2017 BUICK LACROSSE service

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-9803782) -
2017 - crc - 9/7/16
132 Instruments and Controls
OIL PRESSURE LOW—STOP
ENGINE
This message displays if low oil
pressure levels occur. Stop the
vehicle as soon as safely possible
and do not operate it until the cause
of the low oil pressure has been
corrected. Check the oil as soon as
possible and have the vehicle
serviced by your dealer.
Engine Power Messages
ENGINE POWER IS REDUCED
This message displays when the
vehicle's engine power is reduced.
Reduced engine power can affect
the vehicle's ability to accelerate.
If this message is on, but there is no
reduction in performance, proceed
to your destination. The
performance may be reduced the
next time the vehicle is driven. The
vehicle may be driven at a reduced
speed while this message is on, but
maximum acceleration and speed
may be reduced. Anytime this
message stays on, or displays repeatedly, the vehicle should be
taken to your dealer for service as
soon as possible.
Fuel System Messages
FUEL LEVEL LOW
This message displays when the
vehicle is low on fuel. Refuel as
soon as possible.
Key and Lock Messages
NO REMOTE DETECTED
This message displays when the
transmitter battery may be weak.
See
“Starting the Vehicle with a Low
Transmitter Battery” underRemote
Keyless Entry (RKE) System
Operation 027.
NO REMOTE DETECTED
PRESS BRAKE TO RESTART
This message displays when
attempting to turn off the vehicle
and the RKE transmitter is no longer
detected. Restarting is allowed
without the RKE transmitter for five minutes. Press the brake pedal
and ENGINE START/STOP to
restart the vehicle.
NO REMOTE KEY WAS
DETECTED PLACE KEY IN
TRANSMITTER POCKET THEN
START YOUR VEHICLE
This message displays when trying
to start the vehicle if an RKE
transmitter is not detected. The
transmitter battery may be weak.
See
“Starting the Vehicle with a Low
Transmitter Battery” underRemote
Keyless Entry (RKE) System
Operation 027.
REMOTE LEFT IN VEHICLE
This message displays when
leaving the vehicle with the RKE
transmitter still inside.
REPLACE BATTERY IN
REMOTE KEY
This message displays when the
battery in the RKE transmitter needs
to be replaced.

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-9803782) -
2017 - crc - 9/7/16
Instruments and Controls 133
Lamp Messages
AFL (Adaptive Forward
Lighting) LAMPS NEED
SERVICE
This message displays when the
Adaptive Forward Lighting (AFL)
system is disabled and needs
service. See your dealer. See
Adaptive Forward Lighting (AFL)
0150 for more information.
Object Detection System
Messages
FORWARD COLLISION
SYSTEM OFF
This message displays when the
Forward Automatic Braking (FAB)
has been turned off. See Forward
Automatic Braking (FAB) 0209.
FORWARD COLLISION
SYSTEM REDUCED
This message displays when
Forward Automatic Braking (FAB)
has been set to the Alert setting. This setting disables most FAB
functions. See
Forward Automatic
Braking (FAB) 0209.
FORWARD COLLISION
SYSTEM UNAVAILABLE
This message displays when
Forward Automatic Braking (FAB)
has been unavailable for some time.
FAB does not need service. This
message can display under the
following conditions:
.
The front of the vehicle or
windshield is not clean. Keep
these areas clean and free of
mud, dirt, snow, ice, and slush.
For cleaning instructions, see
Exterior Care 0286.
. Heavy rain or snow is interfering
with the object detection
performance.
This message may also be
displayed if there is a problem with
the StabiliTrak system. See Traction
Control/Electronic Stability Control
0 190.
FRONT CAMERA BLOCKED
CLEAN WINDSHIELD
This message displays when the
camera is blocked. Cleaning the
outside of the windshield behind the
rearview mirror may correct the
issue. The Lane Departure Warning
(LDW) system will not operate.
Forward Collision Alert (FCA) may
not work or may not work as well.
LANE CHANGE ALERT OFF
This message indicates that the
driver has turned the Side Blind
Zone Alert (SBZA) and Lane
Change Alert (LCA) systems off.
LANE KEEPING ASSIST
UNAVAILABLE
This message displays when the
Lane Keep Assist (LKA) and Lane
Departure Warning (LDW) system is
temporarily unavailable. The LKA
system does not need service.
This message could be due to the
camera being blocked. Cleaning the
outside of the windshield behind the
rearview mirror may correct the
issue.

