel in the direction of the slide until you regain control.
Avoid sudden applications of power and quick changes of direction on
snow and ice. Apply the accelerator slowly and steadily when starting
from a full stop.
Avoid sudden braking as well. Although a four–wheel drive vehicle may
accelerate better than a two-wheel drive vehicle in snow and ice, it won’t
stop any faster, because as in other vehicles, braking occurs at all four
wheels. Do not become overconfident as to road conditions.
Make sure you allow sufficient distance between you and other vehicles
for stopping. Drive slower than usual and consider using one of the lower
gears. In emergency stopping situations, apply the brake forcefully and
steadily. Do not “pump” the brakes. Refer to theBrakessection of this
chapter for additional information on the operation of the anti-lock brake
system.
2007 Navigator(nav)
Owners Guide (post-2002-fmt)
USA(fus)
Driving
219
Fuse/Relay
LocationFuse Amp
RatingPassenger Compartment Fuse
Panel Description
23 15A High beam headlamps
24 20A Horn relay
25 10A Demand lamps
26 10A Instrument panel cluster
27 20A Ignition switch
28 5A Radio
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 Ebrake
34 5A Not used (spare)
35 10A Rear park assist, 4x4
36 5A PATS transceiver
37 10A Climate control
38 20A
Subwoofer/Amp (Audiophile radio)
39 20A Radio
40 20A Instrument panel amp, DSP,
Radio, 4x4 module
41 15A Radio
42 10A Upfitter relay coil, Trailer tow,
Battery charge coil
43 10A Rear wiper logic
44 10A Customer access feed
45 5A Front wiper logic
46 7.5A Not used (Spare)
47 30A Circuit
BreakerPower windows, Moon roof
48 — Delayed accessory relay
Note:Relays R301–R305 are not serviceable components; see your
authorized dealer for assistance.
2007 Navigator(nav)
Owners Guide (post-2002-fmt)
USA(fus)
Roadside Emergencies
227
Tire change procedure
To help prevent the vehicle from moving when you change a tire,
be sure the parking brake is set, then block the wheels (both
front or both rear) on the opposite end of the vehicle from the wheel
being changed. If on a grade, block both opposite wheels on the
downward side of the hill.
If the vehicle slips off the jack, you or someone else could be
seriously injured.
On vehicles equipped with Air Suspension, turn OFF the Air
Suspension system prior to jacking, hoisting or towing your
vehicle.
If your vehicle is equipped with air suspension, refer toMessage center
in theDriver Controlschapter for instructions on turning the air
suspension system off.
Refer to the instruction sheet (located in the rear floor compartment
behind the 3rd row seat with the jack tray tools assembly kit) for
detailed tire change instructions.
1. Park on a level surface, activate
hazard flashers and set the parking
brake.
2007 Navigator(nav)
Owners Guide (post-2002-fmt)
USA(fus)
Roadside Emergencies
236
When one of the rear wheels is off the ground, the transmission
alone will not prevent the vehicle from moving or slipping off the
jack, even if the transmission is in P (Park). To prevent the vehicle
from moving when you change the tire, be sure that the parking brake
is set and the block the wheels (both front or both rear) on the
opposite end of the vehicle from the wheel being changed. If on a
grade, block both opposite wheels on the downward side of the hill. If
the vehicle slips off the jack, someone could be seriously injured.
•Front
•Rear
Turn off the running boards (if equipped) before jacking or
placing any object under the vehicle. Never place your hand
between the extended running board and the vehicle. A moving
running board may cause injury.
2007 Navigator(nav)
Owners Guide (post-2002-fmt)
USA(fus)
Roadside Emergencies
238
A
ABS (see Brakes) .....................196
Accessory delay ..........................57
AdvanceTrac ..............................199
Air cleaner filter ...............293, 296
Air suspension ...........................204
description ..............................204
Airbag supplemental restraint
system ........................133, 137, 139
and child safety seats ............135
description ..............133, 137, 139
disposal ....................................142
driver airbag ............135, 138, 140
indicator light .................137, 142
operation .................135, 138, 140
passenger airbag .....135, 138, 140
side airbag ...............................137
Antifreeze
(see Engine coolant) ................275
Anti-lock brake system
(see Brakes) ......................196–197
Anti-theft system
arming the system ..................103
Audio system (see Radio) .........18
Automatic transmission
driving an automatic
overdrive .................................207
fluid, adding ............................293
fluid, checking ........................293
fluid, refill capacities ..............297
fluid, specification ..................297
Auxiliary Input Jack ...................24
Auxiliary power point .................54
Axle
lubricant specifications ..........297
refill capacities ........................297
B
Battery .......................................273acid, treating emergencies .....273
jumping a disabled battery ....241
maintenance-free ....................273
replacement, specifications ...296
servicing ..................................273
BeltMinder...............................129
Brakes ........................................196
anti-lock ...........................196–197
anti-lock brake system (ABS)
warning light ...........................197
fluid, checking and adding ....292
fluid, refill capacities ..............297
fluid, specifications .................297
lubricant specifications ..........297
parking ....................................198
shift interlock ..........................205
Bulbs ............................................44
C
Capacities for refilling fluids ....297
Cargo management system ........87
Cell phone use ..............................7
Changing a tire .........................232
Child safety restraints ..............143
child safety belts ....................143
Child safety seats ......................146
in front seat ............................148
in rear seat ......................148, 150
Cleaning your vehicle
engine compartment ..............260
instrument panel ....................261
interior .....................................262
interior trim ............................262
plastic parts ............................260
safety belts ..............................262
washing ....................................258
waxing .....................................259
wheels ......................................259
2007 Navigator(nav)
Owners Guide (post-2002-fmt)
USA(fus)
Index
305