start stop button BUICK LACROSSE 2012 User Guide

Black plate (23,1)Buick LaCrosse Owner Manual - 2012
Driving and Operating 9-23
between each try, to allow the
cranking motor to cool down.
When the engine starts, let go of
the key or button, and the
accelerator. If the vehicle starts
briefly but then stops again, do
the same thing. This clears the
extra gasoline from the engine.
Do not race the engine
immediately after starting it.
Operate the engine and
transmission gently until the oil
warms up and lubricates all
moving parts.
Starting Procedure (Keyless
Access)
1. If the vehicle has the keyless access system, the transmitter
must be in the vehicle. Put your
foot on the brake pedal and
push the START button. When
the engine begins cranking, let
go of the button.
The idle speed will go down as
your engine gets warm. Do not
race the engine immediately
after starting it. Operate the engine and transmission gently
to allow the oil to warm up and
lubricate all moving parts.
If the transmitter is not in the
vehicle or something is
interfering with the transmitter,
the Driver Information Center
(DIC) will display a message.
See
Key and Lock Messages on
page 5‑39 for more information.
If the battery in the Remote
Keyless Entry (RKE) transmitter
needs replacing, the DIC will
display a message. The vehicle
can still be driven. See “Starting
the Vehicle with a Low
Transmitter Battery” inRemote
Keyless Entry (RKE) System
Operation on page 2‑4 for more
information.
The vehicle has a
Computer-Controlled Cranking
System. This feature assists in
starting the engine and protects
components. If the START
button is pressed, and then
released when the engine begins cranking, the engine
will continue cranking for a
few seconds or until the vehicle
starts. If the engine does not
start and the button is pressed
for many seconds, cranking will
be stopped after 15 seconds to
prevent cranking motor damage.
To prevent gear damage, this
system also prevents cranking if
the engine is already running.
Engine cranking can be stopped
by pressing the START button a
second time.
Notice: Cranking the engine for
long periods of time, by returning
the key to the START position
immediately after cranking has
ended, can overheat and damage
the cranking motor, and drain the
battery. Wait at least 15 seconds
between each try, to let the
cranking motor cool down.

Black plate (24,1)Buick LaCrosse Owner Manual - 2012
9-24 Driving and Operating
2. If the engine does not start afterfive to 10 seconds, especially in
very cold weather (below −18°C
or 0°F), it could be flooded with
too much gasoline. Try pushing
the accelerator pedal all the way
to the floor and holding it there
as you hold the key in START,
or press the START button, for
up to a maximum of 15 seconds.
Wait at least 15 seconds
between each try, to allow the
cranking motor to cool down.
When the engine starts, let go of
the key or button, and the
accelerator. If the vehicle starts
briefly but then stops again, do
the same thing. This clears the
extra gasoline from the engine.
Do not race the engine
immediately after starting it.
Operate the engine and
transmission gently until the oil
warms up and lubricates all
moving parts.eAssist Automatic Engine
Start/Stop
{WARNING
Exiting the vehicle, without first
shifting into P (Park), may cause
the vehicle to move, you or others
may be injured. Because the
vehicle has the automatic engine
start/stop feature, the vehicle's
engine might seem to be shut off;
however, once the brake pedal is
released, the engine will start up
again.
Shift to P (Park) and turn the
ignition to LOCK/OFF, before
exiting the vehicle.
Vehicles with eAssist have an
automatic engine start/stop feature.
After the engine is started and has
reached operating temperature, the
auto stop feature may cause the
engine to turn off when the brakes
are applied and the vehicle comes
to a complete stop. The vehicle may remain in auto stop for up to
two minutes. When the brake is
released or the accelerator pedal
applied, the engine will start. The
engine will continue to run until the
next auto stop.
AUTO STOP on the tachometer
signifies that the engine is in auto
stop mode. See
Tachometer on
page 5‑12 for more information.
When the vehicle is turned off, the
tachometer will move to OFF. If the
driver door is opened while in auto
stop mode, a chime will sound.
To restart the engine during auto
stop, release the brake pedal or
press the accelerator pedal. The
engine starts immediately. The
vehicle continues to run until the
next stop.
There are several conditions which
may prevent an auto stop or cause
an auto start.