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-9803782) -
2017 - crc - 9/7/16
134 Instruments and Controls
PARK ASSIST OFF
This message displays when the
Parking Assist system has been
turned off or when there is a
temporary condition causing the
system to be disabled.
REAR CROSS TRAFFIC
ALERT OFF
This message displays when the
Rear Cross Traffic Alert has been
turned off.
SERVICE FORWARD
COLLISION SYSTEM
If this message displays, take the
vehicle to your dealer to repair the
system. Adaptive Cruise Control
(ACC), Forward Collision Alert
(FCA), and/or Forward Automatic
Braking (FAB) may not work. Do not
use these systems until the vehicle
has been repaired.
SERVICE FRONT CAMERA
If this message remains on after
continued driving, the vehicle needs
service. Do not use the Lane
Departure Warning (LDW) andForward Collision Alert (FCA)
features. Take the vehicle to your
dealer.
SERVICE PARKING ASSIST
This message displays if there is a
problem with the Parking Assist
system. Do not use this system to
help you park. See your dealer for
service.
SERVICE SIDE DETECTION
SYSTEM
If this message remains on after
continued driving, the vehicle needs
service. Side Blind Zone Alert
(SBZA), Lane Change Alert (LCA),
and Rear Cross Traffic Alert (RCTA)
features will not work. Take the
vehicle to your dealer.
SIDE DETECTION SYSTEM
UNAVAILABLE
This message indicates that Side
Blind Zone Alert (SBZA), Lane
Change Alert (LCA), and Rear
Cross Traffic Alert (RCTA) are
disabled either because the sensor
is blocked and cannot detect
vehicles in the blind zone, or thevehicle is passing through an open
area, such as the desert, where
there is insufficient data for
operation. This message may also
activate during heavy rain or due to
road spray. The vehicle does not
need service. For cleaning, see
"Washing the Vehicle" under
Exterior Care
0286.
Ride Control System
Messages
SERVICE ALL WHEEL DRIVE
SYSTEM
This message displays when there
is a problem with the AWD system.
This message could be set by a
number of issues. Some may
require service of the All-Wheel
Drive system; some will not. The
vehicle will run in normal
two-wheel-drive mode when this
message has been set. This could
be caused by:
.
A vehicle or an AWD system
electronics problem.
. Various vehicle electrical issues.

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-9803782) -
2017 - crc - 9/7/16
Instruments and Controls 135
.Worn out or overheated clutch
plates.
. Loss of fluids.
If this message appears, stop when
convenient and turn off the ignition
for 30 seconds. Restart the vehicle
and check for the message on the
DIC display. If the message has
gone off and stays off, it is not
necessary to take the vehicle to
your dealer. If the message still
displays or appears again when you
begin driving, the system needs
service. See your dealer.
SERVICE TRACTION
CONTROL
This message displays when there
is a problem with the Traction
Control System (TCS). When this
message is displayed, the system
will not limit wheel spin. Adjust your
driving accordingly. See your dealer
for service.
SERVICE STABILITRAK
This message displays if there is a
problem with the StabiliTrak system.
If this message appears, try to reset the system. Stop; turn off the engine
for at least 15 seconds; then start
the engine again. If this message
still comes on, it means there is a
problem. See your dealer for
service. The vehicle is safe to drive,
however, you do not have the
benefit of StabiliTrak, so reduce
your speed and drive accordingly.
SPORT MODE ON
This message displays when using
the Selective Ride Control. See
Selective Ride Control
0192.
TRACTION CONTROL OFF
This message displays when the
Traction Control System (TCS) is
turned off. Adjust your driving
accordingly.
Airbag System Messages
SERVICE AIRBAG
This message displays if there is a
problem with the airbag system. See
your dealer for service.
Security Messages
THEFT ATTEMPTED
This message displays if the vehicle
detects a tamper condition.
Service Vehicle Messages
SERVICE POWER STEERING
This message displays and a chime
may sound when there may be a
problem with the power steering
system. If this message displays
and a reduction in steering
performance or loss of power
steering assistance is noticed, see
your dealer.
SERVICE VEHICLE SOON
This message is displayed if there is
a problem with the vehicle. Take the
vehicle to your dealer for service.

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-9803782) -
2017 - crc - 9/7/16
136 Instruments and Controls
Steering System
Messages
STEERING ASSIST IS
REDUCED DRIVE WITH CARE
This message may display if a
problem occurs with the electric
power steering system. If this
message appears, steering effort
may be slightly higher than normal.
The vehicle is still safe to drive. Use
caution while in reduced assist
mode. If this message is persistent
or appears repeatedly, take the
vehicle to your dealer for service.
SeeSteering 0165.
Starting the Vehicle
Messages
PRESS BRAKE TO START
This message is displayed when
attempting to start the vehicle
without first pressing the brake
pedal.
SERVICE KEYLESS START
SYSTEM
This message is displayed if there is
a problem with the pushbutton start
system. Take the vehicle to your
dealer for service.
Tire Messages
SERVICE TIRE MONITOR
SYSTEM
This message displays if there is a
problem with the Tire Pressure
Monitor System (TPMS). See Tire
Pressure Monitor Operation 0264.
TIRE LEARNING ACTIVE
This message displays when the
system is learning new tires. See
Tire Pressure Monitor Operation
0264.
TIRE PRESSURE LOW ADD
AIR TO TIRE
On vehicles with the Tire Pressure
Monitor System (TPMS), this
message displays when the
pressure in one or more of the
vehicle's tires is low. The low tire pressure warning light
will also come on. See
Tire
Pressure Light 0119.
If a tire pressure message displays,
inflate the tires until the tire pressure
is equal to the values shown on the
Tire and Loading Information label.
See Tires 0254, Vehicle Load
Limits 0170, and Tire Pressure
0 261.
More than one tire pressure
message can be received at a time.
The DIC also shows the tire
pressure values. See Driver
Information Center (DIC) 0122.
Transmission Messages
SERVICE TRANSMISSION
There may be a problem with the
transmission. See your dealer.
SERVICE TRANSMISSION
NOW UNABLE TO
SHIFT SOON
The transmission needs service.
Unless the vehicle is serviced, the
transmission will be unable to be

