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2. Unlock the locking clip on the
connector (connector shown from
below for clarity), then squeeze and
pull the connector off of the air
outlet tube.
3. Clean the area around the air
tube to air cover connection to
prevent debris from entering the
system and then loosen the bolt on
the air tube clamp so the clamp is
no longer snug to the air tube. It is
not necessary to completely remove
the clamp.
4. Pull the air tube off from the air
cleaner housing.
5. Release the three clamps that
secure the cover to the air filter
housing. Push the air filter cover
toward the center of the vehicle and
up slightly to release it.
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Owners Guide, 1st Printing
USA(fus)
Maintenance and Specifications
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6. Remove the air filter element
from the air filter housing.
7. Install a new air filter element.
8. Replace the air filter housing
cover and secure the clamps. Be
careful not to crimp the filter
element edges between the air filter
housing and cover and ensure that
the tabs on the edge are properly
aligned into the slots.
9. Slip the air tube onto the air filter
housing and tighten the air-tube
clamp bolt snugly, but do not
overtighten it.
10. Reconnect the mass air flow
sensor electrical connector to the
outlet tube. Make sure the locking
tab on the connector is in the
“locked” position (connector shown
from below for clarity).
2009 Navigator(nav)
Owners Guide, 1st Printing
USA(fus)
Maintenance and Specifications
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Page 369 of 375

Vehicle security systems
Wheel locks
For maximum vehicle performance, keep the following information in
mind when adding accessories or equipment to your vehicle:
•When adding accessories, equipment, passengers and luggage to your
vehicle, do not exceed the total weight capacity of the vehicle or of
the front or rear axle (GVWR or GAWR as indicated on the Safety
Compliance Certification label). Consult your authorized dealer for
specific weight information.
•The Federal Communications Commission (FCC) and Canadian Radio
Telecommunications Commission (CRTC) regulate the use of mobile
communications systems — such as two-way radios, telephones and
theft alarms - that are equipped with radio transmitters. Any such
equipment installed in your vehicle should comply with FCC or CRTC
regulations and should be installed only by a qualified service
technician.
•Mobile communications systems may harm the operation of your
vehicle, particularly if they are not properly designed for automotive
use.
•To avoid interference with other vehicle functions, such as anti-lock
braking systems, amateur radio users who install radios and antennas
onto their vehicle should not locate the Amateur Radio Antennas in
the area of the driver’s side hood.
•Electrical or electronic accessories or components that are added to
the vehicle by the authorized dealer or the owner may adversely affect
battery performance and durability.
2009 Navigator(nav)
Owners Guide, 1st Printing
USA(fus)
Accessories
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Power door locks ......................133
Power liftgate ............................123
Power mirrors .............................98
Power point .................................92
Power steering ..................263–264
fluid, checking and adding ....357
fluid, refill capacity ................362
fluid, specifications .................362
Power Windows ...........................94
Preparing to drive your
vehicle ........................................265
R
Radio ............................................20
Rear seat entertainment
system ..........................................37
Recommendations for
attaching safety restraints for
children ......................................196
Relays ........................................288
Remote entry system .......137–138
illuminated entry ............142–143
locking/unlocking
doors ................................138–139
opening the trunk ...................139
panic alarm .............................140
replacement/additional
transmitters .............................142
replacing the batteries ...........141
Reverse camera .........................273
Roadside assistance ..................285
Roll stability control .................259
Roof rack ...................................129
S
Safety Belt Maintenance ..........211Safety belts (see Safety
restraints) ..........171, 173–176, 178
Safety Canopy ...................188, 190
Safety defects, reporting ..........320
Safety restraints ........171, 173–178
Belt-Minder...........................180
extension assembly ................179
for adults .........................174–176
for children .............................194
safety belt maintenance .........211
warning light and
chime ...............................179–180
Safety restraints - LATCH
anchors ......................................201
Safety seats for children ..........198
Safety Compliance
Certification Label ....................366
Satellite Radio Information ........34
Seats ..........................................152
child safety seats ....................198
climate control ........................159
heated ......................................167
memory seat ...................140, 157
SecuriLock passive anti-theft
system ........................................146
Servicing your vehicle ..............328
Snowplowing .................................8
Spark plugs,
specifications .....................361, 365
Special notice
utility-type vehicles ....................8
Specification chart,
lubricants ...................................362
Speed control ............................101
Stability system .........................259
Starting a flex fuel vehicle .......253
Index
374