Cadillac STS 2011 Owner's Manual page 194

9 (Off): Turns the system off.
R (On): Turns the system on.
The Head-Up Display must be on and properly
adjusted. If the HUD is not on, FCA will not be enabled
and you will not be provided with FCA audible and
visual warnings. See Head-Up Display (HUD) on
page 4 38 for more information.
The Forward Collision
Alert (FCA) controls are
located on the end of the
multifunction lever.
{
WARNING:
On winding roads, FCA may not detect a
vehicle ahead. You could crash into a vehicle
ahead of you. Do not rely on FCA on winding
roads.
When weather limits visibility, such as in fog,
rain, or snow, FCA performance is limited.
There may not be enough warning distance to
the vehicle in front of you. Do not rely on FCA
in low visibility conditions.
{
WARNING:
When FCA is enabled, the Adaptive Cruise
Control switch is on. If you press another Adaptive
Cruise Control button, you might go into cruise
when you do not want to. You could be startled
and even lose control. Be careful not to press
adaptive cruise buttons unless you want to use
cruise control.
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