The 5th generation Buick Regal was produced in 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 and 2017. During this time, the model underwent a facelift. In this post we will show the locations of all electronic control units, a description of fuses and relays Buick Regal with fuse box diagrams and photographs. Note the fuse responsible for the cigarette lighter.
The number of elements in the boxes and their purpose may differ from that shown and depends on the year of manufacture and the country of delivery of your Buick Regal.
Contents
Locations
General layout of electronic control units
Assignment
| 1 | ABS electronic control unit |
| 2 | Air conditioner / heater fan motor control unit – near heater fan motor |
| 3 | Air conditioning / heater control unit – behind the heater control panel |
| 4 | Shock sensor (SRS) – bonnet panel (amplifier) |
| 5 | Side impact sensor, left – in the B-pillar |
| 6 | Side impact sensor, right – in the B-pillar |
| 7 | Anti-theft alarm sound |
| 8 | Anti-theft control unit (with volume control) – on the ceiling panel |
| 9 | Powerful anti-theft alarm siren |
| 10 | Anti-theft Relay – Integrated in the engine compartment fuse / relay box1 |
| 11 | Bodywork power connector relay – in the under-dash fuse / relay box |
| 12 | Accumulator battery |
| 13 | Tailgate Release Actuator Relay – In the under-dash fuse / relay box |
| 14 | Fuel filler flap lock actuator relay – in the luggage compartment fuse / relay box |
| 15 | Central locking relay (driver’s door) – integrated in engine fuse / relay box 1 |
| 16 | Diagnostic connector (DLC) |
| 17 | Differential lock control unit – on the rear gearbox |
| 18 | Audio system (DAB) receiver – behind the glove compartment |
| 19 | Additional electric heater – on the heater fan housing |
| 20 | Electric parking brake control unit – behind the wheel arch |
| 21 | Electronic engine control unit – near battery |
| 22 | Fog lamp relay – integrated in engine fuse / relay box 1 |
| 23 | Fuse / relay box, engine compartment 1 |
| 24 | Fuse / relay box, engine compartment 2- on battery |
| 25 | Pre-guards / relay block, engine compartment З – near the battery |
| 26 | Fuse / Relay Box, Engine Compartment 4 – Near Cooling Fan Motor |
| 27 | Fuse / Relay Box, Instrument Panel – Behind the Instrument Panel, Left |
| 28 | Security guard / relay block, luggage compartment – behind the trim panel |
| 29 | Glow plug control unit – near battery |
| 30 | Headlamp control unit – behind the dash |
| 31 | Headlamp high beam relay – built into the pre-guards / relay box in the engine compartment 1 |
| 32 | Horn – behind the front bumper |
| 33 | Horn relay – integrated in engine fuse / relay box 1 |
| 34 | Auxiliary Ignition 1 Relay – In the under-dash fuse / relay box |
| 35 | Keyless entry signal receiver – behind the instrument cluster |
| 36 | Multifunctional control unit – functions: Anti-theft system, audible warning / buzzer, central locking, cruise control. CAN data bus, power windows, electrical load control, exterior lamps, headlight washer / washer system, horn, instrument cluster, interior lamps, remote control (keyless entry), rear window wiper / washer, starting system, sunroof control system tire pressure, windshield wiper / washer |
| 37 | Ambient temperature sensor |
| 38 | Parking Assist Control Unit – Behind Luggage Compartment Trim Panel |
| 39 | Power steering control unit – behind the dash |
| 40 | Rain Sensor – Windshield Upper Center |
| 41 | Rear window washer pump motor relay – integrated in engine fuse / relay box 1 |
| 42 | Rear wiper motor relay – Integrated in engine fuse / relay box 1 |
| 43 | Seat heating control unit .L. front – under the seat |
| 44 | Seat heating control unit, right, front – under the seat |
| 45 | SRS electronic control unit – under the center console |
| 46 | Suspension Control Unit – Behind Trim Panel |
| 47 | Acceleration sensor (electronically controlled suspension) 1 – on the suspension cup |
| 48 | Acceleration sensor (electronically controlled suspension) 2- on the suspension cup |
| 49 | Acceleration Sensor (Electronically Controlled Suspension) 3 – Suspended |
| 50 | Acceleration sensor (electronically controlled suspension) 4- on the suspension |
| 51 | Acceleration sensor (electronically controlled suspension) 5 – under the luggage compartment floor |
| 52 | Body height sensor (front left) – on the suspension |
| 53 | Body height sensor (left rear) – on the suspension |
| 54 | Body height sensor (right front) – on the suspension |
| 55 | Rear door electrical control unit (station wagon) – behind the rear door panel |
| 56 | Rear door electrical control unit (hatchback) – behind tailgate trim |
| 57 | Telephone control unit |
| 58 | Trailer control unit – behind the trim panel |
| 59 | Electronic gearbox control unit – at gearbox |
| 60 | Inverter – under the center console |
| 61 | Windshield washer pump relay – Integrated in engine fuse / relay box 1 |
| 62 | Side movement sensor – under the center console |
Engine compartment
Main fuse box
The main fuse and relay box is on the left, next to the battery, and is covered by a protective cover.
