Maintenance 275
General information...................................275
Opening and closing the hood............................276
Under hood overview..................................277
Engine oil dipstick....................................278
Engine oil check......................................278
Engine coolant check..................................279
Automatic transmission fluid check........................283
Brake fluid check.....................................284
Fuel filter...........................................284
Washer fluid check....................................285
Battery ............................................285
Checking the wiper blades..............................286
Changing the wiper blades..............................287
Air filter(s).........................................288
Adjusting the headlamps................................291
Changing a bulb......................................292
Removing a headlamp..................................293
Vehicle Care 298
Cleaning products.....................................298
Cleaning the exterior..................................298
Waxing.............................................300
Repairing minor paint damage............................300
Cleaning the engine...................................300
Cleaning the windows and wiper blades.....................301
Cleaning the interior...................................301
Cleaning the instrument panel and instrument cluster lens.......302
Cleaning leather seats..................................303
Cleaning the alloy wheels...............................303
Vehicle storage.......................................304
6Table of Contents
2013 Navigator(nav)
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USA(fus)
Charging System
It will illuminate when the 12–volt battery is not charging
properly. Contact your authorized dealer as soon as possible.
This indicates a problem with the electrical system or a related
component.
Check 4X4
Displays with the message CHECK 4X4 when a four-wheel drive
fault is present. Refer to theInformation Displayschapter for
more information.
Cruise Control
It will illuminate when you switch this feature on.
Direction Indicator
Illuminates when the left or right turn signal or the hazard
warning flasher is switched on. If the indicators stay on or flash
faster, check for a burned out bulb.
Door Ajar
Displays when the ignition is on and any door is not completely
closed.
Engine Oil
If it illuminates with the engine running or when you are
driving, this indicates a malfunction. Stop your vehicle as soon
as it is safe to do so and switch the engine off. Check the
engine oil level.
Note:Do not resume your journey if it illuminates despite the level
being correct. Have the system checked by your authorized dealer.
Engine Coolant Temperature
Illuminates when the engine coolant temperature is high. Stop
the vehicle as soon as possible, switch off the engine and let
cool.
100Instrument Cluster
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Service Engine Soon
Theservice engine soonindicator light illuminates when the
ignition is first turned to the on position to check the bulb and
to indicate whether the vehicle is ready for
Inspection/Maintenance (I/M) testing. Normally, the “service engine soon”
light will stay on until the engine is cranked, then turn itself off if no
malfunctions are present. However, if after 15 seconds the “service
engine soon” light blinks eight times, it means that the vehicle is not
ready for I/M testing. See theReadiness for inspection/maintenance
(I/M) testingin theFuel and Refuelingchapter.
Solid illumination after the engine is started indicates the on-board
diagnostics system (OBD-II) has detected a malfunction. Refer to
On-board diagnostics (OBD-II)in theFuel and Refuelingchapter. If
the light is blinking, engine misfire is occurring which could damage your
catalytic converter. Drive in a moderate fashion (avoid heavy acceleration
and deceleration) and have your vehicle serviced immediately by your
authorized dealer.
WARNING:Under engine misfire conditions, excessive exhaust
temperatures could damage the catalytic converter, the fuel
system, interior floor coverings or other vehicle components, possibly
causing a fire.
Stability Control System
Displays when the AdvanceTrac/Traction control is active. If
the light remains on, have the system serviced immediately.
Stability Control System Off
Illuminates when AdvanceTrac/Traction control has been
disabled by the driver.
Transmission Tow/Haul
Illuminates when the Tow/Haul feature has been activated.
Refer to theTransmissionchapter for transmission function
and operation. If the light flashes steadily, have the system
serviced immediately, damage to the transmission could occur.
102Instrument Cluster
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Readiness for Inspection/Maintenance (I/M) Testing
Some state/provincial and local governments may have
Inspection/Maintenance (I/M) programs to inspect the emission control
equipment on your vehicle. Failure to pass this inspection could prevent
you from getting a vehicle registration.
If the service engine soon indicator is on or the bulb does not
work, the vehicle may need to be serviced. Refer toOn-board
diagnostics (OBD-II)in this chapter.
Your vehicle may not pass the I/M test if the service engine soon
indicator is on or not working properly (bulb is burned out), or if the
OBD-II system has determined that some of the emission control systems
have not been properly checked. In this case, the vehicle is considered
not ready for I/M testing.
If the vehicle’s engine or transmission has just been serviced, or the
battery has recently run down or been replaced, the OBD-II system may
indicate that the vehicle is not ready for I/M testing. To determine if the
vehicle is ready for I/M testing, turn the ignition key to the on position
for 15 seconds without cranking the engine. If the service engine soon
indicator blinks eight times, it means that the vehicle is not ready for I/M
testing; if the service engine soon indicator stays on solid, it means that
the vehicle is ready for I/M testing.
The OBD-II system is designed to check the emission control system
during normal driving. A complete check may take several days. If the
vehicle is not ready for I/M testing, the following driving cycle consisting
of mixed city and highway driving may be performed:
15 minutes of steady driving on an expressway/highway followed by
20 minutes of stop-and-go driving with at least four 30-second idle
periods.
