2010 BUICK LACROSSE fog light

Lighting 5-7
has a voltmeter gage or a voltage
display on the Driver Information
Center (DIC), you may see the
voltage move up or down. This is
normal. If there is a problem, an
alert will be displayed.
The battery can be discharged at
idle if the electrical loads are very
high. This is true for all vehicles.
This is because the generator
(alternator) may not be spinning fast
enough at idle to produce all the
power that is needed for very high
electrical loads.
A high electrical load occurs when
several of the following are on, such
as: headlamps, high beams, fog
lamps, rear window defogger,
climate control fan at high speed,
heated seats, engine cooling fans,
trailer loads, and loads plugged into
accessory power outlets.EPM works to prevent excessive
discharge of the battery. It does this
by balancing the generator's output
and the vehicle's electrical needs.
It can increase engine idle speed to
generate more power, whenever
needed. It can temporarily reduce
the power demands of some
accessories.
Normally, these actions occur in
steps or levels, without being
noticeable. In rare cases at the
highest levels of corrective action,
this action may be noticeable to the
driver. If so, a Driver Information
Center (DIC) message might be
displayed, such as BATTERY
SAVER ACTIVE, BATTERY
VOLTAGE LOW, or LOW BATTERY.
If one of these messages display, it
is recommended that the driver
reduce the electrical loads as much
as possible. See
Driver Information
Center (DIC) on page 4‑25.Battery Power Protection
The battery saver feature is
designed to protect the vehicle's
battery.
If the exterior lamps or any interior
light is left on and the ignition is
turned off, the battery rundown
protection system automatically
turns the lamp off after about
10 minutes.

7-2 Climate Controls
Automatic Operation
The system automatically controls
the fan speed, air delivery, air
conditioning and recirculation in
order to heat or cool the vehicle to
the desired temperature.
When the AUTO indicator light is
on, the system is in full automatic
operation. If the air delivery mode,
fan speed, recirculation or air
conditioning setting is adjusted, the
AUTO indicator turns off and the
selected settings will appear on the
display.
To place the system in automatic
mode do the following:
1. Press AUTO.
2. Set the temperature. Allow thesystem time to stabilize. Adjust
the temperature as needed for
best comfort.
Q/R(Temperature Control):
Press to increase or decrease the
temperature. Manual Operation
O(Power):
Press to turn the fan
on or off.
D C(Fan Control): Press to
increase or decrease the fan speed.
The fan speed setting appears on
the main display. Pressing either
button cancels automatic fan control
and the fan can be controlled
manually. Press AUTO to return to
automatic operation.
e *(Air Delivery Mode
Control): Press to change the
direction of the airflow. The current
mode appears in the display screen.
Pressing either button cancels
automatic air delivery control and
the direction of the airflow can be
controlled manually. Press AUTO to
return to automatic operation.
To change the current mode, select
one of the following:
Y(Vent): Air is directed to the
instrument panel outlets.
\(Bi-Level): Air is divided
between the instrument panel
outlets and the floor outlets.
C(Tri-Level): Air is divided
between the windshield, instrument
panel, and floor outlets.
[(Floor): Air is directed to the
floor outlets.
-(Defog): Clears the windows of
fog or moisture. Air is directed to the
windshield and floor outlets.
0(Defrost): Clears the
windshield of fog or frost more
quickly. Air is directed to the
windshield. Selecting defrost will
disable automatic control.
For best results, clear all snow and
ice from windshield before
defrosting.
#(Air Conditioning): Press to
turn the air conditioning system on
or off. If the fan is turned off or the
outside temperature falls below
freezing, the air conditioning system
will not run.