Photo for example
Diagram
Designation
| 1 | 15A — Transmission Control Module |
| 2 | 15A — Engine Control Module |
| 5 | 15A — Ignition, Transmission Control Module, Engine Control Module |
| 6 | 30A FMX/JCase — Windshield Wiper |
| 8 | 15A — Fuel Injection, Ignition System Even |
| 9 | 15A — Fuel Injection, Ignition System Odd |
| 10 | 15A — Engine Control Module |
| 10 | 20A — Engine Control Module |
| 11 | 10A — Oxygen Sensor |
| 12 | 30A FMX/JCase — Starter |
| 13 | 7.5A — Fuel System Control Module |
| 14 | 10A — Secondary Air Induction |
| 16 | 7.5A — Vacuum Pump |
| 17 | 5A — Ignition, Airbag |
| 21 | 30A FMX/JCase — Rear Power Windows |
| 22 | 30A FMX/JCase — Antilock Brake System Valve |
| 23 | 10A — Variable Effort Steering |
| 24 | 30A FMX/JCase — Front Power Windows |
| 25 | 30A FMX/JCase — Power Outlets |
| 26 | 60A FMX/JCase — Antilock Brake System Pump |
| 27 | 30A FMX/JCase — Electric Parking Brake |
| 28 | 40A FMX/JCase — Heated Rear Window |
| 29 | 15A — Left-Hand Seat Lumbar |
| 30 | 15A — Right-Hand Seat Lumbar |
| 32 | 20A — Body Control Module 6 |
| 33 | 25A — Heated Front Seats |
| 34 | 25A — Sunroof |
| 35 | 30A — Infotainment System |
| 37 | 10A — Right-Hand High-Beam Headlamp |
| 38 | 10A — Left-Hand High-Beam Headlamp |
| 41 | 30A FMX/JCase — Vacuum Pump |
| 42 | 60A FMX/JCase — Radiator Fan 1 |
| 44 | 25A FMX/JCase — Headlamp Washer System [if equipped] |
| 45 | 50A FMX/JCase — Radiator Fan 2 |
| 46 | 10A — Terminal 87, Main Relay |
| 47 | 10A — Oxygen Sensor |
| 48 | 15A — Fog Lamps |
| 49 | 15A — Right-Hand Low Beam, High Intensity Discharge Headlamp |
| 50 | 15A — Left-Hand Low Beam, High Intensity Discharge Headlamp |
| 51 | 15A — Horn |
| 52 | 5A — Motor Indicator Lamp |
| 53 | 10A — Ignition, Inside Rearview Mirror |
| 55 | 7.5A — Power Windows |
| 56 | 15A — Windshield Washer |
| 59 | 30A — Secondary Air Induction |
| 60 | 7.5A — Heated Mirrors |
| 62 | 10A — Canister Vent Solenoid |
| 67 | 20A — Fuel System Control Module |
| 69 | 5A — Battery Sensor |
| R2 | Relay — Starter |
| R3 | Relay — Cooling Fan (LHU) |
| R4 | Relay — Front Wiper (Step 2) |
| R5 | Relay — Front Wiper (Step 1, Interval) |
| R6 | Relay — SAI Valve |
| R7 | Relay — Main Relay |
| R9 | Relay — Cooling Fan (LAF/LHU) |
| R10 | Relay — Cooling Fan (LAF) |
| R12 | Relay — Cooling Fan (LHU) |
| R13 | Relay — Cooling Fan (LAF/LHU) |
| R14 | Relay — High Intensity Discharge Lamps |
| R15 | Relay — Ignition |
| R16 | Relay — Secondary AIR Pump |
| R17 | Relay — Window/Mirror Defog |
Battery-powered box
A high power fuse box must be attached to the battery cover.
