Buick LaCrosse - 2012 Fuse Box Diagram

Buick LaCrosse - 2012 Fuse Box Diagram

Instruments and Controls
5-7
Open the protective cover to use
the accessory power outlet.
Certain electrical accessories
may not be compatible with the
accessory power outlet and
could overload vehicle or adapter
fuses. If there is a problem, see
your dealer.
When adding electrical equipment,
be sure to follow the installation
instructions included with the
equipment. See
Add-On Electrical
Equipment on page 9
60
.
Notice:
Hanging heavy
equipment from the power outlet
can cause damage not covered
by the vehicle warranty. The
power outlets are designed for
accessory power plugs only, such
as cell phone charge cords.
Power Outlet 110 Volt Alternating
Current
The vehicle may have a power
outlet that can be used to plug in
electrical equipment with a
maximum limit of 150 watts.
The power outlet is located on the
rear of the center console.
An indicator light on the outlet
comes on when in use. The light
comes on when the ignition is in
ON/RUN, equipment requiring less
than 150 watts is plugged into the
outlet, and no system fault is
detected.
The indicator light on the outlet will
not turn on if the plug is not fully
seated.
If you try to connect equipment
using more than 150 watts or a
system fault is detected, the
equipment may operate for a
short period and turn itself off.
A protection circuit shuts off the
power supply and the indicator light
turns off. To reset the circuit, unplug
the item and plug it back in or turn
the Remote Accessory Power (RAP)
off and then back on. See
Retained
Accessory Power (RAP) on
page 9
25
. Prolonged usage of the
power outlet at the maximum load of
150 watts may cause the outlet to
overheat and automatically shut
down. The power restarts when
equipment that operates within the
limit is plugged into the outlet and a
system fault is not detected.
Instruments and Controls
5-33
If You Cannot See the HUD
Image When the Ignition Is On
.
Is anything covering the
HUD lens?
.
Is the HUD dimmer setting bright
enough?
.
Is the HUD image adjusted to
the proper height?
.
Are you wearing polarized
sunglasses?
.
Still no HUD image? Check the
fuse in the instrument panel fuse
block. See
Instrument Panel
Fuse Block on page 10
40
.
If the HUD Image Is Not Clear
.
Is the HUD image too bright?
.
Are the windshield and HUD
lens clean?
If the HUD image is not correct,
contact your dealer.
Keep in mind that the windshield is
part of the HUD system.
Vehicle Messages
Messages displayed on the
DIC indicate the status of the
vehicle or some action that may be
needed to correct a condition.
Multiple messages may display
one after the other.
The messages that do not require
immediate action can be
acknowledged and cleared by
pressing SET/CLR. The messages
that require immediate action cannot
be cleared until that action is
performed. All messages should be
taken seriously and clearing the
messages does not correct the
problem.
Battery Voltage and
Charging Messages
BATTERY SAVER ACTIVE
This message displays when the
vehicle has detected that the battery
voltage is dropping beyond a
reasonable point. The battery saver
system starts reducing certain
features of the vehicle that you may
be able to notice. At the point that
features are disabled, this message
is displayed. It means that the
vehicle is trying to save the charge
in the battery. Turn off unnecessary
accessories to allow the battery to
recharge.
LOW BATTERY
This message is displayed when the
battery voltage is low. See
Battery
on page 10
25
for more information.
SERVICE BATTERY
CHARGING SYSTEM
This message is displayed when
there is a fault in the battery
charging system. Take the vehicle to
your dealer for service.
Brake System Messages
BRAKE FLUID LOW
This message is displayed when the
brake fluid level is low. See
Brake
Fluid on page 10
23
.
Lighting
6-5
The turn and lane
change signal
can be turned off manually by
moving the lever back to its
original position.
If after signaling a turn or lane
change the arrow flashes rapidly or
does not come on, a signal bulb
might be burned out.
Have the bulbs replaced. If the bulb
is not burned out, check the fuse.
See
Fuses and Circuit Breakers on
page 10
36
.
Fog Lamps
For vehicles with fog lamps,
the button is located on the
exterior lamp control, left of the
steering wheel.
To turn on the fog lamps, the ignition
and the headlamps or parking lamps
must be on.
If the fog lamps are turned on while
the exterior lamp switch is in the
AUTO position, the headlamps
come on automatically.
#
:
Press to turn on or off. An
indicator light on the instrument
panel cluster comes on when the
fog lamps are on.
Some localities have laws that
require the headlamps to be on
along with the fog lamps.
9-24
Driving and Operating
Engine Heater
The engine coolant heater,
if available, can help in cold weather
conditions at or below
18°C (0°F)
for easier starting and better fuel
economy during engine warm-up.
