engine DODGE NITRO 2009 1.G Owner's Guide

NOTE:The air conditioning compressor operates in
both MIX and DEFROST or a blend of these modes even
if the fan switch is not in the A/C position. This dehu-
midifies the air to help dry the windshield. To improve
fuel economy, use these modes only when necessary.
Recirculation Control
Press the mode control knob to activate the
recirculation mode. A lamp in the knob will
illuminate when you are in recirculate mode.
Press the knob again to deactivate the system.
Only use the recirculation mode to temporarily block out
any outside odors, smoke, or dust and to cool the interior
rapidly upon initial start up in very hot or humid
weather.
NOTE:Continuous use of the recirculation mode may
make the inside air stuffy and window fogging may
occur. Extended use of this mode is not recommended.In cold or damp weather, the use of the recirculation
mode will cause windows to fog on the inside because of
moisture build up inside the vehicle. For maximum
defogging, select the Outside Air position.
NOTE:Recirculation mode will not operate in FLOOR,
MIX or DEFROST modes.Air Conditioning Operation
Press the temperature control knob to activate the
air conditioning mode. A lamp will illuminate
when the air conditioning system is engaged.
Press the knob again to deactivate the system.
NOTE:The air conditioning compressor will not engage
until the engine has been running for about 10 seconds.
UNDERSTANDING YOUR INSTRUMENT PANEL 251
4

Operating Tips
Window Fogging
Windows will fog on the inside when the humidity inside
the vehicle is high. This often occurs in mild or cool
temperatures when it’s rainy or humid. In most cases,
turning on the air conditioning (pressing the “Snow-
flake” button) will clear the fog. Adjust the temperature
control, air direction, and blower speed to maintain
comfort.
As the temperature gets colder, it may be necessary to
direct air onto the windshield. Adjust the temperature
control and blower speed to maintain comfort. Higher
blower speeds will reduce fogging. Interior fogging on
the windshield can be quickly removed by selecting the
DEFROST mode.
Regular cleaning of the inside of the windows with a
non-filming cleaning solution (vinegar and water works
very well) will help prevent contaminants (cigarettesmoke, perfumes, etc.) from sticking to the windows.
Contaminants increase the rate of window fogging.Summer Operation
Air conditioned vehicles must be protected with a high
quality antifreeze coolant during summer to provide
proper corrosion protection and to raise the boiling point
of the coolant for protection against overheating. A 50%
concentration is recommended. Refer to Fluids and
Genuine Parts in Section 7 for the proper coolant type.
When using the air conditioner in extremely heavy traffic
in hot weather especially when towing a trailer, addi-
tional engine cooling may be required. If this situation is
encountered, operate the transmission in a lower gear to
increase engine RPM, coolant flow and fan speed. When
stopped in heavy traffic, it may be necessary to shift into
NEUTRAL and depress the accelerator slightly for fast
idle operation to increase coolant flow and fan speed.
252 UNDERSTANDING YOUR INSTRUMENT PANEL

STARTING AND OPERATING
CONTENTS
Starting Procedures.................... 259
▫Normal Starting..................... 259
▫Extreme Cold Weather (Below –20°F Or
–29°C)............................ 259
▫If Engine Fails To Start................. 260
▫After Starting....................... 262
Engine Block Heater — If Equipped......... 262
Automatic Transmission................. 262
▫Brake/Transmission Interlock System...... 263▫Brake/Transmission Interlock Manual
Override........................... 264
▫4–Speed Automatic Transmission (3.7L
Engine)............................ 265
▫5–Speed Automatic Transmission (4.0L
Engine)............................ 270
▫Gear Ranges........................ 271
Four-Wheel Drive Operation — If Equipped . . . 275
▫MP 143 Single-Speed Part-Time
Transfer Case....................... 275
5

Tires — General Information.............. 305
▫Tire Pressure........................ 305
▫Tire Inflation Pressures................. 306
▫Tire Pressures For High Speed Operation.... 308
▫Radial-Ply Tires...................... 308
▫Compact Spare Tire — If Equipped........ 308
▫Limited-Use Spare — If Equipped......... 309
▫Tire Spinning....................... 310
▫Tread Wear Indicators................. 311
▫Life Of Tire......................... 311
▫Replacement Tires.................... 312
Tire Chains.......................... 314
Tire Rotation Recommendations............ 315Tire Pressure Monitor System (TPMS)....... 316
▫Base System........................ 319
▫Premium System — If Equipped.......... 321
▫General Information................... 326
Fuel Requirements..................... 326
▫3.7L Engine......................... 326
▫4.0L Engine......................... 327
▫Reformulated Gasoline................. 327
▫Gasoline/Oxygenate Blends............. 328
▫E-85 Usage In Non-Flex Fuel Vehicles...... 328
▫MMT In Gasoline.................... 329
▫Materials Added To Fuel............... 329
▫Fuel System Cautions.................. 330
STARTING AND OPERATING 257
5

