The Buick Cascada, produced from 2016 to 2019, exemplifies Buick’s dedication to combining elegance and open-air driving pleasure in the convertible segment. Its advanced electrical system includes essential components such as the fuse box and relays.
The fuse box in the Buick Cascada 2016–2019 houses fuses designed to protect electrical circuits from overloads and short circuits, ensuring the safety of critical components like headlights, taillights, and power windows. Relays, serving as electrically controlled switches, manage the flow of electricity to systems such as the starter motor, fuel pump, and cooling fans, ensuring efficient and reliable operation.
Additional sophisticated electrical components in the Buick Cascada of this era include advanced infotainment systems, climate control features, power-adjustable seats, and a power-operated convertible top. These features rely on a robust electrical infrastructure to enhance comfort, convenience, and driving enjoyment for occupants.
Understanding the layout and function of the fuse box and relays is crucial for maintaining and troubleshooting the Buick Cascada 2016–2019’s electrical systems. Regular inspection and maintenance of these components help ensure the vehicle’s reliability and performance, maintaining its reputation as a stylish and dependable convertible in Buick’s lineup.
MUST READ: DYI – How to Check Car Fuses?
(2016-2019) Buick Cascada fuse box and relay with Diagram
WARNING
- Never replace a fuse with one that has a higher amperage rating.
- A fuse with a too-high amperage could damage the electrical part and cause a fire.
- On no account should fuses be repaired (e.g. patched up with tin foil or wire) as this may cause serious damage elsewhere in the electrical circuit or cause a fire.
- If a fuse blows repeatedly, do not keep replacing it. Instead, have the cause for the repeated short circuit or overload tracked and fixed.
- Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.
Buick Cascada 2016-2019 fuse assignment
- Cigar lighter (power outlet) fuses in the Buick Cascada are the fuses №. 6 and 7 in the Instrument panel.
Year of production: 2016, 2017, 2018, 2019
Engine compartment fuse box
Fuse Box Location
It is located in the front left of the engine compartment.
Fuse box diagram
Assignment of the fuses in the engine compartment
| № | Circuit |
|---|---|
| 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 box
Fuse Box Location
It is located behind the storage compartment in the instrument panel.
Fuse box diagram
Assignment of the fuses in the Instrument panel
| № | Circuit |
|---|---|
| 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 |
| 16 | Trunk lid relay |
| 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 |
Luggage compartment fuse box
Fuse Box Location
It is on the left side of the load compartment behind a cover.
Fuse box diagram
Assignment of the fuses in the load compartment
| № | Circuit |
|---|---|
| 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 | — |
Conclusion
For owners and enthusiasts of classic Buick Cascada 2016-2019, understanding the fuse box and relay systems is essential for vehicle maintenance. Regular inspection and maintenance of these components helped ensure the vehicle’s longevity and reliability, preserving its status as a symbol of Buick’s craftsmanship and innovation in the automotive industry during that era.
