2018 BUICK LACROSSE auto start

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-10999169) -
2018 - crc - 3/28/17
Climate Controls 155
To change the current mode, select
one or more of the following:
6:Air is directed to the floor
outlets, with some air to the
windshield and side windows.
Y: Air is directed to the instrument
panel outlets.
X: Clears the windows of fog or
moisture. Air is directed to the
windshield.
1MAX : Air is directed to the
windshield, the fan runs at a higher
speed, and the temperature of the
air is increased if not already at
maximum. This mode overrides the
previous mode selected and clears
fog or frost from the windshield
more quickly. When the control is
pressed again, the system returns
to the previous mode setting and
fan speed.
For best results, clear all snow and
ice from the windshield before
defrosting.
For eAssist vehicles that have the
auto defog feature, Auto Stops can
occur in defrost mode. In this mode, the Auto Stops are shorter and less
frequent than other air delivery
modes to prevent window fogging.
A/C (Air Conditioning) :
Touch A/C
on the climate control display to
cycle between the MAX, ECO, and
OFF modes. The MAX, ECO or OFF
indicator will appear on the display.
If the fan is turned off, the air
conditioner will not run and the
indicator light will turn off.
Touch AUTO to return to automatic
operation and the air conditioner
runs automatically as needed. The
A/C will return to ECO a/c operation.
For MAX a/c, touch A/C. Auto Stops
will occur less frequently, be shorter,
and will not occur in extremely warm
weather.
For ECO a/c, touch A/C again. This
setting balances fuel economy and
air conditioning comfort. In warm
weather conditions, Auto Stops may
occur more frequently, last longer,
and the vehicle interior may be
warmer during Auto Stops as
compared to the MAX A/C setting.
This setting allows higher humidity inside the vehicle and window
fogging may occur before the
engine restarts.
@:
Press to turn on recirculation.
An indicator light comes on. Air is
recirculated to quickly cool the
inside of the vehicle or to reduce the
entry of outside air and odors.
If selected during cool or cold
weather, the windshield and
windows may fog. Turn off
recirculation to help clear the
windshield and windows.
If equipped, the Air Quality Sensor
may operate the recirculation mode
automatically. See “Climate and Air
Quality” underVehicle
Personalization 0133.
Auto Defog : If equipped, the
climate control system may have a
sensor to automatically detect high
humidity inside the vehicle. When
high humidity is detected, the
climate control system may adjust to
outside air supply and turn on the
air conditioner. The fan speed may
slightly increase to help prevent
fogging. If the climate control
system does not detect possible

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-10999169) -
2018 - crc - 3/28/17
156 Climate Controls
window fogging, it returns to normal
operation. For eAssist vehicles,
there may be shorter and less
frequent Auto Stops when auto
defog is in use.
To turn Auto Defog off or on, see
“Climate and Air Quality”under
Vehicle Personalization 0133.
Ionizer : If equipped with an ionizer,
this feature helps to clean the air
inside the vehicle and remove
contaminants; such as pollen,
odors, and dust. If the climate
control system is on and the ionizer
is enabled, the ionizer status
indicator will be lit on the climate
control display. To turn the ionizer
on or off, see “Climate and Air
Quality” underVehicle
Personalization 0133.
Rear Window Defogger
K:Press to turn the rear window
defogger on or off. An indicator light
on the control comes on to show
that the rear window defogger is on.
The rear window defogger only
works when the engine is running.
It turns off when the ignition is
turned off or in ACC/ACCESSORY. The rear window defogger can be
set to automatic operation. See
“Climate and Air Quality”
under
Vehicle Personalization 0133.
When Auto Rear Defog is selected,
the rear window defogger turns on
automatically when the interior
temperature is cold and the outside
temperature is about 4 °C (40 °F)
and below. The auto rear defogger
turns off automatically after about
10 minutes, or after five minutes if
the outside temperature is not
as cold.
For eAssist vehicles, auto rear
defog will only run during a remote
start and the feature is not available
in the Vehicle Personalization menu.
The upper gridlines on the rear
window are antenna lines and are
not intended to heat when the
defogger is activated.
If the vehicle is equipped with
heated outside mirrors, they turn on
when the rear window defogger
control is on and help to clear fog or
frost from the surface of the mirror.
See Heated Mirrors 045.
Caution
Do not try to clear frost or other
material from the inside of the
front windshield and rear window
with a razor blade or anything
else that is sharp. This may
damage the rear window
defogger grid and affect the
radio's ability to pick up stations
clearly. The repairs would not be
covered by the vehicle warranty.
Heated and Ventilated Seats
LorM:If equipped, pressLorMto heat the driver or passenger seat.
{orC:If equipped, press{orCto ventilate the driver or
passenger seat. See Heated and
Ventilated Seats 012.
Remote Start Climate Control
Operation : If equipped with remote
start, the climate control system
may run when the vehicle is started
remotely. If equipped with heated or
ventilated seats, they may come on

