Page 273 of 381
Fuse/Relay
LocationFuse Amp
RatingProtected Circuits
32 40A** Blower motor relay
33 40A** 110V AC power point
34 30A** Auxiliary blower motor
35 30A** PCM relay
36 30A** Power liftgate
37 — TT left hand stop/turn relay
38 — TT right hand stop/turn relay
39 — Backup lamps relay
40 — Electronic fan 2 relay
41 10A* PCM keep-alive power
42 — Not used
43 5A* Brake on/off switch
44 20A* Fuel pump relay
45 25A* TT stop/turn lamps relay
46 — Not used
47 — Not used
48 30A** RAS module
49 — Not used
50 30A** Front wiper motor relay
51 40A** Rear window defroster/heated
mirror relay
52 10A* Anti-lock brake system (ABS)
R/S feed
53 10A* RAS module
54 — Not used
55 5A* Fuel pump relay coil R/S feed
56 30A* Passenger compartment fuse
panel R/S feed
57 10A* Blower motor relay coil
58 15A* TT backup lamps
59 15A* Heated mirrors
Roadside Emergencies
273
2012 Navigator(nav)
Owners Guide, 1st Printing
USA(fus)
Page 274 of 381
Fuse/Relay
LocationFuse Amp
RatingProtected Circuits
60 — Not used
61 — Fuel pump diode
62 — Left HID headlamp relay
63 25A** Electronic fan
64 30A** Moon roof
65 20A** Auxiliary power point
(instrument panel)
66 20A** Auxiliary power point (rear of
center console)
67 40A** Front row climate controlled
seats
68 60A** ABS valves
69 60A** ABS pump
70 30A** Third row power fold seat
71 20A** Auxiliary power point/cigar
lighter
72 20A** Auxiliary power point (right rear
quarter panel)
73 — Not used
74 30A** Driver power seat
75 20A* Vehicle power1–PCM
76 20A* Vehicle power2–PCM
77 15A* Vehicle power4–ignition coils
78 — Not used
79 20A* Vehicle power3–PCM
80 — Not used
81 — Not used
82 — Not used
83 — Not used
84 — Not used
85 — Wiper motor relay
* Mini Fuses ** Cartridge Fuses
Roadside Emergencies
274
2012 Navigator(nav)
Owners Guide, 1st Printing
USA(fus)
Page 275 of 381

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. During repairing or replacing of the flat tire, have
the authorized dealer inspect the TPMS sensor for damage.
WARNING:The use of tire sealants may damage your tire
pressure monitoring system (TPMS) and should not be used.
However, if you must use a sealant, the TPMS sensor and valve stem
on the wheel must be replaced by an authorized Ford dealer.
WARNING: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
WARNING: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.
A dissimilar spare tire/wheel is defined as a spare tire and/or wheel that
is different in brand, size or appearance from the road tires and wheels
and can be one of three types:
1.T-type mini-spare:This spare tire begins with the letter “T” for tire
size and may have “Temporary Use Only” molded in the sidewall
Roadside Emergencies
275
2012 Navigator(nav)
Owners Guide, 1st Printing
USA(fus)
Page 276 of 381

2.Full-size dissimilar spare with label on wheel:This spare tire has
a label on the wheel that states: “THIS TIRE AND WHEEL FOR
TEMPORARY USE ONLY”
When driving with one of the dissimilar spare tires listed above,do not:
•Exceed 50 mph (80 km/h)
•Load the vehicle beyond maximum vehicle load rating listed on the
Safety Compliance Label
•Tow a trailer
•Use snow chains on the end of the vehicle with the dissimilar spare
tire
•Use more than one dissimilar spare tire at a time
•Use commercial car washing equipment
•Try to repair the dissimilar spare tire
Use of one of the dissimilar spare tires listed above at any one wheel
location can lead to impairment of the following:
•Handling, stability and braking performance
•Comfort and noise
•Ground clearance and parking at curbs
•Winter weather driving capability
•Wet weather driving capability
•All-wheel driving capability (if applicable)
3.Full-size dissimilar spare without label on wheel
When driving with the full-size dissimilar spare tire/wheel,do not:
•Exceed 70 mph (113 km/h)
•Use more than one dissimilar spare tire/wheel at a time
•Use commercial car washing equipment
•Use snow chains on the end of the vehicle with the dissimilar spare
tire/wheel
The usage of a full-size dissimilar spare tire/wheel can lead to
impairment of the following:
•Handling, stability and braking performance
•Comfort and noise
•Ground clearance and parking at curbs
Roadside Emergencies
276
2012 Navigator(nav)
Owners Guide, 1st Printing
USA(fus)
Page 277 of 381

