2007 Jeep Liberty Owner's Manual - Page 230

230 STARTING AND OPERATING including dry hard surfaced roads. The 4 FULL TIME mode allows the front and rear wheels to rotate at different speeds which eliminates driveline binding and component wear that is normally associated with driving the vehicle in the 4 PART TIME position on dry hard surfaced roads. This feature provides the safety, security, and convenience of operating in 4-wheel drive at all times regardless of road conditions. When additional traction is required the 4 PART TIME and 4LO positions can be used to lock the front and rear driveshafts together through the transfer case inter-axle differential and force the front and rear driveshafts to rotate at the same speed. This is accomplished by simply moving the shift lever to these positions. The 4 PART TIME and 4LO positions are intended for loose, slippery road surfaces only. Driving in the 4 PART TIME and 4LO positions on dry hard surfaced roads may cause increased tire wear and damage to driveline components. The PART TIME indicator light, located on the instrument cluster, illuminates when the transfer case is shifted to the 4 PART TIME position. The FULL TIME indicator light, located on the instrument cluster, illuminates when the transfer case is shifted to the 4 FULL TIME position. The 4LO MODE indicator light, located on the instrument cluster, illuminates when the transfer case is shifted to the 4LO position. There is no light for the 2WD, or N (Neutral) positions.