
Engine Coolant Temperature
Management (If Equipped)
WARNING
To reduce the risk of crash and injury,
be prepared that the vehicle speed
may reduce and the vehicle may not be able
to accelerate with full power until the coolant
temperature reduces. If you tow a trailer with your vehicle, the
engine may temporarily reach higher a
temperature during severe operating
conditions, for example ascending a long or
steep grade in high ambient temperatures.
At this time, you may notice the coolant
temperature gauge moves toward the red
zone and a message may appear in the
information display.
You may notice a reduction in vehicle speed
caused by reduced engine power. In order
to manage the engine coolant temperature.
Your vehicle may enter this mode if certain
high-temperature and high-load conditions
take place. The amount of speed reduction
depends on vehicle loading, grade and
ambient temperature. If this occurs, there is
no need to pull off the road. You can
continue to drive your vehicle.
The air conditioning may automatically turn
on and off during severe operating
conditions to protect the engine from
overheating. When the coolant temperature
decreases to the normal operating
temperature, the air conditioning turns on.
If the coolant temperature gauge moves fully
into the red zone, or if the coolant
temperature warning or service engine soon
messages appear in your information display,
do the following:
1. Pull off the road as soon as safely
possible and shift the transmission into
park
(P). 2. Leave the engine running until the
coolant temperature gauge needle
returns to the normal position. After
several minutes, if the temperature does
not drop, 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.
AUTOMATIC TRANSMISSION
FLUID CHECK
If required, have an authorized dealer check
and change the transmission fluid at the
correct service interval.
See Scheduled
Maintenance (page 456).
The automatic transmission does not have
a transmission fluid dipstick.
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Navigator (TB5) Canada/United States of America, enUSA, First Printing Maintenance

Cooling system
•
Protect against freezing temperatures.
• When removing your vehicle from
storage, check coolant fluid level.
Confirm that there are no cooling system
leaks and that fluid is at the
recommended level.
Battery
• Check and recharge as necessary. Keep
connections clean.
• If storing your vehicle for more than 30
days without recharging the battery, we
recommend that you disconnect the
battery cables to maintain battery charge
for quick starting.
Note: It is necessary to reset memory
features if battery cables are disconnected.
Brakes
• Make sure the brakes and parking brake
release fully.
Tires
• Maintain recommended air pressure. Miscellaneous
•
Make sure all linkages, cables, levers and
pins under your vehicle are covered with
grease to prevent rust.
• Move vehicles at least 25 ft (7.5 m) every
15 days to lubricate working parts and
prevent corrosion.
Removing Vehicle From Storage
When your vehicle is ready to come out of
storage, do the following:
• Wash your vehicle to remove any dirt or
grease film build-up on window surfaces.
• Check windshield wipers for any
deterioration.
• Check under the hood for any foreign
material that may have collected during
storage such as mice or squirrel nests.
• Check the exhaust for any foreign
material that may have collected during
storage.
• Check tire pressures and set tire inflation
per the Tire Label. •
Check brake pedal operation. Drive your
vehicle 15 ft (4.5 m) back and forth to
remove rust build-up.
• Check fluid levels (including coolant, oil
and gas) to make sure there are no leaks,
and fluids are at recommended levels.
• If you remove the battery, clean the
battery cable ends and check for
damage.
Contact an authorized dealer if you have any
concerns or issues.
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Navigator (TB5) Canada/United States of America, enUSA, First Printing Vehicle Care

