2011 BUICK LACROSSE brake

Black plate (20,1)Buick LaCrosse Owner Manual - 2011
5-20 Instruments and Controls
If the light comes on while driving,
pull off the road and stop carefully.
The pedal may be harder to push or
it can go closer to the floor. It may
take longer to stop. Try turning off
and restarting the vehicle one or
two times. If the light is still on,
have the vehicle towed for service.
SeeAntilock Brake System (ABS)
Warning Light on page 5‑21 and
Towing the Vehicle on page 10‑89.
{WARNING
The brake system might not be
working properly if the brake
system warning light is on.
Driving with the brake system
warning light on can lead to a
crash. If the light is still on after
the vehicle has been pulled off
the road and carefully stopped,
have the vehicle towed for
service.
Electric Parking Brake
Light
EnglishMetric
For vehicles with the Electric
Parking Brake (EPB), the parking
brake status light comes on
when the brake is applied. If the
light continues flashing after the
parking brake is released, or while
driving, there is a problem with
the Electric Parking Brake system.
A SERVICE PARKING BRAKE
message may also display in the
Driver Information Center (DIC).
See Brake System Messages on
page 5‑33 for more information.
If the light does not come on,
or remains flashing, see your dealer.
For vehicles with the Electric
Parking Brake (EPB), the parking
brake warning light should come
on briefly when ignition is placed
in ON/RUN. If it does not come on,
then have it fixed so it will be ready
to warn if there is a problem.
If this light comes on, there is a
problem with a system on the
vehicle that is causing the parking
brake system to work at a reduced
level. The vehicle can still be driven,
but should be taken to a dealer
as soon as possible. See Parking
Brake on page 9‑33 for more
information.
For vehicles with the uplevel cluster,
this telltale displays in the Driver
Information Center (DIC) screen.

Black plate (21,1)Buick LaCrosse Owner Manual - 2011
Instruments and Controls 5-21
Antilock Brake System
(ABS) Warning Light
This light comes on briefly when the
engine is started.
If the light does not come on, have
it fixed so it will be ready to warn if
there is a problem.
If the ABS light stays on, turn the
ignition off.
If the light comes on while
driving, stop as soon as it is safely
possible and turn off the vehicle.Then start the engine again to reset
the system. If the ABS light stays
on, or comes on again while driving,
the vehicle needs service. A chime
may also sound when the light
comes on steady.
If the ABS light is the only light on,
the vehicle has regular brakes,
but the antilock brakes are not
functioning.
If both the ABS and the brake
system warning light are on, the
vehicle's antilock brakes are not
functioning and there is a problem
with the regular brakes. See your
dealer for service.
See
Brake System Warning Light on
page 5‑19.
See Brake System Messages on
page 5‑33 for all brake related DIC
messages.
Traction Off Light
This light comes on when the
Traction Control System (TCS)
has been turned off by pressing and
releasing the traction control button.
This light also comes on and the
system turns off if there is a problem
with the traction control system.
If the light comes on and stays on
for an extended period of time while
the system is turned on, the vehicle
needs service.
See Traction Control System (TCS)
on page 9‑36 andElectronic
Stability Control (ESC) on
page 9‑37 for more information.

Black plate (33,1)Buick LaCrosse Owner Manual - 2011
Instruments and Controls 5-33
Vehicle Messages
Messages displayed on the DIC
indicate the status of the vehicle
or some action that may be needed
to correct a condition. Multiple
messages may display one after
the other.
The messages that do not
require immediate action can
be acknowledged and cleared by
pressing SET/CLR. The messages
that require immediate action cannot
be cleared until that action is
performed. All messages should
be taken seriously and clearing
the messages does not correct
the problem.
Battery Voltage and
Charging Messages
BATTERY SAVER ACTIVE
This message displays when
the vehicle has detected that the
battery voltage is dropping beyond
a reasonable point. The battery
saver system starts reducing certain
features of the vehicle that you may
be able to notice. At the point that
features are disabled, this message
is displayed. It means that the
vehicle is trying to save the charge
in the battery. Turn off unnecessary
accessories to allow the battery to
recharge.
LOW BATTERY
This message is displayed when the
battery voltage is low. SeeBattery
on page 10‑27 for more information.
SERVICE BATTERY
CHARGING SYSTEM
This message is displayed
when there is a fault in the battery
charging system. Take the vehicle
to your dealer for service.
Brake System Messages
BRAKE FLUID LOW
This message is displayed when the
brake fluid level is low. See Brake
Fluid on page 10‑25.
PRESS BRAKE PEDAL TO
RELEASE PARK BRAKE
This message is displayed if you
attempt to release the electric
parking brake without the brake
pedal applied. See Parking Brake
on page 9‑33 for more information.

