Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9159276) - 2016 - crc - 10/5/15Driving and Operating 231. Press and hold SET– down untilthe desired lower speed isreached, then release it.. To decrease the vehicle speed insmaller increments, press SET−down to the first detent. Foreach press, the vehicle goesabout 1 km/h (1 mph) slower.. To decrease the vehicle speed inlarger increments, press SET−down to the second detent. Foreach press, the vehicle speeddecreases to the next 5 km/h(5 mph) mark on thespeedometer.The speedometer reading can bedisplayed in either English or metricunits. See Instrument Cluster 0 116.The increment value used dependson the units displayed.Selecting the Follow DistanceWhen a slower moving vehicle isdetected ahead within the selectedfollowing gap, ACC will adjust thevehicle's speed and attempt tomaintain the follow distance gapselected.Press [ on the steering wheel toadjust the following gap. Each presscycles the gap button through threesettings: Far, Medium, or Near.When pressed, the current gapsetting displays briefly on theinstrument cluster and HUD,if equipped. Subsequent pressescycle the gap button through threesettings: Far, Medium, or Near. Thegap setting will be maintained until itis changed.Since each gap setting correspondsto a following time (Far, Medium,or Near), the following distance willvary based on vehicle speed. Thefaster the vehicle speed, the furtherback your vehicle will follow avehicle detected ahead. Considertraffic and weather conditions whenselecting the following gap. Therange of selectable gaps may not beappropriate for all drivers anddriving conditions.Changing the gap settingautomatically changes the alerttiming sensitivity (Far, Medium,or Near) for the Forward CollisionAlert (FCA) feature. See ForwardCollision Alert (FCA) System 0 243.Alerting the DriverWithout Head-Up DisplayWith Head-Up DisplayIf ACC is engaged, driver actionmay be required when ACC cannotapply sufficient braking because ofapproaching a vehicle too rapidly.When this condition occurs, a seriesof red lights or the collision alertsymbol on the HUD, if equipped, willflash on the windshield. Either eightbeeps will sound from the front,