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Trailer Lamps
Trailer lamps are required on most towed vehicles. Make sure all running
lights, brake lights, turn signals and hazard lights are working. Contact
your authorized dealer or trailer rental agency for proper instructions
and equipment for hooking up the lamps.
Before Towing a Trailer
Practice turning, stopping and backing up to get the feel of the
vehicle-trailer combination before starting on a trip. When turning, make
wider turns so the trailer wheels will clear curbs and other obstacles.
When Towing a Trailer
•Do not drive faster than 70 mph (113 km/h) during the first 500 miles
(800 kilometers).
•Do not make full-throttle starts.
•Check your hitch, electrical connections and trailer wheel lug nuts
thoroughly after you have traveled 50 miles (80 kilometers).
•When stopped in congested or heavy traffic during hot weather, place
gearshift in positionPto aid engine and transmission cooling and to
help A/C performance.
•Turn off the speed control with heavy loads or in hilly terrain. The
speed control may turn off automatically when you are towing on
long, steep grades.
•Shift to a lower gear when driving down a long or steep hill. Do not
apply the brakes continuously, as they may overheat and become less
effective.
•If your transmission is equipped with a Grade Assist or Tow/Haul
feature, use this feature when towing. This provides engine braking
and helps eliminate excessive transmission shifting for optimum fuel
economy and transmission cooling.
•If your vehicle is equipped with AdvanceTrac™ with RSC, you may
experience AdvanceTrac™ with RSC activations during typical
cornering maneuvers with a heavily loaded trailer; this is normal.
Cornering at a slower speed while towing reduces the tendency of the
AdvanceTrac™ stability enhancement system to activate.
•If you are towing a trailer frequently in hot weather, hilly conditions,
at GCWR (or any combination of these factors), consider refilling
your rear axle with synthetic gear lubricant, if not already so
equipped. See theCapacities and Specificationschapter for the
lubricant specification.
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USA(fus)
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CHANGING THE WIPER BLADES
Replace wiper blades at least once per year for optimum performance.
To replace the wiper blades:
1. Fold back the wiper arm and
position the wiper blade at a right
angle to the wiper arm.
2. To remove the wiper blade, press
the retaining clip (A) to disengage
the wiper blade, then pull the blade
down toward the windshield to
remove it from the arm.
3. Install the new wiper blade on the arm and press it into place until a
click is heard.
Poor wiper quality can be improved by cleaning the wiper blades and
windshield. Refer toWindows and wiper bladesin theCleaning
chapter.
To prolong the life of the wiper blades, it is highly recommended to
scrape off the ice on the windshield before turning on the wipers. The
layer of ice has many sharp edges and can damage the micro edge of the
wiper rubber element.
Changing the Rear Window Wiper Blade
To replace the rear wiper blade:
1. Pull the wiper arm as far away from the glass as possible. Do not use
excessive force because it can break the wiper arm. Hold it there until
the next step.
2. Grasp the wiper blade and rotate
it away from the wiper arm using
moderate force until it disengages
from the wiper arm.
3. Once the wiper blade is loose,
slide it away from the wiper arm.
A
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USA(fus)
Page 336 of 481
12. Raise the vehicle to provide sufficient ground clearance when
installing the spare tire; approximately 1/4 inch (6 mm).
•Front
•Rear
•Jack at the specified locations to avoid damage to the vehicle.
13. Remove the lug nuts with the lug wrench.
14. Replace the flat tire with the spare tire, making sure the valve stem
is facing outward.
15. Reinstall the lug nuts until the wheel is snug against the hub. Do not
fully tighten the lug nuts until the wheel has been lowered.
16. Lower the wheel by turning the jack handle counterclockwise.
336Wheels and Tires
2013 Navigator(nav)
Owners Guide gf, 1st Printing
USA(fus)
Page 448 of 481

SOUND
The sound menu allows you to access and adjust settings, such as Bass,
Treble, Fade, Balance, Speed Compensated Volume (SCV) and the
visualizer. Press the SOUND hard button.
When you select: You can:
Bass/TrebleIncrease or decrease levels by pressing + or -.
Balance/FadeAdjust the sound between the left and right
speakers (Balance) and front and rear
speakers (Fade).
SCVHave the system automatically adjust radio
volume according to vehicle speed to
compensate for road and wind noise. Select a
level of compensation between 1 and 7 by
pressing the corresponding button.
VisualizerTurn the audio visualizer display on or off.
Note:Turning the visualizer setting to off
does not remove the visualizer on the home
screen. You need to select a different view in
order to remove the visualizer.
NAVIGATION SYSTEM
Your navigation system allows you to set a destination by using your
touchscreen or voice commands.
The navigation system contains map coverage for the United States,
Puerto Rico and U.S. Virgin Islands, Canada and Mexico.
Disclaimer
A disclaimer appears once per ignition cycle when the DEST button is
pressed. Press Accept to agree to the terms and access navigation
functions. If you do not press Accept, you only have access to
non-navigation functions. The disclaimer has information similar to the
following:
•Always obey local traffic regulations.
•It is recommended to program the system only when stopped.
•Some functions are unavailable while the vehicle is in motion to help
minimize distraction.
•Periodic map updates are available at an additional cost.
448Navigation System (If Equipped)
2013 Navigator(nav)
Owners Guide gf, 1st Printing
USA(fus)