Cadillac 2011 STS Owner's Manual page 201

When going downhill, you might have to brake to keep
the vehicle speed down. When the brakes are applied
the cruise control is disengaged.
There are three ways to end cruise control.
To disengage cruise control; step lightly on the
brake pedal.
Press the button on the steering wheel.
To turn off cruise control, move the cruise control
switch to .
The cruise control set speed is erased from memory by
moving the cruise control switch to
is turned off.
If the vehicle has adaptive cruise control, read the
Radio Frequency Statement on page 8 20 before using
this feature.
Changes or modifications to this system by other than
an authorized service facility could void authorization to
use this equipment.
Adaptive Cruise Control is an enhancement to
traditional cruise control and is not a safety system.
It allows you to keep cruise control engaged in
moderate traffic conditions without having to constantly
be reset. Adaptive Cruise Control uses radar to
detect a vehicle directly ahead in your path, within a
distance of 100 m (328 ft), and operates at speeds
above 48 km/h (30 mph). When it is engaged by
or if the ignition
the driver, the system can apply limited braking or
acceleration of the vehicle, automatically, to maintain
a selected following distance to the vehicle ahead.
4-15