Buick LaCrosse (2010 – 2016) FEATURED

Buick LaCrosse (2010 – 2016) Fuse Box Location & Diagrams

Buick LaCrosse (2010 – 2016) Fuse Box Location & Diagrams

Second-generation Buick LaCrosses from 2010 to 2016 are examined here. Fuse box schematics for each model year, interior and engine bay fuse panel locations, and fuse and relay operations are covered.

Fuse Box Locations

Passenger Compartment Fuse Box
It is located in the instrument panel, on the driver side, behind the storage compartment.

Buick LaCrosse (2010 – 2016) FIG-1

Engine Compartment Fuse Box

Buick LaCrosse (2010 – 2016) FIG-2

Luggage Compartment Fuse Box
The rear compartment fuse block is located on the left side of the trunk behind a cover.

Buick LaCrosse (2010 – 2016) FIG-3

Passenger Compartment Fuse Box

Buick LaCrosse (2010, 2011 and 2012)

Buick LaCrosse (2010 – 2016) FIG-4

FusesUsage
1Steering Wheel Controls Backlight
2Body Control Module 7
3Body Control Module 5
4Radio
5OnStar® Universal Hands Free Phone
6Power Outlet 1
7Power Outlet 2
8Body Control Module 1
9Body Control Module 4
10Body Control Module 8
 

11

Front Heater Ventilation Air Conditioning/Blower
12Passenger Seat
13Driver Seat
14Diagnostic Link Connector
15Airbag
16Trunk
 

17

Heater Ventilation Air Conditioning Controller
 

18

Radio, OnStar®, Universal Hands Free Phone
19Display
20Automatic Occupant Sensing
21Instrument Panel Cluster
22Discrete Logic Ignition Switch
23Body Control Module 3
24Body Control Module 2
 

25

Rear Heater Ventilation Air Conditioning/Blower
26AC/DC Inverter
RelaysUsage
R1Trunk Relay
R2Not Used
R3Power Outlet Relay
Buick LaCrosse (2013)

Buick LaCrosse (2010 – 2016) FIG-5

FusesUsage
1Steering Wheel Controls Backlight
2Body Control Module 7
3Body Control Module 5
4Radio
5OnStar/Universal Handsfree Phone
6Power Outlet 1
7Power Outlet 2
8Body Control Module 1
9Body Control Module 4
 

10

Body Control Module 8

(J-Case Fuse)

 

11

Front Heater Ventilation Air Conditioning/Blower (J-Case Fuse)
12Passenger Seat (Circuit Breaker)
13Driver Seat (Circuit Breaker)
14Diagnostic Link Connector
15Airbag/Automatic Occupant Sensing
16Trunk
 

17

Heater Ventilation Air Conditioning Controller
18Pre-Fuse for Fuses 4 and 5
 

 

 

19

Infotainment and Center Stack Displays, Head-Up Display, Preferred Device Interface Module, Rear Seat Infotainment (eAssist)
 

20

Rear Seat Entertainment Display/Rear Seat Audio
21Instrument Panel Cluster
22Discrete Logic Ignition Switch
23Body Control Module 3
24Body Control Module 2
 

25

Rear Heater Ventilation Air Conditioning/Blower
26AC/DC Inverter
RelaysUsage
R1Trunk Relay
R2Not Used
R3Power Outlet Relay
Buick LaCrosse (2014, 2015 and 2016)

Buick LaCrosse (2010 – 2016) FIG-6

FusesUsage
1APO 3
2Body Control Module 7
3Steering Wheel Controls Backlight
4Radio/Human Machine Interface/ Rear Auxiliary Audio Jack/Front Auxiliary Audio Video Jack/ TOUCHPAD/Remote Media Player/ BLURAY Remote Media Player
5OnStar/Universal Handsfree Phone
6Power Outlet 1
7Power Outlet 2
8Body Control Module 1
9Body Control Module 4
10Body Control Module 8

(J-Case Fuse)