Climate Controls 7-3
Pressing this button cancels
automatic air conditioning and turns
off the air conditioner. Press AUTO
to return to automatic operation and
the air conditioner runs
automatically as needed. When the
indicator light is on, the air
conditioner runs automatically to
cool the air inside the vehicle or to
dry the air needed to defog the
windshield faster.
>(Recirculation):Press to
alternate between recirculating air
inside the vehicle or pulling in
outside air. When the indicator light
is on, air is being recirculated inside
the vehicle. This helps to quickly
cool the air inside the vehicle or
prevent outside air and odors from
entering.
Pressing this button cancels
automatic recirculation. Press AUTO
to return to automatic operation and
recirculation runs automatically as
needed.
Rear Window Defogger
=(Rear Window Defogger):
Press to turn the rear window
defogger on or off.
The rear window defogger turns off
automatically after about
10 minutes. If turned on again it
runs for about 5 minutes before
turning off. The defogger can also
be turned off by turning the ignition
to ACC/ACCESSORY or
LOCK/OFF.
The rear window defogger can be
set to automatic operation, see
Climate and Air Quality under
Vehicle Personalization
on
page 4‑38. 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 40°F
and below. The auto rear defogger
turns off automatically after about
10 minutes, or after 5 minutes if the
outside temperature is not as cold. For vehicles with heated outside
rearview mirrors, they turn on when
the rear window defogger button is
on and helps to clear fog or frost
from the surface of the mirror. See
Heated Mirrors on page 1‑16.
Notice:
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 your
radio's ability to pick up stations
clearly. The repairs wouldn't be
covered by your warranty.
Remote Start Climate Control
Operation: For vehicles with the
remote vehicle start feature, the
climate control system may run
when the vehicle is started remotely.
The system uses the driver's
previous settings to heat or cool the
inside of the vehicle. See Remote
Vehicle Start on page 1‑8.
The rear window defogger turns on
if it is cold outside.

Climate Controls 7-5
Automatic Operation
The system automatically controls
the fan speed, air delivery, air
conditioning and recirculation in
order to heat or cool the vehicle to
the desired temperature.
When the AUTO indicator light is
on, the system is in full automatic
operation. If the air delivery mode,
fan speed, recirculation or air
conditioning setting is adjusted, the
AUTO indicator turns off and the
selected settings will appear on the
display.
To place the system in automatic
mode do the following:
1. Press AUTO.
2. Set the temperature. Allow thesystem time to stabilize. Adjust
the temperature as needed for
best comfort.Q/R(Driver and Passenger
Temperature Control): The
temperature can be adjusted
separately for the driver and the
passenger. Press to increase or
decrease the temperature.
ZONE: Press to link all climate
zone settings to the driver's
settings. The ZONE indicator light
will turn off. When the passenger
settings are adjusted, the ZONE
indicator light is on.
Manual Operation
O(Power): Press to turn the fan
off or on.
D C(Fan Control): Press to
increase or decrease the fan speed.
The fan speed setting appears on
the main display. Pressing either
button cancels automatic fan control
and the fan is controlled manually.
Press AUTO to return to automatic
operation.
e *(Air Delivery Mode
Control): Press to change the
direction of the airflow. The current
mode appears in the display screen.
Pressing either button cancels
automatic air delivery control and
the direction of the airflow is
controlled manually. Press AUTO to
return to automatic operation.
To change the current mode, select
one of the following:
Y(Vent): Air is directed to the
instrument panel outlets.
\(Bi-Level): Air is divided
between the instrument panel
outlets and the floor outlets.
C(Tri-Level): Air is divided
between the windshield, instrument
panel, and floor outlets.
[(Floor): Air is directed to the
floor outlets.
-(Defog): Clears the windows of
fog or moisture. Air is directed to the
windshield and floor outlets.

7-6 Climate Controls
0(Defrost):Clears the
windshield of fog or frost more
quickly. Air is directed to the
windshield.
For best results, clear all snow and
ice from windshield before
defrosting.
#(Air Conditioning): Press to
turn the air conditioning system on
or off. If the fan is turned off or the
outside temperature falls below
freezing, the air conditioner will
not run.
Pressing this button cancels
automatic air conditioning and turns
off the air conditioner. Press AUTO
to return to automatic operation and
the air conditioner runs
automatically as needed. When the
indicator light is on, the air
conditioner runs automatically to
cool the air inside the vehicle or to
dry the air needed to defog the
windshield faster.
>//(Recirculation/Auto
Recirculation): Press to change to
automatic control of air recirculation
inside the vehicle. When the auto
recirculation indicator light is on, the
air is automatically recirculated as
needed to help quickly cool the air
inside the vehicle.
In auto recirculation control, the Air
Quality Control system may operate
when pollution is detected. To adjust
the sensitivity of the Air Quality
Control, see Climate and Air Quality
under Vehicle Personalization
on
page 4‑38.
When the
>indicator light is on, air
is recirculated inside the vehicle.
If both indicator lights are off,
outside air will flow into the vehicle.
Press AUTO or
/to return to
automatic operation. Auto Defog:
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
window fogging, it returns to normal
operation. To turn Auto Defog off or
on, see Climate and Air Quality
under Vehicle Personalization
on
page 4‑38.

