Four-Wheel Drive Operation - If Equipped; Jeep Active Drive - Jeep COMPASS 2017 User Manual

Torque Converter Clutch
A feature designed to improve fuel economy
has been included in the automatic transmis-
sion 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 ac-
celerations, the clutch automatically disen-
gages.
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 en-
gaged, 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 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 condi-
tions, 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 trac-
tion 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)
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