catalytic converter JEEP PATRIOT 2007 1.G Owners Manual

25. OFF ROAD Light Ð If Equipped
The symbol illuminates (is armed) when the 4WD lock
switch is activated and the transmission range indicator
is in Low or Reverse position.
26. Malfunction Indicator Light
This light is part of an onboard diagnostic system
called OBD that monitors emissions, engine, and
automatic transmission control systems. The light
will illuminate when the key is in the ON/RUN position
before engine start. If the bulb does not come on when
turning the key from OFF to ON/RUN, have the condi-
tion checked promptly.
Certain conditions such as a loose or missing gas cap,
poor fuel quality, etc. may illuminate the light after
engine start. The vehicle should be serviced if the light
stays on through several of your typical driving cycles. In
most situations the vehicle will drive normally and will
not require towing.If the Malfunction Indicator Light flashes when the
engine is running, serious conditions may exist that
could lead to immediate loss of power or severe catalytic
converter damage. The vehicle should be serviced as
soon as possible if this occurs.
27. Hill Descent Control Light Ð If Equipped
The symbol illuminates (is armed) when the
4WD lock switch is activated and the transmis-
sion range indicator is in Low or Reverse
position (Off Road Mode).
28. Front Fog Light Indicator Ð If Equipped
This light shows when the front fog lights are ON.
UNDERSTANDING YOUR INSTRUMENT PANEL 177
4

Manual Transaxle
Before starting the engine fully apply the parking brake,
press the clutch pedal to the floor and place the gear
selector in NEUTRAL.
NOTE:The engine will not start unless the clutch pedal
is pressed to the floor.
NOTE:If key won't turn and steering wheel is locked,
rotate the wheel in either direction to relieve pressure on
the locking mechanism and then turn the key.
Normal Starting
Normal Starting of either a cold or a warm engine does
not require pumping or depressing the accelerator pedal.
Simply turn the ignition switch to the ªSTART'º position
and release when the engine starts. If the engine fails to
start within 15 seconds, turn the ignition switch to the
ªOFFº position, wait 10 to 15 seconds, then repeat the
normal starting procedure.
WARNING!
Do not attempt to push or tow your vehicle to get it
started. Vehicles equipped with an automatic trans-
axle cannot be started this way. Unburned fuel could
enter the catalytic converter and once the engine has
started, ignite and damage the converter and vehicle.
If the vehicle has a discharged battery, booster cables
may be used to obtain a start from another vehicle.
This type of start can be dangerous if done improp-
erly, so follow the procedure carefully. See section 6
of this manual for jump starting instructions.
Extremely Cold Weather (below220ÉF or229ÉC)
To insure reliable starting at these temperatures, use of an
externally powered electric engine block heater (available
from your dealer) is recommended.
238 STARTING AND OPERATING

performance in some vehicles. The manufacturer recom-
mends using gasolines without MMT. Since the MMT
content of gasoline may not be indicated on the pump,
you should ask your gasoline retailer whether or not
his/her gasoline contains MMT.
It is even more important to look for gasolines without
MMT in Canada, because MMT can be used at levels
higher than those allowed in the United States.
MMT is prohibited in Federal and California reformu-
lated gasolines.
Materials Added to Fuel
All gasoline sold in the United States is required to
contain effective detergent additives. Use of additional
detergents or other additives is not needed under normal
conditions and would result in additional cost. Therefore
you should not have to add anything to the fuel.
Fuel System Cautions
CAUTION!
Follow these guidelines to maintain your vehicle's
performance:
²The use of leaded gas is prohibited by Federal law.
Using leaded gasoline can impair engine performance,
damage the emission control system.
²An out-of-tune engine, or certain fuel or ignition
malfunctions, can cause the catalytic converter to
overheat. If you notice a pungent burning odor or
some light smoke, your engine may be out of tune or
malfunctioning and may require immediate service.
Contact your dealer for service assistance.
²The use of fuel additives which are now being sold as
octane enhancers is not recommended. Most of these
STARTING AND OPERATING 305
5

