2011 Cadillac DTS Owner's Manual - Page 176

Alerting the Driver The ACC alert symbol is located on the display at the top of the instrument panel to the right of the driver. { WARNING: Adaptive Cruise Control has only limited braking ability to slow your vehicle. In some cases, Adaptive Cruise Control may not have time to slow your vehicle enough to avoid a collision. Be ready to take action and apply the brakes yourself. See Defensive Driving on page 5‑2. The alert symbol flashes and a warning beep sounds when driver action may be required. If ACC is engaged, the alert symbol will flash when: . Approaching and Following a Vehicle The vehicle ahead symbol is located on the top of the instrument panel to the right of the driver. ACC cannot apply sufficient braking because you are approaching a vehicle too rapidly. The vehicle speed drops below about 32 km/h (20 mph). A temporary condition prohibits ACC from operating. See DIC Warnings and Messages on page 4 ‑ 62 for more information. A malfunction is detected in the system. See DIC Warnings and Messages on page 4 ‑ 62 for more information. . . . The vehicle ahead symbol only appears when a vehicle is detected in your path. If this symbol does not appear, or disappears briefly, ACC will not respond to vehicles you may see ahead. See Defensive Driving on page 5‑2. 4-18