Plug in the coolant heater at least
four hours before starting the
vehicle. An internal thermostat in
the plug end of the cord will prevent
engine coolant heater operation at
temperatures above
18°C (0°F).
To Use the Engine Coolant
Heater
1.
Turn off the engine.
2.
Open the hood and unwrap the
electrical cord.
3.6L V6 Engine
The electrical cord is located on
the driver side of the engine
compartment, between the
fender and the engine
compartment fuse block on
vehicles with a six cylinder
engine.
2.4L L4 Engine
The electrical cord is located on
the passenger side of the engine
compartment, between the
fender and the air cleaner on
vehicles with a four cylinder
engine.
3.
Plug it into a normal, grounded
110-volt AC outlet.
Vehicle Care
10-7
A.
Engine Air Cleaner/Filter on
page 10
13
.
B.
Engine Cover.
C.
Engine Cooling Fans (Out of
View). See
Cooling System on
page 10
15
.
D.
Engine Oil Fill Cap. See
Engine
Oil on page 10
9
.
E.
Engine Oil Dipstick (Out of
View). See
Engine Oil on
page 10
9
.
F.
High Voltage Cable
(Orange Color).
G.
Transmission Fluid Cap.
See
Automatic Transmission
Fluid on page 10
13
.
H.
Brake Master Cylinder
Reservoir. See
Brakes on
page 10
22
.
I.
Battery (Under Cover).
See
Battery on page 10
25
.
J.
Coolant Surge Tank and
Pressure Cap. See
Engine
Coolant on page 10
16
.
K.
Engine Compartment Fuse
Block on page 10
36
.
L.
Windshield Washer Fluid
Reservoir. See
Washer Fluid on
page 10
22
.
Vehicle Care
10-9
A.
Engine Air Cleaner/Filter on
page 10
13
.
B.
Power Steering Reservoir and
Cap. See
Power Steering Fluid
(2.4L L4 Engine) on page 10
21
or
Power Steering Fluid (3.6L
V6 Engine) on page 10
21
.
C.
Engine Oil Fill Cap. See
Engine
Oil on page 10
9
.
D.
Engine Oil Dipstick. See
Engine
Oil on page 10
9
.
E.
Engine Cover.
F.
Transmission Fluid Cap and
Dipstick. See
Automatic
Transmission Fluid on
page 10
13
.
G.
Brake Master Cylinder
Reservoir. See
Brakes on
page 10
22
.
H.
Coolant Surge Tank and
Pressure Cap. See
Engine
Coolant on page 10
16
.
I.
Battery Cover. See
Battery on
page 10
25
.
J.
Engine Compartment Fuse
Block on page 10
36
.
K.
Windshield Washer Fluid
Reservoir. See
Washer Fluid on
page 10
22
.
Engine Oil
To ensure proper engine
performance and long life, careful
attention must be paid to engine oil.
Following these simple, but
important steps will help protect
your investment:
.
Always use engine oil approved
to the proper specification and of
the proper viscosity grade. See
Selecting the Right Engine Oil
in this section.
.
Check the engine oil level
regularly and maintain the
proper oil level. See
Checking
Engine Oil
and
When to Add
Engine Oil
in this section.
.
Change the engine oil at the
appropriate time. See
Engine Oil
Life System on page 10
12
.
.
Always dispose of engine oil
properly. See
What to Do with
Used Oil
in this section.
Vehicle Care
10-35
Replacement Bulbs
Exterior Lamp
Bulb
Number
Back-Up Lamp
921LL
Daytime Running
Lamp (Uplevel)
3157K LCP
Front Turn Signal/
Parking Lamp
3757NAK
LCP
Headlamp High
Beam (Base)
H9
Headlamp Low
Beam (Base)
H11LL
License Plate Lamp
W5WLL
Rear Turn Signal
3757NAK
LCP
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.
Electrical System
Overload
The vehicle has fuses and circuit
breakers to protect against an
electrical system overload.
When the current electrical load is
too heavy, the circuit breaker opens
and closes, protecting the circuit
until the current load returns to
normal or the problem is fixed. This
greatly reduces the chance of circuit
overload and fire caused by
electrical problems.
Fuses and circuit breakers protect
power devices in the vehicle.
Replace a bad fuse with a new one
of the identical size and rating.
If there is a problem on the road and
a fuse needs to be replaced, the
same amperage fuse can be
borrowed. Choose some feature of
the vehicle that is not needed to use
and replace it as soon as possible.
10-36
Vehicle Care
Headlamp Wiring
An electrical overload may cause
the lamps to go on and off, or in
some cases to remain off. Have the
headlamp wiring checked right away
if the lamps go on and off or
remain off.
Windshield Wipers
If the wiper motor overheats due to
heavy snow or ice, the windshield
wipers will stop until the motor cools
and will then restart.
