2015 Cadillac XTS Owner Manual - Page 288

Vehicle Care There are also engine hot messages that may be displayed in the Driver Information Center (DIC). See Engine Cooling System Messages on page 5-38. The CAC bottle pressure cap can be removed when the Charged Air Coolant cooling system, including the CAC bottle pressure cap, is no longer hot. 1. Turn the pressure cap slowly counterclockwise and remove it. 2. Fill the CAC bottle with the proper mixture to the COLD FILL mark pointed to on the front of the CAC bottle. 3. Replace the pressure cap tightly. If the decision is made not to lift the hood when one of these warnings appears, but get service help right away. See Roadside Service on page 13-5. If the decision is made to lift the hood, make sure the vehicle is parked on a level surface. Then check to see if the engine cooling fans are running. If the engine is overheating, the fans should be running. If they are not, do not continue to run the engine and have the vehicle serviced. 10-19 Caution (Continued) covered by the vehicle warranty. See Overheated Engine Protection Operating Mode on page 10-20 for information on driving to a safe place in an emergency. If Steam Is Coming from the Engine Compartment { Warning Steam from an overheated engine can burn you badly, even if you just open the hood. Stay away from the engine if you see or hear steam coming from it. Just turn it off and get everyone away from the vehicle until it cools down. Wait until there is no sign of steam or coolant before you open the hood. (Continued) Engine Overheating The vehicle has an engine coolant temperature gauge and an engine temperature light to warn of engine overheating. { Caution Running the engine without coolant may cause damage or a fire. Vehicle damage would not be (Continued)