Jeep GRAND CHEROKEE 4XE 2022, Руководство пользователя, Страница: 59 / 72

SERVICING AND MAINTENANCE 57
With the engine OFF and cold, the level of the
engine coolant should be within the OK range
between the ADD and FULL range on the dipstick.
1. Remove the cap with level dipstick from the
engine coolant bottle.
2. Clean off the coolant from the dipstick.
3. Rest the cap on the opening of the coolant
bottle without tightening the cap.
4. Remove the cap with dipstick and check the
coolant level on the dipstick.
The radiator normally remains completely full, so
there is no need to remove the radiator/coolant
pressure cap unless checking for engine coolant
freeze point or replacing coolant. Advise your
service attendant of this. As long as the engine
operating temperature is satisfactory, the coolant
bottle need only be checked once a month.
When additional engine coolant is needed to
maintain the proper level, only OAT coolant that
meets the requirements of the manufacturer
Material Standard MS.90032 should be added to
the coolant bottle. Do not overfill.
Cooling System Notes
NOTE:
When the vehicle is stopped after a few miles/kilo -
meters of operation, you may observe vapor coming
from the front of the engine compartment. This is
normally a result of moisture from rain, snow, or high
humidity accumulating on the radiator and being
vaporized when the thermostat opens, allowing hot
engine coolant (antifreeze) to enter the radiator.
If an examination of the engine compartment
shows no evidence of radiator or hose leaks, the
vehicle may be safely driven. The vapor will soon
dissipate.

Do not overfill the coolant expansion bottle.

Check the coolant freeze point in the radiator
and in the coolant expansion bottle. If engine
coolant needs to be added, the contents of the
coolant expansion bottle must also be protected
against freezing.

If frequent engine coolant additions are required,
the cooling system should be pressure tested for
leaks.

Maintain coolant concentration at a minimum of
50% OAT coolant (conforming to MS.90032)
and deionized, or distilled water.

Use only high purity water such as deionized, or
distilled water when mixing the water/coolant
solution for the engine, battery or high voltage
electronics cooling systems. The use of lower
quality water will reduce the amount of corro -
sion protection in the cooling system.

Make sure that the coolant expansion bottle
overflow hoses are not kinked or obstructed.

Keep the front of the radiator clean. If your
vehicle is equipped with air conditioning, keep
the front of the condenser clean.

Do not change the thermostat for Summer or
Winter operation. If replacement is ever neces -
sary, install ONLY the correct type thermostat.
Other designs may result in unsatisfactory
factory engine cooling performance, poor gas
mileage, and increased emissions.

The coolant freeze point in the battery and
power electronics loop should be checked by an
authorized dealer as a special tool is required to
remove the cap from those expansion bottles.

Electric/Battery coolant system must be serviced
by an authorized dealer. If the coolant level is
below what is specified on the reservoir, contact
an authorized dealer for service. These systems
require the use of high purity water such as deion -
ized, or distilled water when mixing the water and
coolant solution. The use of lower quality water
will reduce the amount of corrosion protection in
the cooling systems.
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