2008 CHRYSLER ASPEN wheel torque

STARTING AND OPERATING
CONTENTS
mStarting Procedures.....................271
NAutomatic Transmission................271
NNormal Starting......................271
mEngine Block Heater ± If Equipped..........274
mAutomatic Transmission..................274
NBrake/Transmission Interlock System.......274
NGear Ranges.........................275
NOverdrive Operation...................277
NWhen To Use Tow/Haul Mode...........278NTorque Converter Clutch................279
mFour-Wheel Drive Operation...............280
NNV 140 Transfer Case Operating
Information/Precautions ± If Equipped......280
NNV 244 Generation II Transfer Case Operating
Information / Precautions...............280
NShifting Procedure - NV 244 Generation II
Transfer Case........................284
mDriving On Slippery Surfaces..............286
mDriving Through Water..................286
5

FOUR-WHEEL DRIVE OPERATION
NV 140 Transfer Case Operating
Information/Precautions ± If Equipped
The NV 140 is a single speed (4 HI range only) transfer
case which provides convenient full-time 4-wheel drive.
No driver interaction is required. This transfer case
divides engine torque almost evenly with 48 percent of
engine torque to the front axle and 52 percent of engine
torque to the rear axle.
Proper operation of 4-wheel drive vehicles depends on
tires of equal size, type and circumference on each wheel.
Any difference in tire size can cause damage to the
transfer case.
Because 4-wheel drive provides improved traction, there
is a tendency to exceed safe turning and stopping speeds.
Do not go faster than road conditions permit.4WD
Normal 4-Wheel Drive High Range - Employs inter-axle
differential. Allows front and rear wheels to rotate at
different speeds. All road surfaces.
NV 244 Generation II Transfer Case Operating
Information / Precautions
The NV 244 Generation II is an electric-shift transfer case
and is operated by the 4WD Control Switch, which is
located on the instrument panel.
The NV 244 Generation II transfer case provides four
mode positions - Normal 4-wheel drive (4WD) high
range, 4-wheel-drive lock (4WD LOCK), 4-wheel drive
low (4WD LOW) range, and NEUTRAL.
This transfer case is equipped with an inter-axle differ-
ential that allows driving the vehicle in the normal
all-wheel drive position (4WD) at all times on any given
road surface, including dry, hard-surfaced roads. The
4WD mode allows the front and rear wheels to rotate at
280 STARTING AND OPERATING

Traction Control System (TCS)
This system monitors the amount of wheel spin of each of
the driven wheels. If wheel spin is detected, brake
pressure is applied to the slipping wheel(s) and engine
power is reduced to provide enhanced acceleration and
stability. A feature of the TCS system functions similar to
a limited slip differential and controls the wheel spin
across a driven axle. If one wheel on a driven axle is
spinning faster than the other, the system will apply the
brake of the spinning wheel. This will allow more engine
torque to be applied to the wheel that is not spinning.
This feature remains active even if TCS and ESP are in the
ªPartial Offº mode. Refer to ªESP (Electronic Stability
Program)º in this Section. This brake pressure modula-
tion transfers drive torque from slipping to non-slipping
wheels to provide optimal forward traction.
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 applies the
appropriate brake and may reduce engine power to
lessen the chance that wheel lift will occur. ERM will only
intervene during very severe or evasive driving maneu-
vers.
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.
STARTING AND OPERATING 297
5

4WD/4WD LOCK or 2WD Models
ON
This is the normal operating mode for ESP in 4WD LOCK
and in 2WD vehicles. Whenever the vehicle is started or
the transfer case (if equipped) is shifted from 4WD LOW
or NEUTRAL back to 4WD LOCK, the ESP system will be
in this mode. This mode should be used for almost all
driving situations. ESP should only be turned to ªPartial
Offº for specific reasons as noted below.
This mode is entered by momentarily
depressing the ESP OFF Control
Switch. When in ªPartial Offº mode,
the engine management portion of
ESP has been desensitized, the thresh-
olds for ESP activation are raised, and
the ªESP/TCS Indicator Lightº will be
illuminated. This mode is intended to
be used if the vehicle is in deep snow,sand or gravel conditions and more wheel spin than ESP
would normally allow is required to gain traction. Trailer
Sway Control (TSC) is not available when the system is in
the9Partial Off9mode. To turn ESP on again, momen-
tarily depress the ESP OFF Control Switch. This will
restore the normal ON mode of operation. ESP always
operates under braking, even with the switch in the OFF
position.
WARNING!
In the ªPartial Offº mode, the engine torque reduc-
tion and stability features are desensitized. There-
fore, the enhanced vehicle stability offered by ESP is
unavailable.
Partial Off
300 STARTING AND OPERATING

