2008 Dodge Durango Owner Manual - Page 301

STARTING AND OPERATING 301 4WD/4WD LOCK or 2WD Models ON This is the normal operating mode for ESP in 4WD LOCK and in 2WD vehicles. Whenever the vehicle is started or the transfer case (if equipped) is shifted from 4WD LOW or neutral back to 4WD LOCK, the ESP system will be in this mode. This mode should be used for most all driving situations. ESP should only be turned to "Partial Off" for specific reasons as noted below. This mode is entered by momentarily depressing the "ESP OFF" Control Switch. When in "Partial Off" mode, the engine management portion of ESP has been desensitized, the thresholds for ESP activation are raised, and the "ESP/TCS Indicator Light" will be Partial Off illuminated. This mode is intended to be used if the vehicle is in deep snow, sand or gravel conditions and more wheel spin than ESP would normally allow is required to gain traction. TSC (Trailer Sway Control) is not available when the system is in the ЉPartial OffЉ mode. To turn ESP on again, momentarily depress the "ESP-Control OFF" Control Switch. This will restore the normal "ON" mode of operation. ESP always operates under braking, even with the switch in the OFF-position. WARNING! In the Partial Off mode, the engine torque reduction and stability features are desensitized. Therefore, the enhanced vehicle stability offered by ESP is unavailable. NOTE: To improve the vehicle's traction when driving with snow chains, or starting off in deep snow, sand or gravel, it may be desirable to switch to the "Partial Off" 5