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-10999169) -
2018 - crc - 3/28/17
Climate Controls 157
during a remote start.
SeeRemote Vehicle Start 034 and
Heated and Ventilated Seats 012.
Sensors
The solar sensor on top of the
instrument panel near the
windshield, monitors the solar heat.
Do not cover the solar sensor or the
system will not work properly.
The climate control system uses the
sensor information to adjust the
temperature, fan speed,
recirculation, and air delivery mode
for best comfort.
Do not cover the sensor; otherwise
the automatic climate control system
may not work properly.
Air Vents
Use the slider knob on the air vent
louvers to change the amount and
direction of the airflow.
To close the outboard air vents,
move the slider knob to the full
outboard position.
To close the center air vents, move
the slide knob to the full inboard
position.
To close the rear passenger air
vents, move the slider knob to the
full inboard position. Operation Tips
.
Clear away any ice, snow,
or leaves from air inlets at the
base of the windshield that could
block the flow of air into the
vehicle.
. Clear snow off the hood to
improve visibility and help
decrease moisture drawn into
the vehicle.
. Keep all outlets open whenever
possible for best system
performance.
. Keep the path under all seats
clear of objects to help circulate
the air inside the vehicle more
effectively.
. Use of non-GM approved hood
deflectors can adversely affect
the performance of the system.

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-10999169) -
2018 - crc - 3/28/17
Driving and Operating 159
Driving and
Operating
Driving Information
Distracted Driving . . . . . . . . . . . . 160
Defensive Driving . . . . . . . . . . . . . 161
Drunk Driving . . . . . . . . . . . . . . . . . 161
Control of a Vehicle . . . . . . . . . . . 161
Braking . . . . . . . . . . . . . . . . . . . . . . . 161
Steering . . . . . . . . . . . . . . . . . . . . . . 162
Off-Road Recovery . . . . . . . . . . . 162
Loss of Control . . . . . . . . . . . . . . . 163
Driving on Wet Roads . . . . . . . . 163
Hill and Mountain Roads . . . . . 164
Winter Driving . . . . . . . . . . . . . . . . 165
If the Vehicle Is Stuck . . . . . . . . 166
Vehicle Load Limits . . . . . . . . . . . 166
Starting and Operating
New Vehicle Break-In . . . . . . . . . 170
Ignition Positions . . . . . . . . . . . . . 170
Starting the Engine . . . . . . . . . . . 172
Engine Heater . . . . . . . . . . . . . . . . 175
Retained AccessoryPower (RAP) . . . . . . . . . . . . . . . . 176
Shifting Into Park . . . . . . . . . . . . . 176
Shifting out of Park . . . . . . . . . . . 177
Parking over Things That Burn . . . . . . . . . . . . . . . . . . . 179 Extended Parking . . . . . . . . . . . . 179
Engine Exhaust
Engine Exhaust . . . . . . . . . . . . . . 180
Running the Vehicle While
Parked . . . . . . . . . . . . . . . . . . . . . . 180
Automatic Transmission
Automatic Transmission . . . . . . 181
Manual Mode . . . . . . . . . . . . . . . . . 185
Drive Systems
All-Wheel Drive . . . . . . . . . . . . . . . 187
Brakes
Antilock BrakeSystem (ABS) . . . . . . . . . . . . . . . 187
Electric Parking Brake . . . . . . . . 188
Brake Assist . . . . . . . . . . . . . . . . . . 189
Automatic Vehicle Hold (AVH) . . . . . . . . . . . . . . . . . . 189
Ride Control Systems
Traction Control/ElectronicStability Control . . . . . . . . . . . . . 190
Selective Ride Control . . . . . . . . 192
Cruise Control
Cruise Control . . . . . . . . . . . . . . . . 193
Adaptive Cruise Control . . . . . . 195
Driver Assistance Systems
Driver Assistance Systems . . . 203 Assistance Systems for
Parking or Backing . . . . . . . . . . 204
Assistance Systems for Driving . . . . . . . . . . . . . . . . . . . . . . 207
Forward Collision Alert (FCA)
System . . . . . . . . . . . . . . . . . . . . . . 208
Forward Automatic Braking (FAB) . . . . . . . . . . . . . . . 210
Front Pedestrian Braking (FPB) System . . . . . . . . . . . . . . . . . . . . . . 211
Side Blind Zone Alert (SBZA) . . . . . . . . . . . . . . . . 213
Lane Change Alert (LCA) . . . . . 214
Lane Departure Warning (LDW) . . . . . . . . . . . . . 215
Lane Keep Assist (LKA) . . . . . . 216
Fuel
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . 218
California Fuel Requirements . . . . . . . . . . . . . . . 218
Fuels in Foreign Countries . . . 219
Fuel Additives . . . . . . . . . . . . . . . . 219
Filling the Tank . . . . . . . . . . . . . . . 219
Filling a Portable Fuel Container . . . . . . . . . . . . . . . . . . . 220
Trailer Towing
General TowingInformation . . . . . . . . . . . . . . . . . . 221