Vehicle Care 9-1
Vehicle Care
General Information
General Information . . . . . . . . . . . 9-2
California Proposition65 Warning . . . . . . . . . . . . . . . . . . 9-2
California Perchlorate Materials Requirements . . . . . . . . . . . . . . . 9-3
Accessories and Modifications . . . . . . . . . . . . . . . . 9-3
Vehicle Checks
Doing Your OwnService Work . . . . . . . . . . . . . . . . 9-4
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . 9-5
Engine Compartment Overview . . . . . . . . . . . . . . . . . . . . 9-6
Engine Oil . . . . . . . . . . . . . . . . . . . 9-11
Engine Oil Life System . . . . . . 9-13
Automatic Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . . 9-15
Engine Air Cleaner/Filter . . . . . 9-15
Cooling System . . . . . . . . . . . . . . 9-17
Engine Coolant . . . . . . . . . . . . . . 9-18
Engine Overheating . . . . . . . . . 9-20
Overheated Engine Protection Operating Mode . . . . . . . . . . . . 9-21
Power Steering Fluid . . . . . . . . 9-22 Washer Fluid . . . . . . . . . . . . . . . . 9-23
Brakes . . . . . . . . . . . . . . . . . . . . . . . 9-24
Brake Fluid . . . . . . . . . . . . . . . . . . 9-25
Battery . . . . . . . . . . . . . . . . . . . . . . . 9-26
Starter Switch Check . . . . . . . . 9-27
Automatic Transmission Shift
Lock Control System
Check . . . . . . . . . . . . . . . . . . . . . . 9-27
Ignition Transmission Lock Check . . . . . . . . . . . . . . . . . . . . . . 9-28
Park Brake and P (Park) Mechanism Check . . . . . . . . . 9-28
Wiper Blade Replacement . . . 9-29Headlamp Aiming
Headlamp Aiming . . . . . . . . . . . . 9-30
Bulb Replacement
Bulb Replacement . . . . . . . . . . . 9-33
Halogen Bulbs . . . . . . . . . . . . . . . 9-33
High Intensity Discharge (HID) Lighting . . . . . . . . . . . . . . . . . . . . 9-33
Headlamps, Front Turn Signal and Parking Lamps . . . . . . . . . 9-33
Fog Lamps . . . . . . . . . . . . . . . . . . 9-35 Taillamps, Turn Signal,
Stoplamps, and Back-Up
Lamps . . . . . . . . . . . . . . . . . . . . . . 9-35
License Plate Lamp . . . . . . . . . . 9-36
Replacement Bulbs . . . . . . . . . . 9-37
Electrical System
Electrical System Overload . . . . . . . . . . . . . . . . . . . 9-38
Fuses and Circuit Breakers . . . . . . . . . . . . . . . . . . . 9-38
Engine Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . 9-39
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . . . . . 9-41
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . 9-43
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . . 9-46
Winter Tires . . . . . . . . . . . . . . . . . . 9-46
Tire Sidewall Labeling . . . . . . . 9-47
Tire Designations . . . . . . . . . . . . 9-49
Tire Terminology and
Definitions . . . . . . . . . . . . . . . . . . 9-50
Tire Pressure . . . . . . . . . . . . . . . . 9-53
Tire Pressure Monitor System . . . . . . . . . . . . . . . . . . . . . 9-54

9-86 Vehicle Care
Interior Care
The vehicle's interior will continue to
look its best if it is cleaned often.
Dust and dirt can accumulate on the
upholstery and cause damage to
the carpet, fabric, leather, and
plastic surfaces. Stains should be
removed quickly as extreme heat
could cause them to set rapidly.
Lighter colored interiors may
require more frequent cleaning.
Newspapers and garments that can
transfer color to home furnishings
can also transfer color to the
vehicle's interior.
Remove dust from small buttons
and knobs with a small brush with
soft bristles.
Your dealer/retailer has products for
cleaning the vehicle's interior. When
cleaning the vehicle's interior, only
use cleaners specifically designed
for the surfaces that are being
cleaned. Permanent damage can
result from using cleaners on
surfaces for which they were not
intended. Apply the cleaner directlyto the cleaning cloth to prevent
over-spray. Remove any accidental
over-spray from other surfaces
immediately.
Notice:
Using abrasive cleaners
when cleaning glass surfaces on
the vehicle, could scratch the
glass and/or cause damage to the
rear window defogger. When
cleaning the glass on the vehicle,
use only a soft cloth and glass
cleaner.
Cleaners can contain solvents that
can become concentrated in the
vehicle's interior. Before using
cleaners, read and adhere to all
safety instructions on the label.
While cleaning the vehicle's interior,
maintain adequate ventilation by
opening the vehicle's doors and
windows.
Do not clean the interior using the
following cleaners or techniques:
.Never use a knife or any other
sharp object to remove a soil
from any interior surface.
.Never use a stiff brush. It can
cause damage to the vehicle's
interior surfaces.
.Never apply heavy pressure or
rub aggressively with a cleaning
cloth. Use of heavy pressure can
damage the interior and does
not improve the effectiveness of
soil removal.
.Use only mild, neutral-pH soaps.
Avoid laundry detergents or
dishwashing soaps with
degreasers. Using too much
soap will leave a residue that
leaves streaks and attracts dirt.
For liquid cleaners, about
20 drops per 3.78 L (1 gal.) of
water is a good guide.
.Do not heavily saturate the
upholstery while cleaning.
.Damage to the vehicle's interior
may result from the use of many
organic solvents such as naptha,
alcohol, etc.