Black plate (25,1)Buick LaCrosse Owner Manual - 2012
Driving and Operating 9-25
The Engine Will Remain
Running When:
.The engine, transmission,
or high voltage battery is not
warmed up yet.
.The outside temperature is less
than−20°C (−4°F).
.The air conditioning or defrost
system need the compressor to
maintain vehicle comfort. See
Dual Automatic Climate Control
System on page 8‑5 for more
information.
.The shift lever is in P (Park),
N (Neutral), R (Reverse),
or M (Manual Mode).
.The high voltage battery pack
charge is low.
.The hood is not fully closed.
.Brake pedal pressure is high.
.If the MIL is on, auto stop may
be prevented. The Engine Will Restart When:
.The brake pedal is released.
.The accelerator pedal is applied.
.Shifting out of D (Drive) to any
other gear.
.If the eco air conditioning button
is selected, the duration of the
auto stop will depend on the
outside temperature. This
economy mode improves fuel
economy by limiting the effects
of the air conditioning. The
warmer it is outside, the shorter
the time before the engine is
restarted to provide cabin
cooling.
.The climate control system is
turned from off to normal air
conditioning or defrost. See
Dual
Automatic Climate Control
System on page 8‑5 for more
information.
.The engine is required to run for
either heater or climate control
performance. See Dual
Automatic Climate Control
System on page 8‑5 for more
information.
.The high voltage battery pack
charge is low and requires
recharging.
.Auto stop time is greater than
two minutes.
.The hood is opened.

Black plate (32,1)Buick LaCrosse Owner Manual - 2012
9-32 Driving and Operating
The regular brake must be fully
applied first and then the shift lever
button pressed before shifting from
P (Park) when the ignition key is in
ON/RUN. If you cannot shift out of
P (Park), ease pressure on the shift
lever, then push the shift lever all
the way into P (Park) as you
maintain brake application. Then
press the shift lever button and
move the shift lever into another
gear. SeeShifting out of Park on
page 9‑29.
R (Reverse): Use this gear to
back up.
Notice: Shifting to R (Reverse)
while the vehicle is moving
forward could damage the
transmission. The repairs would
not be covered by the vehicle
warranty. Shift to R (Reverse) only
after the vehicle is stopped. To rock the vehicle back and forth to
get out of snow, ice, or sand without
damaging the transmission, see
If
the Vehicle Is Stuck on page 9‑11.
N (Neutral): In this position, the
engine does not connect with the
wheels. To restart the engine when
the vehicle is already moving, use
N (Neutral) only. Also, use
N (Neutral) when the vehicle is
being towed.
{WARNING
Shifting into a drive gear while the
engine is running at high speed is
dangerous. Unless your foot is
firmly on the brake pedal, the
vehicle could move very rapidly.
You could lose control and hit
people or objects. Do not shift
into a drive gear while the engine
is running at high speed. Notice:
Shifting out of P (Park) or
N (Neutral) with the engine
running at high speed may
damage the transmission. The
repairs would not be covered by
the vehicle warranty. Be sure the
engine is not running at high
speed when shifting the vehicle.
D (Drive): This position is for
normal driving. It provides the best
fuel economy. If more power is
needed for passing, and the
vehicle is:.Going less than 56 km/h
(35 mph), push the accelerator
pedal about halfway down.
.Going about 56 km/h (35 mph) or
more, push the accelerator all
the way down.

Black plate (39,1)Buick LaCrosse Owner Manual - 2012
Driving and Operating 9-39
dflashes to indicate that TCS is
active. See Traction Control System
(TCS)/StabiliTrak
®Light on
page 5‑23 for more information.
If there is a problem detected with
TCS, SERVICE TRACTION
CONTROL is displayed on the
Driver Information Center (DIC).
See Ride Control System Messages
on page 5‑40. When this message
is displayed and
dcomes on and
stays on, the vehicle is safe to drive
but the system is not operational.
Driving should be adjusted
accordingly.
If
dcomes on and stays on, reset
the system.
To reset:
1. Stop the vehicle.
2. Turn the engine off and wait 15 seconds.
3. Start the engine. If
dstill comes on and stays on, the
vehicle needs service.
Notice: Do not repeatedly brake
or accelerate heavily when TCS is
off. The vehicle's driveline could
be damaged.
TCS can be turned off by pressing
and releasing the TCS/StabiliTrak
button. When TCS is turned off,
i
comes on, and the appropriate DIC message also displays. See
Ride
Control System Messages on
page 5‑40. With TCS turned off, the
system does not limit wheel slip.
Driving should be adjusted
accordingly. See Traction Off Light
on page 5‑22 for more information.
Press and release the TCS/
StabiliTrak button again to turn the
system back on.
It may be necessary to turn the
system off if the vehicle gets stuck
in sand, mud, or snow and rocking
the vehicle is required. See If the
Vehicle Is Stuck on page 9‑11 for
more information. See also Winter
Driving on page 9‑9 for information
on using TCS when driving in snowy
or icy conditions.
Adding non‐GM accessories can
affect the vehicle performance. See
Accessories and Modifications on
page 10‑3 for more information.

