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Black plate (34,1)Buick LaCrosse Owner Manual - 2011
9-34 Driving and Operating
EPB Apply
The EPB can be applied any time
the vehicle is stopped. The EPB is
applied by momentarily lifting up on
the EPB switch. Once fully applied,
the parking brake status light will be
on. While the brake is being applied,
the status light will flash until full
apply is reached. If the light does
not come on, or remains flashing,
you need to have the vehicle
serviced. Do not drive the vehicle
if the parking brake status light
is flashing. See your dealer. See
Electric Parking Brake Light on
page 5‑20for more information.
If the EPB is applied while the
vehicle is in motion, a chime will
sound, and the DIC message
RELEASE PARK BRAKE SWITCH
will be displayed. The vehicle will
decelerate as long as the switch is
held in the up position. Releasing
the EPB switch during the
deceleration will release the parking
brake. If the switch is held in the up
position until the vehicle comes to a
stop, the EPB will remain applied. If the parking brake status light
flashes continuously, the EPB is
only partially applied or released,
or there is a problem with the EPB.
The DIC message SERVICE PARK
BRAKE will be displayed. If this light
flashes continuously, release the
EPB, and attempt to apply it again.
If this light continues to flash, do not
drive the vehicle. See your dealer.
If the parking brake warning light is
on, the EPB has detected an error
in another system and is operating
with reduced functionality. To apply
the EPB when this light is on, lift up
on the EPB switch and hold it in the
up position. Full application of the
parking brake by the EPB system
may take a longer period of time
than normal when this light is on.
Continue to hold the switch until the
parking brake status light remains
on. If the parking brake warning
light is on, see your dealer.
If the EPB fails to apply, the rear
wheels should be blocked to
prevent vehicle movement.
EPB Release
To release the EPB, place the
ignition in the ON/RUN position,
apply and hold the brake pedal,
and push down momentarily on
the EPB switch. If you attempt to
release the EPB without the brake
pedal applied, a chime will sound,
and the DIC message PRESS
BRAKE PEDAL TO RELEASE
PARK BRAKE will be displayed.
The EPB is released when the
parking brake status light is off.
If the parking brake warning light
is on, the EPB has detected an
error in another system and is
operating with reduced functionality.
To release the EPB when this light
is on, push down on the EPB switch
and hold it in the down position.
EPB release may take a longer
period of time than normal when
this light is on. Continue to hold the
switch until the parking brake status
light is off. If the light is on, see your
dealer.

Black plate (43,1)Buick LaCrosse Owner Manual - 2011
Driving and Operating 9-43
PARK ASSIST OFF displays on
the Driver Information Center (DIC)
to indicate that URPA is off. The
message disappears after a short
period of time.
Turning the System On and Off
The URPA system can be turned on
and off using the park assist button
located next to the shift lever.
The park assist button lights up
when the system is on and turns
off when it has been disabled.
URPA defaults to the on setting
each time the vehicle is started.
When the System Does Not
Seem to Work Properly
SERVICE PARK ASSIST:If this
message occurs, take the vehicle
to your dealer to repair the system.
PARK ASSIST OFF: If the URPA
system does not activate due to a
temporary condition, the message
displays on the DIC. See Driver
Information Center (DIC) on
page 5‑25 for more information.
This can occur under the following
conditions:
.The driver has disabled the
system.
.The ultrasonic sensors are not
clean. Keep the vehicle's rear
bumper free of mud, dirt, snow,
ice, and slush. For cleaning
instructions, see Exterior Care
on page 10‑92.
.An object was hanging out of the
trunk during the last drive cycle.
Once the object is removed,
URPA will return to normal
operation.
.The vehicle's bumper is
damaged. Take the vehicle to
your dealer 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 40 km/h
(25 mph), take the vehicle to your
dealer.

Black plate (44,1)Buick LaCrosse Owner Manual - 2011
9-44 Driving and Operating
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.
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.
SBZA Detection Zones
The SBZA sensor covers a
zone of approximately one lane
over from both sides of the vehicle,
or 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.

