2009 DODGE GRAND CARAVAN wheel

wheel(s) and engine power is reduced, to provide en-
hanced acceleration and stability. A feature of the TCS
functions similarly 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
the ESP is in the “Partial Off” mode.The “ESP/TCS Indicator Light” (in the instru-
ment cluster) will start to flash as soon as the
tires lose traction and the wheels begin to spin.
This indicates that the TCS is active. If the
indicator light flashes during acceleration, ease up on the
accelerator and apply as little throttle as possible. Be sure
to adapt your speed and driving to the prevailing road
conditions, and do not switch off the ESP or TCS. WARNING!

The TCS cannot prevent the natural laws of phys-
ics from acting on the vehicle, nor can it increase
the traction afforded.
The TCS cannot prevent accidents, including those
resulting from excessive speed in turns, or hydro-
planing. Only a safe, attentive, and skillful driver
can prevent accidents.
The capabilities of a TCS-equipped vehicle must
never be exploited in a reckless or dangerous
manner, which could jeopardize the user’s safety
or the safety of others.
Brake Assist System (BAS)
The Brake Assist System (BAS) is designed to optimize
the vehicle’s braking capability during emergency brak-
ing maneuvers. The system detects an emergency brak-
ing situation by sensing the rate and amount of brake 348 STARTING AND OPERATING

application, and then applies optimum pressure to the
brakes. This can help reduce braking distances. The BAS
complements the ABS. Applying the brakes very quickly
results in the best BAS assistance. To receive the benefit of
the system, you must apply continuous braking pressure
during the stopping sequence. Do not reduce brake pedal
pressure unless braking is no longer desired. Once the
brake pedal is released, the BAS is deactivated.WARNING!

The BAS cannot prevent the natural laws of phys-
ics from acting on the vehicle, nor can it increase
the traction afforded by prevailing road condi-
tions.
(Continued) WARNING! (Continued)

The BAS cannot prevent accidents, including
those resulting from excessive speed in turns,
driving on very slippery surfaces, or hydroplan-
ing. Only a safe, attentive, and skillful driver can
prevent accidents.
The capabilities of a BAS-equipped vehicle must
never be exploited in a reckless or dangerous
manner which could jeopardize the user’s safety
or the safety of others.
Electronic Stability Program (ESP)
The Electronic Stability Program (ESP) enhances direc-
tional control and stability of the vehicle under various
driving conditions. ESP corrects for over/under steering
of the vehicle by applying the brake of the appropriate
wheel to assist in counteracting the over/under steer
condition. Engine power may also be reduced to help the
vehicle maintain the desired path.
STARTING AND OPERATING 349 5

ESP uses sensors in the vehicle to determine the vehicle
path intended by the driver and compares it to the actual
path of the vehicle. When the actual path does not match
the intended path, ESP applies the brake of the appropri-
ate wheel to assist in counteracting the oversteer or
understeer condition.
Oversteer - when the vehicle is turning more than
appropriate for the steering wheel position.
Understeer - when the vehicle is turning less than
appropriate for the steering wheel position.
ESP On
This mode is the normal operating mode for ESP on
two-wheel drive vehicles. Whenever the vehicle is
started, the ESP system will be in this mode. This mode
should be used for most driving situations. ESP should
only be turned off for specific reasons as noted below. ESP Partial Off
This mode is entered by momentarily pressing the “ESP
OFF” switch (located in the center switch bank, next to
the hazard flasher switch).
When in the “Partial Off” mode, the TCS
portion of ESP, except for the “limited slip”
feature described in the TCS section, has been
disabled and the “ESP/TCS Indicator Light”
will be illuminated. When in the “Partial Off” mode, ESP
will operate without engine torque management. 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. To turn ESP on again, momentarily press the
“ESP OFF” switch. This will restore the normal “ESP On”
mode of operation. 350 STARTING AND OPERATING

WARNING! (Continued)
Temporary-use spare tires have limited tread life.
When the tread is worn to the tread wear indica-
tors, the temporary use spare tire needs to be
replaced.
Be sure to follow the warnings that apply to your
spare. Failure to do so could result in spare tire
failure and loss of vehicle control.
Do not install a wheel cover or attempt to mount a
conventional tire on the compact spare wheel, since the
wheel is designed specifically for the compact spare.
Do not install more than one compact spare tire/wheel
on the vehicle at any given time. CAUTION!
Because of the reduced ground clearance, do not take
your vehicle through an automatic car wash with the
compact spare installed. Damage to the vehicle may
result.
Tire Spinning
When stuck in mud, sand, snow, or ice conditions, do not
spin your vehicle’s wheels faster than 30 mph (48 km/h),
or continuously for longer than 30 seconds, without
stopping.
Refer to “Freeing A Stuck Vehicle” in Section 6 of this
manual for additional information.
364 STARTING AND OPERATING

