Buick 2016 Envision Owner's Manual page 280

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After ACC is set, it may immediately
apply the brakes if a vehicle ahead
is detected closer than the selected
following gap.
The ACC indicator displays in the
instrument cluster and Head-Up
display (HUD), if equipped. When
the ACC is active, the indicator
turns green.
Be mindful of speed limits,
surrounding traffic speeds, and
weather conditions when selecting
the set speed.
Resuming a Set Speed
If the ACC is set at a desired speed
and then the brakes are applied, the
ACC is disengaged without erasing
the set speed from memory.
To begin using ACC again, press
RES+ up briefly. The vehicle returns
to the previous set speed.
Increasing Speed While ACC is at
a Set Speed
If ACC is already activated, do one
of the following:
Use the accelerator to get to the
higher speed. Press SET down.
Release the control and the
accelerator pedal. The vehicle
will now cruise at the higher
speed.
When the accelerator pedal is
pressed, ACC will not brake
because it is overridden.
A warning message will appear
on the Driver Information Center
(DIC) and HUD, if equipped. See
Cruise Control Messages 0 137.
Press and hold RES+ up until
the desired set speed appears
on the display, then release it.
To increase vehicle speed in
small increments, press RES+
up briefly. For each press, the
vehicle goes 1 km/h (1 mph)
faster.
Driving and Operating
When it is determined that there is
no vehicle ahead inside the selected
following gap, then the vehicle
speed will increase to the set speed.
Reducing Speed While ACC is at a
Set Speed
If ACC is already activated, do one
of the following:
Use the brake to get to the
desired lower speed. Press
SET down and release the
accelerator pedal. The vehicle
will now cruise at the lower
speed.
Press and hold SET down until
the desired lower speed is
reached, then release it.
To decrease the vehicle speed in
smaller increments, press SET
down briefly. For each press, the
vehicle goes about 1 km/h
(1 mph) slower.
Selecting the Follow Distance
When a slower moving vehicle is
detected ahead within the selected
following gap, ACC will adjust the
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