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2. Leave the engine running until the
coolant temperature gauge needle
returns to the normal position. If the
temperature does not drop after several
minutes, follow the remaining steps.
3. Switch the engine off and wait for it to
cool. Check the coolant level.
4. If the coolant level is at or below the
minimum mark, add prediluted coolant
immediately.
5. If the coolant level is normal, restart the
engine and continue.
ENGINE AIR FILTER
CHANGING THE ENGINE AIR FILTER
WARNING: To reduce the risk of
vehicle damage and personal burn injuries,
do not start your engine with the air
cleaner removed and do not remove it
while the engine is running.
Change the engine air filter element at the
proper intervals. See Normal Scheduled
Maintenance (page 533).
When changing the engine air filter, use only
the air filter element listed. See Motorcraft
Parts (page 468).
Note: Failure to use the correct air filter
element may result in severe engine
damage. Resulting component damage may
not be covered by the vehicle Warranty.
Note: When servicing the air cleaner, do not
allow foreign material to enter the air
induction system.
E248801
1. Release the two clamps that secure the
cover to the air filter housing. Push the
air filter cover toward the front of the
vehicle and up slightly to release it.
2. Remove the air filter element from the air
filter housing.
3. Install the new air filter element.
E248800
4. Replace the air filter housing cover and
secure all the clamps. Be careful not to
crimp the filter element edges between
the air filter housing and cover, and make
sure that you properly align the tabs on
the edge into the slots.
423
2023 Navigator (TB9) Canada/United States of America, enUSA, Edition date: 202207, DOM
Maintenance
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