Jeep Grand Cherokee SRT 2018, Owner'S Manual, Page: 238 / 666

WARNING! (Continued)
To avoid breathing CO, refer to “Safety Tips”
in “Safety” for further information.
•
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 malfunction,
particularly involving engine misfire or other
apparent loss of performance, have your
vehicle serviced promptly. Continued opera-
tion of your vehicle with a severe malfunction
could cause the converter to overheat, re-
sulting in possible damage to the converter
and vehicle.
Under normal operating conditions, the catalytic
converter will not require maintenance. How-
ever, it is important to keep the engine properly
tuned to assure proper catalyst operation and
prevent possible catalyst damage.
NOTE:
Intentional tampering with emissions control
systems can result in civil penalties being as-
sessed against you.
In unusual situations involving grossly malfunc-
tioning engine operation, a scorching odor may
suggest severe and abnormal catalyst overheat-
ing. 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.
•
Do not idle the engine with any ignition com-
ponents disconnected or removed, such as
when diagnostic testing, or for prolonged
periods during very rough idle or malfunction-
ing 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 pres-
sure 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.
Engine Coolant Checks
Check the engine coolant (antifreeze) protection
every 12 months (before the onset of freezing
weather, where applicable). If the engine cool-
ant (antifreeze) is dirty, the system should be
drained, flushed, and refilled with fresh OAT
coolant (conforming to MS.90032) by an autho-
rized dealer. Check the front of the A/C con-
denser for any accumulation of bugs, leaves,
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