Protecting Your Investment
Maintenance is an investment that will pay dividends in the form of
improved reliability, durability and resale value. To maintain the proper
performance of your vehicle and its emission control systems, it is
imperative that scheduled maintenance be completed at the designated
intervals.
Your vehicle is equipped with the Intelligent Oil-Life Monitor (IOLM)
system which displays a message in the information display at the proper
oil change service interval; this interval may be up to one year or
10000 miles (16000 kilometers). When ENGINE OIL CHANGE DUE or
OIL CHANGE REQUIRED appears in the information display, it is time
for an oil change; the oil change must be done within two weeks or
500 miles (800 kilometers) of the ENGINE OIL CHANGE DUE or OIL
CHANGE REQUIRED message appearing. The Intelligent Oil-Life Monitor
must be reset after each oil change; see theInformation Displays
chapter.
If your information display is prematurely reset or becomes inoperative,
you should perform the oil change interval at six months or 5000 miles
(8000 kilometers) from your last oil change. Never exceed one year or
10000 miles (16000 kilometers) between oil change intervals.
Your vehicle is very sophisticated and built with multiple, complex,
performance systems. Every manufacturer develops these systems using
different specifications and performance features. That is why it is
important to rely upon your dealership to properly diagnose and repair
your vehicle.
Ford Motor Company has recommended maintenance intervals for
various parts and component systems based upon engineering testing.
Ford Motor Company relies upon this testing to determine the most
appropriate mileage for replacement of oils and fluids to protect your
vehicle at the lowest overall cost to you and recommends against
maintenance schedules that deviate from the scheduled maintenance
information.
Ford strongly recommends the use of only genuine Ford, Motorcraft or
Ford-authorized remanufactured replacement parts because they are
engineered for your vehicle.
Additives and Chemicals
Ford Motor Company recommended additives and chemicals are listed in
the owner manual and in the Ford Workshop Manual. Additional
chemicals or additives not approved by Ford Motor Company are not
recommended as part of normal maintenance. Please consult your
warranty information.
Scheduled Maintenance 451
2015 Navigator(nav)
Owners Guide gf, 2nd Printing, December 2014
USA (fus)
Normal scheduled maintenance*
At every oil change
interval as indicated by
the information displayChange engine oil and filter.**
Rotate tires, inspect tire wear and measure
tread depth.
Perform multi-point inspection
(recommended).
Inspect automatic transmission fluid level (if
equipped with dipstick). Consult dealer for
requirements.
Inspect brake pads, shoes, rotors, drums,
brake linings, hoses and parking brake.
Inspect engine cooling system strength and
hoses.
Inspect exhaust system and heat shields.
Inspect front axle and U-joints. Lubricate if
equipped with grease fittings (Four–wheel
drive vehicles).
Inspect half-shaft boots (if equipped).
Inspect steering linkage, ball joints,
suspension, tie-rod ends, driveshaft and
U-joints. Lubricate if equipped with grease
fittings.
Inspect wheels and related components for
abnormal noise, wear, looseness or drag.
*Do not exceed one year or 10000 miles (16000 kilometers) between
service intervals.
**Reset your Intelligent Oil-Life Monitor after each engine oil and filter
change. See the Instrument Cluster chapter.
456Scheduled Maintenance
2015 Navigator (nav)
Owners Guide gf, 2nd Printing, December 2014
USA (fus)