11Front Heater Ventilation Air Conditioning/Blower (J-Case Fuse)
12Passenger Seat (Circuit Breaker)
13Driver Seat (Circuit Breaker)
14Diagnostic Link Connector
15Airbag/Automatic Occupant Sensing
16Trunk
17Heater Ventilation Air Conditioning Controller
18Pre-Fuse for Fuses 4 and 5
19Center Stack Displays, Head-Up Display, Right Steering Wheel Control Switch, Rear Seat Infotainment Display (eAssist), HVAC Center Stack Displays
20Rear Seat Entertainment Display/Rear Seat Audio
21Instrument Panel Cluster
22Discrete Logic Ignition Switch
23Body Control Module 3
24Body Control Module 2
25Rear Heater Ventilation Air Conditioning/Blower
26AC/DC Inverter
RelaysUsage
R1Trunk Relay
R2Not Used
R3Power Outlet Relay

Engine Compartment Fuse Box

Buick LaCrosse (2010, 2011 and 2012)

Buick LaCrosse (2010 – 2016) FIG-7

Mini FusesUsage
1Transmission Control Module
2Engine Control Module Battery
5Engine Control Module Ignition
8Ignition Coils ‐ Even
9Ignition Coils ‐ Odd
10Engine Control Module
 

11

Post Catalytic Converter Oxygen Sensor Heater
 

13

Trans Ignition/Fuel System Control Module
16MAF
17Airbag Module
18SBZ Ignition
23Variable Effort Steering
29Power Lumbar, Left
32Body Control Module
33Heated Seat
34Antilock Brake System Valves
35Amplifier
36AFL Ignition
37Right High Beam
38Left High Beam
46Cooling Fan Relay
 

47

Pre Catalytic Converter Oxygen Sensor Heater
48Fog Lamps
 

49

Right High Intensity Discharge Headlamp
 

50

Left High Intensity Discharge Headlamp
51Horn
52Cluster Ignition
 

53

Inside Rearview Mirror, Rear Vision Camera,

Vacuum Pump

54Heating, Ventilation and Air Conditioning
 

 

55

Outside Rear View Mirror, Universal Garage Door Opener, Window Switch
56Windshield Washer
60Heated Mirror
62Canister Vent
64AFL Battery
65Theft Deterrent Horn
67Fuel System Control Module
69Regulated Voltage Control Sensor
 

70

2011-2012: Ultrasonic Parking Assist/Side Blind Zone
Mini RelaysUsage
7Engine Control Module
9Cooling Fan
13Cooling Fan
15Run / Crank
17Rear Window Defogger
Micro RelaysUsage
2Starter
4Wiper Speed
5Wiper Control
10Cooling Fan
14Headlamp Low Beam
Buick LaCrosse (2013 to 2016)

