The Buick Riviera, produced from 1994 to 1999, stands as an emblem of luxury and technological advancement in the automotive world. This model redefined the standards of elegance and performance, integrating an array of sophisticated electrical components that ensured a seamless and comfortable driving experience. Central to the operation of these systems were the fuse box and relays, which played critical roles in managing the vehicle’s electrical architecture.
The fuse box in the Buick Riviera (1994-1999) contained numerous fuses designed to protect the car’s electrical circuits from potential overloads and short circuits. These fuses were strategically positioned to safeguard key components such as the headlights, taillights, power windows, and the advanced stereo system. Locating and understanding the function of each fuse is important for diagnosing and resolving electrical issues, thereby maintaining the vehicle’s functionality and safety.
Relays in the Buick Riviera (1994-1999) acted as electrically operated switches, controlling the flow of electricity to various critical components. These relays were integral to the operation of systems such as the starter motor, fuel pump, cooling fans, and other essential electrical components. Ensuring the proper function of these relays is vital for the reliable performance of the vehicle’s electrical systems, contributing to the overall dependability of the car.
In addition to the fuse box and relays, the Buick Riviera of this era is equipped with advanced electrical technologies designed to enhance driver and passenger comfort. Features such as electronic climate control, power-adjustable seats, and a premium audio system relied on a robust electrical infrastructure to operate efficiently. These technologies underscored Buick’s commitment to providing a luxurious driving experience through innovative electrical engineering.
(1994-1999) Buick Riviera 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 Riviera 1994-1999 fuse assignment
Year of production: 1994, 1995, 1996, 1997, 1998, 1999
Instrument Panel Fuse Box
Fuse Box Location
It is located behind the lid at the end of the instrument panel near the driver’s door.
Fuse box diagram
Assignment of the fuses in the instrument panel
| № | Description |
|---|---|
| 1 | Air Bag |
| 2 | Injectors |
| 3 | Anti-Lock Brake System |
| 4 | Left Exterior Lamps |
| 5 | Turn Signal Lamps |
| 6 | 1994-1995: Cruise Control; 1996-1999: Oxygen Sensor |
| 7 | Climate Control |
| 8 | Right Exterior Lamps |
| 9 | HVAC Relay |
| 10 | MAF |
| 11 | Auxiliary Power |
| 12 | Interior Lamps |
| 13 | Chime |
| 14 | 1994-1995: Not Used; 1996-1999: TMNSS |
| 15 | 1994-1995: Not Used; 1996-1999: Cruise Control |
| 16 | 1994-1995: Not Used; 1996-1999: Perimeter Lights |
| 17 | Not Used |
| 18 | Not Used |
| 19 | Radio |
| 20 | Cooling Fan |
| 21 | Not Used |
| 22 | Not Used |
| 23 | Windshield Wipers |
| 24 | 1994-1996: Not Used; 1997-1999: Flat Pack Motor |
| 25 | PCM |
| 26 | Cigarette Lighter |
| 27 | Crank |
| 28 | HVAC Blower |
Rear Underseat Fuse Boxes
Fuse Box Location
Two fuse boxes located under the rear seat.
To access the fuse boxes, the rear seat cushion must be removed (pull up on the front of the cushion to release the front hooks, pull the cushion up and out toward the front of the vehicle).
Fuse Box Diagram (Left block)
Assignment of the fuses and relays in the Left Rear Underseat Fuse Box
| № | Description |
|---|---|
| 1 | 1994-1995: Interior Lamps Relay; 1996-1999: Open |
| 2 | Electronic Level Control |
| 3 | Trunk Release Relay |
| 4 | Open |
| 5 | Fuel Pump Relay |
| 6 | Driver Door Unlock Relay |
| 7-10 | Open |
| 11 | Rear Defogger Relay (Upper Zone) |
| 12 | Rear Defogger Relay (Lower Zone) |
| 13 | Open |
| 14-16 | Spare |
| 17-22 | Open |
| 23 | Direct Accessory Power – Accessory |
| 24 | 1994-1995: Direct Accessory Power – Ignition; 1996-1999: Open |
Fuse Box Diagram (Right block)
Assignment of the fuses and relays in the Right Rear Underseat Fuse Box
| № | Description |
|---|---|
| 1-2 | Spare |
| 3 | Open |
| 4 | Circuit Breaker – Power Windows/Sunroof |
| 5-6 | Spare |
| 7 | Open |
| 8-9 | Spare |
| 10 | Open |
| 11 | Circuit Breaker – Power Seats |
| 12-13 | Spare |
| 14 | Open |
| 15 | Power Seats |
| 16 | Circuit Breaker – Headlamps |
| 17 | HVAC Blower Motor |
| 18 | Powertrain Control Module/PASS-Key II |
| 19 | Ignition 3 |
| 20 | Ignition 1 |
| 21 | Rear Defogger |
| 22 | Trunk and Fuel Door Releases |
| 23 | 1994-1996: Heated Seat; 1997-1999: Electronic Level Control |
| 24 | 1994-1996: Electronic Level Control/lnstrument Panel; 1997-1999: Heated Seats/Instrument Panel |
| 25 | Exterior Lamps |
| 26 | Open |
| 27 | Power Door Locks |
| 28 | Interior Lamps |
| 29 | Hazard Lamps/Stoplamps |
| 30 | Parking Lamps |
| 31 | 1994-1997: Not Used; 1998-1999: Heated Mirror |
| 32 | 1994-1995: Back-up Lamps; 1996-1999: Open |
| 33 | Fuel Door Release |
| 34 | Trunk Release |
| 35 | Battery Thermistor |
| 36 | Instrument Panel #2 |
| 37 | Instrument Panel #1 |
| 38 | 1994-1996: Electronic Level Control; 1997-1999: Heated Seats |
| 39 | Fuel Pump |
| 40 | Open |
| 41 | 1994-1995: Not Used; 1996-1999: RR Defog 2 |
| 42 | 1994-1995: Not Used; 1996-1999: RR Defog 1 |
Engine Compartment Fuse Box
The electrical center is located in the engine compartment.
Fuse box diagram
Assignment of the fuses in the engine compartment
| № | Description |
|---|---|
| 1 | Air Conditioning Compressor |
| 2 | Not Used |
| 3 | Not Used |
| 4 | Horn |
| 5 | Not Used |
| 6 | Not Used |
| 7 | Cooling Fan #2 |
| 8 | Cooling Fan #3 |
| 9 | Cooling Fan |
| 10 | ABS Main |
| 11 | ABS Pump Motor |
| 12 | Not Used |
| 13 | Horn |
| 14 | 1994-1996: Flash To Pass; 1997-1999: Not Used |
Conclusion
For owners and enthusiasts of the Buick Riviera (1994-1999), familiarizing themselves with the fuse box and relay systems is crucial for effective vehicle maintenance. Regular inspection and upkeep of these components ensure the vehicle’s longevity and reliability, preserving its legacy as a paragon of luxury and innovation in the automotive industry. Understanding the intricacies of these electrical components enables owners to troubleshoot and address potential issues proactively, thereby maintaining the Riviera’s esteemed performance and elegance.
