Buick Regal 4 generation was produced in 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006. In this post you will find a description of Buick Regal 4G fuses and relays with fuse box diagrams, their locations and photo examples of implementation. Let’s highlight the cigarette lighter fuse.
The purpose of the fuses in the boxes may differ from the material presented, and depends on the year of manufacture and the level of equipment of your car.
Passenger compartment
Inside the car the fuse box is located on right side of the instrument panel, behind the cover.
Check the information with your diagrams on the back of the protective cover.
Diagram
Assignment
| 1 | – |
| 4 | Ignition Signal – Hot in Run and Start – PCM, BCM U/H Relay |
| 6 | Power Mirrors |
| 8 | Panel Dimming |
| 10 | Ignition Signal – Hot in Run, Unlock and Start – Cluster, Powertrain Control Module, Body Control Module |
| 13 | DRL Module |
| 14 | Interior Lamps |
| 15 | Door Locks |
| 17 | Taillamps, License Lamp |
| 18 | Radio |
| 19 | Heated Mirror |
| 20 | Cruise Control |
| 22 | Clusters |
| 23 | Cigarette Lighter – Auxiliary Power Connection (Power Drop), Data Link |
| 24 | Stoplamps |
| 26 | Parking Lamps |
| 27 | Auxiliary Power Connection (Power Drop) – Hot in ACC and RUN |
| 28 | Crank Signal – Body Control Module, Cluster, Powertrain Control Modules |
| 29 | Ignition Signal – HVAC Control Head |
| 30 | Brake Transmission Shift Interlock (BTSI) |
| 31 | Air Bag |
| 32 | Anti-lock Brake Controls, Body Control Module |
| 33 | Hazard Flashers |
| 34 | – |
| 36 | Ignition Signal – Hot in ACC and Run – Body Control Module |
| 37 | Anti-lock Brake Solenoids |
| 38 | Low Blower |
| 39 | Anti-lock Brakes |
| 40 | Turn Signals |
| 41 | Radio, HVAC Head, Remote Keyless Entry, Cluster |
| 42 | High Blower |
| 43 | – |
| 44 | Audio Steering Wheel Controls |
| 45 | Wipers |
| Circuit Breakers | |
| A | – |
| B | Power Windows/ Sunroof |
| C | Rear Defog |
| D | Power Seats |
Fuse 23 is responsible for the cigarette lighter.
Engine compartment
Under the hood the fuse and relay box is located on the left side.
An example of a diagram from the back of the cover
Diagram
Designation
| 1 | Cooling Fan |
| 2 | Starter Solenoid |
| 3 | Power Seats, Rear Defog |
| 4 | High Blower, Hazard Flasher, Stoplamps, Power Mirror, Door Locks |
| 5 | Ignition Switch, BTSI, Stoplamps, ABS, Turn Signals, Cluster, Air Bag, DRL Module |
| 6 | Cooling Fan |
| 7 | Interior Lamps, Retained Accessory Power, ABS, Keyless Entry, Data Link, HVAC Head, Cluster, Radio, AUX Power (Power Drop), Cigarette Lighter |
| 8 | Ignition Switch, Wipers, Radio, Steering Wheel Controls, Body Control Module, AUX Power (Power Drop), Power Windows, Sunroof, HVAC Controls, DRL, Rear Defog Relay |
| 20 | – |
| 21 | Generator |
| 22 | ECM |
| 23 | A/C Compressor Clutch |
| 24 | – |
| 25 | Electronic Ignition |
| 26 | Transaxle |
| 27 | Horn |
| 28 | Fuel Injector |
| 29 | Oxygen Sensor |
| 30 | Engine Emissions |
| 31 | – |
| 32 | Headlamp (Right) |
| 33 | Rear Compartment Release |
| 34 | Parking Lamps |
| 35 | Fuel Pump |
| 36 | Headlamp (Left) |
| 37 | Spare |
| 38 | Spare |
| 39 | Spare |
| 40 | Spare |
| 41 | Spare |
| 42 | Spare |
| 43 | Fuse Puller |
| A/C Commessor Clutch Diode | |
| Relays | |
| 9 | Cooling Fan 2 |
| 10 | Cooling Fan 3 |
| 11 | Starter Solenoid |
| 12 | Cooling Fan 1 |
| 13 | Ignition Main |
| 14 | – |
| 15 | A/C Clutch |
| 16 | Horn |
| 17 | – |
| 18 | – |
| 19 | Fuel Pump |
Still have questions? Ask them in the comments.