Cadillac 2013 ATS Owner's Manual page 216

9-42 Driving and Operating
Either eight beeps will sound from
the front, or both sides of the Safety
Alert Seat will pulse five times. See
Collision/Detection Systems under
Vehicle Personalisation on
page 5 40.
See Defensive Driving on page 9 2.
Approaching and Following a
Vehicle
The vehicle ahead symbol is in the
instrument cluster and HUD display
(if equipped).
The vehicle ahead symbol only
displays when a vehicle is detected
in your vehicle's path.
If this symbol is not displaying, ACC
will not respond to or brake to
vehicles ahead.
ACC automatically slows the vehicle
down and adjusts vehicle speed to
follow the vehicle in front at the
selected follow gap. The vehicle
speed increases or decreases to
follow the vehicle in front of you, but
will not exceed the set speed. It may
apply limited braking, if necessary.
When braking is active, the brake
lamps will come on. The automatic
braking may feel or sound different
than if the brakes were applied
manually. This is normal.
Stationary or Very Slow-Moving
Objects
WARNING
Adaptive Cruise Control (ACC)
may not detect and react to
stopped or slow-moving vehicles
ahead of you. For example, the
system will not brake for a vehicle
that it has never detected moving.
This can occur in stop-and-go
traffic or when a vehicle suddenly
WARNING (Continued)
appears due to a vehicle ahead
changing lanes. Your vehicle may
not stop and could cause a crash.
Use caution when using ACC.
Your complete attention is always
required while driving and you
should be ready to take action
and apply the brakes.
ACC Automatically Disengages
ACC may automatically disengage
and the driver will need to manually
apply the brakes to slow the
vehicle when:
The sensors are blocked.
There is no traffic and nothing to
detect on the side of the road.
There is a fault in the system.
The ACC active symbol will not be
displayed when ACC is no longer
active.
(Continued)