trunk BUICK LACROSSE 2015 User Guide

Black plate (16,1)Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7707475) - 2015 - CRC - 10/9/14
2-16 Keys, Doors, and Windows
will bypass the 30-second delay
and immediately arm the alarm
system.
The vehicle alarm system will not
arm if the doors are locked with
the key.
If the driver door is opened without
first unlocking the RKE transmitter,
the horn will chirp and the lights will
flash to indicate pre-alarm. If the
vehicle is not started, or the door is
not unlocked by pressing
Kon the
RKE transmitter during the
10-second pre-alarm, the alarm will
be activated.
The alarm will also be activated if a
passenger door, the trunk, or the
hood is opened without first
disarming the system. When the
alarm is activated, the turn signals
flash and the horn sounds for about
30 seconds. The alarm system will
then re-arm to monitor for the next
unauthorized event.
Disarming the Alarm System
To disarm the alarm system, or turn
off the alarm if it has been activated,
do one of the following:
.PressKon the RKE transmitter.
.Unlock the vehicle using the
Keyless Access system,
if equipped.
.Start the vehicle.
To avoid setting off the alarm by
accident:
.Lock the vehicle after all
occupants have left the vehicle
and all doors are closed.
.Always unlock a door with the
RKE transmitter or use the
Keyless Access system.
Unlocking the driver door with the
key will not disarm the alarm system
or turn off the alarm.
How to Detect a Tamper
Condition
IfKis pressed on the transmitter
and the horn chirps and the lights
flash three times, the alarm was
activated while the system was
armed.
If the alarm has been activated, a
message will appear on the DIC.
See Security Messages on
page 5-43.
Immobilizer
See Radio Frequency Statement on
page 13-12.
Immobilizer Operation
(Key Access)
This vehicle has a passive
theft-deterrent system.
The system does not have to be
manually armed or disarmed.
The vehicle is automatically
immobilized when the key is
removed from the ignition.

Black plate (47,1)Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7707475) - 2015 - CRC - 10/9/14
Seats and Restraints 3-47
If the position you are using
has an adjustable headrest
or head restraint and you
are using a single tether,
route the tether under the
headrest or head restraint
and in between the
headrest or head restraint
posts.
If the position you are using
has an adjustable headrest
or head restraint and you
are using a dual tether,
route the tether around the
headrest or head restraint.
3. Before placing a child in the child restraint, make sure it is
securely held in place. To check,
grasp the child restraint at the
LATCH path and attempt to
move it side to side and back
and forth. There should be no
more than 2.5 cm (1 in) of
movement, for proper
installation.
Head Restraint Removal and
Reinstallation
The rear outboard head restraints
can be removed if they interfere with
the proper installation of the child
restraint. To remove the head restraint:
1. Partially fold the seatback
forward. See Rear Seats on
page 3-11 for additional
information.2. Press both buttons on the head restraint posts at the same time,
and pull up on the head
restraint.
3. Store the head restraint in the trunk of the vehicle.

Black plate (3,1)Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7707475) - 2015 - CRC - 10/9/14
Storage 4-3
Sunglasses Storage
If equipped, sunglasses storage is
on the overhead console. Press the
fixed button on the cover and
release to access.
Center Console Storage
There is storage in the center
console armrest. Press the button to
access. An accessory power outlet,
USB port, SD card reader, and
transmitter pocket are inside. See
Power Outlets on page 5-5and the
infotainment manual.
Press the fixed button to access the
cup holders.
Additional Storage
Features
Convenience Net
Use the convenience net located in
the trunk to store small loads as far
forward as possible. The net should
not be used to store heavy loads.
Attach the net so the opening is
facing up. Attach the net loops to
the hooks on the rear panel of the
trunk.

