2005 Jeep Grand Cherokee Owner Manual - Page 244

244 STARTING AND OPERATING the EVIC (Electronic Vehicle Information Center). Refer to "Electronic Vehicle Information Center (EVIC)" in Section 4 of this manual. Quadra-Driveா System - If Equipped The optional Quadra-Drive௡ System features three torque transfer couplings. The couplings include ELSD (Electronic Limited Slip Differential) front and rear axles and Quadra-Trac II௡ transfer case. The optional ELSD 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 automatically 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 information, preceding this section, for shifting this system. 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 instrument cluster will light. NOTE: The instrument cluster "Brake Warning Light" indicates only that the parking brake is applied. It does not indicate the degree of brake application.