2006 Jeep Grand Cherokee Owner Manual SRT8 - Page 180

180 UNDERSTANDING YOUR INSTRUMENT PANEL 13. Temperature Gauge The temperature gauge shows engine coolant temperature. Any reading within the normal range indicates that the engine cooling system is operating satisfactorily. The gauge pointer will likely indicate a higher temperature when driving in hot weather, up mountain grades, or when towing a trailer. It should not be allowed to exceed the upper limits of the normal operating range. CAUTION! Driving with a hot engine cooling system could damage your vehicle. If temperature gauge reads (H), pull over and stop the vehicle. Idle the vehicle with the air conditioner turned off until the pointer drops back into the normal range. If the pointer remains on the "H", and you hear continuous chimes, turn the engine off immediately, and call for service. WARNING! A hot engine cooling system is dangerous. You or others could be badly burned by steam or boiling coolant. If you decide to look under the hood yourself, refer to Section 7 of this manual. Follow the warnings under "Cooling System Pressure Cap."