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In this article, you will find information about the fuses of the Buick Regal (models 2018, 2019, and 2020), including diagrams of the fuse boxes, a list of fuses and relays, their designation, and the location of the fuse blocks within the vehicle.
Checking and Replacing Fuses in Buick Regal
The wiring circuits in the vehicle are protected from short circuits by a combination of fuses and circuit breakers. This greatly reduces the chance of damage caused by electrical problems.
To check a fuse, look at the silver-colored band inside the fuse. If the band is broken or melted, replace the fuse. Be sure to replace a bad fuse with a new one of the identical size and rating. Fuses of the same amperage can be temporarily borrowed from another fuse location, if a fuse goes out. Replace the fuse as soon as possible.
Caution!
- Fuses and circuit breakers are marked with their ampere rating. Do not exceed the specified amperage rating when replacing fuses and circuit breakers. Use of an oversized fuse or circuit breaker can result in a vehicle fire.
- Before replacing a fuse, turn every vehicle electrical switch off.
- Spilling liquid on any electrical component on the vehicle may damage it. Always keep the covers on any electrical component.
Location of Fuse Boxes
Engine Compartment Fuse Block:
To remove the fuse block cover, squeeze the three retaining clips on the cover and lift it straight up.
Instrument Panel Fuse Block:
The instrument panel fuse block is in the instrument panel, on the driver side of the vehicle. To access the fuses, press in on the sides of the cover and pull to release it from the instrument panel. Pull the panel toward you to release it from the hinges.
Fuse Box Diagrams
2018-2020
Engine Compartment Fuse Block
| № | Usage |
|---|---|
| 1 | - |
| 2 | - |
| 3 | ABS pump |
| 5 | - |
| 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 | - |
| 15 | - |
| 16 | Front wipers |
| 17 | Passenger power seat |
| 18 | Sunshade |
| 19 | Driver power seat |
| 21 | Sunroof |
| 22 | Rear wiper |
| 23 | Auto headlamp leveling |
| 24 | - |
| 26 | Transmission control module / lgnition |
| 27 | Instrument panel / Ignition |
| 28 | - |
| 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 | - |
| 39 | - |
| 40 | Steering column lock |
| 41 | - |
| 43 | Heated steering wheel |
| 44 | Headlamp leveling |
| 45 | - |
| 46 | Engine control module / lgnition |
| 47 | - |
| 48 | Cooling fan / DC DC converter 2 |
| 49 | RDCM |
| 50 | - |
| 51 | - |
| 52 | - |
| 53 | - |
| 54 | - |
| 55 | - |
| 56 | Starter |
| 57 | - |
| 58 | - |
| 59 | Left LED lamps |
| 60 | Cooling fan |
| 61 | - |
| 62 | - |
| 63 | - |
| 65 | A/C HEV |
| 67 | - |
| 68 | - |
| 69 | Right LED lamp / Right high-beam headlamps |
| 70 | Left high-beam headlamps |
| 72 | Starter pinion |
| 74 | - |
| 75 | Engine control module |
| 76 | Powertrain - off engine |
| 77 | - |
| 78 | Horn |
| 79 | Washer pump |
| 81 | Transmission control module / Engine control module |
| 82 | - |
| 83 | Ignition coils |
| 84 | Coil |
| 85 | Shunt 60A |
| 86 | - |
| 87 | SAI fuel heater |
| 88 | Aeroshutter |
| 89 | - |
| 91 | - |
| 92 | TPIM motor generator / TPIM |
| 93 | Keyless entry control module |
| 95 | Water change air coolant pump |
| 96 | Fuel heater |
| 97 | - |
| 99 | - |
| 4 | - |
| 20 | Rear window defogger |
| 25 | Front wiper control |
| 31 | Run/Crank |
| 37 | Front wiper speed |
| 42 | - |
| 64 | Starter motor |
| 66 | Powertrain |
| 71 | Right LED high beam |
| 73 | AC clutch |
| 80 | Starter pinion |
| 90 | Water change air coolant pump |
| 94 | - |
| 98 | Fuel heater |
Instrument Panel Fuse Block
| № | Usage |
|---|---|
| F1 | Left window |
| F2 | Right window |
| F3 | - |
| F4 | HVAC blower |
| F5 | Battery 2 |
| F6 | Electric steering column |
| F7 | - |
| F8 | Battery 3 |
| F9 | Engine control module / Battery |
| F10 | Body control module 2 On/Off |
| F11 | - |
| F12 | - |
| F13 | - |
| F14 | - |
| F15 | Transmission control module On/Off |
| F16 | Amplifier |
| F17 | - |
| F18 | Battery 7 |
| F19 | - |
| 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 | - |
| F27 | AC DC inverter |
| F28 | - |
| F29 | Body control module 8 |
| F30 | Overhead console |
| F31 | Steering wheel control |
| F32 | - |
| 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 |
| K1 | - |
| K2 | Retained accessory power |
| K3 | - |
| K4 | - |
| K5 | Logistics |