Buick Envista Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-18181221) - 2025
Driving and Operating 169
Warning (Continued)
is clear before using ACC. Before driving,
check that the windshield wipers are in
good condition and replace them if worn.
Lighting Conditions Affecting ACC
T
he ACC front camera can be affected by poor
lighting conditions and ACC may have limited
performance when:
•
There are changes in brightness, such as
when entering and exiting tunnels, bridges,
and overpasses.
•
Low sun angles cause the camera to not
detect objects ahead, or it is more difficult
to detect objects in the same traffic lane.
•
Lighting is poor in the evening or early
morning times of day.
•
There are multiple changes in brightness or
shadows along the vehicle roadway.
•
In a tunnel without the headlamps on, or in
a tunnel when there is a vehicle in front that
does not have its taillamps on.
•
S
ubjected to strong light from the opposing
lane of traffic in the front of your
vehicle, such as high-beam headlamps from
oncoming traffic.
Accessory Installations and
Vehicle Modifications
Do not install or place any object around
the front camera windshield area that would
obstruct the front camera view.
Do not install objects on top of the vehicle that
overhang and obstruct the front camera, such
as acanoe, kayak, or other items that can be
transported on aroof rack system.
Do not modify the hood, headlamps, or fog
lamps, as this may limit the camera’s ability to
detect an object.
Cleaning the Sensing System
The camera sensor on the windshield behind
the rearview mirror can become blocked by
snow, ice, dirt, mud, or debris. This area needs
to be cleaned for ACC to operate properly.
The radar sensors on the front of the vehicle can
also become blocked by snow ice, dirt, mud, or
debris. These areas need to be cleaned for ACC
to operate properly.
The v
ehicle headlamps may need to be cleaned
due to dirt, snow, or ice. Objects that are not
illuminated correctly may be difficult to detect.
For cleaning instructions, see “Washing the
Vehicle” under Exterior Care 3244.
If ACC will not operate, regular cruise control
may be available. See “Switching Between ACC
and Regular Cruise Control” previously in this
section. Always consider driving conditions
before using either cruise control system.
Advanced Driver
Assistance Systems
This vehicle may have features that work
together to help avoid crashes or reduce
crash damage while driving, backing, and
parking. Read this entire section before using
these systems.
{ Warning
Do not rely on the Driver Assistance
S
ystems. These systems do not replace
the need for paying attention and driving
safely. You may not hear or feel alerts
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