2022 JEEP WRANGLER 4XE JL User Manual

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SERVICING AND MAINTENANCE 373

(Continued)

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.

 Use care when filling under hood fluids such as

engine oil, washer fluid, antifreeze, etc., to mini-

mize spillage onto the top of the engine. Any

excess fluid that is spilled onto the top of the

engine should be removed using compressed

air or an absorbent cloth.

 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 an authorized dealer.

 Mixing engine coolant types is not recom-

mended and can result in cooling system

damage. If HOAT and OAT coolant are mixed in

an emergency, have an 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 will return to the radiator from the

coolant expansion bottle/recovery tank if so

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)

OAT or HOAT, 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, clean up any ground spills

immediately. If ingested, seek emergency

assistance 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.

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.

Engine Coolant Level — 2.0L

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.