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 properly
when the vehicle is cold. This is normal. The torque
converter clutch will function normally once the pow-
ertrain 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.
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.
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).
Enabling Four Wheel Drive (4x4)
The buttons for the activation of four wheel drive are
located on the device Selec-Terrain and allow you to select
the following:
• 4WD LOCK
• 4WD LOW — (Trailhawk models only)
250 STARTING AND OPERATING
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