2014 Jeep Grand Cherokee Owner Manual SRT - Page 407

STARTING AND OPERATING 405 or while towing heavy trailers), select TOW mode (refer to ЉSelec-Trac®Љ in ЉStarting and OperatingЉ) or use the Paddle Shift switches (refer to ЉPaddle Shift ModeЉ in this section for further information) to select a lower gear. Under these conditions, using TOW mode or a lower gear will improve performance and extend transmission life by reducing excessive shifting and heat buildup. During extremely cold temperatures (-22°F [-30°C] or below), transmission operation may be modified depending on engine and transmission temperature as well as vehicle speed. Normal operation will resume once the transmission temperature has risen to a suitable level. SPORT (S) Transmission Limp Home Mode Transmission function is monitored electronically for abnormal conditions. If a condition is detected that could result in transmission damage, Transmission Limp Home Mode is activated. In this mode, the transmission may operate only in certain gears, or may not shift at all. Vehicle performance may be severely degraded and the engine may stall. In some situations, the transmission may not re-engage if the engine is turned off and restarted. The Malfunction Indicator Light (MIL) may be illuminated. A message in the instrument cluster will inform the driver of the more serious conditions, and indicate what actions may be necessary. 5 This mode alters the transmission's automatic shift sched- In the event of a momentary problem, the transmission ule for sportier driving. Upshift speeds are increased to can be reset to regain all forward gears by performing the make full use of available engine power. To switch between following steps: DRIVE and SPORT modes, tap the shift lever rearward. SPORT mode is only accessible from DRIVE.