WARNING!
Fast spinning tires can be dangerous. Forces gen-
erated by excessive wheel speeds may cause tire
damage or failure. A tire could explode and injure
someone.
Do not spin your vehicle’s wheels faster than
30 mph (48 km/h), or for more than 30 seconds
continuously, when you are stuck; and do not let
anyone near a spinning wheel, no matter what the
speed.
Tread Wear Indicators
Tread wear indicators are in the original-equipment tires
to help you in determining when your tires should be
replaced. These indicators are molded into the bottom of the tread
grooves. They will appear as bands when the tread depth
becomes 1/16 in (2 mm). When the tread is worn to the
tread wear indicators, the tire should be replaced. 1 — Worn Tire
2 —

New Tire STARTING AND OPERATING 365 5

WARNING!
Do not use a tire, wheel size or rating other than
that specified for your vehicle. Some combinations
of unapproved tires and wheels may change sus-
pension dimensions and performance characteris-
tics, resulting in changes to steering, handling, and
braking of your vehicle. This can cause unpredict-
able handling and stress to steering and suspen-
sion components. You could lose control and have
an accident resulting in serious injury or death.
Use only the tire and wheel sizes with load ratings
approved for your vehicle.
Never use a tire with a smaller load index or
capacity, than what was originally equipped on
your vehicle. Using a tire with a smaller load index
could result in tire overloading and failure. You
could lose control and have an accident.
(Continued) WARNING! (Continued)

Failure to equip your vehicle with tires having
adequate speed capability can result in sudden tire
failure and loss of vehicle control. CAUTION!
Replacing original tires with tires of a different size
may result in false speedometer and odometer read-
ings.
TIRE CHAINS
Use only compact chains, or other traction aids that meet
SAE type “Class S” specifications. Chains must be the
proper size for the vehicle, as recommended by the chain
manufacturer.
NOTE:
Do not use tire chains on a compact spare tire.
STARTING AND OPERATING 367 5

CAUTION!To avoid damage to your vehicle or tires, observe the
following precautions:
Use chains on P225/65R16 tires only. P225/65R17
tires do not provide adequate clearance.
Because of restricted chain clearance between tires
and other suspension components, it is important
that only chains in good condition are used. Bro-
ken chains can cause serious damage. Stop the
vehicle immediately if noise occurs that could
indicate chain breakage. Remove the damaged
parts of the chain before further use.
Do not exceed 45 mph (70 km/h).
Drive cautiously and avoid severe turns and large
bumps, especially with a loaded vehicle.
(Continued) CAUTION! (Continued)

Install chains on the front wheels as tightly as
possible and then retighten after driving about
0.5 mile (0.8 km).
Do not drive for prolonged periods of time on dry
pavement.
Observe the tire chain manufacturer’s instructions
on the method of installation, operating speed,
and conditions for use. Always use the lower
suggested operating speed of the chain manufac-
turer, if different from the speed recommended by
the vehicle manufacturer.
Always use the lower suggested operating speed if both
the chain manufacturer and vehicle manufacturer sug-
gest a maximum speed. This notice applies to all chain
traction devices, including link and cable (radial) chains.
368 STARTING AND OPERATING

The TPMS will continue to warn the driver of low tire
pressure as long as the condition exists, and will not turn
off until the tire pressure is at or above recommended
cold tire placard pressure. Once the low tire pressure
warning has been illuminated, the tire pressure must be
increased to the recommended cold tire placard pressure
in order for the “TPMS Warning Lamp” to be turned off.
The system will automatically update and the “TPMS
Warning Lamp” will extinguish once the updated tire
pressures have been received. The vehicle may need to be
driven for up to 20 minutes above 15 mph (25 km/h) to
receive this information.
For example, your vehicle may have a recommended
cold (parked for more than three hours) tire pressure of
35 psi (241 kPa). If the ambient temperature is 68°F (20°C)
and the measured tire pressure is 30 psi (207 kPa), a
temperature drop to 20°F (-7°C) will decrease the tire
pressure to approximately 26 psi (179 kPa). This tire
pressure is sufficiently low enough to turn on the “TPMSWarning Light.” Driving the vehicle may cause the tire
pressure to rise to approximately 30 psi (207 kPa), but the
“TPMS Warning Light” will still be on. In this situation,
the “TPMS Warning Light” will turn off only after the
tires have been inflated to the vehicle’s recommended
cold tire pressure value. 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 sealants or balance
beads if your vehicle is equipped with a TPMS, as
damage to the sensors may result. (Continued)
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