Buick Regal (2018-2020…) fuses and relays


In this article, we consider the sixth generation Buick Regal, available from 2018 to the present. Here you will find fuse box diagrams of Buick Regal 2018, 2019 and 2020, 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 Regal 2018-2020…


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

Fuse box location

Passenger compartment fuse box

It is located in the left side of the dashboard, behind the cover.The location of the fuses in the passenger compartment: Buick Regal (2018, 2019-...)

Engine compartment

The location of the fuses in the engine compartment: Buick Regal (2018, 2019-...)

Fuse box diagrams

2018, 2019, 2020

Passenger compartment

Instrument panel fuse box diagram: Buick Regal (2018, 2019-...)

Assignment of the fuses and relays in the Passenger compartment

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 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
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 Rear accessory power outlet
F44 Front accessory power outlet
K1 Not used
K2 Retained accessory power
K3 Not used
K4 Not used
K5 Logistics
Engine compartment

Under-hood fuse box diagram: Buick Regal (2018, 2019-...)

Assignment of the fuses and relays in the engine compartment

1 Not used
2 Not used
3 ABS pump
5 Not used
6 Rear closure
7 Fog lamp
8 Memory control module
9 Heated windshield
10 Seat lumbar
11 DC DC converter 1
12 Rear window defogger
13 Heated mirrors
14 Not used
15 Not used
16 Front wipers
17 Passenger power seat
18 Sun shade
19 Driver power seat
21 Sunroof
22 Rear wiper
23 Auto headlamp leveling
24 Not used
26 Transmission control module/Ignition
27 Instrument panel/Ignition
28 Not used
29 Rear vision camera/Ventilation
30 Malfunction indicator lamp/Shift solenoid
32 Canister vent/Video processing module
33 Front heated seats
34 Rear heated seats
35 All wheel drive damping control
36 Fuel module
38 Not used
39 Not used
40 Steering column lock
41 Not used
43 Heated steering wheel
44 Headlamp leveling
45 Not used
46 Engine control module/Ignition
47 Not used
48 Cooling fan/DC DC converter 2
50 Not used
51 Not used
52 Not used
53 Not used
54 Not used
55 Not used
56 Starter
57 Not used
58 Not used
59 Left LED lamps
60 Cooling fan
61 Not used
62 Not used
63 Not used
65 A/C HEV
67 Not used
68 Not used
69 Right LED lamp/Right high-beam headlamps
70 Left high-beam headlamps
72 Starter pinion
74 Not used
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 Coil
85 Shunt 60A
86 Not used
87 SAI fuel heater
88 Aeroshutter
89 Not used
91 Not used
92 TPIM motor generator/TPIM
93 Keyless entry control module
95 Water change air coolant pump
96 Fuel heater
97 Not used
99 Not used
4 Not used
20 Rear window defogger
25 Front wiper control
31 Run/Crank
37 Front wiper speed
42 Not used
64 Starter motor
66 Powertrain
71 Right LED high beam
73 AC clutch
80 Starter pinion
90 Water change air coolant pump
94 Not used
98 Fuel heater

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