Categories: Buick

Buick LaCrosse (2017-2019..) fuses and relays

 

In this article, we consider the third generation Buick LaCrosse, produced from 2017 to the present. Here you will find fuse box diagrams of Buick LaCrosse 2017, 2018 and 2019, get information about the location of the fuse panels inside the car, and learn about the assignment of each fuse (fuse layout) and relay.

Fuse Layout Buick LaCrosse 2017-2019..

Contents


Cigar lighter / power outlet fuses in the Buick LaCrosse are the fuses №F37 (Auxiliary power outlet/Cigar lighter), №43 (Rear accessory power outlet) and №44 (Front accessory power outlet) in the Passenger compartment fuse box.


Passenger compartment fuse box

Fuse Box Location

It is located in the instrument panel, behind the cover.

Fuse box diagram (2017, 2018)

 

Assignment of the fuses and relays in the Passenger compartment (2017, 2018)

Description
F1 Left window
F2 Right window
F3 Not used
F4 HVAC blower
F5 Battery 2
F6 Electric steering column
F7 Not used
F8 Battery 3
F9 Engine control module/Battery
F10 Body control module 2 On/Off
F11 Not used
F12 Not used
F13 Not used
F14 Not used
F15 Transmission control module On/Off
F16 Amplifier
F17 Not used
F18 Battery 7
F19 Not used
F20 Battery 1
F21 Battery 4
F22 Battery 6
F23 Electric steering column lock
F24 2017: Sensing and diagnostic module

2018: Airbag sensing diagnostic module/ Passenger sensing module

F25 Diagnostic link
F26 Not used
F27 AC DC inverter
F28 Not used
F29 Body control module 8
F30 Overhead console
F31 Steering wheel control
F32 Not used
F33 HVAC
F34 Center gateway module
F35 Integrated chassis control module
F36 Charger
F37 Auxiliary power outlet/Cigar lighter
F38 OnStar
F39 Monitor
F40 Object detection
F41 Body control module 1 On/Off
F42 Radio
F43 2017: Circuit breaker 1

2018: Rear accessory power outlet

F44 2017: Circuit breaker 2

2018: Front accessory power outlet

Relays
K1 Not used
K2 Retained accessory power
K3 Not used
K4 Not used
K5 Logistics

Fuse Box in the engine compartment

Fuse Box Location

Fuse box diagram (2017, 2018)

Assignment of the fuses and relays in the Engine compartment (2017, 2018)

Description
1 Not used
2 Not used
3 ABS pump
5 AC DC inverter
6 Rear closure
7 Left corner lamp
8 Power windows/ Rearview mirror/ Power seats
9 Engine boost
10 2017: Semi-active damping system

2018: Airbag sensing diagnostic module/Passenger sensing module – eAssist

11 DC DC Battery 1
12 Rear window defogger
13 Heated mirrors
14 Not used
15 Passive entry/ Passive start
16 Front wipers
17 Passenger power seat
18 ABS valve
19 Driver power sea
21 Sunroof
22 Right corner lamp
23 Auto headlamp leveling
24 Not used
26 Transmission control module/Ignition
27 Instrument panel/ Ignition
28 Electronic precision shift/Ignition
29 Rear vision camera/ Ventilation
30 Malfunction indicator lamp/Shift solenoid
32 Canister vent solenoid
33 Front heated seats
34 2017: Rear heated seat/ Vehicle body safety module/Energy storage system fan

2018: BSM (eAssist)/Fan control module/Damping control module (SADS)

35 Fog lamps
36 Fuel module
38 Not used
39 Not used
40 Steering columnn lock
41 Not used
43 Heated steering wheel
44 Headlamp leveling/ Rear seat ventilation
45 Not used
46 Engine control module/Ignition
47 Not used
48 Engine boost/Left cooling fan
49 DC DC battery 2/AWD
50 Not used
51 Not used
52 Not used
53 Not used
54 Not used
55 Not used
56 Not used
57 Transmission auxiliary pump
58 TRCM
59 High-beam headlamps
60 Cooling fan
61 Not used
62 Not used
63 Not used
65 A/C HEV
67 Not used
68 Not used
69 Right HID low-beam headlamps
70 Left HID low-beam headlamps
72 Starter pinion
74 Starter motor
75 Engine control module
76 Powertrain – off engine
77 Not used
78 Horn
79 Washer pump
81 Transmission control module/ Engine control module
82 Not used
83 Ignition coils
84 2017: Powertrain – on engine

2018: Coil

85 Engine control module switch 2
86 Engine control module switch 1
87 SAI reaction pump
88 Aeroshutter
89 Headlamp washer
91 Not used
92 TPIM motor generator unit pump
93 Headlamp leveling
95 SAI reaction solenoid
96 Fuel heater
97 Not used
99 Coolant pump
Relays
4 AC DC inverter
20 Rear defogger
25 Front wiper control
31 Run/Crank
37 Front wiper speed
42 Transmission auxiliary pump
64 A/C control
66 Powertrain
71 HID low-beam headlamps
73 Starter motor
80 Starter pinion
90 SAI reaction solenoid
94 Headlamp washer
98 SAI reaction pump


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