2017 DODGE DURANGO cooling

Exhaust Gas
WARNING!
Exhaust gases can injure or kill. They contain carbon
monoxide (CO), which is colorless and odorless.
Breathing it can make you unconscious and can even-
tually poison you. To avoid breathing (CO), follow
these safety tips:
•Do not run the engine in a closed garage or in
confined areas any longer than needed to move your
vehicle in or out of the area.
• If you are required to drive with the trunk/liftgate/
rear doors open, make sure that all windows are
closed and the climate control BLOWER switch is set
at high speed. DO NOT use the recirculation mode.
• If it is necessary to sit in a parked vehicle with the
engine running, adjust your heating or cooling con-
trols to force outside air into the vehicle. Set the
blower at high speed.
The best protection against carbon monoxide entry into the
vehicle body is a properly maintained engine exhaust
system. Whenever a change is noticed in the sound of the exhaust
system, when exhaust fumes can be detected inside the
vehicle, or when the underside or rear of the vehicle is
damaged, have a competent mechanic inspect the complete
exhaust system and adjacent body areas for broken, dam-
aged, deteriorated, or mispositioned parts. Open seams or
loose connections could permit exhaust fumes to seep into
the passenger compartment. In addition, inspect the ex-
haust system each time the vehicle is raised for lubrication
or oil change. Replace as required.
Safety Checks You Should Make Inside The Vehicle
Seat Belts
Inspect the seat belt system periodically, checking for cuts,
frays, and loose parts. Damaged parts must be replaced
immediately. Do not disassemble or modify the system.
Front seat belt assemblies must be replaced after a collision.
Rear seat belt assemblies must be replaced after a collision
if they have been damaged (i.e., bent retractor, torn web-
bing, etc.). If there is any question regarding seat belt or
retractor condition, replace the seat belt.
2
THINGS TO KNOW BEFORE STARTING YOUR VEHICLE 85

1. Tachometer•Indicates the engine speed in revolutions per minute
(RPM x 1000).
2. Speedometer •Indicates vehicle speed.
3. Temperature Gauge •
The temperature gauge shows engine coolant tempera-
ture. Any reading within the normal range indicates that
the engine cooling system is operating satisfactorily.
• The gauge pointer will likely indicate a higher tem-
perature when driving in hot weather, up mountain
grades, or when towing a trailer. It should not be
allowed to exceed the upper limits of the normal
operating range.
CAUTION!
Driving with a hot engine cooling system could damage
your vehicle. If the temperature gauge reads “H” pull over
and stop the vehicle. Idle the vehicle with the air condi-
tioner turned off until the pointer drops back into the
normal range. If the pointer remains on the “H”, turn the
engine off immediately and call an authorized dealer for
service.
WARNING!
A hot engine cooling system is dangerous. You or
others could be badly burned by steam or boiling
coolant. You may want to call an authorized dealer for
service if your vehicle overheats. If you decide to look
under the hood yourself, see “Maintaining Your Ve-
hicle”. Follow the warnings under the Cooling System
Pressure Cap paragraph.
4. Fuel Gauge •The pointer shows the level of fuel in the fuel tank
when the Keyless Push Button Ignition is in the
ON/RUN position.
•
The fuel pump symbol points to the side of the
vehicle where the fuel door is located.
5. Instrument Cluster Display
•The Instrument Cluster Display features a driver-
interactive display. Refer to “Instrument Cluster Dis-
play” in “Understanding Your Instrument Panel” for
further information.
236 UNDERSTANDING YOUR INSTRUMENT PANEL

IconDescription
Rear Temperature Control
The rear blower control can be manually set to off, or any fixed blower speed by pushing the
blower control buttons. This allows the rear seat occupants to control the volume of air circulated
in the rear of the vehicle. Please refer to the warning at the end of this section.
CAUTION!
Interior air enters the Rear Automatic Temperature
Control System through an intake grille, located in
floor under the passengers’ seats. Do not block or place
objects directly in front of the inlet grille or heater
outlets. The electrical system could overload causing
damage to the blower motor.
Climate Control Functions
A/C (Air Conditioning)
The Air Conditioning (A/C) button allows the operator to
manually activate or deactivate the air conditioning sys-
tem. When the air conditioning system is turned on, cool
dehumidified air will flow through the outlets into the
cabin. For improved fuel economy, press the A/C button to
turn off the air conditioning and manually adjust the
blower and airflow mode settings. Also, make sure to select
only Panel, Bi-Level or Floor modes. NOTE:
•
If fog or mist appears on the windshield or side glass, select
Defrost mode and increase blower speed if needed.
• If your air conditioning performance seems lower than
expected, check the front of the A/C condenser (located
in front of the radiator), for an accumulation of dirt or
insects. Clean with a gentle water spray from the front of
the radiator and through the condenser.
MAX A/C
MAX A/C sets the control for maximum cooling performance.
Press and release to toggle between MAX A/C and the prior
settings. The button illuminates when MAX A/C is ON.
In MAX A/C, the blower level and mode position can be
adjusted to desired user settings. Pressing other settings will
cause the MAX A/C operation to switch to the selected setting
and MAX A/C to exit.
4
UNDERSTANDING YOUR INSTRUMENT PANEL 345

