2007 Cadillac CTS Owner's Manual - Page 215

Hot Coolant Temperature Warning Message When you see this flashing symbol, the engine coolant temperature is high (257°F (125°C)). Check Engine Oil Pressure Message Your vehicle may have this feature. When you see this flashing symbol, the engine oil pressure is low. To acknowledge this warning, press either button on the outboard switch on the left spoke of the steering wheel. After you press a button, this warning will come on every 10 minutes until the temperature returns to the normal operating range. Driving aggressively or driving on long hills can cause the engine coolant temperature to be higher than normal. The Engine Coolant Temperature Warning Light should also come on. See Engine Coolant Temperature Warning Light (CTS) on page 200 for more information. If this warning is displayed during normal vehicle operation on flat roads, your vehicle may need service. See your dealer for an inspection. To acknowledge this warning, press either button on the outboard switch on the left spoke of the steering wheel. After you press this button, the warning will redisplay every 10 minutes until the pressure returns to the normal operating range. Oil pressure should be 20 to 80 psi (140 to 550 kPa). In certain situations such as long, extended idles on hot days, it could read as low as 6 psi (40 kPa) and still be considered normal. It may vary with engine speed, outside temperature and oil viscosity. The Oil Pressure Light shoud also come on. See Oil Pressure Light on page 206 for more information. 215