Black plate (37,1)Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7707475) - 2015 - CRC - 10/9/14
Instruments and Controls 5-37
FRONT RADAR BLOCKED—
SEE OWNER MANUAL
This message can occur under the
following conditions:
.The radar is not clean. Keep the
radar sensors free of mud, dirt,
snow, ice, and slush. Clean the
entire front and/or rear of the
vehicle. For cleaning
instructions, see Exterior Care
on page 10-85.
.Heavy rain or snow is interfering
with the radar object detection or
camera performance.
CRUISE SET TO XXX
This message displays when the
cruise control speed is set. See
Cruise Control on page 9-37.
NO CRUISE BRAKING GAS
PEDAL APPLIED
This message displays when
Adaptive Cruise Control (ACC) is
active and the driver is pressing the gas pedal. When this occurs, ACC
will not brake. See
Adaptive Cruise
Control on page 9-39.
SERVICE ADAPTIVE CRUISE
CONTROL
This message displays when the
Adaptive Cruise Control (ACC)
needs service. Take the vehicle to
your dealer.
SHIFT TO PARK BEFORE
EXITING
This message may display if
Adaptive Cruise Control (ACC) is
engaged holding the vehicle at a
stop, and the driver attempts to exit
the vehicle. Put the vehicle in
P (Park) before exiting.
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.
TRUNK OPEN
This message will display when the
trunk is open. Close the trunk
completely.

Black plate (62,1)Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7707475) - 2015 - CRC - 10/9/14
9-62 Driving and Operating
Do not top off or overfill the tank and
wait a few seconds before removing
the nozzle. Clean fuel from painted
surfaces as soon as possible. See
Exterior Care on page 10-85.
{Warning
If a fire starts while you are
refueling, do not remove the
nozzle. Shut off the flow of fuel by
shutting off the pump or by
notifying the station attendant.
Leave the area immediately.
{Caution
If a new fuel cap is needed, be
sure to get the right type of cap
from your dealer. The wrong type
of fuel cap may not fit properly,
may cause the malfunction
indicator lamp to light, and could
damage the fuel tank and(Continued)
Caution (Continued)
emissions system. See
Malfunction Indicator Lamp on
page 5-16.
Filling a Portable Fuel
Container
{Warning
Filling a portable fuel container
while it is in the vehicle can cause
fuel vapors that can ignite either
by static electricity or other
means. You or others could be
badly burned and the vehicle
could be damaged. Always:
.Use approved fuel
containers.
.Remove the container from
the vehicle, trunk, or pickup
bed before filling.(Continued)
Warning (Continued)
.Place the container on the
ground.
.Place the nozzle inside the fill
opening of the container
before dispensing fuel, and
keep it in contact with the fill
opening until filling is
complete.
.Fill the container no more
than 95% full to allow for
expansion.
.Do not smoke, light matches,
or use lighters while
pumping fuel.
.Avoid using cell phones or
other electronic devices.

Black plate (63,1)Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7707475) - 2015 - CRC - 10/9/14
Driving and Operating 9-63
Trailer Towing
General Towing
Information
Only use towing equipment that has
been designed for the vehicle.
Contact your dealer or trailering
dealer for assistance with preparing
the vehicle for towing a trailer. Read
the entire section before towing a
trailer.
For towing a disabled vehicle, see
Towing the Vehicle on page 10-82.
For towing the vehicle behind
another vehicle such as a motor
home, seeRecreational Vehicle
Towing on page 10-83.
Driving Characteristics
and Towing Tips
Driving with a Trailer
When towing a trailer:
.Become familiar with the state
and local laws that apply to
trailer towing.
.Do not tow a trailer during the
first 800 km (500 mi) to prevent
damage to the engine, axle,
or other parts.
.Then during the first 800 km
(500 mi) of trailer towing, do not
drive over 80 km/h (50 mph) and
do not make starts at full throttle.
.Vehicles can tow in D (Drive).
Shift the transmission to a lower
gear if the transmission shifts
too often under heavy loads and/
or hilly conditions.
.Do not use Adaptive Cruise
Control when towing.
.The Automatic Collision
Preparation System should be
set to Off when towing. See
Active Emergency Braking
System on page 9-53.
.Turn off Park Assist when
towing.
{Warning
When towing a trailer, exhaust
gases may collect at the rear of
the vehicle and enter if the
liftgate, trunk/hatch, or rear-most
window is open.
When towing a trailer:
.Do not drive with the liftgate,
trunk/hatch, or rear-most
window open.
.Fully open the air outlets on
or under the instrument
panel.
.Also adjust the climate
control system to a setting
that brings in only outside air.
See “Climate Control
Systems” in the Index.
For more information about
Carbon Monoxide, see Engine
Exhaust on page 9-26.