Recirculation
When outside air contains smoke, odors, or high humidity, or
if rapid cooling is desired, you may wish to recirculate interior
air by pressing the Recirculation control button. The recircu-
lation indicator will illuminate when this button is selected.
Press the button a second time to turn off the Recirculation
mode and allow outside air into the vehicle.
NOTE:In cold weather, use of recirculation mode may lead to
excessive window fogging. The recirculation feature may be
unavailable (button on the touchscreen greyed out) if condi-
tions exist that could create fogging on the inside of the
windshield. On systems with Manual Climate Controls, the
Recirculation mode is not allowed in Defrost mode to improve
window clearing operation. Recirculation will be disabled
automatically if this mode is selected. Attempting to use
Recirculation while in this mode will cause the LED in the
control button to blink and then turn off.
Automatic Temperature Control (ATC) —
If Equipped
Automatic Operation
1. Push the AUTO button on the front ATC Panel and the
word “AUTO” will illuminate in the front ATC display, along with two temperatures for the driver and front
passenger. The system will then automatically regulate
the amount of airflow.
2. Adjust the temperature you would like the system to maintain, by adjusting the driver, passenger, and rear
temperatures. Once the desired temperature is dis-
played, the system will achieve and automatically main-
tain that comfort level.
3. When the system is set up for your comfort level, it is not necessary to change the settings. You will experience
the greatest efficiency by simply allowing the system to
function automatically.
NOTE:
• It is not necessary to move the temperature settings. The
system automatically adjusts the temperature, mode and
fan speed to provide comfort as quickly as possible.
To provide you with maximum comfort in the automatic
mode, during cold start-ups, the blower fan will remain on
low until the engine warms up. The fan will engage
immediately if the Defrost mode is selected, or by changing
the front blower knob setting.
346 UNDERSTANDING YOUR INSTRUMENT PANEL

Rear Temperature Control
To change the temperature in the rear of the vehicle, push
the temperature buttons. The rear temperature settings are
displayed in the rear ATC panel.
When rear controls are locked by the front system, the Rear
Temperature Lock symbol on the ATC panel is illuminated
and any rear overhead adjustments are ignored.
When the Sync feature is active, the rear temperature is
synchronized to the driver ’s temperature setting. If the rear
temperature is changed, the Sync feature will deactivate.
Operating Tips
NOTE:Refer to the chart at the end of this section for
suggested control settings for various weather conditions.
Summer Operation
The engine cooling system must be protected with a
high-quality antifreeze coolant to provide proper corrosion
protection and to protect against engine overheating. A
solution of 50% OAT (Organic Additive Technology) cool-
ant that meets the requirements of FCA Material Standard
MS.90032 and 50% water is recommended. Refer to “Main-
tenance Procedures” in “Maintaining Your Vehicle” for
proper coolant selection.
Winter Operation
Use of the air Recirculation mode during winter months is
not recommended because it may cause window fogging.
Vacation Storage
Any time you store your vehicle or keep it out of service
(i.e., vacation) for two weeks or more, run the air condi-
tioning system at idle for about five minutes in the fresh air
and high blower setting. This will ensure adequate system
lubrication to minimize the possibility of compressor dam-
age when the system is started again.
Window Fogging
Interior fogging on the windshield can be quickly removed
by turning the mode selector to Defrost. The Defrost/Floor
mode can be used to maintain a clear windshield and
provide sufficient heating. If side window fogging be-
comes a problem increase blower speed. Vehicle windows
tend to fog on the inside in mild but rainy or humid
weather.
NOTE: Recirculate without A/C should not be used for
long periods, as fogging may occur.
350 UNDERSTANDING YOUR INSTRUMENT PANEL

