Cadillac XT4 Owner Manual (GMNA-Localizing-MidEast-13527545) - 2020 -CRC - 9/16/19DRIVING AND OPERATING 171Auto Stops may not occur and/or AutoStarts may occur because:. The climate control settingsrequire the engine to be runningto cool or heat the vehicle interior.. The vehicle battery charge is low.. The vehicle battery has recentlybeen disconnected.. Minimum vehicle speed has notbeen reached since the lastAuto Stop.. The accelerator pedal is pressed.. The engine or transmission is notat the required operatingtemperature.. The outside temperature is not inthe required operating range.. The vehicle is in any gear otherthan D (Drive).. Driver modes have been selected.. The vehicle is on a steep hill orgrade.. The driver door has been openedor the driver seat belt has beenunbuckled.. The hood has been opened.. The Auto Stop has reached themaximum allowed time.Auto Stop Disable SwitchThe automatic engine Stop/Startfeature can be disabled and enabledby pressing the switch with the hsymbol. Auto Stop is enabled eachtime you start the vehicle.When h is illuminated, the system isenabled.Engine HeaterThe engine heater, if available, canhelp in cold weather conditions at orbelow −18 °C (0 °F) for easier startingand better fuel economy duringengine warm-up. Plug in the engineheater at least four hours beforestarting the vehicle. An internalthermostat in the plug end of the cordwill prevent engine heater operationat temperatures above −18 °C (0 °F).{ WarningDo not plug in the engine blockheater while the vehicle is parked ina garage or under a carport.Property damage or personal injurymay result. Always park the vehiclein a clear open area away frombuildings or structures.To Use the Engine Heater1. Turn off the engine.