Fuses and relays Buick Regal (2018-2022)

In this article, we will take a detailed look at the fuse diagrams for the Buick Regal (sixth generation): 2018, 2019, 2020, 2021, 2022 release.

Fuses #43, #44 and #37 in the interior fuse box are responsible for the cigarette lighter and 12V power sockets.

In the engine compartment

Located on the driver's side.

General view of the fuse box.

Diagram
No.	Description
Relays
R4	Empty
R20	Rear window defogger
R25	Front wiper control
R31	Run/Crank
R37	Front wiper speed
R42	Empty
R64	Starter motor
R66	Powertrain
R71	Right LED high beam
R73	AC clutch
R80	Starter pinion
R90	Water change air coolant pump
R94	Empty
R98	Fuel heater
Fuses
1	Empty
2	Empty
3	ABS pump
5	Empty
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	Empty
15	Empty
16	Front wipers
17	Passenger power seat
18	Sun shade
19	Driver power seat
21	Moonroof
22	Rear wiper
23	Auto headlamp leveling
24	Empty
26	Transmission control module (TCM)/Ignition
27	Instrument panel/Ignition
28	Empty
29	Rear vision camera/Ventilation
30	Malfunction indicator lamp/Shift solenoid
32	Canister vent/Video processing module
33	heated seats (front)
34	heated seats (rear)
35	All wheel drive damping control unit
36	Buick Regal Fuel Pump Fuse
38	Empty
39	Empty
40	Steering column lock
41	Empty
43	steering wheel heater
44	Headlamp leveling control unit
45	Empty
46	Engine control module (ECM) / Ignition
47	Empty
48	Cooling fan/DC DC converter 2
49	RDCM
50	Empty
51	Empty
52	Empty
53	Empty
54	Empty
55	Empty
56	Starter
57	Empty
58	Empty
59	Left LED lamps
60	Cooling fan
61	Empty
62	Empty
63	Empty
65	A/C HEV
67	Empty
68	Empty
69	Right LED lamp/Right high-beam headlamps
70	Left high-beam headlamps
72	Starter pinion
74	Empty
75	Engine control module (ECM)
76	Powertrain - off engine
77	Empty
78	Horn
79	Washer pump control unit
81	Transmission control module (TCM) / Engine control module (ECM)
82	Empty
83	Ignition coils
84	Coil
85	60A Shunt
86	Empty
87	SAI fuel heater Unit
88	Aeroshutter Unit
89	Empty
91	Empty
92	TPIM motor generator/TPIM
93	Keyless entry control system
95	Water change air coolant pump
96	Fuel heater
97	Empty
99	Empty

In the passenger compartment

Fuse box located in the instrument panel, on the driver's side.

Access example.

Diagram
Relays
K1	Empty
K2	Accessory power relay
K3	Empty
K4	Empty
K5	Logistics Control Relay
Fuses
F1	Window (Left)
F2	Window (Right)
F3	Empty
F4	HVAC blower
F5	Battery #2
F6	Electric steering column
F7	Empty
F8	Battery #3
F9	Engine control module (ECM) / Battery
F10	BCM #2 On/Off
F11	Empty
F12	Empty
F13	Empty
F14	Empty
F15	Transmission control module (TCM) On/Off
F16	Audio Amp
F17	Empty
F18	Battery #7
F19	Empty
F20	Battery #1
F21	Battery #4
F22	Battery #6
F23	Electric steering column lock
F24	Airbag sensing diagnostic unir/Passenger sensing module
F25	Diagnostic link
F26	Empty
F27	AC/DC inverter
F28	Empty
F29	BCM #8
F30	Overhead console
F31	Steering wheel control unit
F32	Empty
F33	HVAC
F34	Center gateway control unit
F35	Integrated chassis control unit
F36	Charger
F37	Auxiliary 12V power socket Buick Regal Cigarette lighter fuse
F38	OnStar system
F39	Monitor
F40	Object detection system
F41	BCM 1 On/Off
F42	Radio
F43	12V accessory power socket (Rear) / Cigar lighter
F44	12V accessory power socket (Front) / Cigarette lighter fuse