Automatic Mode
The Stop/Start feature is enabled after every
normal customer engine start. At that time, the
system will go into STOP/START READY and if
all other conditions are met, can go into a STOP/
START AUTOSTOP ACTIVE “Autostop” mode.
To Activate The Autostop Mode, The Following Must Occur:
• The system must be in STOP/START READY state. A
STOP/START READY message will be displayed in the
instrument cluster display within the Stop/Start section.
Refer to “Instrument Cluster” in “Understanding Your
Instrument Panel” for further information.
• The vehicle must be completely stopped.
• The shifter must be in a forward gear and the brake
pedal depressed.
The engine will shut down, the tachometer will move to
the zero position and the Stop/Start telltale will illuminate
indicating you are in Autostop. Customer settings will be
maintained upon return to an engine running condition.
Possible Reasons The Engine Does Not Autostop
Prior to engine shut down, the system will check many
safety and comfort conditions to see if they are fulfilled.
Detailed information about the operation of the Stop/Start
system may be viewed in the instrument cluster display
Stop/Start Screen. In the following situations, the engine
will not stop:
• Driver ’s seat belt is not buckled.
• Driver ’s door is not closed.
• Battery temperature is too warm or cold.
• Battery charge is low.
• The vehicle is on a steep grade.
• Cabin heating or cooling is in process and an acceptable
cabin temperature has not been achieved.
• HVAC is set to full defrost mode at a high blower speed.
• HVAC set to MAX A/C.
• Engine has not reached normal operating temperature.
• The transmission is not in a forward gear.
• Hood is open.
5
STARTING AND OPERATING 383

Trailer Towing Weights (Maximum Trailer Weight Ratings)
EngineModelGCWR (Gross
Combined Wt. Rating) Frontal Area Max. GTW
(Gross Trailer Wt.) Max. Trailer
Tongue Wt. (See Note)
3.6L RWD Light Duty Cooling 8,900 lbs
(4,037 kg) 40 sq ft
(3.72 sq m) 3,500 lbs
(1,588 kg) 350 lbs (159 kg)
3.6L RWD11,600 lbs
(5,262 kg) 40 sq ft
(3.72 sq m) 6,200 lbs
(2,812 kg) 620 lbs (281 kg)
3.6L AWD Light Duty Cooling 8,900 lbs
(4,037 kg) 40 sq ft
(3.72 sq m) 3,500 lbs
(1,588 kg) 350 lbs (159 kg)
3.6L AWD11,600 lbs
(5,262 kg) 40 sq ft
(3.72 sq m) 6,200 lbs
(2,812 kg) 620 lbs (281 kg)
5.7L RWD13,100 lbs
(5,942 kg) 60 sq ft
(5.57 sq m) 7,400 lbs
(3,357 kg) 740 lbs (336 kg)
5.7L AWD13,100 lbs
(5,942 kg) 60 sq ft
(5.57 sq m) 7,200 lbs
(3,266 kg) 720 lbs (327 kg)
Refer to local laws for maximum trailer towing speeds.
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STARTING AND OPERATING 457

Towing Tips
Before setting out on a trip, practice turning, stopping and
backing the trailer up in an area away from heavy traffic.
Automatic Transmission
The DRIVE range can be selected when towing. The
transmission controls include a drive strategy to avoid
frequent shifting when towing. However, if frequent shift-
ing does occur while in DRIVE, you can use the AutoStick
shift control to manually select a lower gear.
NOTE:Using a lower gear while operating the vehicle
under heavy loading conditions, will improve performance
and extend transmission life by reducing excessive shifting
and heat buildup. This action will also provide better
engine braking.
AutoStick
• When using the AutoStick shift control, select the high-
est gear that allows for adequate performance and
avoids frequent downshifts. For example, choose “5” if
the desired speed can be maintained. Choose “4” or “3”
if needed to maintain the desired speed.
• To prevent excess heat generation, avoid continuous
driving at high RPM. Reduce vehicle speed as necessary to avoid extended driving at high RPM. Return to a
higher gear or vehicle speed when grade and road
conditions allow.
Electronic Speed Control — If Equipped
•
Do not use in hilly terrain or with heavy loads.
• When using the speed control, if you experience speed
drops greater than 10 mph (16 km/h), disengage until
you can get back to cruising speed.
• Use speed control in flat terrain and with light loads to
maximize fuel efficiency.
Cooling System
To reduce potential for engine and transmission overheat-
ing, take the following actions:
City Driving
When stopped for short periods of time, shift the transmis-
sion into NEUTRAL and increase engine idle speed.
Highway Driving
Reduce speed.
Air Conditioning
Turn off temporarily.
464 STARTING AND OPERATING