Black plate (45,1)Buick LaCrosse Owner Manual - 2011
Driving and Operating 9-45
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.
SeeVehicle Personalization on
page 5‑39 for more information.
If the SBZA is disabled by the
driver, the SBZA mirror displays will
not light up during normal driving.
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.
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, or slush, or in
heavy rainstorms. For cleaning
instructions, see
Exterior Care on
page 10‑92. If the infotainment
display still shows the SIDE
BLIND ZONE SYS. UNAVAILABLE
message after cleaning the bumper,
see your dealer. 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.

Black plate (46,1)Buick LaCrosse Owner Manual - 2011
9-46 Driving and Operating
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,
or slush. 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 10‑92. 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.
FCC Information
See Radio Frequency Statement on
page 13‑20 for 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.
(Continued)

Black plate (47,1)Buick LaCrosse Owner Manual - 2011
Driving and Operating 9-47
WARNING (Continued)
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.
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).
To cancel the delay, do one of the
following:
.Press a hard key on the
navigation system.
.Shift into 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 checkmark appears next to the
Camera option, then the RVC
system is on.

Black plate (48,1)Buick LaCrosse Owner Manual - 2011
9-48 Driving and Operating
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. SeeUltrasonic Parking Assist
on page 9‑42.
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
to enter the configure menu
options.
3. Select Display.
4. Select Rear Camera Options.
5. Select Symbols. When a checkmark 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
checkmark 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.

Black plate (49,1)Buick LaCrosse Owner Manual - 2011
Driving and Operating 9-49
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.
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.

Black plate (11,1)Buick LaCrosse Owner Manual - 2011
Vehicle Care 10-11
Selecting the Right Engine Oil
Selecting the right engine oil
depends on both the proper oil
specification and viscosity grade:
Specification
Use and ask for engine oils
with the dexos™certification mark.
Oils meeting the requirements of
the vehicle should have the dexos
certification mark on the container.
This certification mark indicates that
the oil has been approved to the
dexos specification.
This vehicle was filled at the factory
with dexos‐approved engine oil.
Notice: Use only engine oil
that is approved to the dexos
specification or an equivalent
engine oil of the appropriate
viscosity grade. Engine oils
approved to the dexos
specification will show the
dexos symbol on the container. Failure to use the recommended
engine oil or equivalent can
result in engine damage not
covered by the vehicle warranty.
If you are unsure whether the
oil is approved to the dexos
specification, ask your service
provider.
Use of Substitute Engine Oils if
dexos is unavailable: In the event
that dexos‐approved engine oil is
not available at an oil change or
for maintaining proper oil level,
you may use substitute engine oil
displaying the API Starburst symbol
and of SAE 5W-30 viscosity grade.

Black plate (13,1)Buick LaCrosse Owner Manual - 2011
Vehicle Care 10-13
Engine Oil Additives/Engine
Oil Flushes
Do not add anything to the oil.
The recommended oils with the
dexos specification and displaying
the dexos certification mark are all
that is needed for good performance
and engine protection.
Engine oil system flushes are not
recommended and could cause
engine damage not covered by
the vehicle warranty.
What to Do with Used Oil
Used engine oil contains certain
elements that can be unhealthy for
your skin and could even cause
cancer. Do not let used oil stay on
your skin for very long. Clean your
skin and nails with soap and water,
or a good hand cleaner. Wash or
properly dispose of clothing or rags
containing used engine oil. See the
manufacturer's warnings about the
use and disposal of oil products.
Used oil can be a threat to the
environment. If you change your
own oil, be sure to drain all the
oil from the filter before disposal.
Never dispose of oil by putting
it in the trash or pouring it on the
ground, into sewers, or into streams
or bodies of water. Recycle it by
taking it to a place that collects
used oil.
Engine Oil Life System
When to Change Engine Oil
This vehicle has a computer system
that indicates when to change the
engine oil and filter. This is based
on engine revolutions and engine
temperature, and not on mileage.
Based on driving conditions, the
mileage at which an oil change is
indicated can vary considerably.
For the oil life system to work
properly, the system must be reset
every time the oil is changed.
When the system has calculated
that oil life has been diminished,
it indicates that an oil change is
necessary. A CHANGE ENGINE
OIL SOON message comes on.