Buick Envista 2025 - Lane Change Alert (LCA); Side Blind Zone Alert (SBZA)

Buick Envista Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-18181221) - 2025
178 Driving and Operating
Side Blind Zone Alert (SBZA)
I
f equipped, the SBZA system is a lane-changing
aid that assists drivers with avoiding crashes
that occur with moving vehicles in the side
blind zone (or spot) areas. When the vehicle is
in aforward gear, the left or right side mirror
display will light up if amoving vehicle is
detected in that blind zone. If the turn signal
is activated and avehicle is also detected on
the same side, the display will flash as an
extra warning not to change lanes. Since this
system is part of the Lane Change Alert (LCA)
system, read the entire LCA section before
using this feature.
Lane Change Alert (LCA)
If equipped, the LCA system is alane-changing
aid that assists drivers with avoiding lane
change crashes that occur with moving vehicles
in the side blind zone (or spot) areas or with
vehicles rapidly approaching these areas from
behind. The LCA warning display will light up in
the corresponding outside mirror and will flash
if the turn signal is on.
{ W
arning
LCA does not alert the driver to vehicles
o
utside of the system detection zones,
pedestrians, bicyclists, or animals. It may
not provide alerts when changing lanes
under all driving conditions. Failure to
use proper care when changing lanes may
result in injury, death, or vehicle damage.
Before making a lane change, always check
mirrors, glance over your shoulder, and use
the turn signals.
LCA Detection Zones
1. SBZA Detection Zone
2
. LCA Detection Zone
The LCA sensor covers azone of approximately
o
ne lane over from both sides of the vehicle,
or 3.5 m (11 ft). The height of the zone is
approximately between 0.5 m (1.5 ft) and 2 m (6
ft) off the ground. The Side Blind Zone Alert
(SBZA) warning area starts at approximately
the middle of the vehicle and goes back 5 m (16
ft). Drivers are also warned of vehicles rapidly
approaching from up to 70 m(230 ft) behind
the vehicle.
How the System Works
The LCA symbol lights up in the outside mirrors
when the system detects amoving vehicle in
the next lane over that is in the side blind zone
or rapidly approaching that zone from behind.
Alit LCA symbol indicates it may be unsafe
to change lanes. Before making alane change,
check the LCA display, check mirrors, glance
over your shoulder, and use the turn signals.