2020 DODGE DURANGO coolant temperature

GETTING TO KNOW YOUR VEHICLE69
AUTOMATIC TEMPERATURE CONTROL
(ATC)
Automatic Operation

1. Push the AUTO button on the front
Automatic Temperature Control (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 automat -
ically 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 displayed, the
system will achieve and automatically
maintain 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.
Manual Operation Override
This system offers a full complement of manual
override features. The AUTO symbol in the front
ATC display will be turned off when the system
is being used in the manual mode.
NOTE:
The system will not automatically sense the
presence of fog, mist or ice on the windshield.
Defrost mode must be manually selected to
clear the windshield and side glass.
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) coolant that
meets the requirements of FCA Material
Standard MS.90032 and 50% water is
recommended. Refer to “Fluids and Lubricants”
in “Technical Specifications” for proper coolant
selection.
Winter Operation
Use of the Air Recirculation mode during Winter
months is not recommended because it may
cause window fogging.
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96GETTING TO KNOW YOUR INSTRUMENT PANEL
INSTRUMENT CLUSTER DESCRIPTIONS

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 temperature. Any reading within
the normal range indicates that the
engine cooling system is operating satis -
factorily.
The pointer will likely indicate a higher
temperature 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. 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 “Instru -
ment Cluster Display” in this chapter for
further information.
NOTE:
The hard telltales will illuminate for a bulb check
when the ignition is first cycled.
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, refer to “Cooling System” in
“Servicing And Maintenance” and follow the
warnings under the Cooling System Pressure
Cap paragraph.
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
conditioner 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.

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98GETTING TO KNOW YOUR INSTRUMENT PANEL
SRT INSTRUMENT CLUSTER
D
ESCRIPTIONS

1. Speedometer

Indicates vehicle speed.
2. Tachometer
Indicates the engine speed in revolutions
per minute (RPM x 1000).
3. Temperature Gauge
The temperature gauge shows engine
coolant temperature. Any reading within
203°F - 230°F (95°C - 110°C) indicates
that the engine cooling system is oper -
ating satisfactorily.
The pointer will likely indicate a higher
temperature 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. 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 “Instru -
ment Cluster Display” in this chapter for
further information.
NOTE:
The hard telltales will illuminate for a bulb check
when the ignition is first cycled.
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, refer to “Cooling System” in
“Service and Maintenance” and follow the
warnings under the Cooling System Pressure
Cap paragraph.
CAUTION!
Driving with a hot engine cooling system
could damage your vehicle. If the
temperature gauge reads greater than 230°F
(110°C) pull over and stop the vehicle. Idle
the vehicle with the air conditioner turned off
until the pointer drops back into the normal
range. If the pointer remains above 230°F
(110°C), turn the engine off immediately and
call an authorized dealer for service.

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104GETTING TO KNOW YOUR INSTRUMENT PANEL
Tire Pressure Monitor System
If tire pressure is OK for all tires a vehicle icon
is displayed with tire pressure values in each
corner of the icon.
If one or more tires have low pressure,
“Inflate Tire To XX” is displayed with the
vehicle icon and the tire pressure values in
each corner of the icon with the pressure
value of the low tire are displayed in a
different color than the other tire pressure
value.
If the Tire Pressure system requires service,
“Service Tire Pressure System” is displayed.
Tire Pressure is an information only function,
and cannot be reset.
Refer to “Tire Pressure Monitoring System
(TPMS)” in “Safety” for further information.
Coolant Temperature — If Equipped
Displays the current temperature of the
coolant.
Transmission Temperature
Displays the actual transmission tempera -
ture. Oil Temperature
Displays the actual oil temperature.
Oil Pressure
Displays the actual oil pressure.
Oil Life
Displays the current oil life of the vehicle.
Battery Voltage
Displays the current voltage level of the
battery.
Storage Mode — If Equipped
Through this option, the vehicle can be
placed into Storage Mode.
SRT Performance Features — If Equipped
Push and release the up or down arrow button
until the SRT icon/title is highlighted in the
instrument cluster display. Push and release
the left or right arrow button to scroll through
the performance feature submenus. The Performance Features include the
following:0-60 mph (0-100 km/h) Timer
Best
Last
Recent
Reaction Time — If Selected
WARNING!
Measurement of vehicle statistics with the
Performance Features is intended for
off-highway or track use only and should not
be done on any public roadways. It is
recommended that these features be used in
a controlled environment and within the limits
of the law. The capabilities of the vehicle as
measured by the performance pages must
never be exploited in a reckless or dangerous
manner, which can jeopardize the user’s
safety or the safety of others. Only a safe,
attentive, and skillful driver can prevent
accidents.

