Buick Lacrosse (2010 – 2016) – fuse box diagram
Year of production: 2010, 2011, 2012, 2013, 2014, 2015, 2016
Passenger Compartment Fuse Box
| № | A | Protected Component |
| 1 | 2 | Steering Wheel Control Switch |
| 2 | 15 | Body Control Module (BCM) |
| 3 | 15 | Body Control Module (BCM) |
| 4 | 15 | Audio System |
| 5 | 7.5 | Vehicle Communications Interface Module (VCIM) |
| 6 | 20 | Accessory Power Outlet (Center Console 1) |
| 7 | 20 | Accessory Power Outlet (Center Console 2) |
| 8 | 15 | Body Control Module (BCM) |
| 9 | 15 | Body Control Module (BCM) |
| 10 | 30 | Body Control Module (BCM) |
| 11 | 40 | HVAC Control Module |
| 12 | 25 | Circuit Breaker: Passenger Seat |
| 13 | 25 | Circuit Breaker: Driver Seat, Seat Memory Control Module |
| 14 | 7.5 | Data Link Connector |
| 15 | 10 | Inflatable Restraint Sensing and Diagnostic Module (SDM) |
| 16 | 10 | Rear Compartment Lid Latch |
| 17 | 10 | HVAC Control Module |
| 18 | 25 | Audio System |
| 19 | 10 | Head Up Display (HUD), Info Display Module, Multimedia Player Interface Module, Radio/HVAC Control |
| 20 | 5 | Inflatable Restraint Passenger Presence System (PPS) Module |
| 21 | 5 | Instrument Panel Cluster (IPC) |
| 22 | 2 | Ignition Switch |
| 23 | 15 | Body Control Module (BCM) |
| 24 | 15 | Body Control Module (BCM) |
| 25 | – | – |
| 26 | 30 | Accessory AC/DC Power Control Module |
| Relay | ||
| R1 | Accessory | |
| R2 | – | |
| R3 | Rear Compartment Lid Unlatch | |
Engine Compartment Fuse Box
| № | A | Protected Component |
| 1 | 15 | Transmission Control Solenoid Valve Assembly |
| 2 | 5 | Engine Control Module (ECM) |
| 3 | 10 | ’14: A/C Compressor Clutch |
| 4 | – | – |
| 5 | 5 | Engine Control Module (ECM) |
| 6 | 30 | Windshield Wiper Motor |
| 7 | – | – |
| 8 | 15 | 3.0L (LF1), 3.6L (LLT, LFX): Ignition Coils, Engine Control Module (ECM) |
| 9 | 15 | 3.0L (LF1), 3.6L (LLT, LFX), 2.4L (LUK): Ignition Coils, Engine Control Module (ECM) |
| 10 | 20 | Engine Control Module (ECM) |
| 11 | 10 | 3.0L (LF1), 3.6L (LLT, LFX): Heated Oxygen Sensors |
| 10 | 3.6L (LFX): Heated Oxygen Sensors, Mass Air Flow (MAF) Sensor/Intake Air Temperature (IAT) Sensor, Fuel Composition Sensor | |
| 12 | 30 | Starter Motor |
| 13 | 7.5 | Fuel Pump Flow Control Module, Transmission Control Solenoid Valve Assembly |
| 14 | 5 | 2.4L (LUK – Hybrid): Heater Coolant Pump |
| 15 | 10 | 2.4L (LUK – Hybrid): Starter/Generator Control Module |
| 16 | 7.5 | 3.6L (LLT): Mass Air Flow (MAF) Sensor/Intake Air Temperature (IAT) Sensor |
| 17 | 5 | Inflatable Restraint Sensing and Diagnostic Module (SDM) |
| 18 | – | – |
| 19 | – | – |
| 20 | – | – |
| 21 | 30 | Window Switch (Left Rear/Right Rear) |
| 22 | 30 | Sunroof Control Module, Sunroof Sunshade Motor Module |
| 23 | 10 | Power Steering Control Module |
