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Buick LaCrosse (2013 – 2015) – fuse box diagram


Buick LaCrosse (2013 – 2015) – fuse box diagram

Year of production: 2013, 2014, 2015

Engine Compartment Fuse Block

Buick LaCrosse - fuse box - engine compartment
Buick LaCrosse – fuse box – engine compartment
J-CaseUsage
6Wiper
12Starter
21Rear power windows
22Sunroof
24Front power windows
25Rear heated seats
26Antilock brake system pump
27Electric parking brake
28Rear window defogger
41Brake vacuum pump
42Cooling fan K2
43Not Used
44Transmission auxiliary oil pump (eAssist)
45Cooling fan K1
59AIR pump

 

Mini FusesUsage
1Transmission control module–battery
2Engine control module battery
3Air Conditioning Compressor Clutch
5Engine control module/Run/Crank
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
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)
23Variable effort steering (if equipped) or eAssist power inverter module
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
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
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

 

Mini RelaysUsage
7Engine control module
9Cooling fan
13Cooling fan
15Run/Crank
16AIR pump
17Rear window defogger

 

Micro RelaysUsage
1A/C Clutch
2Starter
4Wiper speed
5Wiper control
6Cabin heater coolant pump (eAssist)/ Secondary air injector/Secondary air injector with pressure senso
10Cooling fan
14Headlamp low-beam

Ultra Micro RelaysUsage
11Transmission auxiliary oil pump (eAssist)

Instrument Panel Fuse Block

The instrument panel fuse block is in the instrument panel, on the driver side of the vehicle.

Buick LaCrosse - fuse box - instrument panel
Buick LaCrosse – fuse box – instrument panel
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 hands–free phone
6Power outlet 1
7Power outlet 2
8Body control module 1
9Body control module 4
10Body control module 8
11Front HVAC/Blower
12Passenger seat
13Driver seat
14Diagnostic link connector
15Airbag/Automatic occupant sensing
16Trunk
17HVAC 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 cluster
22Discrete logic ignition switch
23Body control module 3
24Body control module 2
25Rear HVAC/Blower
26AC DC inverter

 

RelaysUsage
R1Trunk relay
R2
R3Power outlet relay

WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.