STARTING PROCEDURES
Before starting your vehicle, adjust your seat, adjust both
inside and outside mirrors, and fasten your seat belts.
WARNING!
Do not leave children or animals inside parked
vehicles in hot weather. Interior heat build up may
cause serious injury or death.
Start the engine with the shift lever in the NEUTRAL or
PARK position. Apply the brake before shifting to any
driving range.
Normal Starting
NOTE:Normal starting of either a cold or a warm
engine is obtained without pumping or depressing the
accelerator pedal.Turn the ignition switch to the START position and
release when the engine starts. If the engine fails to start
within 10 seconds, turn the ignition switch to the LOCK
position, wait 10 to 15 seconds, then repeat the normal
starting procedure.
Tip Start Feature
Turn the ignition switch to START position and release it
as soon as the starter engages. The starter motor will
continue to run, but will automatically disengage itself
when the engine is running. If the engine fails to start, the
starter will disengage automatically in 10 seconds. If this
occurs, turn the ignition switch to the LOCK position,
wait 10 to 15 seconds, then repeat the normal starting
procedure.
Extreme Cold Weather (below –20°F or –29°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.
STARTING AND OPERATING 259
5

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 Section 6 of
this manual for proper jump starting procedures
and follow them carefully.
260 STARTING AND OPERATING

CAUTION!
To prevent damage to the starter, do not crank the
engine for more than 15 seconds at a time. Wait 10 to
15 seconds before trying again.
If the engine has been flooded, it may start to run, but not
have enough power to continue running when the key is
released. If this occurs, continue cranking with the accel-
erator pedal pushed all the way to the floor. Release the
accelerator pedal and the key once the engine is running
smoothly.
If the engine shows no sign of starting after two 15 sec-
ond periods of cranking with the accelerator pedal held
to the floor, repeat the “Normal Starting” or “Extreme
Cold Weather” procedures.With Tip Start
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
release it as soon as the starter engages. The starter motor
will disengage automatically in 10 seconds. Once this
occurs, release the accelerator pedal, turn the ignition
switch to the LOCK position, wait 10 to 15 seconds, then
repeat the normal starting procedure.
CAUTION!
To prevent damage to the starter, wait 10 to 15 sec-
onds before trying again.
STARTING AND OPERATING 261
5

After Starting
The idle speed will automatically decrease as the engine
warms up.
WARNING!
Do not leave children or animals inside parked
vehicles in hot weather. Interior heat buildup may
cause serious injury or death.
ENGINE BLOCK HEATER — IF EQUIPPED
The engine block heater warms the engine, and permits
quicker starts in cold weather. Connect the cord to a
standard 110-115 Volt AC electrical outlet with a
grounded three-wire extension cord.
•The engine block heater cord is found under the hood
clipped to the heater line on the left side of the engine.
WARNING!
Remember to disconnect the cord before driving.
Damage to the 110-115 Volt AC electrical cord could
cause electrocution.
Use the heater when temperatures below 0 °F (-18 °C) are
expected to last for several days.
AUTOMATIC TRANSMISSION
CAUTION!
Damage to the transmission may occur if the follow-
ing precautions are not observed:
•Shift into PARK only after the vehicle has come to
a complete stop.
(Continued)
262 STARTING AND OPERATING

CAUTION! (Continued)
•Shift into or out of REVERSE only after the
vehicle has come to a complete stop and the engine
is at idle speed.
•Do not shift from REVERSE, PARK, or NEUTRAL
into any forward gear when the engine is above
idle speed.
•Before shifting into any gear, make sure your foot
is firmly on the brake pedal.
WARNING!
It is dangerous to move the shift lever out of PARK or
NEUTRAL if the engine speed is higher than idle
speed. If your foot is not firmly on the brake pedal,
the vehicle could accelerate quickly forward or in
REVERSE. You could lose control of the vehicle and
hit someone or something. Only shift into gear when
the engine is idling normally and when your foot is
firmly on the brake pedal.
Brake/Transmission Interlock System
This system prevents you from moving the shift lever out
of PARK and into any gear unless the brake pedal is
pressed. Always depress thebrake pedal first,before
moving the shift lever out of PARK.
STARTING AND OPERATING 263
5

Brake/Transmission Interlock Manual Override
Your vehicle may be equipped with a shift lock manual
override. The manual override may be used in the event
that the shift lever should fail to move from PARK with
the key in the ON position and the brake pedal de-
pressed. To operate the shift lock manual override, per-
form the following steps:
1. Turn the key to the ON position but do not start the
engine.
2. Firmly set the parking brake.
3. Using a flat blade screwdriver, carefully remove the
shift lock manual override cover which is located on the
PRNDL bezel.
4. Depress and maintain firm pressure on the brake
pedal.
5. Using the screwdriver, reach into the manual override
opening. Press and hold the shift lock lever down.6. Move the shift lever into the NEUTRAL position.
7. The vehicle may then be started in NEUTRAL.
Have your vehicle inspected by your local authorized
dealer if the shift lock manual override has been used.
Interlock Manual Override
264 STARTING AND OPERATING