The sixth-generation Buick Regal has been in production since 2018. In this guide, you’ll find detailed fuse box diagrams for the 2018, 2019, and 2020 models. We’ll provide you with the exact locations of the fuse panels inside the vehicle and explain the specific functions of each fuse and relay. This information is essential for troubleshooting electrical issues and understanding the vehicle’s electrical system layout.
Table of Contents
Cigar lighter / power outlet fuses in the Buick Regal are the fuse No.F37 (Auxiliary power outlet/Cigar lighter), No.43 (Rear accessory power outlet) and No.44 (Front accessory power outlet) in the Passenger compartment fuse box.
Engine compartment
| Fuse Number | Description |
|---|---|
| 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 |
| 49 | RDCM |
| 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 |
| Relays | |
| 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 |
Passenger compartment
| Fuse Number | 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 | 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 | Rear accessory power outlet |
| F44 | Front accessory power outlet |
| Relays | |
| K1 | Not used |
| K2 | Retained accessory power |
| K3 | Not used |
| K4 | Not used |
| K5 | Logistics |
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Tom Smith is a passionate car mechanic and automotive enthusiast, specializing in the intricate world of car fuse boxes. With years of hands-on experience under the hood, he has earned a reputation as a reliable expert in his field. As the founder and content creator of the popular blog website 'carsfuse.com,' Tom has dedicated himself to sharing his extensive knowledge of car fuse boxes and electrical systems with the world.