Buick LaCrosse 2018 Fuse Box Info
Passenger compartment fuse box location:
The instrument panel fuse box is located in the instrument panel, on the driver side of the vehicle.
Engine compartment fuse box location:
Fuse Box Diagram | Layout
Passenger compartment fuse box:
| Fuse/Relay N° | Functions |
| Fuses | |
| 1 | Left window |
| 2 | Right window |
| 3 | - |
| 4 | HVAC blower |
| 5 | Battery 2 |
| 6 | Electric steering column |
| 7 | - |
| 8 | Battery 3 |
| 9 | Engine control module/Battery |
| 10 | Body control module 2 On/Off |
| 11 | - |
| 12 | - |
| 13 | - |
| 14 | - |
| 15 | Transmission control module On/Off |
| 16 | Amplifier |
| 17 | - |
| 18 | Battery 7 |
| 19 | - |
| 20 | Battery 1 |
| 21 | Battery 4 |
| 22 | Battery 6 |
| 23 | Electric steering column lock |
| 24 | Airbag sensing diagnostic module/ Passenger sensing module |
| 25 | Diagnostic link |
| 26 | - |
| 27 | AC DC inverter |
| 28 | - |
| 29 | Body control module 8 |
| 30 | Overhead console |
| 31 | Steering wheel control |
| 32 | - |
| 33 | HVAC |
| 34 | Center gateway module |
| 35 | Integrated chassis control module |
| 36 | Charger |
| 37 | Auxiliary power outlet/Cigar lighter |
| 38 | OnStar |
| 39 | Monitor |
| 40 | Object detection |
| 41 | Body control module 1 On/Off |
| 42 | Radio |
| 43 | Rear accessory power outlet |
| 44 | Front accessory power outlet |
| Relays | |
| K1 | - |
| K2 | Retained accessory power |
| K3 | - |
| K4 | - |
| K5 | Logistics |
Engine compartment fuse box:
| Fuse/Relay N° | Functions |
| Fuses | |
| 1 | - |
| 2 | - |
| 3 | ABS pump |
| 5 | AC DC inverter |
| 6 | Rear closure |
| 7 | Left corner lamp |
| 8 | Power windows/ Rearview mirror/ Power seats |
| 9 | Engine boost |
| 10 | Airbag sensing diagnostic module/ Passenger sensing module - eAssist |
| 11 | DC DC Battery 1 |
| 12 | Rear window defogger |
| 13 | Heated mirrors |
| 14 | - |
| 15 | Passive entry/ Passive start |
| 16 | Front wipers |
| 17 | Passenger power seat |
| 18 | ABS valve |
| 19 | Driver power seat |
| 21 | Sunroof |
| 22 | Right corner lamp |
| 23 | Auto headlamp leveling |
| 24 | - |
| 26 | Transmission control module/Ignition |
| 27 | Instrument panel/ Ignition |
| 28 | Electronic precision shift/Ignition |
| 29 | Rear vision camera/ Ventilation |
| 30 | Malfunction indicator lamp/Shift solenoid |
| 32 | Canister vent solenoid |
| 33 | Front heated seats |
| 34 | BSM (eAssist)/Fan control module/ Damping control module (SADS) |
| 35 | Fog lamps |
| 36 | Fuel module |
| 38 | - |
| 39 | - |
| 40 | Steering columnn lock |
| 41 | - |
| 43 | Heated steering wheel |
| 44 | Headlamp leveling/ Rear seat ventilation |
| 45 | - |
| 46 | Engine control module/Ignition |
| 47 | - |
| 48 | Engine boost/Left cooling fan |
| 49 | DC DC battery 2/AWD |
| 50 | - |
| 51 | - |
| 52 | - |
| 53 | - |
| 54 | - |
| 55 | - |
| 56 | - |
| 57 | Transmission auxiliary pump |
| 58 | TRCM |
| 59 | High-beam headlamps |
| 60 | Cooling fan |
| 61 | - |
| 62 | - |
| 63 | - |
| 65 | A/C HEV |
| 67 | - |
| 68 | - |
| 69 | Right HID low-beam headlamps |
| 70 | Left HID low-beam headlamps |
| 72 | Starter pinion |
| 74 | Starter motor |
| 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 | Engine control module switch 2 |
| 86 | Engine control module switch 1 |
| 87 | SAI reaction pump |
| 88 | Aeroshutter |
| 89 | Headlamp washer |
| 91 | - |
| 92 | TPIM motor generator unit pump |
| 93 | Headlamp leveling |
| 95 | SAI reaction solenoid |
| 96 | Fuel heater |
| 97 | - |
| 99 | Coolant pump |
| Relays | |
| 4 | AC DC inverter |
| 20 | Rear defogger |
| 25 | Front wiper control |
| 31 | Run/Crank |
| 37 | Front wiper speed |
| 42 | Transmission auxiliary pump |
| 64 | A/C control |
| 66 | Powertrain |
| 71 | HID low-beam headlamps |
| 73 | Starter motor |
| 80 | Starter pinion |
| 90 | SAI reaction solenoid |
| 94 | Headlamp washer |
| 98 | SAI reaction pump |
