Black plate (40,1)Cadillac XTS Owner Manual (GMNA-Localizing-U.S./Canada-6006999) -2014 - CRC - 9/11/139-40 Driving and OperatingACC automatically slows the vehicledown and adjusts vehicle speed tofollow the vehicle in front at theselected follow gap. The vehiclespeed increases or decreases tofollow the vehicle in front of you, butwill not exceed the set speed. It mayapply limited braking, if necessary.When braking is active, the brakelights will come on. The automaticbraking may feel or sound differentthan if the brakes were appliedmanually. This is normal.Stationary or Very Slow-MovingObjects{ WarningAdaptive Cruise Control (ACC)may not detect and react tostopped or slow-moving vehiclesahead of you. For example, thesystem may not brake for avehicle that it has never detectedmoving. This can occur instop-and-go traffic or when a(Continued)Warning (Continued)vehicle suddenly appears due toa vehicle ahead changing lanes.Your vehicle may not stop andcould cause a crash. Use cautionwhen using ACC. Your completeattention is always required whiledriving and you should be readyto take action and apply thebrakes.ACC Automatically DisengagesACC may automatically disengageand the driver will need to manuallyapply the brakes to slow thevehicle when:. The sensors are blocked.. The Traction Control System(TCS) or electronic stabilitycontrol system has activated orbeen disabled.. No traffic or other objects arebeing detected.. There is a fault in the system.The ACC active symbol will not bedisplayed when ACC is no longeractive.Notification to Resume ACCACC will maintain a follow gapbehind a detected vehicle and slowyour vehicle to a stop behind thatvehicle.If the stopped vehicle ahead hasdriven away and ACC has notresumed, the vehicle ahead symbolwill flash as a reminder to checktraffic ahead before proceeding. Inaddition, the left and right sides ofthe Safety Alert Seat will pulse threetimes, or three beeps will sound.See ”Alert Type” and “Go Notifier” in“Collision/Detection Systems” underVehicle Personalization onpage 5-48.When the vehicle ahead drivesaway, press RES+ or theaccelerator pedal to resume cruisecontrol. If stopped for more thantwo minutes or if the driver door isopened and the driver safety belt isunbuckled, the ACC automatically