Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-9235592) -2016 - crc - 11/6/15Instruments and Controls 149TRUNK OPENThis message will display along witha symbol when the trunk is open.Close the trunk completely.Engine Cooling SystemMessagesA/C OFF DUE TO HIGHENGINE TEMPThis message displays when theengine coolant becomes hotter thanthe normal operating temperature.To avoid added strain on a hotengine, the air conditioningcompressor automatically turns off.When the coolant temperaturereturns to normal, the airconditioning compressor turns backon. The vehicle can continue to bedriven.If this message continues to appear,have the system repaired by yourdealer as soon as possible to avoiddamage to the engine.COOLANT LEVEL LOW ADDCOOLANTThis message will display if thecoolant is low. See EngineCoolant 0 277.ENGINE OVERHEATED —IDLE ENGINEThis message displays when theengine coolant temperature is toohot. Stop and allow the vehicle toidle until it cools down.ENGINE OVERHEATED —STOP ENGINEThis message displays and acontinuous chime sounds if theengine cooling system reachesunsafe temperatures for operation.Stop and turn off the vehicle assoon as it is safe to do so to avoidsevere damage. This messageclears when the engine has cooledto a safe operating temperature.HIGH COOLANTTEMPERATUREThis message may display if thecoolant temperature is hot. SeeEngine Overheating 0 280.Engine Oil MessagesCHANGE ENGINE OIL SOONThis message displays when theengine oil needs to be changed.When you change the engine oil, besure to reset the oil life system. SeeEngine Oil Life System 0 272, DriverInformation Center (DIC) 0 140,Engine Oil 0 270, and MaintenanceSchedule 0 344.ENGINE OIL HOT, IDLEENGINEThis message displays when theengine oil temperature is too hot.Stop and allow the vehicle to idleuntil it cools down.ENGINE OIL LOW — ADD OILOn some vehicles, this messagedisplays when the engine oil levelmay be too low. Check the oil level
