Page 461 of 532

Make sure to change your vehicle
’s oils and
fluids at the specified intervals or in
conjunction with a repair. Flushing is a viable
way to change fluid for many vehicle
sub-systems during scheduled maintenance. It is critical that systems are flushed only with
new fluid that is the same as that required
to fill and operate the system or using a
Ford-approved flushing chemical.
Owner Checks and Services
Make sure you perform the following basic
maintenance checks and inspections every
month or at six-month intervals. Check every month
Engine oil level.
Function of all interior and exterior lights.
Tires (including spare) for wear and proper pressure. Windshield washer fluid level. Check every six months
Battery connections. Clean if necessary.
Body and door drain holes for obstructions. Clean if necessary. Cooling system fluid level and coolant strength.
Door weatherstrips for wear. Lubricate if necessary.
Hinges, latches and outside locks for proper operation. Lubricate if necessary. Parking brake for proper operation.
458
Navigator (TB5) Canada/United States of America, enUSA, First Printing Scheduled Maintenance
Page 463 of 532

Multi-Point inspection
Steering and linkage
Exterior lamps operation
Tires (including spare) for wear and proper pressure**
Fluid levels *
; fill if necessary
Windshield for cracks, chips or pits
For oil and fluid leaks
Washer spray and wiper operation
Half-shaft dust boots
* Brake, coolant recovery reservoir, automatic transmission and window washer
** If your vehicle is equipped with a temporary mobility kit, check the tir\
e sealant expiration Use By date on the canister. Replace as needed.
Be sure to ask your dealership service
advisor or technician about the multi-point
vehicle inspection. It is a comprehensive way
to perform a thorough inspection of your
vehicle. Your checklist gives you immediate
feedback on the overall condition of your
vehicle. NORMAL SCHEDULED
MAINTENANCE
Intelligent Oil-Life Monitor
Your vehicle is equipped with an Intelligent
Oil-Life Monitor that determines when you
should change the engine oil based on how
your vehicle is used. By using several
important factors in its calculations, the
monitor helps reduce the cost of owning your
vehicle and reduces environmental waste at
the same time.This means you do not have to remember to
change the oil on a mileage-based schedule.
Your vehicle lets you know when an oil
change is due by displaying a message in
the information display.
The following table provides examples of
vehicle use and its impact on oil change
intervals. It is a guideline only. Actual oil
change intervals depend on several factors
and generally decrease with severity of use.
460
Navigator (TB5) Canada/United States of America, enUSA, First Printing Scheduled Maintenance
Page 465 of 532

Normal Maintenance Intervals
At every oil change interval as indicated by the information display
*
Change engine oil and filter. **
Rotate tires, inspect tire wear and measure tread depth.
Perform a multi-point inspection (recommended).
Inspect the automatic transmission fluid level (if equipped with dipsti\
ck). Consult your dealer for requirements.
Inspect the brake pads, rotors, hoses and parking brake.
Inspect the engine cooling system strength and hoses.
Inspect the exhaust system and heat shields.
Inspect front axle and U-joints.
Inspect the half-shaft boots.
Inspect the steering linkage, ball joints, suspension, tire-rod ends, driveshaft and U-joints.
Inspect the wheels and related components for abnormal noise, wear, looseness or drag.
* Do not exceed one year or 10000 miles (16000 kilometers) between service interv\
als.
** Reset the Intelligent Oil-Life Monitor after engine oil and filter change\
s.
462
Navigator (TB5) Canada/United States of America, enUSA, First Printing Scheduled Maintenance
Page 469 of 532

Off-road operation
Inspect steering linkage, ball joints and U-joints. Lubricate if equipped with grease fittings.
Inspect frequently, service
as required
Replace engine air filter.
Change engine oil and filter.*
Every 5,000 mi (8,000 km)
or six months
Inspect the wheels and related components for abnormal noise, wear, looseness or drag.
Rotate tires, inspect tires for wear and measure tread depth.
Replace front wheel bearing grease and grease seals if non-sealed bearing\
s are used (Two-wheel drive
vehicles).
Every
30,000 mi
(48,000 km)
Change transfer case fluid (Four-wheel drive vehicles).
Every
60,000 mi
(96,000 km)
* Reset your Intelligent Oil-Life Monitor after each engine oil and filter \
change.
Exceptions
There are several exceptions to the Normal
Schedule. Axle and Transfer Case Maintenance
Axle(s) and transfer case (four-wheel drive
vehicles) fluid changes or level checks are
not required unless a leak is suspected or
the assembly has been submerged in water.
During long periods of trailer towing with
outside temperatures above 70°F (21°C) or
at wide-open throttle for long periods above45 mph (72 km/h), change the rear axle fluid
every 30,000 mi (48,000 km) or three
months, whichever comes first, if the rear
axle is filled with non-synthetic fluid. This
interval can be waived and the 150,000 mi
(240,000km) service interval can continue if
466
Navigator (TB5) Canada/United States of America, enUSA, First Printing Scheduled Maintenance
Page 532 of 532

Engine Oil...............................................................99
Fasten Seatbelt.....................................................99
Front Airbag...........................................................99
High Beam..............................................................99
Hill Descent............................................................99
Liftgate Ajar............................................................99
Low Fuel Level......................................................99
Low Tire Pressure Warning................................99
Low Washer Fluid................................................100
Parking Lamps.....................................................100
Powertrain Fault..................................................100
Service Engine Soon..........................................100
Stability Control System....................................100
Stability Control System Off.............................100
Transmission Tow/Haul.......................................101
Washer Fluid Check.....................................274
Washers See: Cleaning the Exterior...............................286
See: Wipers and Washers....................................
81
Waxing............................................................288
Welcome Lighting
...........................................88
Wheel Nuts See: Changing a Road Wheel..........................319
Wheels and Tires.........................................295 General Information...........................................295
Technical Specifications...................................326
Windows and Mirrors.....................................90
Windshield Washers
......................................82 Windshield Wipers
...........................................81
Speed Dependent Wipers...................................81
Wiper Blades See: Checking the Wiper Blades....................277
Wipers and Washers.......................................81
529
Navigator (TB5) Canada/United States of America, enUSA, First Printing Index