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STARTING AND OPERATING 99
In the event of a momentary problem, the
transmission can be reset to regain all forward
gears by performing the following steps:
1. Stop the vehicle.
2. Shift the transmission into PARK (P), if
possible. If not, shift the transmission to
NEUTRAL.
3. Push and hold the ignition until the engine
turns off.
4. Wait approximately 30 seconds.
5. Restart the engine.
6. Shift into the desired gear range. If the
problem is no longer detected, the
transmission will return to normal
operation.
NOTE:
Even if the transmission can be reset, we
recommend that you visit an authorized dealer
at your earliest possible convenience. An autho-
rized dealer has diagnostic equipment to
assess the condition of your transmission. If the
transmission cannot be reset, authorized dealer
service is required.
Torque Converter Clutch
A feature designed to improve fuel economy
has been included in the automatic
transmission on your vehicle. A clutch within the
torque converter engages automatically at
calibrated speeds. This may result in a slightly
different feeling or response during normal
operation in the upper gears. When the vehicle
speed drops or during some accelerations, the
clutch automatically disengages.
NOTE:
The torque converter clutch will not engage until
the engine and/or transmission is warm
(usually after 1 to 3 miles [2 to 5 km] of driving).
Because the engine speed is higher when the
torque converter clutch is not engaged, it may
seem as if the transmission is not shifting prop-
erly when the vehicle is cold. This is normal. The
torque converter clutch will function normally
once the powertrain is sufficiently warm.
FOUR-WHEEL DRIVE OPERATION — IF
EQUIPPED
JEEP ACTIVE DRIVE
Your vehicle may be equipped with a Power
Transfer Unit (PTU). This system is automatic
with no driver inputs or additional driving skills
required. Under normal driving conditions, the
front wheels provide most of the traction. If the
front wheels begin to lose traction, power is
shifted automatically to the rear wheels. The
greater the front wheel traction loss, the greater
the power transfer to the rear wheels.
Additionally, on dry pavement under heavy
throttle input (where one may have no wheel
spin), torque will be sent to the rear in a
preemptive effort to improve vehicle launch and
performance characteristics.
Four Wheel Drive (4x4)
The four-wheel drive (4WD) is fully automatic in
normal driving mode.
NOTE:
It is not possible to carry out the change of
mode when the vehicle exceeds the speed of
75 mph (120 km/h).
CAUTION!
All wheels must have the same size and type
tires. Unequal tire sizes must not be used.
Unequal tire size may cause failure of the
power transfer unit.
4
21_MP_OM_EN_USC_t.book Page 99
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