The Buick Envision 2016-2020 showcases Buick’s dedication to combining luxury, technology, and performance in the compact SUV segment. Its advanced electrical system includes essential components such as the fuse box and relays.
The fuse box in the 2016-2020 Buick Envision 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 Envision of this era include advanced infotainment systems, climate control features, power-adjustable seats, and advanced driver assistance systems (ADAS). These features rely on a robust electrical infrastructure to enhance comfort, convenience, and safety for occupants.
Understanding the layout and function of the fuse box and relays is crucial for maintaining and troubleshooting the 2016-2020 Buick Envision’s electrical systems. Regular inspection and maintenance of these components help ensure the vehicle’s reliability and performance, maintaining its reputation as a luxurious and dependable SUV in Buick’s lineup.
(2016-2020) Buick Envision 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 Envision 2016-2020 fuse assignment
- Cigar lighter (power outlet) fuses in the Buick Envision are the fuse №F8 (Accessory power outlet) in the Passenger compartment and №F8 (Rear accessory power outlet) in the Luggage compartment.
Year of production: 2016, 2017, 2018, 2019, 2020
Passenger compartment fuse box
Fuse Box Location
It is located in the glove box.
To access the fuses, open the fuse panel door from the passenger side by pulling it out.
Fuse box diagram
Assignment of the fuses in the Passenger compartment (2016-2020)
| № | Description |
|---|---|
| F1 | — |
| F2 | Front HVAC blower |
| F3 | Power seat |
| F4 | Lighter (China only) |
| F5 | — |
| F6 | Front power windows |
| F7 | — |
| F8 | 2016-2018: Accessory power outlet 2019-2020: Mid accessory power outlet |
| F9 | Body control module 8 |
| F10 | Rear power windows |
| F11 | — |
| F12 | Sunroof |
| F13 | Front heated seats |
| F14 | Outside rearview mirror |
| F15 | Body control module 3 |
| F16 | — |
| F17 | 2016-2018: Body control module 6 2019-2020: Not Used |
| F18 | Body control module 7 |
| F19 | Data link connector |
| F20 | SDM |
| F21 | HVAC |
| F22 | Liftgate release |
| F23 | Passive entry/ Passive start |
| F24 | OCC sensor |
| F25 | Steering wheel controls |
| F26 | 2016-2018: Ignition 2019-2020: Column lock assembly |
| F27 | Body control module 4 |
| F28 | Transmission control module |
| F29 | Body control module 2 |
| F30 | USB |
| F31 | Rear HVAC blower |
| F32 | Body control module 1 |
| F33 | Universal remote system/garage door opener |
| F34 | Parking assist |
| F35 | OnStar |
| F36 | Display |
| F37 | Radio |
Fuse Box in the engine compartment
Fuse Box Location
Fuse box diagram
Assignment of the fuses and relays in the engine compartment (2016-2020)
| № | Description |
|---|---|
| F01 | Starter 1 |
| F02 | Starter 2 |
| F03 | 2016-2018: Non walk 2019-2020: Canister purge solenoid |
| F04 | Engine control module |
| F05 | 2016-2018: FlexFuel 2019-2020: FlexFuel/Aero shutter motor |
| F06 | –/Transmission control module |
| F07 | — |
| F08 | Engine control module |
| F09 | A/C |
| F10 | Canister vent solenoid |
| F11 | Fuel pump |
| F12 | Heated seats |
| F13 | Engine coolant pump |
| F14 | — |
| F15 | O2 sensor |
| F16 | 2016-2018: Ignition coils – odd 2019-2020: Ignition coils |
| F17 | 2016-2018: Ignition coils – even 2019-2020: Engine control module |
| F18 | — |
| F19 | — |
| F20 | DC DC/Transmission |
| F21 | Liftgate |
| F22 | ABS |
| F23 | Washer pump |
| F24 | Headlamp washer |
| F25 | — |
| F26 | Transmission oil pump |
| F27 | ABS |
| F28 | — |
| F29 | Rear window defogger |
| F30 | Mirror defogger |
| F31 | — |
| F32 | Various low current functions/Circuit 39 splice |
| F33 | — |
| F34 | Horn |
| F35 | — |
| F36 | Right high-beam headlamp |
| F37 | Left high-beam headlamp |
| F38 | Automatic headlamp leveling |
| F39 | Front fog lamps |
| F40 | Transmission oil pump |
| F41 | Passenger seat ventilation |
| F42 | Headlamp position |
| F43 | — |
| F44 | Interior rearview mirror |
| F45 | — |
| F46 | Driver seat ventilation |
| F47 | Electric steering column lock |
| F48 | Rear wiper |
| F49 | — |
| F50 | — |
| F51 | 2016-2018: Right daytime running lamp 2019-2020: Right low-beam headlamps |
| F52 | Engine control module/ Transmission control module |
| F53 | — |
| F54 | — |
| F55 | Front wiper |
| F56 | — |
| F57 | 2016-2018: Left daytime running lamp 2019-2020: Left low-beam headlamps |
| K01 | Start/Stop |
| K02 | A/C clutch |
| K03 | Engine control module |
| K04 | Wiper |
| K05 | Start solenoid |
| K06 | — |
| K07 | — |
| K08 | Transmission oil pump |
| K09 | Wiper speed |
| K10 | Starter |
| K11 | Headlamp washers |
| K12 | High-beam headlamps |
| K13 | 2016-2018: Daytime running lamps 2019-2020: Low-beam headlamps |
| K14 | Run/Crank |
| K15 | Rear window/Mirror defogger |
Fuse Box in the luggage compartment
Fuse Box Location
It is behind a cover on the left side of the rear compartment.
To access, turn the latch with a coin or flat bladed tool, remove the access cover.
Fuse box diagram
Assignment of the fuses and relays in the Luggage compartment (2016-2020)
| № | Description |
|---|---|
| F1 | — |
| F2 | DC AC |
| F3 | 2016-2019: — 2020: — / Passenger power seat |
| F4 | 2016-2019: Passenger power seat 2020: Passenger power seat / — |
| F5 | Memory seat module |
| F6 | 2016-2018: Not Used 2019-2020: Central gateway module |
| F7 | Amplifier |
| F8 | Rear accessory power outlet |
| F9 | Rear heated seat |
| F10 | Logistics relay |
| F11 | Rear HVAC |
| F12 | Power liftgate HF sensor |
| F13 | Parking/Trailer lamps |
| F14 | Side blind zone alert |
| F15 | Left parking lamp |
| F16 | Right parking lamp |
| F17 | Body control module 6 |
| F18 | Heated steering wheel |
| F19 | 2016-2018: AWD 2019-2020: Rear drive control module |
| F20 | Lumbar seat |
| F21 | Rear heated seat |
| F22 | Rear drive control module |
| F23 | Trailer left turn signal lamp |
| F24 | Trailer right turn signal lamp |
| K1 | Parking lamps |
| K2 | — |
| K3 | Ignition/Run |
| K4 | Logistics |
| K5 | DC AC |
| K6 | — |
| K7 | 2016-2018: Parking assist 2019-2020: Park lamps |
| K8 | 2016-2018: Right turn 2019-2020: Trailer right turn signal lamps |
| K9 | 2016-2018: Left turn 2019-2020: Trailer left turn signal lamps |
| K10 | — |
Conclusion
For owners and enthusiasts of classic Buick Envision models from 2016-2020, 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.
