Cadillac 2009 STS Owner's Manual page 180

Alerting the Driver
Driver action is required when:
•
Adaptive Cruise Control cannot apply sufficient
braking because you are approaching a vehicle too
rapidly.
•
The vehicle speed drops below about
25 mph (40 km/h).
•
A temporary condition prohibits Adaptive Cruise
Control from operating. See DIC Warnings and
Messages on page 3-79 for more information.
•
A malfunction is detected in the system. See DIC
Warnings and Messages on page 3-79 for more
information.
See Defensive Driving on page 4-2.
3-26
The alert symbol flashes
on the HUD and a warning
beep sounds when driver
action is required.
CAUTION:
{
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 4-2.
Approaching and Following a Vehicle
If this symbol does not appear, or disappears briefly,
Adaptive Cruise Control will not respond to vehicles you
may see ahead.
The vehicle ahead symbol
only appears on the HUD
when a vehicle ahead
is detected in your path.