Allow the vehicle to sit for at least eight hours without starting the
engine. Then, start the engine and complete the above driving cycle. The
engine must warm up to its normal operating temperature. Once started,
do not turn off the engine until the above driving cycle is complete. If
the vehicle is still not ready for I/M testing, the above driving cycle will
have to be repeated.
Fuel and Refueling199
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5. Locate the vertical adjuster on
each headlamp, then use a Phillips
#2 screwdriver to turn the adjuster
either counterclockwise or
clockwise in order to adjust the
vertical aim of the headlamp. The
upper edge of the light pattern
should touch the horizontal
reference line.
6. HORIZONTAL AIM IS NOT REQUIRED FOR THIS VEHICLE AND IS
NOT ADJUSTABLE.
7. Repeat Steps 3–5 for the other headlamp.
8. Close the hood and turn off the lamps.
CHANGING A BULB
Lamp Assembly Condensation
Exterior lamps are vented to accommodate normal changes in pressure.
Condensation can be a natural by-product of this design. When moist air
enters the lamp assembly through the vents, there is a possibility that
condensation can occur when the temperature is cold. When normal
condensation occurs, a thin film of mist can form on the interior of the
lens. The thin mist eventually clears and exits through the vents during
normal operation. Clearing time may take as long as 48 hours under dry
weather conditions.
These are examples of acceptable condensation:
•Presence of thin mist (no streaks, drip marks or droplets).
•Fine mist covers less than 50% of the lens.
These are examples of unacceptable moisture (usually caused by a lamp
water leak):
•Water puddle inside the lamp.
•Large water droplets, drip marks or streaks present on the interior of
the lens.
Take your vehicle to a dealer for service if any of the above conditions of
unacceptable moisture are present.
292Maintenance
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Replacing HID Headlamp Bulbs
The low/high beam headlamps on your vehicle use a “high intensity
discharge” source. These lamps operate at a high voltage. For bulb
replacement, see your authorized dealer.
Replacing Front Parking Lamp, Turn Signal, and Side Marker Bulbs
The front parking lamp, turn signal, and side marker bulbs are located in
the headlamp assembly. Follow the same steps to replace any of these
bulbs.
1. Make sure the headlamp control is in the off position.
2. Open the hood.
3. At the back of the headlamp lens,
remove the two headlamp assembly
bolts.
4. Pull the headlamp assembly
forward slightly to expose the
electrical connectors.
5. Rotate the bulb socket
counterclockwise and remove it.
6. Pull the bulb straight out of the
socket and push in the new bulb.
7. To complete installation of the
parking lamp/turn signal assembly,
follow the removal procedures in
reverse order.
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Replacing Fog Lamp Bulbs
1. From underneath the vehicle,
rotate the harness/bulb assembly
counterclockwise to remove it from
the fog lamp assembly.
2. Carefully disconnect the bulb
from the harness assembly via the
two snap clips.
Install the new bulb in reverse
order.
Replacing Tail, Stop, Turn Signal, and Backup Lamp Bulbs
The tail, stop, turn signal, and backup lamp bulbs are located in the
same portion of the tail lamp assembly, one just below the other. Follow
the same steps to replace any of these bulbs.
1. Make sure the headlamp switch is
in the off position.
2. Open the liftgate to expose the
lamp assembly screws.
3. Remove the two screws from the
lamp assembly.
4. Carefully pry the lamp assembly
away from the vehicle by pulling the
assembly directly straight out to
expose the bulb socket. DO NOT
TIP THE LAMP ASSEMBLY SIDEWAYS.
5. Rotate the bulb socket counterclockwise and remove from lamp
assembly.
6. Pull bulb straight out of the socket and push in the new bulb.
7. Install the bulb socket into the lamp assembly and rotate clockwise.
8. Install the lamp assembly on the vehicle and secure with two screws.
294Maintenance
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Replacing Supplemental Tail Lamp Bulbs
1. Make sure the headlamp switch is in the off position.
2. Open the liftgate and remove interior trim panel.
3. Remove four nuts from the lamp
assembly.
4. Carefully pry the lamp assembly
away from the vehicle by pulling the
assembly directly straight out to
expose the bulb socket. DO NOT
TIP THE LAMP ASSEMBLY
SIDEWAYS.
5. Rotate the bulb socket counterclockwise and remove from lamp
assembly.
6. Pull bulb straight out of socket and push in the new bulb.
7. Install the bulb socket into the lamp assembly and rotate clockwise.
8. Install the lamp assembly on the vehicle and secure with four nuts.
9. Install the interior trim panel.
Replacing License Plate Lamp Bulbs
The license plate bulbs are located in the license plate housing assembly
on the liftgate. To change the license plate bulbs:
1. Make sure the headlamp switch is
in the off position.
2. Remove the license lamp screw
from the assembly.
3. Pull the lamp down and twist the
bulb socket counterclockwise.
Remove the bulb socket from the
lamp.
4. Pull out the old bulb and push in
the new bulb.
5. Install the bulb socket in the lamp assembly by turning it clockwise.
6. Install the lamp assembly and secure it with the retaining screw.
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