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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, discon-
nect 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 the engine, battery (if equipped), intercooler
(if equipped), and Motor Generator Unit (MGU)
(if equipped) coolant (antifreeze) protection every
12 months (before the onset of freezing weather, where
applicable). If the engine, battery (if equipped), inter-
cooler (if equipped), and MGU (if equipped) coolant is
dirty or rusty in appearance, 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 (if equipped) or
radiator for any accumulation of bugs, leaves, etc.
If dirty, clean by gently spraying water from a garden
hose vertically down the face of the A/C condenser
(if equipped) or the back of the radiator core.
Check the engine, battery (if equipped), intercooler
(if equipped), and MGU (if equipped) cooling system
hoses for brittle rubber, cracking, tears, cuts, and tight-
ness 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 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).
For the proper maintenance intervals, see
page 282.
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.
SERVICING AND MAINTENANCE
Selection Of Coolant
For further information
page 346.
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 (antifreeze) products. Do not use additional
rust inhibitors or anti-rust products, as they may not
be compatible 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.
301
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