Black plate (34,1)Buick LaCrosse Owner Manual - 2011
5-34 Instruments and Controls
RELEASE PARK BRAKE
SWITCH
This message is displayed if the
electric parking brake is on while
the vehicle is in motion. Release
it before you attempt to drive.
SeeParking Brake on page 9‑33
for more information.
SERVICE BRAKE ASSIST
This message may be displayed
when there is a problem with
the brake boost assist system.
When this message is displayed,
the brake boost assist motor
might be heard operating and
you might notice pulsation in the
brake pedal. This is normal under
these conditions. Take the vehicle
to your dealer for service.
SERVICE PARKING BRAKE
This message is displayed when
there is a problem with the electric
parking brake. See Parking Brake
on page 9‑33 for more information.
Take the vehicle to your dealer.
Compass Messages
CAL
This message is displayed when
the compass needs to be calibrated.
See Compass on page 5‑5.
– – –
Three dashes will be displayed if the
compass needs service. See your
dealer for service.
Cruise Control Messages
APPLY BRAKE BEFORE
CRUISE
If this message displays when
attempting to activate cruise control,
apply the brake pedal and try again.
CRUISE SET TO XXX
This message displays when the
cruise control is set and shows the
speed it was set to. See Cruise
Control on page 9‑39 for more
information.
Door Ajar Messages
DRIVER DOOR OPEN
This message will display when the
driver door is open. Close the door
completely.
HOOD OPEN
This message will display when
the hood is open. Close the hood
completely.
LEFT REAR DOOR OPEN
This message will display when the
driver side rear door is open. Close
the door completely.
PASSENGER DOOR OPEN
This message will display when the
front passenger door is open. Close
the door completely.
RIGHT REAR DOOR OPEN
This message will display when the
passenger side rear door is open.
Close the door completely.

Black plate (1,1)Buick LaCrosse Owner Manual - 2011
Driving and Operating 9-1
Driving and
Operating
Driving Information
Defensive Driving . . . . . . . . . . . . . 9-2
Drunk Driving . . . . . . . . . . . . . . . . . 9-2
Control of a Vehicle . . . . . . . . . . . 9-3
Braking . . . . . . . . . . . . . . . . . . . . . . . 9-3
Steering . . . . . . . . . . . . . . . . . . . . . . . 9-4
Off-Road Recovery . . . . . . . . . . . . 9-6
Loss of Control . . . . . . . . . . . . . . . . 9-6
Driving on Wet Roads . . . . . . . . . 9-7
Highway Hypnosis . . . . . . . . . . . . 9-8
Hill and Mountain Roads . . . . . . 9-8
Winter Driving . . . . . . . . . . . . . . . . . 9-9
If the Vehicle is Stuck . . . . . . . . 9-11
Vehicle Load Limits . . . . . . . . . . 9-12
Starting and Operating
New Vehicle Break-In . . . . . . . . 9-16
Ignition Positions(Key Access) . . . . . . . . . . . . . . . 9-17
Ignition Positions (Keyless Access) . . . . . . . . . . . 9-19
Starting the Engine . . . . . . . . . . 9-20
Engine Heater . . . . . . . . . . . . . . . 9-23
Retained Accessory Power (RAP) . . . . . . . . . . . . . . . 9-24
Shifting Into Park . . . . . . . . . . . . 9-25
Shifting Out of Park . . . . . . . . . . 9-26
Parking Over Things That Burn . . . . . . . . . . . . . . . . . . 9-27
Engine Exhaust
Engine Exhaust . . . . . . . . . . . . . . 9-27
Running the Vehicle WhileParked . . . . . . . . . . . . . . . . . . . . . 9-28
Automatic Transmission
Automatic Transmission . . . . . 9-28
Manual Mode . . . . . . . . . . . . . . . . 9-30
Drive Systems
All-Wheel Drive . . . . . . . . . . . . . . 9-31
Brakes
Antilock BrakeSystem (ABS) . . . . . . . . . . . . . . 9-32
Parking Brake . . . . . . . . . . . . . . . 9-33
Brake Assist . . . . . . . . . . . . . . . . . 9-35
Hill Start Assist (HSA) . . . . . . . 9-35
Ride Control Systems
Traction Control System (TCS) . . . . . . . . . . . . . . 9-36
Electronic Stability Control (ESC) . . . . . . . . . . . . . . 9-37
Limited-Slip Differential . . . . . . 9-38
Selective Ride Control . . . . . . . 9-38
Cruise Control
Cruise Control . . . . . . . . . . . . . . . 9-39
Object Detection Systems
Ultrasonic Parking Assist . . . . 9-42
Side Blind Zone Alert (SBZA) . . . . . . . . . . . . . . . 9-44
Rear Vision Camera (RVC) . . . . . . . . . . . . . 9-46