•Winter weather driving capability
•Wet weather driving capability
•All-wheel driving capability (if applicable)
•Load leveling adjustment (if applicable)
When driving with the full-size dissimilar spare tire/wheel additional
caution should be given to:
•Towing a trailer
•Driving vehicles equipped with a camper body
•Driving vehicles with a load on the cargo rack
Drive cautiously when using a full-size dissimilar spare tire/wheel and
seek service as soon as possible.
Stopping and securing the vehicle
1. Park on a level surface, activate
the hazard flashers and set the
parking brake.
2. Place the gearshift in P (Park)
and turn the engine off.
Location of the spare tire and tools
The spare tire and tools for your vehicle are stowed in the following
locations:
Item Location
Spare tire Under the vehicle, just forward of
the rear bumper
Jack tools Under the access panel located in
the floor compartment behind the
rear seat
Roadside Emergencies
277
2012 Navigator(nav)
Owners Guide, 1st Printing
USA(fus)
Page 278 of 381

Removing the jack and tools
1. Open the liftgate, then locate the
access panel on the floor behind the
3rd row seat. Unlatch and remove
the panel.
2. Remove the jack and tools
assembly tray from the
compartment by turning the
wing-nut counterclockwise to relieve
tension against the jack assembly
tray. Remove the bag from the jack
and tool assembly tray by loosening
the strap.
Note:Pay close attention to the orientation of the bag, because it will
have to be reinstalled after changing the tire.
3. Unsnap the wheel lug nut wrench, jack extension and handle from the
plastic tray. Remove the jack and instruction sheet from the tray
assembly.
Removing the spare tire
1. Remove the jack handle and
winch extension from the tray and
assemble them.
2. Open the spare tire winch access
plug in the bottom of the
compartment for the jack and tools
tray.
3. Insert the winch extension tool
assembly through the access hole in
the floor and engage the winch.
4. To remove the spare tire, turn the
handle counterclockwise until the
tire is lowered to the ground and
the cable is slightly slack.
5. Slide the retainer through the center of the spare tire wheel.
Roadside Emergencies
278
2012 Navigator(nav)
Owners Guide, 1st Printing
USA(fus)
Page 279 of 381

Tire change procedure
WARNING: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.
WARNING:If the vehicle slips off the jack, you or someone else
could be seriously injured.
WARNING:On vehicles equipped with air suspension, turn off
the air suspension system prior to jacking, hoisting or towing
your vehicle.
WARNING: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.
WARNING:Do not attempt to change a tire on the side of the
vehicle close to moving traffic. Pull far enough off the road to
avoid the danger of being hit when operating the jack and changing the
wheel.
Note:Passengers should not remain in the vehicle when the vehicle is
being jacked.
If your vehicle is equipped with air suspension, refer toMessage center
in theInstrument Clusterchapter 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.
Roadside Emergencies
279
2012 Navigator(nav)
Owners Guide, 1st Printing
USA(fus)
Page 280 of 381

1. 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
wheels on the downward side of the
hill.
2. Turn off the air suspension system. The air suspension system is
controlled through the message center. Refer toAir suspension system
in theDrivingsection for more information. Also, turn off the
deployable running boards (if equipped). Refer toMessage centerin the
Instrument Clustersection.
3. Obtain the spare tire and jack from their storage locations.
4. Use the tip of the jack handle to
remove any wheel trim. Loosen each
wheel lug nut one-half turn
counterclockwise but do not remove
them until the wheel is raised off
the ground.
5. Position the jack according to the
jack locator arrows found on the
frame and turn the jack handle and
extension tool assembly clockwise.
Note:Use the frame rail as the
jacking point, NOT the control arm.
6. Lift the vehicle so the tire is no
further than 1 inch (2.5 cm) off the
ground when installing the spare tire.
Roadside Emergencies
280
2012 Navigator(nav)
Owners Guide, 1st Printing
USA(fus)