i-2 INDEX
B
Battery . . . . . . . . . . . . . . . . . . . . . . . . 9-26Jump Starting . . . . . . . . . . . . . . . . . 9-75
Load Management . . . . . . . . . . . . . 5-6
Power Protection . . . . . . . . . . . . . . 5-7
Voltage and ChargingMessages . . . . . . . . . . . . . . . . . . . 4-33
Blade Replacement, Wiper . . . . 9-29
Bluetooth . . . . 6-42, 6-43, 6-46, 6-57
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . 9-24 Antilock . . . . . . . . . . . . . . . . . . . . . . . 8-31
Assist . . . . . . . . . . . . . . . . . . . . . . . . . 8-34
Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . 9-25
Parking . . . . . . . . . . . . . . . . . . . . . . . 8-32
System Messages . . . . . . . . . . . . 4-33
Braking . . . . . . . . . . . . . . . . . . . . . . . . . 8-4
Break-In, New Vehicle . . . . . . . . . 8-17
Bulb Replacement . . . . . . . . . . . . . 9-37
Fog Lamps . . . . . . . . . . . . . . 5-5, 9-35
Halogen Bulbs . . . . . . . . . . . . . . . . 9-33
Headlamp Aiming . . . . . . . . . . . . . 9-30
Headlamps . . . . . . . . . . . . . . . . . . . 9-33
Headlamps, Front TurnSignal and Parking
Lamps . . . . . . . . . . . . . . . . . . . . . . 9-33 Bulb Replacement (cont.)
High Intensity Discharge
(HID) Lighting . . . . . . . . . . . . . . . 9-33
License Plate Lamps . . . . . . . . . 9-36
Taillamps, Turn Signal,
Stoplamps, and Back-Up
Lamps . . . . . . . . . . . . . . . . . . . . . . 9-35
Buying New Tires . . . . . . . . . . . . . . 9-61
C
Calibration . . . . . . . . . . . . . . . . . . . . . . 4-8
California Fuel Requirements . . . . . . . . . . . 8-51
Perchlorate MaterialsRequirements . . . . . . . . . . . . . . . . 9-3
Warning . . . . . . . . . . . . . . . . . . . . . . . 9-2
Camera, Rear Vision . . . . . . . . . . 8-46
Canadian Vehicle Owners . . . . . . . . iv
Capacities and Specifications . . . . . . . . . . . . . . . . 11-2
Carbon Monoxide Engine Exhaust . . . . . . . . . . . . . . . 8-26
Trunk . . . . . . . . . . . . . . . . . . . . . . . . . 1-11
Winter Driving . . . . . . . . . . . . . . . . . 8-9 Cautions, Danger, and
Warnings . . . . . . . . . . . . . . . . . . . . . . . . iv
CD DVD Player . . . . . . . . . . . . . . . . . . . 6-22
CD Player . . . . . . . . . . . . . . . . . . . . . 6-20
Center Console Storage . . . . . . . . 3-1
Chains, Tire . . . . . . . . . . . . . . . . . . . 9-67
Charging System Light . . . . . . . . 4-17
Check Engine Lamp . . . . . . . . . . . . . . . . . 4-17
Ignition Transmission Lock . . . 9-28
Child Restraints Infants and YoungChildren . . . . . . . . . . . . . . . . . . . . . 2-42
Lower Anchors and Tethers for Children . . . . . . . . . 2-48
Older Children . . . . . . . . . . . . . . . . 2-40
Securing . . . . . . . . . . . . . . . . 2-55, 2-57
Systems . . . . . . . . . . . . . . . . . . . . . . 2-45
Where to Put the Restraint . . . 2-46
Circuit Breakers . . . . . . . . . . . . . . . 9-38
Cleaning
Exterior Care . . . . . . . . . . . . . . . . . 9-82
Interior Care . . . . . . . . . . . . . . . . . . 9-86