2010 BUICK LACROSSE Owner's Manual

Driving and Operating 8-43
.A tow bar is attached to the
vehicle.
.The vehicle's bumper is
damaged. Take the vehicle to
your dealer/retailer to repair the
system.
.Other conditions may affect
system performance, such as
vibrations from a jackhammer or
the compression of air brakes on
a very large truck.
If the system is still disabled, after
driving forward at least 25 km/h
(15 mph), take the vehicle to your
dealer/retailer.
Side Blind Zone
Alert (SBZA)
The vehicle may have a Side Blind
Zone Alert (SBZA) system. Read
this entire section before using the
system.
{WARNING
SBZA is only a lane changing aid
and does not replace driver
vision. SBZA does not detect:
.Vehicles outside the side
blind zones which may be
rapidly approaching.
.Pedestrians, bicyclists,
or animals. (Continued)
WARNING (Continued)
Failure to use proper care when
changing lanes may result in
damage to the vehicle, injury,
or death. Always check the
outside and rearview mirrors,
glance over your shoulder, and
use the turn signal before
changing lanes.
When the system detects a vehicle
in the side blind zone, amber SBZA
displays will light up in the side
mirrors. This indicates that it may be
unsafe to change lanes. Before
making a lane change, always
check the SBZA display, check the
outside and rearview mirrors, look
over your shoulder for vehicles and
hazards, and use the turn signal.

8-44 Driving and Operating
SBZA Detection Zones
The SBZA sensor covers a zone
of approximately one lane over
from both sides of the vehicle,
3.5 m (11 ft.). This zone starts at
each side mirror and goes back
approximately 5.0 m (16 ft.). The
height of the zone is approximately
between 0.5 m (1.5 ft.) and
2.0 m (6 ft.) off the ground.
The SBZA detection zones do not
change if the vehicle is towing a
trailer. So be extra careful when
changing lanes while towing a
trailer.How the System Works
Left Side Mirror
DisplayRight Side Mirror Display
When the vehicle is started, both
outside mirror displays will briefly
come on to indicate that the system
is operating. While driving forward,
the left or right side mirror SBZA
display will light up if a vehicle is
detected in that blind zone. If you
activate a turn signal and a vehicle
has been detected on the same
side, the SBZA display will flash to
give you extra warning not to
change lanes. SBZA displays do not come on
while the vehicle is approaching or
passing other vehicles. At speeds
greater than 32 km/h (20 mph),
SBZA displays may come on when
a vehicle you have passed remains
in or drops back into the
detection zone.
SBZA can be disabled through
Vehicle Personalization. See
Vehicle Personalization
on
page 4‑38for more information.
If the SBZA is disabled by the
driver, the SBZA mirror displays will
not light up during normal driving.

Driving and Operating 8-45
When the System Does Not Seem
To Work Properly
Occasional missed alerts can occur
under normal circumstances and will
increase in wet conditions. The
system does not need to be
serviced due to an occasional
missed alert. The number of missed
alerts will increase with increased
rainfall or road spray.
If the SBZA displays do not light up
when the system is on and vehicles
are in the blind zone, the system
may need service. Take the vehicle
to your dealer/retailer.
SBZA is designed to ignore
stationary objects; however, the
system may occasionally light up
due to guard rails, signs, trees,
shrubs, and other stationary objects.
This is normal system operation, the
vehicle does not need service.SBZA does not operate when the
left or right corners of the rear
bumper are covered with mud, dirt,
snow, ice, slush, or in heavy
rainstorms. For cleaning
instructions, see
Exterior Care
on
page 9‑82. If the infotainment
display still shows the SIDE BLIND
ZONE SYS. UNAVAILABLE
message after cleaning the bumper,
see your dealer/retailer.
The SBZA displays may remain on
if a trailer is attached to the vehicle,
or a bicycle or object is extending
out to either side of the vehicle.
When SBZA is disabled for any
reason other than the driver turning
it off, the driver will not be able to
turn SBZA back on using Vehicle
Personalization. The SIDE BLIND
ZONE ALERT ON option will not be
selectable if the conditions for
normal system operation are not
met. Until normal operating
conditions for SBZA are met, you
should not rely upon SBZA while
driving. SBZA Error Messages
The following messages may
appear on the infotainment display:
SIDE BLIND ZONE ALERT
SYSTEM OFF:
This message
indicates that the driver has turned
the system off.
SIDE BLIND ZONE SYS.
UNAVAILABLE: This message
indicates that the SBZA system is
disabled because the sensor is
blocked and cannot detect vehicles
in the blind zone. The sensor may
be blocked by mud, dirt, snow, ice,
slush, or even heavy rainstorms.
This message may also activate
during heavy rain or due to road
spray. The vehicle does not need
service. For cleaning, see Exterior
Care on page 9‑82.

