Airbag Deployment Sensors and Controls
Occupant Restraint Controller (ORC)
TheOccupant Restraint Controller System (ORC)is
part of a Federally regulated safety system required for
this vehicle.
The ORC determines if a frontal collision is severe
enough to require the airbags to inflate. Based on the
sensor signals, a central electronic Occupant Restraint
Controller (ORC) deploys the front airbags, side inflat-
able airbag curtains, seat-mounted side (Thorax) airbags,
and front seat belt pretensioners as required for each type
of impact.
The ORC monitors the readiness of the electronic parts of
the system whenever the ignition switch is in the START
or RUN positions. These include all of the items listed
above except the steering wheel and column, instrument
panel, and passenger knee bolsters. If the key is in the
OFF position, in the ACC position, or not in the ignition,
the airbags are not on and will not inflate.The ORC contains a backup power supply system that
will deploy the airbags even if the battery loses power or
becomes disconnected prior to deployment.
Also, the ORC turns on the AIRBAG warning
light in the instrument panel for 6 to 8 seconds
for a self-check when the ignition is first turned
on. After the self-check, the AIRBAG warning
light will turn off. If the ORC detects a malfunction in any
part of the system, it turns on the AIRBAG warning light
either momentarily or continuously. A single chime will
sound if the light comes on again after initial start up.
It also includes diagnostics that will illuminate the instru-
ment cluster airbag warning lamp if a malfunction is
noted. The diagnostics also record the nature of the
malfunction.
THINGS TO KNOW BEFORE STARTING YOUR VEHICLE 47
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turned ON. If the LED is not lit during starting, have it
checked. If the light stays on or comes on while driving,
have the system checked by an authorized dealer.
Defroster
Check operation by selecting the defrost mode and place
the blower control on high speed. You should be able to
feel the air directed against the windshield.
NOTE:If the defrost feature is not functioning, the
cause should be located and corrected immediately. The
windshield could fog up while driving and obscure your
visibility.
Periodic Safety Checks You Should Make Outside
The Vehicle
Tires
Examine tires for excessive tread wear or uneven wear
patterns. Check for stones, nails, glass, or other objects
lodged in the tread. Inspect tread and sidewall for cuts or
cracks. Check wheel nuts for tightness, and tires (includ-
ing spare) for proper pressure.
Lights
Have someone observe the operation of exterior lights
while you work the controls. Check turn signal and high
beam indicator lights on the instrument panel.
Fluid Leaks
Check area under vehicle after overnight parking for fuel,
engine coolant, oil, or other fluid leaks. In addition, if
gasoline fumes are detected or fuel, power steering fluid,
transmission fluid, or brake fluid leaks are suspected, the
cause should be located and corrected immediately.
THINGS TO KNOW BEFORE STARTING YOUR VEHICLE 65
2
Electrical Disturbances
Radio waves may pick up electrical disturbances during
transmission. They mainly affect the wave amplitude,
and thus remain a part of the AM reception. They
interfere very little with the frequency variations that
carry the FM signal.
AM Reception
AM sound is based on wave amplitude, so AM reception
can be disrupted by such things as lightning, power lines
and neon signs.
FM Reception
Because FM transmission is based on frequency varia-
tions, interference that consists of amplitude variations
can be filtered out, leaving the reception relatively clear,
which is the major feature of FM radio.
NOTE:The radio, steering wheel radio controls (if
equipped), and 6 disc CD/DVD changer (if equipped)
will remain active for up to 10 minutes after the ignition
switch has been turned off. Opening a vehicle front door
will cancel this feature.
SALES CODE REQ — AM/FM STEREO RADIO
AND 6–DISC CD/DVD CHANGER (MP3/WMA AUX
JACK)
NOTE:
The radio sales code is located on the lower
right side of your radio faceplate.
REQ Radio
UNDERSTANDING YOUR INSTRUMENT PANEL 159
4
Electronic Brake Control System –
ABS/TCS/BAS/ESP
....................221
▫Anti-Lock Brake System (ABS) —
If Equipped.........................221
▫Traction Control System (TCS) —
If Equipped.........................221
▫Brake Assist System (BAS) — If Equipped....221
▫Electronic Stability Program (ESP) —
If Equipped.........................222
Power Steering........................225
Driving On Slippery Surfaces.............226
▫Acceleration.........................226
▫Traction............................226
Tire Safety Information..................227
▫Tire Markings........................227
▫Tire Identification Number (TIN)..........230
▫Tire Loading And Tire Pressure...........231
Tires — General Information..............235
▫Tire Pressure.........................235
▫Tire Inflation Pressures.................236
▫Radial-Ply Tires......................238
▫Compact Spare Tire — If Equipped.........238
▫Limited Use Spare — If Equipped.........239
▫Tire Spinning........................240
▫Tread Wear Indicators..................240
▫LifeOfTire .........................241
▫Replacement Tires.....................241
▫Alignment And Balance.................242
Tire Pressure Monitoring System (TPMS) —
If Equipped
..........................243
▫Base Tire Pressure Monitoring System
(TPMS) Operation – If Equipped..........243
▫Premium System – If Equipped...........244
204 STARTING AND OPERATING
WARNING!