Black plate (33,1)Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7707475) - 2015 - CRC - 10/9/14
Vehicle Care 10-33
3. Pull the bulb straight out fromthe socket.
4. Reverse Steps 1–3 to install.
Taillamps, Turn Signal,
Stoplamps, and Back-Up
Lamps
1. Back-Up Lamp
2. Turn Signal Lamp
To replace one of these lamps:
1. Open the trunk. See Trunk on
page 2-13.
2. Remove the fasteners and pull back the trunk trim.
3. Remove the four plastic wing nuts holding the taillamp
assembly in place.
4. Pull out the taillamp assembly and disconnect the wiring
harness.
5. Turn the bulb socket counterclockwise to remove it.
6. Pull the old bulb straight out of the bulb socket.
7. Reverse Steps 1–6 to install.License Plate Lamp
The license plate lamps for this
vehicle are on the trunk lid.
To replace one of these bulbs:
1. Open the trunk. See Trunk on
page 2-13.
2. Push the end on either of the lamp assemblies (passenger
side shown) and then move the
lamp assembly down to remove
it from the trunk lid.

Black plate (34,1)Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7707475) - 2015 - CRC - 10/9/14
10-34 Vehicle Care
3. Turn the bulb socket (1)counterclockwise to remove it
from the lamp assembly (3).
4. Pull the bulb (2) straight out of the bulb socket.
5. Push the replacement bulb straight into the bulb socket and
turn the bulb socket clockwise to
install it into the lamp assembly.
6. Move the lamp assembly into the trunk lid, engaging the clip
side first.
7. Push on the lamp side opposite the clip until the lamp assembly
snaps into place.
Replacement Bulbs
Exterior Lamp Bulb
Number
Back-Up Lamp 921LL (W16W)
Front Turn
Signal Lamp 7444NA
Headlamp High
Beam (Base) HIR2
Headlamp Low
Beam (Base) HIR2
License Plate Lamp W5WLL
Rear Turn Signal 7443NA (WY21W)
For replacement bulbs not listed
here, contact your dealer.
Electrical System
High Voltage Devices and
Wiring
{Warning
Exposure to high voltage can
cause shock, burns, and even
death. The high voltage
components in the vehicle can
only be serviced by technicians
with special training.
High voltage components are
identified by labels. Do not
remove, open, take apart,
or modify these components.
High voltage cable or wiring has
orange covering. Do not probe,
tamper with, cut, or modify high
voltage cable or wiring.

Black plate (41,1)Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7707475) - 2015 - CRC - 10/9/14
Vehicle Care 10-41
FusesUsage
9 Body Control Module 4
10 Body Control Module 8
(J-Case Fuse)
11 Front Heater Ventilation Air
Conditioning/Blower
(J-Case Fuse)
12 Passenger Seat (Circuit Breaker)
13 Driver Seat (Circuit Breaker)
14 Diagnostic Link Connector
15 Airbag/Automatic Occupant Sensing
16 Trunk
17 Heater Ventilation Air Conditioning
Controller Fuses
Usage
18 Pre-Fuse for Fuses 4 and 5
19 Center Stack Displays, Head-Up
Display, Right
Steering Wheel
Control Switch, Rear
Seat Infotainment
Display (eAssist),
HVAC Center Stack
Displays
20 Rear Seat Entertainment
Display/Rear Seat
Audio
21 Instrument Cluster
22 Discrete Logic Ignition Switch
23 Body Control Module 3
24 Body Control Module 2 Fuses
Usage
25 Rear Heater Ventilation Air
Conditioning/Blower
26 AC/DC Inverter
Relays Usage
R1 Trunk Relay
R2 Not Used
R3 Power Outlet Relay

Black plate (72,1)Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7707475) - 2015 - CRC - 10/9/14
10-72 Vehicle Care
6. Screw the connector (2) to thecanister (1).
7. Slide the plastic cover back on.
Storing the Tire Sealant
and Compressor Kit
To access the tire sealant and
compressor kit:
1. Open the trunk. See Trunk on
page 2-13.
2. Lift the cover.
3. Turn the wing nut counterclockwise to remove it. 4. Remove the tire sealant and
compressor kit.
To store the tire sealant and
compressor kit, reverse the steps.
Tire Changing
Removing the Spare Tire and
Tools
The equipment you need is located
in the trunk.
1. Open the trunk.
2. Remove the spare tire cover.
3. Turn the retainer nut counterclockwise and remove
the spare tire.
4. Place the spare tire next to the tire being changed.
1. Screwdriver
2. Tow Hook (If Equipped)
3. Jack
4. Wrench (In Bag)
5. Trim Removal (If Equipped)
6. Fastener (If Equipped)
The jack and tools are stored below
the spare tire.