2009 Jeep Liberty Owner's Manual - Page 336

334 STARTING AND OPERATING Depending upon model and mode of operation, the ESP system has up to three operating modes: "ESP On" "Partial Off," and "Full Off." ESP On - Two-Wheel Drive Vehicles and Four-Wheel Drive Vehicles in 2WD and 4WD High Range This is the normal operating mode for ESP when operating a two-wheel drive vehicle. It is also the normal mode for operating a four-wheel drive vehicle in 2WD or 4WD HIGH range. The ESP system will be in "ESP On" mode whenever the vehicle is started or the transfer case (if equipped) is shifted out of 4WD LOW range. This mode should be used for most driving situations. ESP should only be turned to "Partial Off" or "Full Off" for specific reasons as noted. Refer to "Partial Off" and to "Full Off" for additional information. Partial Off - Two-Wheel Drive Vehicles and Four-Wheel Drive Vehicles in 2WD and 4WD High Range The "Partial Off" mode is intended for driving in deep snow, sand, or gravel. This mode raises the threshold for TCS and ESP activation, which allows for more wheel spin than what ESP normally allows. The "ESP OFF" button is located in the lower switch bank below the climate control. To enter the "Partial Off" mode, momentarily depress the "ESP OFF" button and the ESP/TCS Indicator Light" will illuminate. To turn the ESP on again, momentarily depress the ESP OFF button and the ESP/TCS Indicator Light" will turn off. This will restore the normal "ESP On" mode of operation.