Buick Cascada (2018) – fuse box diagram
Year of production: 2018
Engine Compartment Fuse Block
| Fuses | Usage |
| 1 | Engine control module |
| 2 | O2 sensor |
| 3 | Fuel injection/ Ignition system |
| 4 | Fuel injection/ Ignition system |
| 5 | — |
| 6 | Heated mirrors |
| 7 | Fan control |
| 8 | O2 sensor/ Powertrain cooling |
| 9 | Rear window sensor |
| 10 | Vehicle battery sensor |
| 11 | Trunk release |
| 12 | Adaptive headlamps/ Automatic headlamp leveling |
| 13 | ABS valves |
| 14 | — |
| 15 | Engine control module |
| 16 | Starter |
| 17 | Transmission control module |
| 18 | Rear window defogger |
| 19 | Front power window |
| 20 | Rear power window |
| 21 | Rear electrical center |
| 22 | — |
| 23 | — |
| 24 | Right high-beam headlamp |
| 25 | Left high-beam headlamp |
| 26 | Front fog lamps |
| 27 | — |
| 28 | — |
| 29 | Electric parking brake |
| 30 | ABS pump |
| 31 | — |
| 32 | Airbag |
| 33 | Adaptive forward lighting/Automatic headlamp leveling |
| 34 | Exhaust gas recirculation |
| 35 | Power windows/Rain sensor/Exterior mirror |
| 36 | Climate control |
| 37 | — |
| 38 | Vacuum pump |
| 39 | Fuel system control module |
| 40 | Front windshield washer |
| 41 | — |
| 42 | Engine cooling fan |
| 43 | Windshield wipers |
| 44 | — |
| 45 | Engine cooling fan |
| 46 | — |
| 47 | Horn |
| 48 | Engine cooling fan |
| 49 | Fuel pump |
| 50 | Headlamp leveling/ Adaptive forward lighting |
| 51 | — |
| 52 | — |
| 53 | Transmission control module/Engine control module |
| 54 | Vacuum pump/ Instrument panel cluster/HVAC |
Instrument Panel Fuse Block
The instrument panel fuse block is on the driver side of the instrument panel.
| Fuses | Usage |
| 1 | Displays |
| 2 | Body control module/Exterior lamps |
| 3 | Body control module/Exterior lamps |
| 4 | Infotainment system |
| 5 | Infotainment system/ Instrument cluster |
| 6 | Power outlet |
| 7 | Power outlet |
| 8 | Body control module/Left low-beam headlamp |
| 9 | Body control module/Right low-beam headlamp |
| 10 | Body control module/Door locks |
| 11 | Interior fan |
| 12 | Driver power seat |
| 13 | Passenger power seat |
| 14 | Diagnostic connector |
| 15 | Airbag |
| 17 | A/C system |
| 18 | Service diagnose |
| 19 | Body control module/Brake lamps/Reverse lamps/Interior lamps |
| 20 | — |
| 21 | Instrument panel |
| 22 | Ignition |
| 23 | Body control module |
| 24 | Body control module |
| 25 | — |
| 26 | Trunk power outlet accessory |
| Relays | Usage |
| 16 | Trunk lid relay |
Rear Compartment Fuse Block
The rear compartment fuse block, if equipped, is on the left side of the trunk behind a cover.
| Fuses | Usage |
| 1 | Convertible control module/Right power rail |
| 2 | — |
| 3 | Rear parking assist |
| 4 | Selective catalytic reduction system |
| 5 | — |
| 6 | — |
| 7 | Power seats |
| 8 | Convertible control module |
| 9 | Selective catalytic reduction system |
| 10 | Selective catalytic reduction system |
| 11 | Tire pressure monitor/Rear vision camera |
| 12 | Convertible control module/Reverse lamps |
| 13 | — |
| 14 | Rear seat electrical folding |
| 15 | — |
| 16 | Rear vision camera/ Convertible control module |
| 17 | — |
| 18 | — |
| 19 | Heated steering whee |
| 20 | — |
| 21 | Heated seats |
| 22 | — |
| 23 | Convertible control module/Left power rail |
| 24 | Selective catalytic reduction system |
| 25 | — |
| 26 | Non-logistic mode |
| 27 | Passive entry/ Passive start |
| 28 | — |
| 29 | Hydraulic unit |
| 30 | — |
| 31 | — |
| 32 | — |
WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.