Buick LaCrosse (2010 – 2016) FIG-8

NoDescription
Fuses
1Transmission control module–battery
2Engine control module battery
3Air Conditioning Compressor Clutch
5Engine control module/Run/Crank
6Wiper
7Long range radar/ Front camera
8Ignition coils–even (6–cylinder engine)/ Ignition coils–all (4–cylinder engine)
9Ignition coils–odd (6–cylinder engine)
10Engine control module–switched battery
116–cylinder Engine: post catalytic converter/O2 sensor/ Heater/Mass air flow sensor/FlexFuel sensor/Secondary air induction solenoid
12Starter
13Crank for transmission control module/Fuel pump power/Chassis control module (eAssist)
14Cabin heater coolant pump (eAssist)/ secondary air injector/Secondary air injector with pressure sensor
15Motor generator unit coolant pump (eAssist)
16Run/Crank for eAssist power inverter module
17Not Used
18Sunshade module/ Vehicle air purification system/ Ventilated seats
20Heated steering wheel (non eAssist)
21Rear power windows
22Sunroof
23Variable effort steering (if equipped) or eAssist power inverter module
24Front power windows
25Rear heated seats
26Antilock brake system pump
27Electric parking brake
28Rear window defogger
29Heated seat/Left power lumbar
30Heated Seat/Right power pack cooling fan (eAssist)
31AWD/Electronic suspension control
32Body control module 6
33Memory seat–front
34Antilock brake system valves
35Amplifier
36Adaptive forward lighting (AFL) motors–battery
37Right high-beam
38Left high-beam
41Brake vacuum pump
42Cooling fan K2
43Not Used
44Transmission auxiliary oil pump (eAssist)
45Cooling fan K1
46Cooling fan relay
47Six 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
48Fog lamps
49Right High Intensity Discharge Headlamp
51Horn
52Cluster Run/Crank
53Run/Crank for: rearview mirror/Rear vision camera/Air quality sensor/Aero shutter motor
54Run/Crank for: HVAC/Headlamp switch
55Outside rearview mirror/Universal remote system/Front window switches
56Windshield washer
59AIR pump
60Heated mirror
62Canister vent
64Adaptive forward lighting (AFL) module–battery
65Not Used
66AIR solenoid (eAssist)
67Fuel pump power module/Chassis control module
69Regulated voltage control sensor
70Parking assist/Side blind zone
71Passive entry/ Passive start
Relays
1A/C Clutch
2Starter
4Wiper speed
5Wiper control
6Cabin heater coolant pump (eAssist)/ Secondary air injector/Secondary air injector with pressure senso
7Engine control module
9Cooling fan
10Cooling fan
11Transmission auxiliary oil pump (eAssist)
13Cooling fan
14Headlamp low-beam
15Run/Crank
16AIR pump
17Rear window defogger

Luggage Compartment Fuse Box

Buick LaCrosse (2010 and 2011)

Buick LaCrosse (2010 – 2016) FIG-9

J‐Case FusesUsage
1Not Used
2Not Used
3Not Used
4Not Used
9Not Used
10Not Used
11Not Used
13Not Used
14Not Used
34Not Used
35PEPS
36Not Used
37Not Used
Mini FusesUsage
5Not Used
6Heated Steering Wheel
7Not Used
8Not Used
12Not Used
15Not Used
 

16

2010: Side Blind Zone, Ultrasonic Rear Park Assist

2011: Not Used

17Not Used
18PEPS
19Not Used
20Rear Sunshade, Ventilated Seats
21Not Used
22Not Used
23Not Used
24Not Used
25Not Used
26Not Used
27Not Used
28Not Used
29Not Used
30Not Used
31Electronic Suspension Control
32Rear Seat Infotainment
33All‐Wheel Drive
RelaysUsage
K1Not Used
K2Seat Ventilation, Sunshade
K3Heated Steering Wheel
K4Not Used
Buick LaCrosse (2012)

Buick LaCrosse (2010 – 2016) FIG-10

J‐Case FusesUsage
1Not Used
2Not Used
3Not Used
4Not Used
9Not Used
10Not Used
11Not Used
13Not Used
14Not Used
34Not Used
 

35

Passive Entry/ Passive Start Module — Battery 2 (without eAssist)
36Not Used
37Not Used
Mini FusesUsage
5Not Used
 

6

Heated Steering Wheel — Run/Crank (without eAssist)
7Not Used
8Not Used
12Not Used
15Not Used
16Not Used
17Not Used
 

18

Passive Entry/ Passive Start Module — Battery 1 (without eAssist)
19Not Used
 

 

20

Run/Crank for Rear Sunshade (without eAssist), Ventilated Seats (without eAssist)
21Not Used
22Not Used
23Not Used
24Not Used
25Not Used
26Not Used
27Not Used
28Not Used
29Not Used
30Not Used
 

31

Electronic Suspension Control (without eAssist)
 

32

Rear Seat Infotainment (without eAssist)
33All‐Wheel Drive (without eAssist)
RelaysUsage
K1Not Used
 

 

K2

Run/Crank Relay for Seat Ventilation (without eAssist), Sunshade (without eAssist)
 

K3

Run Relay for Heated Steering Wheel (without eAssist)
K4Not Used

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