•BAS cannot prevent the natural laws of physics
from acting on the vehicle, nor can it increase
braking efficiency beyond that afforded by the
condition of the vehicle brakes and tires or the
traction afforded.
•The BAS cannot prevent accidents, including
those resulting from excessive speed in turns,
following another vehicle too closely, or hydro-
planing. Only a safe, attentive, and skillful driver
can prevent accidents.
•The capabilities of a BAS-equipped vehicle must
never be exploited in a reckless or dangerous
manner which could jeopardize the user ’s safety
or the safety of others.
Electronic Stability Program (ESP) — If Equipped
This system enhances directional control and stability of
the vehicle under various driving conditions. ESP cor-
rects for over/under steering of the vehicle by applyingthe brake of the appropriate wheel to assist in counter-
acting the over/under steer condition. Engine power
may also be reduced to help the vehicle maintain the
desired path. ESP uses sensors in the vehicle to determine
the vehicle path intended by the driver and compares it
to the actual path of the vehicle. When the actual path
does not match the intended path, ESP applies the brake
of the appropriate wheel to assist in counteracting the
oversteer or understeer condition
•Oversteer - when the vehicle is turning more than
appropriate for the steering wheel position.
•Understeer - when the vehicle is turning less than
appropriate for the steering wheel position.
ESP/TCS Indicator Light
The “ESP/TCS Indicator Light” located in the instrument
cluster, starts to flash as soon as the tires lose traction and
the ESP system becomes active. The “ESP/TCS Indicator
Light” also flashes when TCS is active. If the “ESP/TCS
Indicator Light” begins to flash during acceleration, ease
up on the accelerator and apply as little throttle as
possible. Be sure to adapt your speed and driving to the
prevailing road conditions.
222 STARTING AND OPERATING
POWER STEERING
The standard power steering system will give you good
vehicle response and increased ease of maneuverability
in tight spaces. The system will provide mechanical
steering capability if power assist is lost.
If for some reason the power assist is interrupted, it will
still be possible to steer your vehicle. Under these condi-
tions, you will observe a substantial increase in steering
effort, especially at very low vehicle speeds and during
parking maneuvers.
NOTE:Increased noise levels at the end of the steering
wheel travel are considered normal and do not indicate
that there is a problem with the power steering system.
Upon initial start-up in cold weather, the power
steering pump may make noise for a short amount of
time. This is due to the cold, thick fluid in the steering
system. This noise should be considered normal, and
does not in any way damage the steering system.
WARNING!
Continued operation with reduced power steering
assist could pose a safety risk to yourself and others.
Service should be obtained as soon as possible.
CAUTION!
Prolonged operation of the steering system at the
end of the steering wheel travel will increase the
steering fluid temperature and it should be avoided
when possible. Damage to the power steering pump
may occur.
STARTING AND OPERATING 225
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MAINTAINING YOUR VEHICLE
CONTENTS
2.4L Engine Compartment...............287
2.7L Engine Compartment...............288
3.5L Engine Compartment...............289
Onboard Diagnostic System — OBD II......290
▫Loose Fuel Filler Cap Message............290
Emissions Inspection And
Maintenance Programs
..................291
Replacement Parts.....................292
Dealer Service........................292
Maintenance Procedures.................293
▫Engine Oil..........................293
▫Spark Plugs.........................297▫Catalytic Converter....................298
▫Crankcase Emission Control System........299
▫Fuel Filter..........................299
▫Air Cleaner Element (Filter)..............299
▫Maintenance-Free Battery................300
▫Air Conditioner Maintenance.............301
▫Power Steering — Fluid Check............302
▫Front Suspension Ball Joints..............302
▫Body Lubrication.....................303
▫Windshield Wiper Blades................303
▫Windshield Washer Reservoir.............304
7
Refrigerant Recovery and Recycling
R-134a Air Conditioning Refrigerant is a hydrofluorocar-
bon (HFC) that is endorsed by the Environmental Pro-
tection Agency and is an ozone-saving product. How-
ever, the manufacturer recommends that air conditioning
service be performed by dealers or other service facilities
using recovery and recycling equipment.
NOTE:Use only manufacturer approved A/C System
Sealers, Stop Leak Products, Seal Conditioners, Compres-
sor Oil, or Refrigerants.
Power Steering — Fluid Check
Checking the power steering fluid level at a defined
service interval is not required. The fluid should only be
checked if a leak is suspected, abnormal noises are
apparent, and/or the system is not functioning as antici-
pated. Coordinate inspection efforts through a certified
DaimlerChrysler Dealership.
WARNING!
Fluid level should be checked on a level surface and
with the engine off to prevent injury from moving
parts and to insure accurate fluid level reading. Do
not overfill. Use only manufacturers recommended
power steering fluid.
If necessary, add fluid to restore to the proper indicated
level. With a clean cloth, wipe any spilled fluid from all
surfaces. Refer to Fluids, Lubricants, and Genuine Parts
for correct fluid types.
Front Suspension Ball Joints
There are two front suspension lower ball joints that are
permanently lubricated. Inspect these ball joints when-
ever under vehicle service is done. Damaged seals and
their corresponding potentially damaged ball joints must
be replaced.
302 MAINTAINING YOUR VEHICLE