EXCEPTIONS
There are several exceptions to the Normal Schedule. They are listed
below:
Normal vehicle axle maintenance:Rear axles and power take-off
(PTO) units with synthetic fluid and light-duty trucks equipped with
Ford-design axles are lubricated for life; do not check or change fluid
unless a leak is suspected, service is required or the assembly has been
submerged in water. During long periods of trailer towing with outside
temperatures above 70°F (21°C) and at wide-open throttle for long
periods above 45 mph (72 km/h), non-synthetic rear axle fluids should
be changed every 3,000 miles (4,800 km) or three months, whichever
comes first. This interval can be waived if the axle is filled with 75W140
synthetic gear fluid meeting Ford specification WSL-M2C192-A, part
number F1TZ-19580-B or equivalent. Add friction modifier XL-3
(EST-M2C118-A) or equivalent for complete refill of Traction-Lok rear
axles (refer toMaintenance product specifications and capacitiesin
theMaintenance and Specificationschapter for details).
Police/Taxi/Livery vehicle axle maintenance:Change rear axle fluid
every 100,000 miles (160,000 km). Rear axle fluid change may be waived
if the axle was filled with 75W140 synthetic gear fluid meeting Ford
specification WSL-M2C192-A, part number FITZ-19580-B or equivalent.
Add four ounces (118 mL) of additive friction modifier XL-3
(EST-M2C118-A) or equivalent for complete refill of Traction-Lok rear
axles. The axle fluid should be changed anytime the axle has been
submerged in water.
E–450 and F–450/550 axle maintenance:Change rear axle fluid every
100,000 miles (160,000 km) under normal driving conditions. For
vehicles operated at or near maximum Gross Vehicle Weights, the rear
axle fluid should be changed every 50,000 miles (80,000 km). In
addition, this 50,000 mile (80,000 km) schedule should be observed
when the vehicles are operated under the Special Operating Conditions.
California fuel filter replacement:If the vehicle is registered in
California, the California Air Resources Board has determined that the
failure to perform this maintenance item will not nullify the emission
warranty or limit recall liability prior to the completion of the vehicle’s
useful life. Ford Motor Company, however, urges you to have all
recommended maintenance services performed at the specified intervals
and to record all vehicle service.
Scheduled Maintenance
373
2012 Navigator(nav)
Owners Guide, 1st Printing
USA(fus)
Starting a flex fuel vehicle .......226
Starting your
vehicle ........................223–224, 226
jump starting ..........................285
Steering wheel
controls ......................................82
tilting .........................................67
SYNC..........................................47
T
Third-row power fold seat .......141
Tire Pressure Monitoring
System (TPMS)
Driving .....................................258
Tires, Wheels and Loading ....203
Warning Displays ................12, 25
Tires ...........................188–189, 275
alignment ................................197
care ..........................................192
changing ..........................275, 279
checking the pressure ............192
inflating ...................................190
label .........................................202
replacing ..................................194
rotating ....................................197
safety practices .......................196
sidewall information ...............198
snow tires and chains ............207
spare tire .................................275
terminology .............................189
tire grades ...............................189
treadwear ........................188, 193
Towing .......................................215
recreational towing .................222
trailer towing ..........................215
wrecker ....................................289Transmission .............................242
brake-shift interlock (BSI) ....241
fluid, checking and adding
(automatic) .............................336
fluid, refill capacities ..............342
lubricant specifications ..........342
Turn signal ..................................58
U
Universal garage door opener ....84
USB port ......................................39
V
Vehicle Identification Number
(VIN) ..........................................347
Vehicle loading ..........................208
Ventilating your vehicle ...........227
W
Warning lights (see Lights) .......12
Washer fluid ..............................309
Water, Driving through .............263
Windows
power .........................................73
rear wiper/washer .....................66
Windshield washer fluid and
wipers ..........................................65
checking and adding fluid .....309
liftgate reservoir .....................309
replacing wiper blades ...........310
Wrecker towing .........................289
Index
381
2012 Navigator(nav)
Owners Guide, 1st Printing
USA(fus)
