2015 Jeep Grand Cherokee User Guide SRT - Page 161

OFF-ROAD CAPABILITIES (4WD OPERATION) • Aero Mode (Lowers the vehicle approximately 0.6 in (15 mm) - This position provides improved aerodynamics by lowering the vehicle. The vehicle will automatically enter Aero Mode when the vehicle speed remains between 52 mph (83 km/h) and 56 mph (90 km/h) for greater than 20 seconds or if the vehicle speed exceeds 56 mph (90 km/h). The vehicle will return to NRH from Aero Mode if the vehicle speed remains between 20 mph (32 km/h) and 25 mph (40 km/h) for greater than 20 seconds or if the vehicle speed falls below 20 mph (32 km/h). The vehicle will enter Aero Mode, regardless of vehicle speed if the shift lever is in the "SPORT" position. WARNING! • You or others could be injured if you leave the vehicle unattended with the transfer case in the N (Neutral) position without first fully engaging the parking brake. The transfer case N (Neutral) position disengages both the front and rear driveshafts from the powertrain and will allow the vehicle to move regardless of the transmission position. The parking brake should always be applied when the driver is not in the vehicle. • The air suspension system uses a high pressure volume of air to operate the system. To avoid personal injury or damage to the system, see your authorized dealer for service. HILL START ASSIST/HILL DESCENT CONTROL/SELEC SPEED CONTROL - IF EQUIPPED • The Hill Start Assist system assists the driver when starting a vehicle from a stop on a hill. • The Hill Descent Control system maintains vehicle speed while descending hills during off-road driving situations and is available in 4WD LOW range. • The Selec Speed Control feature allows the driver to travel at slow speeds on level ground, uphill or downhill without actively controlling either the throttle or brake. • Refer to your Owner's Manual on the DVD for further details. 159