Although the circuit is protected
from electrical overload, overload
due to heavy snow or ice may
cause wiper linkage damage.
Always clear ice and heavy snow
from the windshield before using the
windshield wipers.
If the overload is caused by an
electrical problem and not snow or
ice, be sure to get it fixed.
Fuses and Circuit
Breakers
The wiring circuits in the vehicle are
protected from short circuits by a
combination of fuses and circuit
breakers. This greatly reduces the
chance of damage caused by
electrical problems.
To check a fuse, look at the
silver-colored band inside the fuse.
If the band is broken or melted,
replace the fuse. Be sure to replace
a bad fuse with a new one of the
identical size and rating.
Fuses of the same amperage can
be temporarily borrowed from
another fuse location, if a fuse goes
out. Replace the fuse as soon as
possible.
To identify and check fuses, circuit
breakers, and relays, see
Engine
Compartment Fuse Block on
page 10
36
,
Instrument Panel Fuse
Block on page 10
40
, and
Rear
Compartment Fuse Block on
page 10
42
.
Engine Compartment
Fuse Block
To remove the fuse block cover,
squeeze the three retaining clips on
the cover and lift it straight up.
Notice:
Spilling liquid on any
electrical component on the
vehicle may damage it. Always
keep the covers on any electrical
component.
Vehicle Care
10-37
Engine Compartment Fuse Block
The vehicle may not be equipped
with all of the fuses, relays, and
features shown.
J-Case
Fuses
Usage
6
Wiper
12
Starter
J-Case
Fuses
Usage
21
Rear Power
Windows
22
Sunroof
24
Front Power
Windows
25
Passive Entry/
Passive Start
Module
Battery 2
(eAssist)
26
Antilock Brake
System Pump
27
Electric Park Brake
28
Rear Window
Defogger
41
Brake
Vacuum Pump
42
Cooling Fan K2
43
Not Used
10-38
Vehicle Care
J-Case
Fuses
Usage
44
Transmission
Auxiliary Oil Pump
(eAssist)
45
Cooling Fan K1
59
AIR Pump
Mini Fuses
Usage
1
Transmission
Control Module
Battery
2
Engine Control
Module Battery
3
Air Conditioning
Compressor Clutch
5
Engine Control
Module Run/Crank
8
Ignition Coils
Even (Six Cylinder
Engine), Ignition
Coils
All (Four
Cylinder Engine
Mini Fuses
Usage
9
Ignition Coils
Odd
(Six Cylinder
Engine)
10
Engine Control
Module
Switched
Battery (from Engine
Control Module
Relay)
11
Six Cylinder Engine:
Post Catalytic
Converter Oxygen
Sensor Heater,
Mass Air Flow
Sensor, Flex Fuel
Sensor
13
Run/Crank for
Transmission
Control Module and
Fuel System Control
Module
14
Cabin Heater
Coolant Pump
(eAssist)
Mini Fuses
Usage
14
Motor Generator
Unit Coolant Pump
(eAssist)
16
Run/Crank for
eAssist Power
Inverter Module
17
Airbag Module
Run/Crank
18
Vented Seats
(eAssist)
23
Variable Effort
Steering (if
equipped) or eAssist
Power Inverter
Module
29
Power Lumbar, Left
30
Power Lumbar,
Right or Power Pack
Cooling Fan
(eAssist)
Vehicle Care
10-39
Mini Fuses
Usage
31
Passive Entry/
Passive Start
Module
Battery 1
(eAssist)
32
Body Control
Module 6
33
Heated Seat
Front
34
Antilock Brake
System Valves
35
Amplifier
36
Adaptive Forward
Lighting (AFL)
Motors
Battery
37
Right High Beam
38
Left High Beam
46
Cooling Fan Relay
Mini Fuses
Usage
47
Six Cylinder Engine:
Pre Catalytic
Converter Oxygen
Sensor Heater,
Canister Purge
Solenoid. Four
Cylinder Engine: Pre
and Post Catalytic
Converter Oxygen
Sensor Heaters,
Canister Purge
Solenoid, Mass Air
Flow Sensor.
