2004 CHRYSLER 300 M catalytic converter

If the pointer rises to the “H” mark, stop the vehicle and
turn off the engine until the problem is corrected.
CAUTION!
Continuing to drive with an overheated engine cool-
ing system can cause damage to the engine or other
components.
There are steps that you can take to slow down an
impending overheat condition. If your air conditioning is
on, turn it off. The air conditioning system adds heat to
the engine cooling system and turning off the A/C
removes this heat. You can also turn the Temperature
control to maximum heat, the Mode control to Floor and
the Fan 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.
16. Malfunction Indicator Light
This light is part of an onboard diagnostic
system called OBD that monitors engine and
automatic transmission control systems. Thelight will illuminate when the key is in the ON
position before engine start. If the bulb does not come
on when turning the key from OFF to ON, have the
condition checked promptly.
Certain conditions such as a loose or missing gas cap or
poor fuel quality 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.
The Malfunction Indicator Light flashes to alert to serious
conditions 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.
17. Trip Odometer Reset Knob
To reset the trip odometer, push the reset knob for about
two seconds.
18. Airbag Light
The light will come on and remain on for 6 to 8
seconds as a bulb check when the ignition switch
is first turned ON. If the bulb is not lit during starting,
UNDERSTANDING YOUR INSTRUMENT PANEL 115
4

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 unnecessary cost. There-
fore, you should not have to add anything to the fuel.
Sulfur in Gasoline
If you live in the Northeast United States, your vehicle
may have been designed to meet California low emission
standards with cleaner burning California reformulated
gasoline with low sulfur. If such fuels are not available in
states adopting California emission standards, your ve-
hicle will operate satisfactorily on fuels meeting Federal
specifications, but emission control system performance
may be adversely affected.
Gasoline sold outside of California is permitted to have
higher sulfur levels which may affect the performance of
the vehicle’s catalytic converter. This may cause the
Malfunction Indicator Light to illuminate. The manufac-
turer recommends that you try a different brand ofunleaded gasoline having lower sulfur to determine if the
problem is fuel related prior to returning your vehicle to
an authorized dealer for service.
CAUTION!
If the Malfunction Indicator Light is flashing, imme-
diate service is required. See the On Board Diagnos-
tics paragraph in the Maintenance section of this
manual.
ADDING FUEL
Fuel Filler Cap (Gas Cap)
The gas cap is behind the fuel filler door on the left side
of the vehicle. If the gas cap is lost or damaged, be sure
the replacement cap is for use with this vehicle.
STARTING AND OPERATING 177
5

ONBOARD DIAGNOSTIC SYSTEM (OBD II)
To meet new government regulations and promote
cleaner air, your vehicle is equipped with a sophisticated
onboard diagnostic system called OBD II. This system
monitors the performance of the emissions, engine, and
automatic transaxle control systems. When these systems
are operating properly, your vehicle will provide excel-
lent performance and fuel economy, as well as engine
emissions well within current government regulations.
If any of these systems require service, the OBD II system
will turn on the Malfunction Indicator or Service Engine
Soon Light. It will also store diagnostic codes and other
information to assist your service technician in making
repairs. Although your vehicle will usually be driveable
and not need towing, see your dealer for service as soon
as possible.CAUTION!
Prolonged driving with the light on could cause
further damage to the emission control system. It
could also affect fuel economy and driveability. The
vehicle must be serviced before any state emissions
tests can be performed.
If the light is flashing, severe catalytic converter damage
and power loss will soon occur. Immediate service is
required.
If the gas cap is not tightened properly, the light may
come on. Be sure the gas cap is tightened every time you
add fuel. Tighten the cap until you hear it “click.”
198 MAINTAINING YOUR VEHICLE

Engine Air Cleaner Filter
Under normal driving conditions, replace the air filter at
the intervals shown on Schedule “A”. If, however, you
drive the vehicle frequently under dusty or severe con-
ditions, the filter element should be inspected periodi-
cally and replaced if necessary at the intervals shown on
Schedule “B”.
WARNING!
The air cleaner can provide a measure of protection
in the case of engine backfire. Do not remove the air
cleaner unless such removal is necessary for repair or
maintenance. Make sure that no one is near the
engine compartment before starting the vehicle with
the air cleaner removed. Failure to do so can result in
serious personal injury.
Engine Fuel Filter
A plugged fuel filter can cause hard starting or limit the
speed at which a vehicle can be driven. Should an
excessive amount of dirt accumulate in the fuel tank,
frequent replacement of the fuel filter which is mounted
in the fuel tank may be necessary. See your dealer for
service.
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 serviced to assure
proper catalyst operation and prevent possible catalyst
damage. If the Malfunction Indicator light is flashing,
immediate service is required.
206 MAINTAINING YOUR VEHICLE

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 ex-
haust system. Do not park or operate your vehicle in
areas where your exhaust system can contact any-
thing 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 manufacturer’s specifica-
tions, should be obtained immediately.
To minimize the possibility of catalyst damage:
•Do not shut off the engine or interrupt the ignition
when the transaxle is in gear and the vehicle is in
motion.
•Do not try to start the engine by pushing or towing the
vehicle.
Engine Timing Belt
Replace the engine timing belt at the intervals described
in the appropriate maintenance schedule.
Crankcase Emission Control System
Proper operation of this system depends on freedom
from sticking or plugging due to deposits. As vehicle
mileage builds up, the PCV valve and passages may
accumulate deposits. If a valve is not working properly,
MAINTAINING YOUR VEHICLE 207
7

Saving Feature....................64,65,67
Belts, Drive........................... 205
Belts, Engine.......................... 207
Body Mechanism Lubrication.............. 211
Brake, Parking......................... 161
Brake System.......................162,218
Anti-Lock........................... 163
Fluid Check......................... 219
Hoses.............................. 219
Master Cylinder...................... 219
Warning Light....................... 117
Brake/Transmission Interlock...........157,158
Break-In Recommendations, New Vehicle...... 47
Brightness, Interior Lights................. 65
Bulb Replacement...................... 230
Bulbs, Light........................... 230
Calibration, Compass.................... 104
Capacities, Fluid....................... 236
Capacity, Cargo Weight.................. 179
Caps, Filler
Fuel............................... 177
Car Washes........................... 225Cargo Compartment
Capacity............................ 179
Luggage Carrier...................... 179
Carpeting............................. 225
Cassette Tape and Player Maintenance....... 144
Cassette Tape Player............... 119,126,144
Catalytic Converter..................... 206
CD Changer........................130,135
CD Player...................124,132,134,143
Central Door Locks...................... 15
Chains, Tire........................... 170
Changing A Flat Tire.................... 183
Charging System Light................... 116
Checking Your Vehicle For Safety............ 47
Child Restraint...................40,42,44,45
Child Restraint Tether Anchors...........43,44
Child Safety Locks....................... 16
Circuit Breakers........................ 228
Clean Air Gasoline...................... 175
Cleaning
Carpets............................. 225
Cloth.............................. 225
Glass.............................. 226
INDEX 267
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