Cadillac 2015 ATS Owner's Manual page 226

Collision Alert
With Head-Up Display
Without Head-Up Display
When your vehicle approaches
another detected vehicle too rapidly,
the red FCA display will flash on the
windscreen. Also, eight high-pitched
beeps will sound from the front,
or both sides of the Safety Alert
Seat will pulse five times.
When this Collision Alert occurs, the
brake system may prepare for driver
braking to occur more rapidly which
can cause a brief, mild deceleration.
Continue to apply the brake pedal
as needed. Cruise control may be
disengaged when the Collision Alert
occurs.
Tailgating Alert
The vehicle-ahead indicator will
display amber when you are
following a detected vehicle ahead
much too closely.
Driving and Operating
Selecting the Alert Timing
The Collision Alert control is on the
steering wheel. Press
FCA timing to Far, Medium, Near,
or on some vehicles, Off. The first
button press shows the current
setting on the DIC. Additional button
presses will change this setting. The
chosen setting will remain until it is
changed and will affect the timing of
both the Collision Alert and the
Tailgating Alert features. The timing
of both alerts will vary based on
vehicle speed. The faster the
vehicle speed, the farther away the
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to set the