48
Fog Lamps
49
Right High Intensity
Discharge
Headlamp
50
Left High Intensity
Discharge
Headlamp
51
Horn
52
Cluster Run/Crank
Mini Fuses
Usage
53
Run/Crank for Inside
Rearview Mirror,
Rear Vision Camera
54
Run/Crank for:
Heating, Ventilation
and Air Conditioning
55
Outside Rearview
Mirror, Universal
Garage Door
Opener, Front
Window Switches
56
Windshield Washer
60
Heated Mirror
62
Canister Vent
64
Adaptive Forward
Lighting (AFL)
Module
Battery
65
Not Used
66
AIR Solenoid
(eAssist)
67
Fuel System Control
Module
10-40
Vehicle Care
Mini Fuses
Usage
69
Regulated Voltage
Control Sensor
70
Ultrasonic Parking
Assist/Side
Blind Zone
Mini Relays
Usage
7
Engine Control
Module
9
Cooling Fan
13
Cooling Fan
15
Run/Crank
16
AIR Pump
17
Rear Window
Defogger
Micro
Relays
Usage
1
Air Conditioning
Compressor Clutch
2
Starter
4
Wiper Speed
5
Wiper Control
6
Cabin Heater
Coolant Pump
(eAssist)
10
Cooling Fan
14
Headlamp
Low Beam
Ultra Micro
Relays
Usage
11
Transmission
Auxiliary Oil Pump
(eAssist)
Instrument Panel Fuse
Block
The instrument panel fuse block is
located in the instrument panel, on
the driver side of the vehicle. To
access the fuses, open the fuse
panel door by pulling down at
the top.
Press in on the sides of the door to
release it from the instrument panel.
Vehicle Care
10-41
Pull the door toward you to release
it from the hinge.
Instrument Panel Fuse Block
The vehicle may not be equipped
with all of the fuses, relays, and
features shown.
Fuses
Usage
1
Steering Wheel
Controls Backlight
2
Body Control
Module 7
3
Body Control
Module 5
4
Radio
5
OnStar
6
Power Outlet 1
7
Power Outlet 2
8
Body Control
Module 1
9
Body Control
Module 4
10
Body Control
Module 8
(J
Case Fuse)
11
Front Heater
Ventilation Air
Conditioning/Blower
(J
Case Fuse)
10-42
Vehicle Care
Fuses
Usage
12
Passenger Seat
(Circuit Breaker)
13
Driver Seat (Circuit
Breaker)
14
Diagnostic Link
Connector
15
Airbag
16
Trunk
17
Heater Ventilation
Air Conditioning
Controller
18
Pre
Fuse for Fuses
4 and 5
19
Infotainment and
Center Stack
Displays, Head
Up
Display, Preferred
Device Interface
Module, Rear Seat
Infotainment
(eAssist)
20
Automatic Occupant
Sensing
Fuses
Usage
21
Instrument Panel
Cluster
22
Discrete Logic
Ignition Switch
23
Body Control
Module 3
24
Body Control
Module 2
25
Rear Heater
Ventilation Air
Conditioning/Blower
26
AC/DC Inverter
Relays
Usage
R1
Trunk Relay
R2
Not Used
R3
Power Outlet Relay
Rear Compartment Fuse
Block
The rear compartment fuse block is
located on the left side of the trunk
behind a cover. Vehicles with
eAssist do not have a rear
compartment fuse block.
Vehicle Care
10-43
The vehicle may not be equipped
with all of the fuses, relays, and
features shown.
Mini Fuses
Usage
5
Not Used
6
Heated Steering
Wheel
Run/Crank
(without eAssist)
Mini Fuses
Usage
7
Not Used
8
Not Used
12
Not Used
15
Not Used
16
Not Used
Mini Fuses
Usage
17
Not Used
18
Passive Entry/
Passive Start
Module
Battery 1
(without eAssist)
19
Not Used
20
Run/Crank for Rear
Sunshade (without
eAssist), Ventilated
Seats (without
eAssist)
21
Not Used
22
Not Used
23
Not Used
24
Not Used
25
Not Used
26
Not Used
27
Not Used
28
Not Used
29
Not Used
10-44
Vehicle Care
Mini Fuses
Usage
30
Not Used
31
Electronic
Suspension Control
(without eAssist)
32
Rear Seat
Infotainment (without
eAssist)
33
All
Wheel Drive
(without eAssist)
J
Case
Fuses
Usage
1
Not Used
2
Not Used
3
Not Used
4
Not Used
9
Not Used
10
Not Used
11
Not Used
13
Not Used
J
Case
Fuses
Usage
14
Not Used
34
Not Used
35
Passive Entry/
Passive Start
Module
Battery 2
(without eAssist)
36
Not Used
37
Not Used
Relays
Usage
K1
Not Used
K2
Run/Crank Relay for
Seat Ventilation
(without eAssist),
Sunshade (without
eAssist)
K3
Run Relay for
Heated Steering
Wheel (without
eAssist)
K4
Not Used
Wheels and Tires
Tires
Every new GM vehicle has
high-quality tires made by a
leading tire manufacturer.
See the warranty manual for
information regarding the tire
warranty and where to get
service. For additional
information refer to the tire
manufacturer.
{
WARNING
.
Poorly maintained and
improperly used tires are
dangerous.
.
Overloading the tires can
cause overheating as a result
of too much flexing. There
could be a blowout and a
serious crash. See
Vehicle
Load Limits on page 9
10
.
(Continued)