Jeep 2004 Grand Cherokee - Manual (Page 194)

Quadra-Drive
ா
System — If Equipped
The optional Quadra-Drive
௡ System features three
torque transfer couplings. The couplings include Vari-
Lok front and rear axles and Quadra-Trac II
௡ transfer
case. The optional Vari-Lok axles are fully automatic and
require no driver input to operate. Under normal driving
conditions the units function as standard axles balancing
torque evenly between left and right wheels. With a
traction difference between left and right wheels the
coupling will sense a speed difference. As one wheel
begins to spin faster than the other, torque will automati-
cally transfer from the wheel that has less traction to the
wheel that has traction. While the transfer case and axle
couplings differ in design, their operation is similar.
Follow the Quadra-Trac II
௡ transfer case shifting infor-
mation, preceding this section, for shifting this system.
VARI-LOK FRONT AND REAR AXLES — IF
EQUIPPED
The optional Vari-Lok axle is fully automatic and requires
no driver input to operate. Under normal driving condi-
tions the unit functions as a standard axle balancing
torque evenly between left and right wheels. With a
traction difference between left and right wheels the
coupling will sense a speed difference. As one wheel
begins to spin faster than the other, torque will automati-
cally transfer from the wheel that has less traction to the
wheel that has traction.
PARKING BRAKE
To set the parking brake, pull the lever up as firmly as
possible. When the parking brake is applied with the
ignition ON, the “Brake Warning Light” in the instru-
ment cluster will light.
194 STARTING AND OPERATING