8-46 Driving and Operating
SERVICE SIDE BLIND ZONE
ALERT SYSTEM:If this message
appears, both SBZA displays will
remain on indicating there is a
problem with the SBZA system.
If these displays remain on after
continued driving, the system needs
service. Take the vehicle to your
dealer/retailer.
FCC Information
See Radio Frequency Statement
(US, Can)on page 12‑16for FCC
information.
Rear Vision
Camera (RVC)
This vehicle may have an RVC
system. Read this entire section
before using it.
The RVC system can assist
the driver when backing up by
displaying a view of the area
behind the vehicle.
{WARNING
The Rear Vision Camera (RVC)
system does not replace driver
vision. RVC does not:
.Detect objects that are
outside the camera's field of
view, below the bumper,
or underneath the vehicle.
.Detect children, pedestrians,
bicyclists, or pets.
Do not back the vehicle by only
looking at the RVC screen, or use
the screen during longer, higher
speed backing maneuvers or
where there could be cross-traffic.
Your judged distances using the
screen will differ from actual
distances. (Continued)
WARNING (Continued)
So if you do not use proper care
before backing up, you could hit a
vehicle, child, pedestrian,
bicyclist, or pet, resulting in
vehicle damage, injury, or death.
Even though the vehicle has the
RVC system, always check
carefully before backing up by
checking behind and around the
vehicle.
An image appears on the navigation
screen with the message Check
Surroundings for Safety when the
vehicle is shifted into R (Reverse).
The navigation screen goes to the
previous screen after approximately
10 seconds once the vehicle is
shifted out of R (Reverse).

Driving and Operating 8-47
To cancel the delay, do one of the
following:
.Pressing a hard key on the
navigation system.
.Shifting in to P (Park).
.Reach a vehicle speed of
8 km/h (5 mph).
Turning the Rear Vision Camera
System On or Off
To turn the RVC system on or off:
1. Shift into P (Park).
2. Press the CONFIG button to enter the configure menu
options.
3. Select Display.
4. Select Rear Camera Options.
5. Select Camera. When a check mark appears next to the
Camera option, then the RVC
system is on. Symbols
The navigation system may have a
feature that lets the driver view
symbols on the navigation screen
while using the RVC. The Ultrasonic
Rear Park Assist (URPA) system
must not be disabled to use the
caution symbols. The error message
Rear Parking Assist Symbols
Unavailable may display if URPA
has been disabled and the symbols
have been turned on. See
Ultrasonic Parking Assiston
page 8‑40.

