Buick Regal (2013) – fuse box diagram
Year of production: 2013
Engine Compartment Fuse Block
| Fuses | Usage |
| 1 | Transmission control module |
| 2 | Engine control module |
| 3 | SAI Solenoid (2.4L Engine RPO LEA) |
| 4 | Not Used |
| 5 | Ignition/ Transmission control module/Engine control module |
| 6 | Windshield wiper |
| 7 | BPIM (eAssist only) |
| 8 | Not Used |
| 9 | Fuel injection, Ignition system |
| 10 | Engine control module |
| 11 | Oxygen sensor |
| 12 | Starter |
| 13 | Fuel system control module |
| 14 | Trunk release |
| 15 | MGU coolant pump (eAssist only) |
| 16 | Heated steering wheel |
| 17 | Airbag |
| 18 | BPIM (eAssist only) |
| 19 | Not Used |
| 20 | Not Used |
| 21 | Rear power windows |
| 22 | Antilock Brake System Valve |
| 23 | Variable Effort Steering |
| 24 | Front power windows |
| 25 | Power outlets |
| 26 | Antilock Brake System Pump |
| 27 | Electric parking brake |
| 28 | Rear window defogger |
| 29 | Left-Hand Seat Lumbar |
| 30 | Right-Hand Seat Lumbar |
| 31 | A/C clutch |
| 32 | Body control module 6 |
| 33 | Heated front seats |
| 34 | Sunroof |
| 35 | Infotainment system |
| 36 | Not Used |
| 37 | Right high-beam headlamp |
| 38 | Left high-beam headlamp |
| 39 | Not Used |
| 40 | Not Used |
| 41 | Vacuum pump |
| 42 | Radiator fan |
| 43 | Passive entry/ Passive start |
| 44 | Transmission auxiliary pump (eAssist only) |
| 45 | Radiator fan |
| 46 | Terminal 87/Main relay |
| 47 | Oxygen sensor |
| 48 | Fog lamps |
| 49 | Right-Hand Low Beam, High Intensity Discharge Headlamp |
| 50 | Left-Hand Low Beam, High Intensity Discharge Headlamp |
| 51 | Horn |
| 52 | Motor Indicator Lamp |
| 53 | Inside Rearview Mirror |
| 54 | Not Used |
| 55 | Power windows/ Mirrors |
| 56 | Windshield washer |
| 57 | Not Used |
| 58 | Not Used |
| 59 | Secondary Air Induction (eAssist and 2.4L Engine RPO LEA) |
| 60 | Heated mirrors |
| 61 | Not Used |
| 62 | Canister vent solenoid |
| 63 | Not Used |
| 64 | Heater, Ventilation, and Air Conditioning Pump (eAssist Only) |
| 65 | Not Used |
| 66 | SAI check valve (eAssist only) |
| 67 | Fuel system control module |
| 68 | Not Used |
| 69 | Battery sensor |
| 70 | Not Used |
| 71 | Not Used |
| Relays | Usage |
| 1 | Air Conditioning Control |
| 2 | Starter |
| 3 | Cooling Fan |
| 4 | Front wiper (step 2) |
| 5 | Front Wiper (Step 1, Interval) |
| 6 | SAI Valve/Heater (eAssist and 2.4L Engine RPO LEA), Ventilation, and Air Conditioning Pump (eAssist Only) |
| 7 | Main relay |
| 8 | Not Used |
| 9 | Cooling fan |
| 10 | Cooling fan |
| 11 | Transmission auxiliary pump (eAssist only) |
| 12 | Cooling Fan (2.0L Engine RPO LHU) |
| 13 | Cooling fan |
| 14 | High Intensity Discharge Lamps |
| 15 | Ignition |
| 16 | Secondary AIR Pump (eAssist and 2.4L Engine RPO LEA) |
| 17 | Window/Mirror defogger |
Instrument Panel Fuse Block
The instrument panel fuse block is located in the instrument panel, on the driver side of the vehicle.
| Item | Usage |
| 1 | Suspension control module/Universal garage door opener/ESC |
| 2 | Body control module 1 |
| 3 | Body control module 5 |
| 4 | Radio |
| 5 | Radio displays/ Parking assist/ Infotainment/Module tunnel control |
| 6 | Instrument panel power outlet |
| 7 | Console power outlet |
| 8 | Body control module 3 |
| 9 | Body control module 4 |
| 10 | Body control module 8 |
| 11 | Front Heater Ventilation Air Conditioning/Blower |
| 12 | Right-Hand Power Front Seat |
| 13 | Left-Hand Power Front Seat |
| 14 | Diagnostic Link Connector |
| 15 | Airbag |
| 16 | Spare |
| 17 | Heating Ventilation Air Conditioning Controller |
| 18 | Service fuse/ Logistics relay |
| 19 | Spare |
| 20 | Automatic occupant sensing |
| 21 | Instrument cluster |
| 22 | Discrete Logic Ignition Switch/PEPS |
| 23 | Body control module 6 |
| 24 | Body control module 2 |
| 25 | OnStar |
| 26 | Spare |
WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.