Black plate (3,1)Buick LaCrosse Owner Manual - 2011
Driving and Operating 9-3
Death and injury associated with
drinking and driving is a global
tragedy.
Alcohol affects four things that
anyone needs to drive a vehicle:
judgment, muscular coordination,
vision, and attentiveness.
Police records show that
almost 40 percent of all motor
vehicle-related deaths involve
alcohol. In most cases, these
deaths are the result of someone
who was drinking and driving.
In recent years, more than
17,000 annual motor vehicle-related
deaths have been associated with
the use of alcohol, with about
250,000 people injured.
For persons under 21, it is against
the law in every U.S. state to drink
alcohol. There are good medical,
psychological, and developmental
reasons for these laws.
The obvious way to eliminate the
leading highway safety problem is
for people never to drink alcohol
and then drive.Medical research shows that
alcohol in a person's system
can make crash injuries worse,
especially injuries to the brain,
spinal cord, or heart. This means
that when anyone who has been
drinking
—driver or passenger —is
in a crash, that person's chance of
being killed or permanently disabled
is higher than if the person had not
been drinking.
Control of a Vehicle
The following three systems
help to control the vehicle while
driving —brakes, steering, and
accelerator. At times, as when
driving on snow or ice, it is easy to
ask more of those control systems
than the tires and road can provide.
Meaning, you can lose control of
the vehicle. See Traction Control
System (TCS) on page 9‑36.
Adding non‐dealer accessories
can affect vehicle performance.
See Accessories and Modifications
on page 10‑3.
Braking
See Brake System Warning Light on
page 5‑19.
Braking action involves perception
time and reaction time. Deciding
to push the brake pedal is
perception time. Actually doing
it is reaction time.
Average reaction time is about
three‐fourths of a second.
But that is only an average.
It might be less with one driver
and as long as two or three seconds
or more with another. Age, physical
condition, alertness, coordination,
and eyesight all play a part. So do
alcohol, drugs, and frustration.
But even in three‐fourths of a
second, a vehicle moving at
100 km/h (60 mph) travels 20 m
(66 ft). That could be a lot of
distance in an emergency, so
keeping enough space between
the vehicle and others is important.

Black plate (4,1)Buick LaCrosse Owner Manual - 2011
9-4 Driving and Operating
And, of course, actual stopping
distances vary greatly with the
surface of the road, whether it is
pavement or gravel; the condition
of the road, whether it is wet, dry,
or icy; tire tread; the condition of the
brakes; the weight of the vehicle;
and the amount of brake force
applied.
Avoid needless heavy
braking. Some people drive in
spurts—heavy acceleration
followed by heavy braking —rather
than keeping pace with traffic.
This is a mistake. The brakes
might not have time to cool
between hard stops. The brakes
will wear out much faster with a
lot of heavy braking. Keeping pace
with the traffic and allowing realistic
following distances eliminates a lot
of unnecessary braking. That means
better braking and longer brake life. If the engine ever stops while
the vehicle is being driven, brake
normally but do not pump the
brakes. If the brakes are pumped,
the pedal could get harder to push
down. If the engine stops, there
will still be some power brake assist
but it will be used when the brake
is applied. Once the power assist is
used up, it can take longer to stop
and the brake pedal will be harder
to push.
Adding non‐dealer accessories
can affect vehicle performance.
See
Accessories and Modifications
on page 10‑3.
Steering
Power Steering
If power steering assist is lost
because the engine stops or the
power steering system is not
functioning, the vehicle can be
steered but it will take more effort.
Speed Variable Assist Steering
The vehicle has a steering system
that varies the amount of effort
required to steer the vehicle in
relation to the speed of the vehicle.
The amount of steering effort
required is less at slower
speeds to make the vehicle more
maneuverable and easier to park.
At faster speeds, the steering effort
increases to provide a sport-like
feel to the steering. This provides
maximum control and stability.
If the vehicle seems harder to steer
than normal when parking or driving
slowly, there may be a problem
with the system. You will still have
power steering, but steering will be
stiffer than normal at slow speeds.
See your dealer for service.

Black plate (5,1)Buick LaCrosse Owner Manual - 2011
Driving and Operating 9-5
Steering Tips
It is important to take curves at a
reasonable speed.
Traction in a curve depends on
the condition of the tires and the
road surface, the angle at which the
curve is banked, and vehicle speed.
While in a curve, speed is the one
factor that can be controlled.
If there is a need to reduce speed,
do it before entering the curve, while
the front wheels are straight.
Try to adjust the speed so you can
drive through the curve. Maintain a
reasonable, steady speed. Wait to
accelerate until out of the curve,
and then accelerate gently into
the straightaway.
Steering in Emergencies
There are times when steering
can be more effective than braking.
For example, you come over a hill
and find a truck stopped in your
lane, or a car suddenly pulls out
from nowhere, or a child darts out
from between parked cars and stops
right in front of you. These problems
can be avoided by braking—if you
can stop in time. But sometimes you
cannot stop in time because there
is no room. That is the time for
evasive action —steering around
the problem.
The vehicle can perform very
well in emergencies like these.
First apply the brakes. See Braking
on page 9‑3. It is better to remove
as much speed as possible from
a collision. Then steer around
the problem, to the left or right
depending on the space available.
An emergency like this requires
close attention and a quick decision.
If holding the steering wheel at
the recommended 9 and 3 o'clock
positions, it can be turned a full
180 degrees very quickly without
removing either hand. But you have
to act fast, steer quickly, and just as
quickly straighten the wheel once
you have avoided the object.
The fact that such emergency
situations are always possible is a
good reason to practice defensive
driving at all times and wear safety
belts properly.