Cadillac ATS 2017 Owner's Manual page 258

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.
The Traction Control System (TCS)
or StabiliTrak system has activated
or been disabled.
No traffic or other objects are
being detected.
There is a fault in the system.
The ACC active symbol will not be
displayed when ACC is no longer
active.
Notification to Resume ACC
ACC will maintain a follow gap behind
a detected vehicle and slow your
vehicle to a stop behind that vehicle.
If the stopped vehicle ahead has
driven away and ACC has not
resumed, the vehicle ahead indicator
will flash as a reminder to check
traffic before proceeding. In addition,
the left and right sides of the Safety
Alert Seat will pulse three times,
or three beeps will sound. See Alert
Type and Go Notifier in Collision/
Detection Systems under Vehicle
Personalization 0 147.
When the vehicle ahead drives away,
press +RES or the accelerator pedal to
resume ACC. If stopped for more than
two minutes or if the driver door is
opened and the driver safety belt is
unbuckled, the ACC automatically
applies the electric parking brake to
hold the vehicle. The electric parking
brake status light will turn on. See
Parking Brake (Electric) 0 238 or
Parking Brake (Manual) 0 240. To
resume ACC and release the electric
parking brake, press the accelerator
pedal. ACC can be resumed when the
vehicle is traveling greater than
5 km/h (3 mph).
A DIC warning message may display
indicating to shift to P (Park) before
exiting the vehicle. See Vehicle
Messages 0 135.
DRIVING AND OPERATING
Warning
If ACC has stopped the vehicle, and
if ACC is disengaged, turned off,
or canceled, the vehicle will no
longer be held at a stop. The vehicle
can move. When ACC is holding the
vehicle at a stop, always be
prepared to manually apply the
brakes.
Warning
Leaving the vehicle without placing
it in P (Park) can be dangerous. Do
not leave the vehicle while it is
being held at a stop by ACC. Always
place the vehicle in P (Park) and
turn off the ignition before leaving
the vehicle.
ACC Override
If using the accelerator pedal while
ACC is active, a DIC warning message
will indicate that automatic braking
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