2010 Jeep Grand Cherokee Owner's Manual - Page 259

258 STARTING AND OPERATING NOTE: If shift conditions/interlocks are not met, a "CHECK SHIFT PROCEDURES" message will flash from the Electronic Vehicle Information Center (EVIC). Refer to "Electronic Vehicle Information Center (EVIC)" in "Understanding Your Instrument Panel" for further information. 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. ON-ROAD DRIVING TIPS Utility vehicles have higher ground clearance and a Quadra-Drive II System - If Equipped narrower track to make them capable of performing in a The optional Quadra-Drive II System features three wide variety of off-road applications. Specific design torque transfer couplings. The couplings include Elec- characteristics give them a higher center of gravity than tronic Limited-Slip Differential (ELSD) front and rear ordinary cars. axles and Quadra-Trac II transfer case. The optional ELSD axles are fully automatic and require no driver An advantage of the higher ground clearance is a better input to operate. Under normal driving conditions, the view of the road, allowing you to anticipate problems. units function as standard axles, balancing torque evenly They are not designed for cornering at the same speeds as between left and right wheels. With a traction difference conventional two-wheel drive vehicles any more than between left and right wheels, the coupling will sense a low-slung sports cars are designed to perform satisfactospeed difference. As one wheel begins to spin faster than rily in off-road conditions. If at all possible, avoid sharp the other, torque will automatically transfer from the wheel that has less traction, to the wheel that has traction.