Black plate (40,1)Buick LaCrosse Owner Manual - 2012
9-40 Driving and Operating
StabiliTrak®System
The vehicle may have a vehicle
stability enhancement system called
StabiliTrak. It is an advanced
computer-controlled system that
assists with directional control of the
vehicle in difficult driving conditions.
StabiliTrak activates when the
computer senses a difference
between the intended path and the
direction the vehicle is actually
traveling. StabiliTrak selectively
applies braking pressure to the
vehicle brakes to help steer the
vehicle in the intended direction.
StabiliTrak comes on automatically
whenever the vehicle is started. To
assist with directional control of the
vehicle, the system should always
be left on.
When StabiliTrak activates,
d
flashes on the instrument panel.
A noise may be heard or vibration
may be felt in the brake pedal. This
is normal. Continue to steer the
vehicle in the intended direction.See
Traction Control System (TCS)/
StabiliTrak
®Light on page 5‑23 for
more information.
If a problem is detected with
StabiliTrak, SERVICE
STABILITRAK is displayed on the
Driver Information Center (DIC).
See Ride Control System Messages
on page 5‑40. When this message
is displayed and
dcomes on and
stays on, the vehicle is safe to drive
but the system is not operational.
Driving should be adjusted
accordingly.
If
dcomes on and stays on, reset
the system.
To reset:
1. Stop the vehicle.
2. Turn the engine off and wait 15 seconds.
3. Start the engine.
If
dstill comes on and stays on, the
vehicle needs service.
.To turn off both StabiliTrak and
TCS, press and hold the TCS/
StabiliTrak button, located on the
instrument panel, until
iandg
illuminate and the appropriate
DIC message is displayed. See
Ride Control System Messages
on page 5‑40.

Black plate (59,1)Buick LaCrosse Owner Manual - 2012
Vehicle Care 10-59
.Replacement tires or wheels do
not match the original equipment
tires or wheels. Tires and wheels
other than those recommended
could prevent the TPMS from
functioning properly. SeeBuying
New Tires on page 10‑63.
.Operating electronic devices or
being near facilities using radio
wave frequencies similar to the
TPMS could cause the TPMS
sensors to malfunction.
If the TPMS is not functioning
properly it cannot detect or signal a
low tire condition. See your dealer
for service if the TPMS malfunction
light and DIC message comes on
and stays on.
TPMS Sensor Matching
Process
Each TPMS sensor has a unique
identification code. The identification
code needs to be matched to a new
tire/wheel position after rotating the
vehicle’s tires or replacing one or
more of the TPMS sensors. The
TPMS sensor matching process
should also be performed after
replacing a spare tire with a road
tire containing the TPMS sensor.
The malfunction light and the DIC
message should go off at the next
ignition cycle. The sensors are
matched to the tire/wheel positions,
using a TPMS relearn tool, in the
following order: driver side front tire,
passenger side front tire, passenger
side rear tire, and driver side rear.
See your dealer for service or to
purchase a relearn tool. There are two minutes to match the
first tire/wheel position, and
five minutes overall to match all four
tire/wheel positions. If it takes
longer, the matching process stops
and must be restarted.
The TPMS sensor matching
process is:
1. Set the parking brake.
2. Turn the ignition to ON/RUN with
the engine off.
3. Use the MENU button to select the Vehicle Information Menu in
the Driver Information
Center (DIC).
4. Use the thumbwheel to scroll to the Tire Pressure Menu Item
screen.
5. Press the SET/CLR button to begin the sensor matching
process.
A message asking if the process
should begin should appear.