JUMP-STARTING PROCEDURES DUE TO A LOW
BATTERY
WARNING!
Take care to avoid the radiator cooling fan whenever
the hood is raised. It can start anytime the ignition
switch is on. You can be hurt by the fan.
WARNING!
Do not attempt to push or tow your vehicle to get it
started. Vehicles equipped with an automatic trans-
axle cannot be started this way and may be damaged.
Unburned fuel could enter the catalytic converter and
once the engine has started, ignite and damage the
converter and vehicle. If the vehicle has a discharged
battery, booster cables may be used to obtain a start
from another vehicle. This type of start can be
dangerous if done improperly, so follow this proce-
dure carefully.
WHAT TO DO IN EMERGENCIES 331
6

MAINTAINING YOUR VEHICLE
CONTENTS
mEngine Compartment Ð Gasoline Engines.....342
mOnboard Diagnostic System Ð OBD II........343
NLoose Fuel Filler Cap Message............344
mEmissions Inspection And Maintenance
Programs............................344
mReplacement Parts......................346
mDealer Service.........................346
mMaintenance Procedures..................347
NEngine Oil..........................347NDrive Belt ± Check Condition.............351
NSpark Plugs.........................351
NCatalytic Converter....................351
NCrankcase Emission Control System........353
NFuel Filter..........................353
NAir Cleaner Element (Filter)..............353
NMaintenance-Free Battery................354
NAir Conditioner Maintenance.............356
NPower Steering Ð Fluid Check............357
7

Drive Belt ± Check Condition
At the mileage shown in the maintenance schedules,
check the drive belt for condition.
Inspect the drive belt for evidence of cuts, cracks, or
glazing and replace belt if any sign of damage which
could result in belt failure.
The belt is self-tensioning and will not need adjustment.
Spark Plugs
Spark plugs must fire properly to assure engine perfor-
mance and emission control. New plugs should be in-
stalled at the specified mileage. The entire set should be
replaced if there is any malfunction due to a faulty spark
plug. Refer to the Engine data Label located under the
hood for the proper type of spark plug for use in your
vehicle.
Catalytic Converter
The catalytic converter requires the use of unleaded fuel
only. Leaded gasoline will destroy the effectiveness of the
catalyst as an emission control device.
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.
MAINTAINING YOUR VEHICLE 351
7

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 the
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 tune up to manufacturers specifica-
tions, should be obtained immediately.
352 MAINTAINING YOUR VEHICLE

Battery............................... 354
Keyless Transmitter Replacement (RKE)....... 29
Belts, Drive............................ 351
Body Mechanism Lubrication............... 358
B-Pillar Location........................ 281
Brake Assist System...................... 138
Brake Fluid............................ 389
Brake, Parking.......................... 270
Brake System........................272,366
Anti-Lock (ABS).................136,137,273
Hoses.............................. 366
Master Cylinder....................... 367
Parking............................. 270
Warning Light........................ 172
Brakes.............................272,366
Brake/Transmission Interlock............... 241
Break-In Recommendations, New Vehicle........ 69
Bulb Replacement.....................380,381
Bulbs, Light............................ 380Calibration, Compass..................... 188
Capacities, Antifreeze (Engine Coolant)........ 388
Capacities, Fluid........................ 388
Caps, Filler
Fuel................................ 307
Oil (Engine).......................342,349
Car Washes............................ 372
Carbon Monoxide Warning................. 306
Cargo Area Cover....................... 154
Cargo Area Features...................... 152
Cargo Compartment
Light............................... 152
Luggage Carrier....................... 160
Cargo Light............................ 152
Cargo Load Floor........................ 156
Cargo Tie-Downs........................ 156
Catalytic Converter...................... 351
Caution, Exhaust Gas...................... 69
CD (Compact Disc) Player...............191,199
INDEX 423
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