2020 DODGE DURANGO engine overheat

SERVICING AND MAINTENANCE323
(Continued)
Mix a minimum solution of 50% OAT engine
coolant that meets the requirements of FCA
Material Standard MS.90032 and distilled
water. Use higher concentrations (not to
exceed 70%) if temperatures below −34°F
(−37°C) are anticipated. Please contact an
authorized dealer for assistance.
Use only high purity water such as distilled or
deionized water when mixing the water/
engine coolant (antifreeze) solution. The use
of lower quality water will reduce the amount
of corrosion protection in the engine cooling
system.
NOTE:
It is the owner's responsibility to maintain the
proper level of protection against freezing
according to the temperatures occurring in
the area where the vehicle is operated.
Some vehicles require special tools to add
coolant properly. Failure to fill these systems
properly could lead to severe internal engine
damage. If any coolant is needed to be added
to the system, please contact a local autho -
rized dealer.
Mixing engine coolant (antifreeze) types is
not recommended and can result in cooling
system damage. If HOAT and OAT coolant are
mixed in an emergency, have a authorized
dealer drain, flush, and refill with OAT coolant
(conforming to MS.90032) as soon as
possible.
Cooling System Pressure Cap
The cap must be fully tightened to prevent loss
of engine coolant (antifreeze), and to ensure
that engine coolant (antifreeze) will return to
the radiator from the coolant expansion bottle/
recovery tank (if equipped).
The cap should be inspected and cleaned if
there is any accumulation of foreign material on
the sealing surfaces.
Disposal Of Used Coolant
Used ethylene glycol-based coolant (antifreeze)
is a regulated substance requiring proper
disposal. Check with your local authorities to
determine the disposal rules for your
community. To prevent ingestion by animals or
children, do not store ethylene glycol-based
coolant in open containers or allow it to remain
in puddles on the ground. If ingested by a child
or pet, seek emergency assistance
immediately. Clean up any ground spills
immediately.
Coolant Level
The coolant bottle provides a quick visual
method for determining that the coolant level is
adequate. With the engine off and cold, the
level of the engine coolant (antifreeze) in the
bottle should be between the ranges indicated
on the bottle.
WARNING!
Do not open hot engine cooling system.
Never add engine coolant (antifreeze) when
the engine is overheated. Do not loosen or
remove the cap to cool an overheated
engine. Heat causes pressure to build up in
the cooling system. To prevent scalding or
injury, do not remove the pressure cap
while the system is hot or under pressure.
Do not use a pressure cap other than the
one specified for your vehicle. Personal
injury or engine damage may result.
WARNING! (Continued)
7

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354TECHNICAL SPECIFICATIONS
(Continued)
The MMT content of gasoline may not be
indicated on the gasoline pump; therefore, you
should ask your gasoline retailer whether the
gasoline contains MMT. MMT is prohibited in
Federal and California reformulated gasoline.
FUEL SYSTEM CAUTIONS
NOTE:
Intentional tampering with the emissions
control system can result in civil penalties being
assessed against you.
CARBON MONOXIDE WARNINGS
CAUTION!
Follow these guidelines to maintain your
vehicle’s performance:
The use of leaded gasoline is prohibited by
Federal law. Using leaded gasoline can
impair engine performance and damage
the emissions control system.
An out-of-tune engine or certain fuel or igni -
tion malfunctions can cause the catalytic
converter to overheat. If you notice a
pungent burning odor or some light smoke,
your engine may be out of tune or malfunc -
tioning and may require immediate service.
Contact an authorized dealer for service
assistance.
The use of fuel additives, which are now
being sold as octane enhancers, is not
recommended. Most of these products
contain high concentrations of methanol.
Fuel system damage or vehicle perfor -
mance problems resulting from the use of
such fuels or additives is not the responsi -
bility of the manufacturer and may void or
not be covered under the New Vehicle
Limited Warranty.
CAUTION! (Continued)
WARNING!
Carbon monoxide (CO) in exhaust gases is
deadly. Follow the precautions below to
prevent carbon monoxide poisoning:
Do not inhale exhaust gases. They contain
carbon monoxide, a colorless and odorless
gas, which can kill. Never run the engine in
a closed area, such as a garage, and never
sit in a parked vehicle with the engine
running for an extended period. If the
vehicle is stopped in an open area with the
engine running for more than a short
period, adjust the ventilation system to
force fresh, outside air into the vehicle.
Guard against carbon monoxide with
proper maintenance. Have the exhaust
system inspected every time the vehicle is
raised. Have any abnormal conditions
repaired promptly. Until repaired, drive with
all side windows fully open.