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-9803782) -
2017 - crc - 9/7/16
Instruments and Controls 137
shifted out of P (Park) soon. Have
the vehicle serviced as soon as
possible.
SERVICE SHIFTER SEE
OWNER’S MANUAL
The shift lever needs service. Have
the vehicle serviced as soon as
possible. If the vehicle is
automatically shifting into P (Park),
check to see if the P (Park) button
on top of the shifter is stuck. To
operate the vehicle, hold the shift
lever in the desired gear,
R (Reverse) or D (Drive), until
vehicle speed exceeds 15 km/h
(10 mph), then release the shift
lever.
SHIFT DENIED
This message displays when
attempting to shift to a gear not
appropriate for the vehicle speed
and engine revolutions per
minute (rpm).
SHIFT TO PARK
This message displays when the
transmission needs to be shifted to
P (Park). This may appear when
turning the ignition off if the vehicle
is not in P (Park).
TRANSMISSION HOT—IDLE
ENGINE
This message displays and a chime
sounds if the transmission fluid in
the vehicle gets hot. Driving with the
transmission fluid temperature high
can cause damage to the vehicle.
Stop the vehicle and let it idle to
allow the transmission to cool. This
message clears when the fluid
temperature reaches a safe level.
Vehicle Reminder
Messages
REAR SEAT REMINDER LOOK
IN REAR SEAT
This message displays under
certain conditions indicating there
may be an item or passenger in the
rear seat. Check before exiting the
vehicle.
Vehicle Speed Messages
SPEED LIMIT EXCEEDED
This message is displayed when the
vehicle speed is greater than the
speed warning speed. See "Speed
Warning" under Instrument Cluster
0 108.
SPEED LIMIT SET TO XXX
This message is displayed when the
speed warning is set. See "Speed
Warning" under Instrument Cluster
0 108.
Window Messages
OPEN, THEN CLOSE DRIVER/
PASSENGER WINDOW
This message is displayed when the
window needs to be reprogrammed.
If the vehicle's battery has been
discharged or disconnected, you
may need to program each front
window for the express-up feature to
work. See Power Windows 045.

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-9803782) -
2017 - crc - 9/7/16
156 Climate Controls
Climate Controls
Climate Control Systems
Dual Automatic ClimateControl System . . . . . . . . . . . . . 156
Air Vents
Air Vents . . . . . . . . . . . . . . . . . . . . . 160
Maintenance
Air Intake . . . . . . . . . . . . . . . . . . . . . 161
Passenger Compartment AirFilter . . . . . . . . . . . . . . . . . . . . . . . . 161
Service . . . . . . . . . . . . . . . . . . . . . . . 161
Climate Control Systems
Dual Automatic Climate Control System
The heating, cooling, and ventilation in the vehicle can be controlled with this
system.
Climate Control Buttons
1. Driver and Passenger Temperature Displays
2. Driver and Passenger Temperature Controls
3. Driver and Passenger Heated and Ventilated Seats (If
Equipped)
4. Fan Controls 5. CLIMATE
6. MAX Defrost
7. Recirculation
8. Rear Window Defogger and
Heated Outside Mirrors (If
Equipped)
9. Power (ON/OFF)

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-9803782) -
2017 - crc - 9/7/16
Climate Controls 161
Operation Tips
.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.Maintenance
Air Intake
Clear away any ice, snow, or leaves
from the air intake at the base of the
windshield that can block the flow of
air into the vehicle.
Passenger Compartment
Air Filter
The filter removes dust, pollen, and
other airborne irritants from outside
air that is pulled into the vehicle.
The filter should be replaced as part
of routine scheduled maintenance.
See Maintenance Schedule 0297
for replacement intervals. For more
information, see your dealer.
Service
All vehicles have a label underhood
that identifies the refrigerant used in
the vehicle. The refrigerant system
should only be serviced by trained
and certified technicians. The air
conditioning evaporator should
never be repaired or replaced by
one from a salvage vehicle.
It should only be replaced by a new
evaporator to ensure proper and
safe operation.
During service, all refrigerants
should be reclaimed with proper
equipment. Venting refrigerants
directly to the atmosphere is harmful
to the environment and may also
create unsafe conditions based on
inhalation, combustion, frostbite,
or other health-based concerns.