engine overheat JEEP COMMANDER 2010 1.G User Guide

NOTE:There are steps that you can take to slow down
an impending overheat condition:
•If your air conditioner (A/C) is on, turn it off. The A/C
system adds heat to the engine cooling system and
turning the A/C off can help remove this heat.
•You can also turn the Temperature Control to maxi-
mum heat, the Mode Control to floor and the Blower
Control to high. This allows the heater core to act as a
supplement to the radiator and aids in removing heat
from the engine cooling system.
JACKING AND TIRE CHANGING
WARNING!
•Getting under a jacked-up vehicle is dangerous.
The vehicle could slip off the jack and fall on you.
You could be crushed. Never get any part of your
body under a vehicle that is on a jack. If you need
to get under a raised vehicle, take it to a service
center where it can be raised on a lift.
•The jack is a tool for changing tires only. The jack
should not be used to lift the vehicle for service
purposes. The vehicle should be jacked on a firm
level surface only. Avoid ice or slippery areas.
6
WHAT TO DO IN EMERGENCIES 343

CAUTION!
The catalytic converter requires the use of unleaded
fuel only. Leaded gasoline will destroy the effective-
ness of the catalyst as an emissions control device
and may seriously reduce engine performance and
cause serious damage to the engine.
Under normal operating conditions, the catalytic con-
verter will not require maintenance. However, it is im-
portant to keep the engine properly tuned to assure
proper catalyst operation and prevent possible catalyst
damage.
CAUTION!
Damage to the catalytic converter can result if your
vehicle is not kept in proper operating condition. In
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.
NOTE: Intentional tampering with emissions control
systems can result in civil penalties being assessed
against you.
372 MAINTAINING YOUR VEHICLE

WARNING!
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.
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 tuneup to manufacturer’s specifica-
tions, should be obtained immediately. To minimize the possibility of catalytic converter dam-
age:•Do not shut off the engine or interrupt the ignition,
when the transmission is in gear and the vehicle is in
motion.
•Do not try to start the engine by pushing or towing the
vehicle.
•Do not idle the engine with any spark plug wires
disconnected or removed, such as when diagnostic
testing, or for prolonged periods during very rough
idle or malfunctioning operating conditions.
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MAINTAINING YOUR VEHICLE 373

Please note that it is the owner’s responsibility to main-
tain the proper level of protection against freezing ac-
cording to the temperatures occurring in the area where
the vehicle is operated.
NOTE:Mixing engine coolant (antifreeze) types will
decrease the life of the engine coolant (antifreeze) and
will require more frequent engine coolant (antifreeze)
changes.
Cooling System Pressure Cap
The cap must be fully tightened to prevent loss of engine
coolant (antifreeze), and to ensure that engine coolant
(antifreeze) will return to the radiator from the coolant
recovery tank.
The cap should be inspected and cleaned if there is any
accumulation of foreign material on the sealing surfaces.
WARNING!
•The warning words DO NOT OPEN HOT on the
cooling system pressure cap are a safety precau-
tion. 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 en-
gine damage may result.
Disposal of Used Engine Coolant
Used ethylene glycol-based engine coolant (antifreeze) is
a regulated substance requiring proper disposal. Check
with your local authorities to determine the disposal
7
MAINTAINING YOUR VEHICLE 377

Electronic Roll Mitigation (ERM)............. 274
Electronic Speed Control (Cruise Control) ....... 119
Electronic Stability Program (ESP) ............ 275
Electronic Throttle Control Warning Light ...... 169
Electronic Vehicle Information Center (EVIC) . 167,170
Emergency, In Case of Freeing Vehicle When Stuck ............... 255
Hazard Warning Flasher ................. 342
Jacking ............................. 343
Jump Starting ......................... 351
Tow Hooks .......................... 353
Emission Control System Maintenance ......360,412
Engine Air Cleaner .......................... 366
Block Heater ......................... 245
Break-In Recommendations ................ 73
Compartment ...................... 357,358
Compartment Identification ............357,358
Cooling ............................. 374 Exhaust Gas Caution
................ 38,74,317
Fails to Start .......................... 244
Flooded, Starting ...................... 244
Fuel Requirements .................. 314,407
Multi-Displacement .................... 271
Oil .............................. 363,407
Oil Change Interval .................... 364
Oil Disposal .......................... 365
Oil Filter ............................ 366
Oil Filter Disposal ..................... 365
Oil Selection ....................... 364,407
Oil Synthetic ......................... 365
Overheating .......................... 342
Starting ............................. 243
Temperature Gauge .................... 166
Engine Oil Viscosity ...................... 365
Engine Oil Viscosity Chart ................. 365
Enhanced Accident Response Feature .......... 58
Entry System, Illuminated .................. 20
446 INDEX

Oil, Engine............................ 363
Capacity ............................ 407
Change Interval ....................... 364
Dipstick ............................. 363
Disposal ............................ 365
Filter ............................... 366
Filter Disposal ........................ 365
Identification Logo ..................... 364
Materials Added to ..................... 365
Recommendation ................... 364,407
Synthetic ............................ 365
Viscosity ......................... 365,407
Onboard Diagnostic System ..............359,360
Opener, Garage Door (HomeLink) ........... 130
Operator Manual (Owner’s Manual) ............ 6
Outside Rearview Mirrors .................. 83
Overdrive ............................. 251
Overdrive OFF Switch .................... 251
Overhead Console ....................... 130 Overheating, Engine
................... 166,342
Owner’s Manual (Operator Manual) .........6,437
Paint Care ............................. 387
Paint Damage .......................... 387
Panic Alarm ............................ 24
Park Sense System, Rear ................... 122
Parking Brake .......................... 267
Passing Light ........................... 111
Pedals, Adjustable ....................... 117
Personal Settings ........................ 181
Pets .................................. 72
Pets, Transporting ........................ 72
Phone, Cellular .......................... 85
Phone, Hands-Free (uconnect) ............... 85
Placard, Tire and Loading Information ......... 290
Polishing and Waxing ..................... 388
Power Distribution Center (Fuses) ............... 395
Door Locks ........................... 29
10
INDEX 453