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-10999169) -
2018 - crc - 3/28/17
170 Driving and Operating
Starting and
Operating
New Vehicle Break-In
Caution
The vehicle does not need an
elaborate break-in. But it will
perform better in the long run if
you follow these guidelines:. Do not drive at any one
constant speed, fast or slow,
for the first 805 km (500 mi).
Do not make full-throttle
starts. Avoid downshifting to
brake or slow the vehicle.
. Avoid making hard stops for
the first 322 km (200 mi) or
so. During this time the new
brake linings are not yet
broken in. Hard stops with
new linings can mean
premature wear and earlier
replacement. Follow this
(Continued)
Caution (Continued)
breaking-in guideline every
time you get new brake
linings.
Following break-in, engine speed
and load can be gradually
increased.
Ignition Positions
The vehicle has an electronic
keyless ignition with pushbutton
start. If the pushbutton start is not
working, the vehicle may be near a
strong radio antenna signal causing
interference to the Remote Keyless
Entry (RKE) system. See
Remote
Keyless Entry (RKE) System
Operation 028.
To shift out of P (Park), the ignition
must be on and the brake pedal
must be applied.
Stopping the Engine/OFF (No
Indicator Light) : When the vehicle
is stopped, press ENGINE START/
STOP once to turn the vehicle off.
The transmission will shift to
P (Park) automatically.
If the vehicle is in P (Park), the
ignition will turn off, and Retained
Accessory Power (RAP) will remain
active. See Retained Accessory
Power (RAP) 0176.
{Warning
Turning off the vehicle while
moving may cause loss of power
assist in the brake and steering
(Continued)

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-10999169) -
2018 - crc - 3/28/17
Driving and Operating 171
Warning (Continued)
systems and disable the airbags.
While driving, only shut the
vehicle off in an emergency.
If the ignition must be shut off in an
emergency: 1. Brake using a firm and steady pressure. Do not pump the
brakes repeatedly. This may
deplete power assist, requiring
increased brake pedal force.
2. Shift the vehicle to N (Neutral). This can be done while the
vehicle is moving. After shifting
to N (Neutral), firmly apply the
brakes and steer the vehicle to
a safe location.
3. Come to a complete stop, shift to P (Park), and press ENGINE
START/STOP.
4. Set the parking brake. See Electric Parking Brake 0188. If the vehicle cannot be pulled over
and must be shut off while driving,
press and hold ENGINE START/
STOP for longer than two seconds,
or press twice in five seconds.
ACC/ACCESSORY (Amber
Indicator Light) :
This mode allows
you to use some electrical
accessories when the ignition is off.
With the ignition off, pressing
ENGINE START/STOP once without
the brake pedal applied will place
the ignition system in ACC/
ACCESSORY.
The ignition will switch from ACC/
ACCESSORY to OFF after
10 minutes to prevent battery
rundown.
ON/RUN/START (Green Indicator
Light) : This mode is for driving and
starting. With the ignition off and the
brake pedal applied, pressing
ENGINE START/STOP once will
place the ignition system in ON/
RUN/START. Once engine cranking
begins, release the button. Engine
cranking will continue until the engine starts. See
Starting the
Engine 0172. The ignition will then
remain in ON/RUN.
Service Mode
This power mode is available for
service and diagnostics. See
Automatic Transmission 0181.
Service Mode is also available to
verify the proper operation of the
malfunction indicator lamp as may
be required for emission inspection
purposes. With the ignition off and
the brake pedal not applied,
pressing and holding ENGINE
START/STOP for more than
five seconds will place the vehicle in
Service Mode. The instruments and
audio systems will operate as they
do in ON/RUN, but the vehicle will
not be able to be driven. The engine
will not start in Service Mode. Press
ENGINE START/STOP again to turn
the vehicle off.

