2010 JEEP GRAND CHEROKEE fuel type

deploy the SABIC airbags, depending on severity and
type of collision. In these events, the ORC will deploy the
SABIC only on the impact side of the vehicle.
A quantity of non-toxic gas is generated to inflate the side
curtain airbag. The inflating side curtain airbag pushes
the outside edge of the headliner out of the way and
covers the window. The airbag inflates in about 30 ms
(about one-quarter of the time that it takes to blink your
eyes) with enough force to injure you if you are not belted
and seated properly, or if items are positioned in the area
where the side curtain airbag inflates. This especially
applies to children. The side curtain airbag is only about
3-1/2 in (9 cm) thick when it is inflated.
Because airbag sensors estimate deceleration over time,
vehicle speed and damage are not good indicators of
whether or not an airbag should have deployed.
NOTE:In a rollover the pretensioners and/or SABIC
airbags may deploy on both sides of the vehicle.Front and Side Impact Sensors
In front and side impacts, impact sensors aid the ORC in
determining appropriate response to impact events. Ad-
ditional sensors in the ORC determine the level of airbag
deployment and provide verification.
Enhanced Accident Response System
In the event of an impact causing airbag deployment, if
the communication network remains intact, and the
power remains intact, depending on the nature of the
event the ORC will determine whether to have the
Enhanced Accident Response System perform the follow-
ing functions:
•Cut off fuel to the engine.
•Flash hazard lights as long as the battery has power or
until the ignition key is turned off.
2
THINGS TO KNOW BEFORE STARTING YOUR VEHICLE 55

Extreme Cold Weather (Below20°F or29°C)
To ensure reliable starting at these temperatures, use of
an externally powered electric engine block heater (avail-
able from your authorized dealer) is recommended.
If Engine Fails to Start
WARNING!
•Never pour fuel or other flammable liquids into
the throttle body air inlet opening in an attempt to
start the vehicle. This could result in a flash fire
causing serious personal injury.
(Continued)
WARNING! (Continued)
•Do not attempt to push or tow your vehicle to get
it started. Vehicles equipped with an automatic
transmission 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 dis-
charged battery, booster cables may be used to
obtain a start from a booster battery or the battery
in another vehicle. This type of start can be dan-
gerous if done improperly. Refer to “Jump Start-
ing” in “What To Do In Emergencies” for further
information.
If the engine fails to start after you have followed the
“Normal Starting” or “Extreme Cold Weather” proce-
dures, it may be flooded. To clear any excess fuel, push
the accelerator pedal all the way to the floor and hold it.
Then, turn the ignition switch to the START position and
5
STARTING AND OPERATING 241

WARNING! (Continued)
•Unequal tire pressures from one side of the ve-
hicle to the other can cause the vehicle to drift to
the right or left.
•Always drive with each tire inflated to the recom-
mended cold tire inflation pressure.
Economy
Improper inflation pressures can cause uneven wear
patterns to develop across the tire tread. These abnormal
wear patterns will reduce tread life resulting in a need for
earlier tire replacement. Under-inflation also increases
tire rolling resistance and results in higher fuel
consumption.
Ride Comfort and Vehicle Stability
Proper tire inflation contributes to a comfortable ride.
Over-inflation produces a jarring and uncomfortable
ride. Both under-inflation and over-inflation affect thestability of the vehicle and can produce a feeling of
sluggish response or over responsiveness in the steering.
Unequal tire pressures can cause erratic and unpredict-
able steering response.
Unequal tire pressure from side to side may cause the
vehicle to drift left or right.
Tire Inflation Pressures
The proper cold tire inflation pressure is listed on the
driver’s side “B” Pillar.
The pressure should be checked and adjusted, as well as
inspected for signs of tire wear or visible damage, at least
once a month. Use a good quality pocket-type gauge to
check tire pressure. Do not make a visual judgement
when determining proper inflation. Radial tires may look
properly inflated even when they are under-inflated.
296 STARTING AND OPERATING

CAUTION!
•The TPMS has been optimized for the original
equipment tires and wheels. TPMS pressures have
been established for the tire size equipped on your
vehicle. Undesirable system operation or sensor
damage may result when using replacement
equipment that is not of the same size, type, and/or
style. Aftermarket wheels can cause sensor dam-
age. Do not use aftermarket tire sealants or balance
beads if your vehicle is equipped with a TPMS, as
damage to the sensors may result.
•After inspecting or adjusting the tire pressure
always reinstall the valve stem cap. This will
prevent moisture and dirt from entering the valve
stem, which could damage the Tire Pressure Moni-
toring Sensor.NOTE:
•The TPMS is not intended to replace normal tire care
and maintenance, or to provide warning of a tire
failure or condition.
•The TPMS should not be used as a tire pressure gauge
while adjusting your tire pressure.
•Driving on a significantly under-inflated tire causes
the tire to overheat and can lead to tire failure.
Under-inflation also reduces fuel efficiency and tire
tread life, and may affect the vehicle’s handling and
stopping ability.
•The TPMS is not a substitute for proper tire mainte-
nance, and it is the driver ’s responsibility to maintain
correct tire pressure using an accurate tire gauge, even
if under-inflation has not reached the level to trigger
illumination of the Tire Pressure Monitoring Telltale
Light.
306 STARTING AND OPERATING

ABS (Anti-Lock Brake System).............. 268
Adding Fuel ........................... 320
Adjustable Pedals ........................ 115
Air Cleaner, Engine (Engine Air Cleaner Filter) . . . 372
Air Conditioner Maintenance ............... 374
Air Conditioning ........................ 224
Air Conditioning, Operating Tips ............ 231
Air Conditioning Refrigerant ............... 375
Air Conditioning System .................. 224
Air Filter .............................. 372
Air Pressure, Tires ....................... 296
Airbag .............................. 46,54
Airbag Deployment ....................... 56
Airbag Light ................... 47,53,58,74,160
Airbag Maintenance ....................... 57
Airbag, Side .......................... 52,54
Airbag, Window (Side Curtain) ...........49,52,54
Alarm, Panic ............................ 23
Alarm (Security Alarm) .................19,161Alterations/Modifications, Vehicle
............. 9
Antenna, Satellite Radio ................... 215
Antifreeze (Engine Coolant) ................ 413
Anti-Lock Brake System (ABS) ............268,270
Anti-Lock Warning Light .................. 161
Anti-Theft System ....................... 161
Appearance Care ........................ 393
Arming Theft System (Security Alarm) ......... 19
Assist, Hill Start ........................ 278
Auto Down Power Windows ................ 31
Automatic Dimming Mirror ................. 81
Automatic Door Locks ..................... 29
Automatic Headlights .................... 102
Automatic Temperature Control (ATC) ......... 224
Automatic Transmission ................245,389
Adding Fluid ......................... 391
Fluid and Filter Changes ................. 389
Fluid Level Check ................... 390,391
Fluid Type ........................... 389
446 INDEX