2010 JEEP GRAND CHEROKEE power steering

The ORC contains a backup power supply system that
may deploy the airbags even if the battery loses power or
it becomes disconnected prior to deployment.Also, the ORC turns on the Airbag Warning
Light in the instrument panel for approxi-
mately six to eight 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 startup.
It also includes diagnostics that will illuminate the instru-
ment cluster Airbag Warning Light if a malfunction is
noted. The diagnostics also record the nature of the
malfunction.WARNING!
Ignoring the Airbag Warning Light in your instru-
ment panel could mean you won’t have the airbags to
protect you in a collision. If the light does not come
on, stays on after you start the vehicle, or if it comes
on as you drive, have the airbag system checked right
away.
Driver and Passenger Airbag Inflator Units
The Driver and Passenger Airbag/Inflator Units are
located in the center of the steering wheel and the right
side of the instrument panel. When the ORC detects a
collision requiring the airbags, it signals the inflator units.
A large quantity of non-toxic gas is generated to inflate
the Advanced Front Airbags. Different airbag inflation
rates are possible, based on the collision type and sever-
ity. The steering wheel hub trim cover and the upper
right side of the instrument panel separate and fold out
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THINGS TO KNOW BEFORE STARTING YOUR VEHICLE 53

Airbag Warning Light
The light should come on and remain on for six to eight
seconds as a bulb check when the ignition switch is first
turned ON. If the light is not lit during starting, see your
authorized dealer. If the light stays on, flickers, or comes
on while driving, have the system checked by an autho-
rized 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. See your
authorized dealer for service if your defroster is
inoperable.
Periodic Safety Checks You Should Make Outside
the Vehicle
Tires
Examine tires for excessive tread wear and uneven wear
patterns. Check for stones, nails, glass, or other objectslodged in the tread. Inspect the tread and sidewall for
cuts and cracks. Check the wheel nuts for tightness.
Check the tires (including 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.
Door Latches
Check for positive closing, latching, and locking.
Fluid Leaks
Check area under vehicle after overnight parking for fuel,
engine coolant, oil, or other fluid leaks. Also, if gasoline
fumes are detected or if fuel, power steering fluid, or
brake fluid leaks are suspected, the cause should be
located and corrected immediately.
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THINGS TO KNOW BEFORE STARTING YOUR VEHICLE 73

STARTING AND OPERATING
CONTENTS
Starting Procedures .................... 238
▫ Normal Starting ..................... 238
▫ Extreme Cold Weather
(Below 20°F Or 29°C)............... 239
▫ If Engine Fails To Start ................ 239
▫ After Starting ....................... 240
 Automatic Transmission ................. 240
▫ Key Ignition Park Interlock ............. 241
▫ Brake/Transmission Shift Interlock System . . 241 ▫
Brake/Transmission Interlock Manual
Override .......................... 241
▫ Five–Speed Automatic Transmission ....... 242
▫ Gear Ranges ........................ 243
▫ Rocking The Vehicle .................. 244
 AutoStick .......................... 245
▫ Operation ......................... 246
▫ General Information .................. 247
 Power Steering ....................... 248
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▫Power Steering Fluid Check ............. 249
 Parking Brake ........................ 250
 Anti-Lock Brake System ................. 252
 Electronic Brake Control System ........... 255
▫ Anti-Lock Brake System (ABS) ........... 255
▫ Traction Control System (TCS) ........... 255
▫ Brake Assist System (BAS) .............. 256
▫ Electronic Roll Mitigation (ERM) ......... 257
▫ Electronic Stability Program (ESP) ........ 257
▫ Trailer Sway Control (TSC) ............. 260
▫ ESP/BAS Warning Light And ESP/TCS
Indicator Light ...................... 260
 Tire Safety Information ................. 262 ▫
Tire Markings ....................... 262
▫ Tire Identification Number (TIN) ......... 266
▫ Tire Terminology And Definitions ......... 267
▫ Tire Loading And Tire Pressure .......... 268
 Tires — General Information ............. 272
▫ Run Flat Tires ....................... 272
▫ Tire Pressure ....................... 272
▫ Tire Inflation Pressures ................ 274
▫ Tire Pressures For High Speed Operation . . . 275
▫ Radial-Ply Tires ..................... 275
▫ Tire Spinning ....................... 276
▫ Tread Wear Indicators ................. 276
▫ Life Of Tire ........................ 277
236 STARTING AND OPERATING

•The transmission will automatically shift up when
maximum engine speed is reached while AutoStickis
engaged.
•Transmission shifting will be more noticeable when
AutoStick is engaged.
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 steer-
ing 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 it
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.
248 STARTING AND OPERATING

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.
Power Steering Fluid Check
The power steering system requires the use of MOPAR
Hydraulic System Power Steering Fluid or equivalent,
which meets Chrysler Material Standard MS-10838.
CAUTION!
Do not use chemical flushes in your power steering
system as the chemicals can damage your power
steering components. Such damage is not covered by
the New Vehicle Limited Warranty.
WARNING!
Do not use Automatic Transmission Fluid (ATF), or
other types of power steering fluids, when servicing
the power steering system of this vehicle. Damage to
the power steering system can result from the use of
the wrong power steering fluid.
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 an autho-
rized dealer.
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STARTING AND OPERATING 249

WARNING!
Fluid level should be checked on a level surface and
with the engine off to prevent injury from moving
parts and to ensure 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.
PARKING BRAKE
Before leaving the vehicle, make sure that the parking
brake is fully applied and place the shift lever in the
PARK position.
The parking brake lever is located in the center console.
To apply the parking brake, pull the lever up as firmly as possible. To release the parking brake, pull the lever up
slightly, press the center button, then lower the lever
completely.
When the parking brake is applied with the ignition
switch in the ON position, the “Brake Warning Light” in
the instrument cluster will illuminate.
Parking Brake
250 STARTING AND OPERATING

Electronic Roll Mitigation (ERM)
This system anticipates the potential for wheel lift by
monitoring the driver ’s steering wheel input and the
speed of the vehicle. When ERM determines that the rate
of change of the steering wheel angle and vehicles speed
are sufficient to potentially cause wheel lift, it then
applies the appropriate brake and may also reduce
engine power to lessen the chance that wheel lift will
occur. ERM will only intervene during very severe or
evasive driving maneuvers.
ERM can only reduce the chance of wheel lift occurring
during severe or evasive driving maneuvers. It cannot
prevent wheel lift due to other factors such as road
conditions, leaving the roadway or striking objects or
other vehicles.WARNING!
Many factors, such as vehicle loading, road condi-
tions and driving conditions, influence the chance
that wheel lift or rollover may occur. ERM cannot
prevent all wheel lift or rollovers, especially those
that involve leaving the roadway or striking objects
or other vehicles. Only a safe, attentive, and skillful
driver can prevent accidents. The capabilities of an
ERM-equipped vehicle must never be exploited in a
reckless or dangerous manner which could jeopar-
dize the user’s safety or the safety of others.
Electronic Stability Program (ESP)
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 applying
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STARTING AND OPERATING 257