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-10999169) -
2018 - crc - 3/28/17
Driving and Operating 173
starting it. Operate the engine
and transmission gently until
the oil warms up and lubricates
all moving parts.
Stop/Start System
{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 may have an auto engine
stop/start 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 off before exiting the
vehicle.
The vehicle may be equipped with a
fuel saving Stop/Start system to
shut off the engine to help
conserve fuel.
Auto Stop (Vehicles without
eAssist)
If equipped, when the brakes are
applied and the vehicle is at a
complete stop, the engine may turn
off. When stopped, the tachometer
displays AUTO STOP. See
Tachometer 0112. When the brake
pedal is released or the accelerator
pedal is pushed, the engine will
restart.
The vehicle may remain in Auto
Stop even after it is shifted into
P (Park). Auto Stop will be
maintained until the door is opened
or the seat belt is unbuckled. There are several conditions that
may prevent an Auto Stop or cause
an Auto Start.
Auto Stop may be deactivated if:
.
A minimum vehicle speed is not
reached.
. The engine or transmission is
not at the required operating
temperature.
. The outside temperature is not
in the required operating range,
typically below −10 °C (14 °F) or
above 50 °C (122 °F).
. The transmission is in any gear
other than D (Drive).
. The battery charge is low.
. The battery has been
disconnected.
. The system may not be able to
shut off the engine in order to
maintain the air conditioning
comfort level or defrost system
settings. See Dual Automatic
Climate Control System 0152.
To maximize fuel economy, use
the ECO air conditioning mode.

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-10999169) -
2018 - crc - 3/28/17
174 Driving and Operating
.The Auto Stop time is greater
than two minutes.
Auto Stop (Vehicles with
eAssist)
If equipped, when the brakes are
applied and the vehicle is at a
complete stop, the engine may turn
off. When stopped, the tachometer
displays AUTO STOP. See
Tachometer 0112. When the brake
pedal is released or the accelerator
pedal is pushed, the engine will
restart.
The vehicle may remain in Auto
Stop for up to two minutes. The vehicle may remain in Auto
Stop even after it is shifted into
P (Park). If the driver opens the door
or unbuckles the seat belt the
vehicle will exit Auto Stop and
restart the engine.
There are several conditions that
may prevent an Auto Stop or cause
an Auto Start.
Auto Stop may be
deactivated when:
.
The engine, transmission,
or high voltage battery is not at
the required operating
temperature.
. The outside temperature is not
in the required operating range,
typically below −20 °C (−4 °F).
. The system may not be able to
shut off the engine in order to
maintain the air conditioning
comfort level or defrost system
settings. See Dual Automatic
Climate Control System 0152.
To maximize fuel economy, use
the ECO air conditioning mode. .
The transmission is in any gear
other than D (Drive).
. The high voltage battery charge
is low.
. The hood is not fully closed.
. The malfunction indicator lamp
is on.
. High humidity is detected.
The Engine Will Restart when:
. The brake pedal is released.
. The accelerator pedal is applied.
. Shifting out of D (Drive) to any
other gear besides P (Park).
. The air conditioning or defrost
system needs the compressor to
maintain interior comfort. See
Dual Automatic Climate Control
System 0152. To maximize fuel
economy, use the ECO air
conditioning mode.
. The engine is required to run for
either heater or climate control
performance, or the climate
control system is turned from off