Cooling System - Jeep WRANGLER 2020 Owner's Manual

WARNING! (Continued)
A hot exhaust system can start a fire if you

park over materials that can burn. Such
materials might be grass or leaves coming
into contact with your exhaust system.
Do not park or operate your vehicle in areas
where your exhaust system can contact
anything that can burn.
CAUTION!
The catalytic converter requires the use of

unleaded fuel only. Leaded gasoline will
destroy the effectiveness of the catalyst as
an emissions control device and may seri-
ously reduce engine performance and
cause serious damage to the engine.
Damage to the catalytic converter can result

if your vehicle is not kept in proper operating
condition. In the event of engine malfunc-
tion, particularly involving engine misfire or
other apparent loss of performance, have
your vehicle serviced promptly. Continued
operation of your vehicle with a severe
malfunction could cause the converter to
overheat, resulting in possible damage to
the converter and vehicle.
Under normal operating conditions, the catalytic
converter will not require maintenance. However,
it is important to keep the engine properly tuned
to ensure proper catalyst operation and prevent
possible catalyst damage.
NOTE:
Intentional tampering with emissions control
systems can result in civil penalties being
assessed against you.
In unusual situations involving grossly
malfunctioning engine operation, a scorching
odor may suggest severe and abnormal catalyst
overheating. If this occurs, stop the vehicle, turn off
the engine and allow it to cool. Service, including a
tune-up to manufacturer's specifications, should be
obtained immediately.
To minimize the possibility of catalytic converter
damage:
Do not interrupt the ignition when the trans-

mission is in gear and the vehicle is in motion.
Do not try to start the vehicle by pushing or

towing the vehicle.
SERVICING AND MAINTENANCE
Do not idle the engine with any ignition

components disconnected or removed, such
as when diagnostic testing, or for prolonged
periods during very rough idle or malfunc-
tioning 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 automati-
cally and may start at any time, whether the
engine is running or not.
When working near the radiator cooling fan,

disconnect 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.
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