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112GETTING TO KNOW YOUR INSTRUMENT PANEL
If the light continues to flash when the vehicle is
running, immediate service is required and you
may experience reduced performance, an
elevated/rough idle, or engine stall and your
vehicle may require towing. The light will come
on when the ignition is placed in the ON/RUN or
ACC/ON/RUN position and remain on briefly as
a bulb check. If the light does not come on
during starting, have the system checked by an
authorized dealer.
Engine Coolant Temperature Warning
Light
This warning light warns of an
overheated engine condition. If the
engine coolant temperature is too
high, this indicator will illuminate and
a single chime will sound. If the temperature
reaches the upper limit, a continuous chime will
sound for four minutes or until the engine is
able to cool, whichever comes first.
If the light turns on while driving, safely pull over
and stop the vehicle. If the Air Conditioning
(A/C) system is on, turn it off. Also, shift the
transmission into NEUTRAL (N) and idle the
vehicle. If the temperature reading does not
return to normal, turn the engine off
immediately and call for service. Refer to “If Your Engine Overheats” in “In Case
Of Emergency” for further information.
Hood Open Warning Light
This warning light will illuminate when
the hood is left open and not fully
closed.
NOTE:
If the vehicle is moving, there will also be a
single chime.
Liftgate Open Warning Light
This warning light will illuminate when
the liftgate is open.
NOTE:
If the vehicle is moving, there will also be a
single chime.
Oil Pressure Warning Light
This warning light will illuminate to
indicate low engine oil pressure. If the
light turns on while driving, stop the
vehicle, shut off the engine as soon as
possible, and contact an authorized dealer. A
chime will sound when this light turns on. Do not operate the vehicle until the cause is
corrected. This light does not indicate how
much oil is in the engine. The engine oil level
must be checked under the hood.
Oil Temperature Warning Light
This warning light will illuminate to
indicate the engine oil temperature is
high. If the light turns on while driving,
stop the vehicle and shut off the
engine as soon as possible. Wait for oil
temperature to return to normal levels.
Trailer Brake Disconnected Warning Light
This warning light will illuminate when
the Trailer Brake has been
disconnected. Refer to “Towing
Requirements — Trailer Brakes” in
“Starting And Operating” for further
information.