NOTE:To improve the vehicle's traction when driving
with snow chains, or starting off in deep snow, sand or
gravel, it may be desirable to switch to the ªPartial Offº
mode by pressing the ESP Control Switch. Once the
situation requiring ESP to be switched to the ªPartial Offº
mode is overcome, turn ESP on by momentarily depress-
ing the ESP Control Switch. This may be done with the
vehicle in motion.
4WD LOW Range
Partial Off
This is the normal operating mode for ESP in 4WD LOW.
Whenever the vehicle is started in 4WD LOW or the
transfer case (if equipped) is shifted from 4WD LOCK or
NEUTRAL to 4WD LOW, the ESP system will be in this
mode. In 4WD LOW, ESP function is desensitized until
the vehicle reaches a speed of 30 mph (48 km/h). At 30
mph (48 km/h) the normal ESP stability function returns
and the ESP/TCS Indicator Light turns off. When thevehicle speed drops below 25 mph (40 km/h) the ESP
system goes back to Partial Off. ESP is desensitized at low
vehicle speeds in 4WD LOW so that it will not interfere
with off road driving but ESP function returns to provide
the stability feature at speeds above 30 mph (48 km/h).
The ABS is in a special Off Road mode that allows wheels
to lock at lower speeds if gravel is detected to shorten
stopping distances.
NOTE:When the vehicle is in 4WD LOW, a feature of
the ESP system remains active whether the ESP is on or
off. This feature functions similar to a limited slip differ-
ential and controls the wheel spin across an axle. If one
wheel on an axle is spinning faster than the other, the
system will apply the brake of the spinning wheel and
allow more engine torque to be applied to the wheel that
is not spinning.
STARTING AND OPERATING 301
5

WARNING!
Raising the vehicle higher than necessary can make
the vehicle unstable and cause an accident. It could
slip off the jack and hurt someone near it. Raise the
vehicle only enough to remove the tire.
5. Remove the wheel nuts and pull the wheel off. Install
the spare wheel and wheel nuts with the cone shaped end
of the nuts toward the wheel. Lightly tighten the nuts. To
avoid risk of forcing the vehicle off the jack, do not fully
tighten the nuts until the vehicle has been lowered.
NOTE:Do not oil wheel studs. For chrome wheels, do
not substitute with chrome plated wheel nuts.
6. Using the wheel wrench, finish tightening the nuts in
a crisscross pattern. Correct nut tightness is 135   10 ft lbs
(183   14 N´m) dynamic torque. If in doubt about thecorrect tightness, have them checked with a torque
wrench by your authorized dealer or at a service station.WARNING!
A loose tire or jack thrown forward in a collision or
hard stop could injure someone in the vehicle. Al-
ways stow the jack, tools and the extra tire and wheel
in the places provided.
7. Remove wheel blocks. Do not install chrome or alu-
minum wheel center caps on the spare wheel. This may
result in cap damage.
8. Lower the jack to its fully closed position. Stow the
replaced tire, jack, and tools as previously described.
9. Adjust the tire pressure when possible.
NOTE:Do not oil wheel studs. For chrome wheels, do
not substitute with chrome plated wheel nuts.
374 WHAT TO DO IN EMERGENCIES

Tire Markings.......................... 303
Tire Safety Information.................... 303
Tires ............................77,312,455
Aging (Life of Tires).................... 318
Air Pressure.......................... 312
Alignment........................... 320
Chains.............................. 321
Changing............................ 369
Compact Spare........................ 316
General Information.................... 312
High Speed.......................... 315
Inflation Pressures..................... 313
Jacking............................. 370
Life of Tires.......................... 318
Load Capacity.....................308,309
Pressure Monitor System (TPMS)........... 324
Pressure Warning Light.................. 211
Quality Grading....................... 455
Radial.............................. 315Replacement......................... 319
Rotation............................. 323
Safety...........................303,312
Sizes............................... 305
Snow Tires........................... 322
Spare Tire........................... 369
Spinning............................ 317
Tread Wear Indicators................... 318
Wheel Mounting....................... 370
Wheel Nut Torque..................... 374
Tongue Weight/Trailer Weight.............. 351
Torque Converter Clutch.................. 279
Tow Hooks, Emergency................... 378
Towing............................... 345
24-Hour Towing Assistance............... 101
Disabled Vehicle....................... 379
Guide.............................. 351
Recreational.......................... 360
Weight.............................. 351
474 INDEX

Weight Load Carrying.................... 342
Wheel Alignment and Balance............... 320
Wheel and Wheel Trim.................... 416
Wheel and Wheel Trim Care................ 416
Wheel Changing........................ 369
Wheel Mounting........................ 370
Wheel Nut Torque....................... 374
Wind Buffeting......................... 184
Window Fogging........................ 262
Windows.............................. 34
Power............................... 34Windshield Defroster..................251,257
Windshield Washers................151,153,401
Fluid.......................151,384,385,401
Windshield Wiper Blades.................. 400
Windshield Wipers....................... 151
Wiper Blade Replacement.................. 400
Wiper, Rear............................ 264
Wipers, Intermittent...................... 152
Wrecker Towing......................... 379
YES EssentialstFabric Cleaning Procedure...... 416
INDEX 477
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