2009 JEEP COMMANDER fuel type

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.
•Do not attempt to push or tow your vehicle to get it
started. Vehicles equipped with an automatic trans-
mission 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 a
booster battery or the battery in another vehicle.
This type of start can be dangerous if done improp-
erly. Refer to Section 6 for proper jump-starting
procedures and follow them carefully.
Clearing A Flooded Engine - Using ENGINE
START/STOP Button
If the engine fails to start after you have followed the
“Normal Starting” or “Extreme Cold Weatherprocedures, it
may be flooded. To clear any excess fuel, press and hold the
accelerator pedal all the way to the floor with your right
foot, and then press and release the ENGINE START/STOP
button once. The starter motor will engage automatically,
run for 10 seconds, and then disengage. Once this occurs,
release the accelerator pedal and the brake pedal, wait 10 to
15 seconds, then repeat the normal starting procedure.
Clearing A Flooded Engine - Using Fob With Integrated
Key
If the engine fails to start after you have followed the
“Normal Starting” or “Extreme Cold Weather” procedures,
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 release it
as soon as the starter engages. The starter motor will
disengage automatically in 10 seconds. Once this occurs,
STARTING AND OPERATING 295
5

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. Underinflation also increases tire
rolling resistance and results in higher fuel consumption.
Ride Comfort and Vehicle Stability
Proper tire inflation contributes to a comfortable ride.
Overinflation produces a jarring and uncomfortable ride.
Both underinflation and overinflation affect the stability
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 underinflated.
CAUTION!
After inspecting or adjusting the tire pressure, al-
ways reinstall the valve stem cap (if equipped). This
will prevent moisture and dirt from entering the
valve stem, which could damage it.
STARTING AND OPERATING 347
5

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 maintenance,
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.
•Seasonal temperature changes will affect tire pressure,
and the TPMS will monitor the actual tire pressure in
the tire.
358 STARTING AND OPERATING

For best results, a refueling pattern that avoids alternat-
ing between E-85 and unleaded gasoline is recom-
mended.
When you do switch fuel types it is recommended that:
•you do not add less than 5 gal (19 L) when refueling
•you drive the vehicle immediately after refueling for at
least 5 mi (8 km)
Observing these precautions will avoid possible hard
starting and/or significant deterioration in drivability
during warm up.
NOTE:Use seasonally adjusted E-85 fuel (ASTM
D5798). With non-seasonally adjusted E-85 fuel, you may
experience hard starting and rough idle following start
up even if the above recommendations are followed,
especially when the ambient temperature is below 32°F
(0°C).
Selection Of Engine Oil For Flexible Fuel Vehicles
(E-85) and Gasoline Vehicles
Whether operating the vehicle on an E-85 ethanol fuel or
unleaded gasoline, the engine oil requirements are the
same. Refer to “Maintenance Procedures” in Section 7 of
this manual for the proper quality and viscosity engine
oil.
Starting
The characteristics of E-85 fuel make it unsuitable for use
when ambient temperatures fall below 0°F (-18°C). In the
range of 0° to 32°F (-18° to 0°C), you may experience an
increase in the time it takes for your engine to start, and
a deterioration in drivability (sags and/or hesitations)
until the engine is fully warmed up.
Cruising Range
Because E-85 fuel contains less energy per gallon/liter
than gasoline, you will experience an increase in fuel
374 STARTING AND OPERATING

Engine Oil Selection
For best performance and maximum protection for all
engines under all types of operating conditions, the
manufacturer recommends engine oils that are API Cer-
tified and meet the requirements of Chrysler Material
Standard MS-6395.
American Petroleum Institute (API) Engine Oil
Identification Symbol
This symbol means that the oil has
been certified by the American
Petroleum Institute (API). The
manufacturer only recommends
API Certified engine oils.
Engine Oil Viscosity
SAE 5W-20 engine oil is recommended for all operating
temperatures. This engine oil improves low temperature
starting and vehicle fuel economy.
The engine oil filler cap also shows the recommended
engine oil viscosity for your vehicle. For information on
engine oil filler cap location, refer to “Engine Compart-
ment” in this section.
NOTE:Vehicles equipped with a 5.7L engine must use
SAE 5W-20 oil. Failure to do so may result in improper
operation of the Multiple Displacement System (MDS).
Refer to “Multi-Displacement System” in Section 5 for
more details.
Lubricants, which do not have both the engine oil certi-
fication mark and the correct SAE viscosity grade num-
ber, should not be used.
MAINTAINING YOUR VEHICLE 423
7

ABS (Anti-Lock Brake System).............. 320
Adding Fuel........................... 375
Adjustable Pedals....................... 152
Air Cleaner, Engine (Engine Air Cleaner Filter) . . . 424
Air Conditioner Maintenance............... 426
Air Conditioning........................ 274
Air Conditioning, Operating Tips............ 283
Air Conditioning, Rear Zone................ 281
Air Conditioning Refrigerant............... 427
Air Conditioning System.................. 274
Air Filter.............................. 424
Air Pressure, Tires....................... 347
Airbag................................ 52
Airbag Deployment....................... 59
Airbag Light.......................61,75,193
Airbag Maintenance....................... 61
Alarm, Panic............................ 24
Alarm (Security Alarm).................20,194
Alterations/Modifications, Vehicle............. 9Antenna, Satellite Radio................... 264
Antifreeze (Engine Coolant)................ 465
Anti-Lock Brake System (ABS)............320,323
Anti-Lock Warning Light.................. 193
Anti-Theft System....................... 194
Appearance Care........................ 444
Arming Theft System (Security Alarm)......... 20
Assist, Hill Start........................ 332
Assistance Towing....................... 102
Auto Down Power Windows................ 35
Automatic Dimming Mirror................. 84
Automatic Door Locks..................... 30
Automatic Headlights.................... 141
Automatic Temperature Control (ATC)......... 274
Automatic Transmission................299,440
Adding Fluid......................... 442
Fluid and Filter Changes................. 440
Fluid Level Check..................... 441
Fluid Type........................... 440
496 INDEX