Cruise control
See: Using Cruise Control................................199
Customer Assistance
..................................238
D
Data Recording
..................................................9
Event Data Recording...........................................10
Service Data Recording.........................................9
Daytime Running Lamps...............................86 Type 1 - Conventional
(Non-Configurable)...........................................87
Type 2 - Configurable..........................................87
Direction Indicators
........................................88
Lane Change..........................................................88
Doors and Locks..............................................61
Drive Control
.................................................207
Driver Select Suspension.................................207
Driver and Passenger Airbags....................43 Children and Airbags...........................................44
Proper Driver and Front Passenger Seating
Adjustment.........................................................43
Driving Aids
....................................................201
Driving Hints..................................................228
Driving Through Water...............................229
DRL See: Daytime Running Lamps...........................86 E
Economical Driving
......................................228
Emission Control System............................166
On-Board Diagnostics (OBD-II)........................167
Readiness for Inspection and Maintenance
(I/M) Testing......................................................168
End User License Agreement...................488 VEHICLE SOFTWARE END USER LICENSE
AGREEMENT (EULA) ....................................488
Engine Block Heater
.....................................157
Using the Engine Block Heater.......................158
Engine Coolant Check................................268 Adding Coolant...................................................268
Coolant Change..................................................270
Engine Coolant Temperature
Management...................................................272
Fail-Safe Cooling................................................270
Recycled Coolant...............................................270
Severe Climates..................................................270
Engine Immobilizer See: Passive Anti-Theft System
........................70
Engine Oil Check.........................................266 Adding Engine Oil..............................................266
Engine Oil Dipstick......................................266
Engine Specifications..................................328 Drivebelt Routing................................................328 Entertainment................................................378
AM/FM Radio.......................................................380
Apps........................................................................\
391
Bluetooth Stereo or USB..................................389
CD (If equipped)..................................................388
HD Radio ™ Information (If Available)..............
384
SIRIUS® Satellite Radio (If Activated).............380
Sources.................................................................379
Supported Media Players, Formats and Metadata Information....................................
391
USB Ports..............................................................391
Environment......................................................15
Essential Towing Checks...........................220 Before Towing a Trailer.....................................225
Hitches...................................................................221
Launching or Retrieving a Boat or Personal
Watercraft (PWC)............................................226
Safety Chains......................................................224
Trailer Brakes.......................................................224
Trailer Hitch Cover.............................................220
Trailer Lamps.......................................................224
Trailer Towing Connector (Vehicles with a Trailer Towing Package and 7–Pin
Connector).......................................................220
When Towing a Trailer......................................225
Event Data Recording See: Data Recording..............................................9
Export Unique Options...................................14
521
Navigator (TB5) Canada/United States of America, enUSA, First Printing Index

U
Under Hood Overview................................264
Universal Garage Door Opener................145
HomeLink Wireless Control System...............145
USB Port..........................................................347
Using Cruise Control....................................199
Switching Cruise Control Off..........................200
Switching Cruise Control On and Off............199
Using Four-Wheel Drive
...............................174
4WD Indicator Lights..........................................174
4WD Switch Positions.........................................174
Driving Off-Road With Truck and Utility
Vehicles.............................................................176
How Your Vehicle Differs From Other Vehicles.............................................................176
Using Hill Descent Control..........................191 Principle of Operation.........................................
191
Using Hill Descent Control................................191
Using MyKey With Remote Start Systems..........................................................59
Using Power Running Boards......................72 Automatic Power Deploy....................................72
Automatic Power Stow........................................72
Bounce-back..........................................................73
Enabling and Disabling........................................72
Manual Power Deploy.........................................72
Using Snow Chains.......................................312 Using Stability Control.................................188
Stability Control and Traction Control with Roll
Stability Control™ (RSC™)................................188
Using Traction Control.................................185 Switching the System Off .................................185
System Indicator Lights and Messages.........
185
Using Voice Recognition............................367 Audio Voice Commands...................................369
Climate Voice Commands................................370
Mobile App Voice Commands.........................374
Navigation Voice Commands..........................373
Phone Voice Commands...................................371
SiriusXM Traffic and Travel Link Voice
Commands.......................................................375
Voice Settings Commands...............................376
Utilizing the Mediation/Arbitration Program (Canada Only)
..............................................241
V
Vehicle Care
..................................................285
General Information...........................................285
Vehicle Certification Label
.........................330
Vehicle Identification Number..................330
Vehicle Storage............................................293
Battery...................................................................294
Body.......................................................................293
Brakes...................................................................294 Cooling system...................................................294
Engine...................................................................293
Fuel system..........................................................293
General.................................................................293
Miscellaneous.....................................................294
Removing Vehicle From Storage...................294
Tires.......................................................................294
Ventilation See: Climate Control..........................................122
VIN See: Vehicle Identification Number...............330
Voice Control
...................................................78
Type One.................................................................78
Type Two.................................................................79
W
Warning Lamps and Indicators
....................98
4X2........................................................................\
...101
4X4 Auto.................................................................101
4X4 HIGH...............................................................101
Anti-Lock Braking System..................................98
Battery.....................................................................98
Brake System.........................................................98
Cruise Control........................................................98
Direction Indicator................................................98
Door Ajar.................................................................99
Engine Coolant Temperature............................99
528
Navigator (TB5) Canada/United States of America, enUSA, First Printing Index