Cooling System; the event of engine malfunction, particularly involv-; ing engine misfire or other apparent loss of perfor-- Page 389

2018 Jeep Wrangler JK Owner Manual

Table of Contents

GETTING TO KNOW YOUR VEHICLE
GETTING TO KNOW YOUR INSTRUMENT PANEL
SAFETY
OCCUPANT RESTRAINT SYSTEMS
STARTING AND OPERATING
SERVICING AND MAINTENANCE
MULTIMEDIA
UCONNECT PHONE — IF EQUIPPED
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CAUTION!

(Continued)

the event of engine malfunction, particularly involv-
ing engine misfire or other apparent loss of perfor-
mance, have your vehicle serviced promptly. Contin-
ued 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 assure proper catalyst

operation and prevent possible catalyst damage.

NOTE:

Intentional tampering with emissions control sys-

tems 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 transmission 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 components

disconnected or removed, such as when diagnostic

testing, or for prolonged periods during very rough idle

or malfunctioning 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.

(Continued)

8

SERVICING AND MAINTENANCE

387

Detailed Information for 2018 Jeep Wrangler JK Owner Manual

Lists of information found in 2018 Jeep Wrangler JK Owner Manual - Page 389

  • Do not interrupt the ignition when the transmission 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 components disconnected or removed, such as when diagnostic testing, or for prolonged periods during very rough idle or malfunctioning operating conditions.
  • You or others can be badly burned by hot engine coolant (antifreeze) or steam from your radiator.

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