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450
Radiator Cap
............................................. 323Selection Of Coolant (Antifreeze)......322, 355, 356, 357, 359Corrosion Protection...................................... 346Cruise Control (Speed Control)............ 205, 208Cruise Light......................................... 117, 119Cupholders...................................................... 86Customer Assistance..................................... 444Cybersecurity................................................. 361
D
Daytime Running Lights................................... 51Dealer Service............................................... 308Defroster, Windshield.................................... 181Diagnostic System, Onboard......................... 120Disabled Vehicle Towing................................ 290DisposalAntifreeze (Engine Coolant)....................... 323Disturb........................................................... 420Do Not Disturb............................................... 441Door Ajar.............................................. 111, 112Door Ajar Light..................................... 111, 112Door Locks............................................... 24, 29Child-Protection Door Lock — Rear Doors.... 29Door Opener, Garage....................................... 78Doors............................................................... 24Driver’s Seat Back Tilt..................................... 32Driving........................................................... 257DVD Player (Video Entertainment
System)......................................................... 425
E
Economy (Fuel) Mode................................... 192Electric Brake Control System....................... 123Anti-Lock Brake System............................ 122Electronic Roll Mitigation................. 124, 130Electric Remote Mirrors................................... 49Electrical Outlet, Auxiliary (Power Outlet)......... 87Electronic Speed Control (Cruise Control)..... 206Electronic Stability Control (ESC).................. 125Electronic Throttle Control Warning Light...... 111Electronically Shifted Transfer Case............. 199Emergency Gas Can Refueling...................... 286Emergency, In Case OfFreeing Vehicle When Stuck..................... 289Hazard Warning Flasher........................... 261Jacking............................................ 275, 327Jump Starting........................................... 283Emission Control System Maintenance........ 121Engine.................................................. 304, 306Air Cleaner................................................ 311Block Heater............................................. 188Break-In Recommendations............ 188, 189Compartment......................... 304, 305, 306Compartment Identification............. 304, 305Coolant (Antifreeze).................................. 359Cooling..................................................... 321Exhaust Gas Caution....................... 180, 354Fails To Start............................................ 187Flooded, Starting...................................... 187
Fuel Requirements.......................... 351, 355Jump Starting........................................... 283Oil........................ 308, 309, 355, 356, 359Oil Filler Cap........................... 304, 309, 310Oil Filter.................................................... 311Oil Selection.................. 309, 355, 356, 357Oil Synthetic.............................................. 311Overheating.............................................. 287Starting............................................ 184, 185Engine Oil Viscosity.............................. 309, 310Engine Oil Viscosity Chart.............................. 310Enhanced Accident Response Feature161, 293Ethanol.......................................................... 353Exhaust Gas Cautions.......................... 180, 354Exhaust System................................... 180, 320Exterior Lights............................... 50, 183, 266
F
FiltersAir Cleaner
................................................ 311Air Conditioning........................ 70, 311, 314Engine Oil........................................ 311, 359Engine Oil Disposal................................... 311Flashers........................................................ 261Hazard Warning........................................ 261Turn Signals............................ 118, 183, 269Flash-To-Pass...................................................52Flooded Engine Starting................................ 187

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453
Locks Child Protection
........................................... 29Manual........................................................ 24Power Door.................................................. 25Lubrication, Body........................................... 316Lug Nuts/Bolts.............................................. 350Luggage Carrier............................................... 90
M
Maintenance................................................... 74Maintenance Free Battery............................. 307Maintenance Schedule........................ 294, 298Malfunction Indicator Light
(Check Engine).................................... 113, 121ManualService...................................................... 447Memory Feature (Memory Seats).................... 30Memory Seat................................................... 30Memory Seats And Radio................................ 30Methanol....................................................... 353Mirrors............................................................. 47Electric Remote........................................... 49Exterior Folding........................................... 48Heated........................................................ 49Outside........................................................ 48Rearview..................................... 47, 48, 261Vanity.......................................................... 50Modifications/AlterationsVehicle........................................................ 11
Monitor, Tire Pressure System...................... 138Mopar Parts.................................................. 446Multi-Function Control Lever............................ 50
N
New Vehicle Break-In Period......................... 188
O
Occupant Restraints..................................... 143Octane Rating, Gasoline (Fuel)............ 351, 359Oil Change Indicator..................................... 101Reset........................................................ 101Oil Filter, Change.......................................... 311Oil Filter, Selection........................................ 311Oil Pressure Light.......................................... 112Oil, Engine............................................ 308, 359Capacity........................................... 355, 356Change Interval............................... 308, 309Dipstick.................................................... 307Disposal................................................... 311Filter................................................ 311, 359Filter Disposal........................................... 311Identification Logo.................................... 310Materials Added To.................................. 311Pressure Warning Light............................ 112Recommendation................... 309, 355, 356Synthetic.................................................. 311Viscosity........................ 309, 310, 355, 356
Onboard Diagnostic System.......................... 120Opener, Garage Door (Homelink).....................78Operating Precautions.................................. 120Operator ManualOwner's Manual................................. 10, 447Outside Rearview Mirrors.................................48Overheating, Engine...................................... 287
P
Paint Care..................................................... 346Parking Brake............................................... 190ParkSense System, Rear...................... 221, 227Passive Entry....................................................26Performance................................................. 104Pets............................................................... 180Pinch Protection...............................................74Placard, Tire And Loading Information.......... 332PowerBrakes...................................................... 350Distribution Center (Fuses)....................... 270Door Locks...................................................25Inverter........................................................90Liftgate........................................................75Mirrors.........................................................49Outlet (Auxiliary Electrical Outlet).................87Seats...........................................................37Steering........................................... 202, 358Sunroof........................................................73Tilt/Telescoping Steering Column................46Windows......................................................71
11

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