2007 Jeep Grand Cherokee Owner's Manual - Page 260

260 STARTING AND OPERATING Transmission Limp Home Mode Transmission function is monitored for abnormal conditions. If a condition is detected that could result in transmission damage, the transmission limp home mode will be engaged. In this mode, the transmission will remain in the current gear (3.7L engine) or in direct gear (4.7L and 5.7L engines) until the vehicle is brought to a stop. To reset the transmission, use the following procedure: 1. Stop the vehicle. 2. Move the shift lever to the P (Park) position. 3. Turn off the engine, be sure to turn the key to the LOCK position. 4. Wait approximately 10 seconds, then restart the engine. 5. Move the shift lever to the desired gear range. If the problem is no longer detected, the transmission will return to normal operation. If the problem persists, P (Park), R (Reverse), and N (Neutral) will continue to operate. Only 2nd gear (3.7L engine) or 3rd gear (4.7L and 5.7L engines) will be available in the D (Drive) position. Have the transmission checked at your authorized dealer as soon as possible. Torque Converter Clutch A feature, designed to improve fuel economy, has been included in the automatic transmission on your vehicle. A clutch within the torque converter engages automatically at a calibrated speed at light throttle. It engages at higher speeds under heavier acceleration. This may result in a slightly different feeling or response during normal operation in high gear. When the vehicle speed drops below a calibrated speed, or during acceleration, the clutch automatically and smoothly disengages. The feature is operational in Overdrive and in Drive.