2011 Buick Lucern Owner's Manual - Page 192

Engine Coolant Temperature Warning Light This light comes on briefly while starting the vehicle. Engine Coolant Temperature Gauge If it does not, have the vehicle serviced by the dealer. If the system is working normally the indicator light goes off. Notice: Driving with the engine coolant temperature warning light on could cause the vehicle to overheat. See Engine Overheating on page 6‑35. The vehicle's engine could be damaged, and it might not be covered by the vehicle warranty. Never drive with the engine coolant temperature warning light on. The engine coolant temperature warning light comes on when the engine has overheated. If this happens pull over and turn off the engine as soon as possible. See Engine Overheating on page 6 ‑ 35 for more information. English Metric This gauge shows the engine coolant temperature. If the pointer moves towards the H (United States) or shaded in thermostat symbol area (Canada), the engine is too hot. A temperature indicator light will turn on and a chime will sound. If the vehicle has been operating under normal driving conditions, and the temperature indicator light comes on, pull off the road, stop the vehicle and turn off the engine as soon as possible. 4-36