the photo
- 100A Dashboard fuse / relay box
- 100A Dashboard fuse / relay box
- 100A Luggage compartment fuse / relay box
- 100A Luggage compartment fuse / relay box
- Alternator / starter
Passenger compartment
It is located under the dashboard on the driver’s side, behind the glove compartment.
Diagram
Designation
| 1 | 10A A22 Radio control, K33 Driver information center (DIC) display |
| 2 | 20A K9 body control module, exterior lighting |
| 3 | 25A K9 Body Control Module |
| 4 | 20A A11 Radio, P5 Buzzer control unit |
| 5 | 7.5A A12 Digital radio control unit, K82 Mobile phone control unit, T11 Media player interface module |
| 6 | 20A Front power socket ( cigarette lighter ) |
| 7 | 20A Accessory Power Socket |
| 8 | 30A K9 Body Control Module, LH headlight (low beam, halogen) |
| 9 | 30A K9 Body Control Module, RH headlight (low beam, halogen) |
| 10 | 30A K9 Body Control Module, Door Locks |
| 11 | 40A K8 Fan motor control module. Heating (ventilation) and air conditioning system |
| 12 | 25A S64D Seat adjuster switch – driver, S65D Seat lumbar switch – driver |
| 13 | 25A Electric front seats |
| 14 | 7,5А X84 Diagnostic socket |
| 15 | 7.5A K36 airbag diagnostic and monitoring module |
| 16 | 10A Central locking |
| 17 | 10A A26 HVAC control panel, K33 HVAC control unit |
| 18 | 30A KR104A Logistic Mode Relay 1 |
| 19 | 20A Body control module K9 Brake lights, lights |
| 20 | 5A K85 Passenger presence detection module |
| 21 | 10A P16 instrument panel |
| 22 | 5A S39 Ignition lock |
| 23 | 20A Body control module K9 |
| 24 | 20A Body control module K9 |
| 25 | 20A Steering column lock |
| 26 | 20A Accessory Power Connector |
The fuses numbered 6 and 7 at 20A are responsible for the operation of the cigarette lighter and additional sockets.
Several relays can be installed at the top of the block.
Diagram
Assignment
- Trunk open
- Door security
- Power outle
Luggage compartment
In the luggage compartment, this unit is hidden behind the trim on the left side.
Diagram
Appointment
| 1 | 30A Central locking, power rear door |
| 2 | 40A Air conditioner / heater |
| 3 | 40A Trailer control unit |
| 4 | Reserve |
| 5 | 30A Trailer electrical connector |
| 6 | Reserve |
| 7 | Reserve |
| 8 | 30A Trailer electrical connector |
| 9 | Reserve |
| 10 | 30A Heater, coolant |
| 11 | 30A Electric front seats |
| 12 | 10A Power seat memory |
| 13 | Headlight range control, Ride height control system |
| 14 | Reserve |
| 15 | Reserve |
| 16 | Reserve |
| 17 | Seat heater |
| 18 | 20A Rear door electrical control unit (trunk) |
| 19 | Rear window blind |
| 20 | Driver’s seat fan |
| 21 | 7.5A Trailer electrical control unit |
| 22 | 15A Rear window blind |
| 23 | 5A Anti-theft system |
| 24 | Left parking light |
| 25 | Right parking light |
| 26 | Lighting, direction indicators |
| 27 | Lighting, direction indicators |
| 28 | Reserve |
| 29 | 30A Shipping Fuse |
| 30 | 30A Shipping Fuse |
| 31 | 10A Active damping system, automatic high beam switching system, cruise control, traffic sign detection system, lane departure detection system |
| 32 | Parking system |
| 33 | 10A Differential lock control unit, four-wheel drive |
| 34 | 30A Luke |
| 35 | 30A Central locking |
| 36 | Power front seats |
| 37 | Reserve |
And if you have something to add or have questions, write everything in the comments.