Cooling System - Dodge HORNET 2024 Owner's Manual

230 SERVICING AND MAINTENANCE
To minimize the possibility of catalytic converter damage:
•
Do not interrupt the ignition when the transmission
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 during diagnostic
testing, or for prolonged periods during very rough
idle or malfunctioning operating conditions.

COOLING SYSTEM

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
pressure 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 automatically and may start at any
time, whether the engine is running or not.
•
When working near the radiator cooling fan, dis-
connect 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.
Coolant Checks
Check engine coolant (antifreeze) protection every 12
months (before the onset of freezing weather, where
applicable). If the engine coolant is dirty or rusty in
appearance, the system should be drained, flushed and
refilled with fresh engine coolant. Check the front of the
A/C condenser for any accumulation of bugs, leaves,
etc. If dirty, clean by gently spraying water from a gar-
den hose vertically down the face of the condenser.
Cooling System — Drain, Flush And Refill
Some vehicles require special tools to add coolant prop-
erly. 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 an authorized
dealer.
If the engine coolant (antifreeze) is dirty or contains
visible sediment, have an authorized dealer clean and
flush with OAT coolant (conforming to MS.90032).
Refer to the Maintenance Plan for the proper mainte-
nance intervals page 220.
Electric/Battery Coolant System — PHEV
(If Equipped)
These coolant systems must be serviced by an autho-
rized dealer. If the coolant level is below what is speci-
fied on the reservoir, contact an authorized dealer for
service.
These systems require the use of high purity water,
such as deionized, or distilled water, when mixing the
water and coolant (antifreeze) solution. The use of
lower quality water will reduce the amount of corrosion
protection in the cooling systems. If the coolant level of
the battery coolant system is low, the Hybrid Electric
Vehicle System Service Light will be illuminated on the
instrument cluster.
Selection Of Coolant
For further information page 267.
NOTE:
•
Mixing of engine coolant (antifreeze) other than
specified Organic Additive Technology (OAT) engine
coolant, may result in engine damage and may
decrease corrosion protection. OAT engine coolant is
different and should not be mixed with Hybrid
Organic Additive Technology (HOAT) engine coolant
or any "globally compatible" coolant. If a non-OAT
engine coolant is introduced into the cooling system
in an emergency, the cooling system will need to be
drained, flushed, and refilled with fresh OAT coolant
(conforming to MS.90032), by an authorized dealer
as soon as possible.
•
Do not use water alone or alcohol-based engine
coolant products. Do not use additional rust inhibi-
tors or anti-rust products, as they may not be com-
patible with the radiator engine coolant and may
plug the radiator.
•
This vehicle has not been designed for use with pro-
pylene glycol-based engine coolant. Use of propyl-
ene glycol-based engine coolant is not
recommended.
•
Some vehicles require special tools to add coolant
properly. Failure to fill these systems properly could
lead to severe internal engine damage. If any cool-
ant is needed to be added to the system please con-
tact an authorized dealer.
Adding Coolant
Your vehicle has been built with an improved engine
coolant (OAT coolant conforming to MS.90032) that
allows extended maintenance intervals. This engine
coolant (antifreeze) can be used up to 10 years or
150,000 miles (240,000 km) before replacement.