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IN CASE OF EMERGENCY287
IF YOUR ENGINE OVERHEATS
In any of the following situations, you can
reduce the potential for overheating by taking
the appropriate action.
On the highways — slow down.
In city traffic — while stopped, place the trans -
mission in NEUTRAL (N), but do not increase
the engine idle speed while preventing
vehicle motion with the brakes.
NOTE:
There are steps that you can take to slow down
an impending overheat condition:
If your Air Conditioner (A/C) is on, turn it off.
The A/C system adds heat to the engine
cooling system and turning the A/C off can
help remove this heat.
You can also turn the temperature control to
maximum heat, the mode control to floor and
the blower control to high. This allows the
heater core to act as a supplement to the
radiator and aids in removing heat from the
engine cooling system.
MANUAL PARK RELEASE
To move the vehicle in cases where the
transmission will not shift out of PARK (P) (such
as a depleted battery), a Manual Park Release
is available.
WARNING!
You or others can be badly burned by hot
engine coolant (antifreeze) or steam from
your radiator. If you see or hear steam coming
from under the hood, do not open the hood
until the radiator has had time to cool. Never
try to open a cooling system pressure cap
when the radiator or coolant bottle is hot.
CAUTION!
Driving with a hot cooling system could
damage your vehicle. If the temperature
gauge reads HOT (H), pull over and stop the
vehicle. Idle the vehicle with the air
conditioner turned off until the pointer drops
back into the normal range. If the pointer
remains on HOT (H), and you hear continuous
chimes, turn the engine off immediately and
call for service.
WARNING!
Always secure your vehicle by fully applying
the parking brake before activating the
Manual Park Release. In addition, you should
be seated in the driver’s seat with your foot
firmly on the brake pedal when activating the
Manual Park Release. Activating the Manual
Park Release will allow your vehicle to roll
away if it is not secured by the parking brake,
or by proper connection to a tow vehicle.
Activating the Manual Park Release on an
unsecured vehicle could lead to serious injury
or death for those in or around the vehicle.
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294
SERVICING AND MAINTENANCE
SCHEDULED SERVICING — NON-SRT
Your vehicle is equipped with an automatic oil
change indicator system. The oil change
indicator system will remind you that it is time to
take your vehicle in for scheduled maintenance.
Based on engine operation conditions, the oil
change indicator message will illuminate. This
means that service is required for your vehicle.
Operating conditions such as frequent
short-trips, trailer tow, extremely hot or cold
ambient temperatures, and E85 fuel usage will
influence when the “Oil Change Required”
message is displayed. Severe Operating
Conditions can cause the change oil message
to illuminate as early as 3,500 miles
(5,600 km) since last reset. Have your vehicle
serviced as soon as possible, within the next
500 miles (805 km).An authorized dealer will reset the oil change
indicator message after completing the
scheduled oil change.
NOTE:
Under no circumstances should oil change
intervals exceed 10,000 miles (16,000 km),
12 months or 350 hours of engine run time,
whichever comes first. The 350 hours of engine
run or idle time is generally only a concern for
fleet customers.
Severe Duty All Models
Change Engine Oil at 4,000 miles (6,500 km) or
350 hours of engine run time if the vehicle is
operated in a dusty and off road environment or
is operated predominately at idle or only very
low engine RPM. This type of vehicle use is
considered Severe Duty.
Once A Month Or Before A Long Trip:Check engine oil level
Check windshield washer fluid level
Check the tire inflation pressures and look
for unusual wear or damage
Check the fluid levels of the coolant reservoir,
brake master cylinder and fill as needed.
Check function of all interior and exterior
lights
MAINTENANCE PLAN — NON-SRT
Required Maintenance
Refer to the Maintenance Plans on the following
pages for required maintenance.

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SERVICING AND MAINTENANCE321
In unusual situations involving grossly
malfunctioning engine operation, a scorching
odor may suggest severe and abnormal catalyst
overheating. If this occurs, stop the vehicle, turn
off the engine and allow it to cool. Service,
including a tune-up to manufacturer's
specifications, should be obtained immediately.
To minimize the possibility of catalytic converter
damage:
Do not interrupt the ignition when the trans -
mission is in gear and the vehicle is in
motion.
Do not try to start the vehicle by pushing or
towing the vehicle.
Do not idle the engine with any ignition
components disconnected or removed, such
as when diagnostic testing, or for prolonged
periods during very rough idle or malfunc -
tioning operating conditions.
COOLING SYSTEMEngine Coolant Checks
Check the engine coolant (antifreeze)
protection every 12 months (before the onset of
freezing weather, where applicable). If the
engine coolant (antifreeze) is dirty, the system
should be drained, flushed, and refilled with
fresh OAT coolant (conforming to MS.90032) by
an authorized dealer. Check the front of the
A/C condenser for any accumulation of bugs,
leaves, etc. If dirty, clean by gently spraying
water from a garden hose vertically down the
face of the condenser.
Check the engine cooling system hoses for
brittle rubber, cracking, tears, cuts, and
tightness of the connection at the coolant
recovery bottle and radiator. Inspect the entire
system for leaks. DO NOT REMOVE THE
COOLANT PRESSURE CAP WHEN THE COOLING
SYSTEM IS HOT.
Cooling System — Drain, Flush And Refill
NOTE:
Some vehicles require special tools to add
coolant properly. Failure to fill these systems
properly could lead to severe internal engine
damage.
WARNING!
You or others can be badly burned by hot
engine coolant (antifreeze) or steam from
your radiator. If you see or hear steam
coming from under the hood, do not open
the hood until the radiator has had time
to cool. Never open a cooling system pres -
sure cap when the radiator or coolant bottle
is hot.
Keep hands, tools, clothing, and jewelry
away from the radiator cooling fan when
the hood is raised. The fan starts automati -
cally and may start at any time, whether the
engine is running or not.
When working near the radiator cooling fan,
disconnect the fan motor lead or turn the
ignition to the OFF mode. The fan is
temperature controlled and can start at any
time the ignition is in the ON mode.7

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