8-48 Driving and Operating
The symbols appear and may cover
an object when viewing the
navigation screen when an object is
detected by the URPA system.
To turn the symbols on or off:
1. Shift into P (Park).
2. Press the CONFIG button toenter the configure menu
options.
3. Select Display
4. Select Rear Camera Options.
5. Select Symbols. When a check mark appears next to the
Symbols option, symbols will
appear.
Guidelines
The RVC system has a guideline
overlay that can help the driver align
the vehicle when backing into a
parking spot. To turn the guidelines on or off:
1. Shift into P (Park).
2. Press the CONFIG button to
enter the configure menu
options.
3. Select Display
4. Select Rear Camera Options.
5. Select Guidelines. When a check mark appears next to the
Guidelines option, guidelines will
appear.
Rear Vision Camera Error
Messages
Service Rear Vision Camera
System: This message can display
when the system is not receiving
information it requires from other
vehicle systems.
If any other problem occurs or if a
problem persists, see your dealer/
retailer.Rear Vision Camera Location
The camera is located above the
license plate.
The area displayed by the camera is
limited, it does not display objects
that are close to either corner or
under the bumper and can vary
depending on vehicle orientation or
road conditions. The distance of the
image that appears on the screen is
different from the actual distance.
The following illustration shows the
field of view that the camera
provides.

Driving and Operating 8-49
A. View displayed by the camera.
B. Corner of the rear bumper.
When the System Does Not
Seem To Work Properly
The RVC system may not work
properly or display a clear image if:
.The RVC is turned off. See
“Turning the Rear Camera
System On or Off”earlier in this
section.
.It is dark.
.The sun or the beam of
headlamps are shining directly
into the camera lens.
.Ice, snow, mud, or anything else
builds up on the camera lens.
Clean the lens, rinse it with
water, and wipe it with a soft
cloth.
.The back of the vehicle is in an
accident, the position and
mounting angle of the camera
can change or the camera can
be affected. Be sure to have the
camera and its position and
mounting angle checked at your
dealer/retailer.
Fuel
Use of the recommended fuel is an
important part of the proper
maintenance of this vehicle. To help
keep the engine clean and maintain
optimum vehicle performance, we
recommend the use of gasoline
advertised as TOP TIER Detergent
Gasoline.
Look for the TOP TIER label on the
fuel pump to ensure gasoline meets
enhanced detergency standards
developed by auto companies. A list
of marketers providing TOP TIER
Detergent Gasoline can be found at
www.toptiergas.com.

8-50 Driving and Operating
The 8th digit of the Vehicle
Identification Number (VIN) shows
the code letter or number that
identifies the vehicle's engine.The VIN is at the top left of the
instrument panel. See
Vehicle
Identification Number (VIN)
on
page 11‑1.
Recommended Fuel
If the vehicle has a 2.4L L4 engine
(VIN Code C) or the 3.0L V6 engine
(VIN Code G), use regular unleaded
gasoline with a posted octane rating
of 87 or higher. If the octane rating
is less than 87, you might notice an
audible knocking noise when you
drive, commonly referred to as
spark knock. If this occurs, use a
gasoline rated at 87 octane or
higher as soon as possible. If you
are using gasoline rated at
87 octane or higher and you hear
heavy knocking, the engine needs
service.
If the vehicle has the 3.6L V6 engine
(VIN Code V), use premium
unleaded gasoline with a posted
octane rating of 91 or higher. You
can also use regular unleaded
gasoline rated at 87 octane or higher, but the vehicle's acceleration
could be slightly reduced, and you
might notice a slight audible
knocking noise, commonly referred
to as spark knock. If the octane is
less than 87, you might notice a
heavy knocking noise when you
drive. If this occurs, use a gasoline
rated at 87 octane or higher as soon
as possible. Otherwise, you could
damage the engine. If you are using
gasoline rated at 87 octane or
higher and you hear heavy
knocking, the engine needs service.
Gasoline Specifications
At a minimum, gasoline should meet
ASTM specification D 4814 in the
United States or CAN/CGSB-3.5
or 3.511 in Canada. Some
gasolines contain an
octane-enhancing additive called
methylcyclopentadienyl manganese
tricarbonyl (MMT). We recommend
against the use of gasolines
containing MMT. See
Fuel Additives
on page 8‑51for additional
information.