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Check the Power Electronics and Battery Thermal Manage-
ment Systems coolant (antifreeze) protection every 12
months (before the onset of freezing weather, where appli-
cable).
Maintain coolant (antifreeze) concentration at a minimum
of 50% Mopar Antifreeze/Coolant 10 Year/150,000 Mile
Formula OAT (Organic Additive Technology) and
distilled/deionized water for proper corrosion protection.
Check the coolant bottles tubing for brittle rubber, crack-
ing, tears, cuts and tightness of the connection at the bottles
and radiator. Inspect the entire system for leaks.
Check the front of the A/C condenser for any accumula-
tion of bugs, leaves, etc. If dirty, clean by gently spraying
water from a garden hose vertically down the face of the
condenser.
NOTE:DO NOT REMOVE THE COOLANT PRESSURE
CAP WHEN THE COOLING SYSTEM IS HOT.
WARNING!
You or others can be badly burned by hot 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 is hot.
218 SERVICING AND MAINTENANCE
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Power Electronics And Battery Thermal
Management Systems — Cooling Pressure Caps
The caps must be fully tightened to prevent loss of coolant
(antifreeze).
The caps should be inspected and cleaned if there is any
accumulation of foreign material on the sealing surfaces.
NOTE:
•The pressure caps on the reservoirs are unique and rated
at 5 PSI (34.5 kPa).
• Use only Mopar replacement parts.
WARNING!
•The warning words “DO NOT OPEN HOT” on the
cooling system pressure cap are a safety precaution.
Never add coolant (antifreeze) when the cooling
system is overheated. Do not loosen or remove the
cap to cool an overheated cooling system. Heat
causes pressure to build up in the cooling system. To
prevent scalding or injury, do not remove the pres-
sure cap while the system is hot or under pressure.
• Do not use a pressure cap other than the one speci-
fied for your vehicle. Personal injury or vehicle
damage may result.
Selection Of Coolant
Refer to “Fluids And Lubricants” in “Technical Specifica-
tions” for further information.
CAUTION!
• Mixing of coolant (antifreeze) other than specified
Organic Additive Technology (OAT) coolant (anti-
freeze), may result in cooling system damage and
may decrease corrosion protection. Organic Additive
Technology (OAT) coolant is different and should
not be mixed with Hybrid Organic Additive Tech-
nology (HOAT) coolant (antifreeze). If a non-OAT
coolant (antifreeze) is introduced into the cooling
system in an emergency, it should be replaced with
the specified coolant (antifreeze) as soon as possible.
• Do not use water alone or alcohol-based coolant
(antifreeze) products. Do not use additional rust
inhibitors or antirust products, as they may not be
compatible with the radiator coolant and may plug
the radiator.
• This vehicle has not been designed for use with
propylene glycol-based coolant (antifreeze). Use of
propylene glycol-based coolant (antifreeze) is not
recommended.
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SERVICING AND MAINTENANCE 219
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CAUTION!
It is recommended to have the cooling systems ser-
viced at your authorized dealer. Failure to do so could
result in poor cooling system performance and/or ve-
hicle damage.
Disposal Of Used Power Electronics And Battery
Thermal Management Systems Coolant
Used antifreeze is a regulated substance requiring proper
disposal. Check with your local authorities to determine
the disposal rules for your community. To prevent inges-
tion by animals or children, do not store antifreeze in open
containers or allow it to remain in puddles on the ground.
If ingested by a child, contact a physician immediately.
Clean up any ground spills immediately.
Points To Remember
WARNING!
•Turn vehicle OFF and disconnect the fan motor lead
before working near the radiator cooling fan.
• You or others can be badly burned by hot 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 pressure cap when the
radiator or coolant bottle is hot.
• Do not put your hands, tools, clothing, and jewelry
near the radiator cooling fan. The fan may start at any
time, whether the ignition is on or off.
If an examination of your underhood compartment shows
no evidence of cooler or hose leaks, the vehicle may be
safely driven.
• Do not overfill the coolant recovery bottles.
• Check coolant (antifreeze) freeze point in the coolant
recovery bottles. If coolant (antifreeze) needs to be
added, contents of coolant recovery bottles must also be
protected against freezing.
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