| 7.5 | 2.4L (LUK – Hybrid): Hybrid/EV Battery Pack | |
| 24 | 30 | “14: Window Switch (Left Front/Right Front) |
| 25 | – | – |
| 26 | 60 | ABS |
| 27 | 30 | Parking Brake Control Module |
| 28 | 40 | Rear Window Defogger |
| 29 | 15 | Seat Lumbar Adjuster Switch – Driver |
| 30 | 15 | 2.4L (LUK -Hybrid): Hybrid/EV Battery Pack Cooling Fan |
| 31 | – | – |
| 32 | 15 | Body Control Module (BCM) |
| 33 | 25 | Heated Seat Control Module |
| 25 | Memory Seat Module | |
| 34 | 25 | ABS |
| 35 | 30 | Audio Amplifier |
| 36 | 10 | Adaptive Forward Lighting (AFL) |
| 37 | 10 | Right Headlamp (High Beam), High Beam Solenoid Actuator (Right) |
| 38 | 10 | Left Headlamp (High Beam), High Beam Solenoid Actuator (Left) |
| 39 | – | – |
| 40 | – | – |
| 41 | 20 | Brake Booster Pump Motor |
| 42 | 30 | Cooling Fan Motor (Right) |
| 43 | – | – |
| 44 | 30 | 2.4L (LUK -Hybrid): Transmission Fluid Pump |
| 45 | 30 | Cooling Fan Motor (Left) |
| 46 | 10 | Cooling Fan Low Speed Relay, Cooling Fan Left High Speed Relay |
| 47 | 10 | 2.4L (LAF), 3.0L (LF1), 2.4L (LUK): Heated Oxygen Sensors, Mass Air Flow (MAF) Sensor/Intake Air Temperature (IAT) Sensor |
| 10 | 3.6L (LLT): Camshaft Position (CMP) Actuators | |
| 10 | 3.6L (LFX): Heated Oxygen Sensor, Multifunction Intake Air Sensor, Evaporative Emission Purge Solenoid Valves | |
| 48 | 15 | Front Fog Lamps |
| 49 | 15 | Right Headlamp (Low Beam) |
| 50 | 15 | Left Headlamp (Low Beam) |
| 51 | 15 | Horn |
| 52 | 5 | Instrument Panel Cluster (IPC) |
| 53 | 10 | Air Quality Sensor, Brake Booster Vacuum Switch, Inside Rearview Mirror, Rearview Camera, Active Grille Air Shutter Actuator |
| 54 | 5 | HVAC Control Module |
| 55 | 7.5 | Outside Rearview Mirror Switch, Window Switch (Driver/Passenger Side), Garage Door Opener |
| 56 | 15 | Windshield Washer Fluid Pump |
| 57 | – | – |
| 58 | – | – |
| 59 | 50 | Secondary Air Injection Pump |
| 60 | 7.5 | Heated Mirror |
| 61 | – | – |
| 62 | 10 | Evaporative Emission (EVAP) Canister Vent Solenoid Valve |
| 63 | – | – |
| 64 | 5 | Headlamp Control Module |
| 65 | – | – |
| 66 | 15 | Secondary Air Injection Pressure Sensor |
| 67 | 20 | Fuel Pump Flow Control Module |
| 68 | – | – |
| 69 | 5 | Body Control Module (BCM) |
| 70 | 5 | Side Object Sensor (Left/Right), Rear Parking Assist Control Module |
| 71 | – | – |
| Relay | ||
| R1 | Air Conditioning Compressor Clutch | |
| R2 | Starter | |
| R3 | – | |
| R4 | Front Wiper (Speed Control) | |
| R5 | Front Wiper (On/Off) | |
| R6 | 2.4L (LUK -Hybrid): Heater Coolant Pump | |
| R7 | Engine Control Module (ECM) | |
| R8 | – | |
| R9 | Cooling Fan Right (High Speed) | |
| R10 | Cooling Fan (Low Speed) | |
| R11 | 2.4L (LUK -Hybrid): Transmission Fluid Pump | |
| R12 | – | |
| R13 | Cooling Fan Left (High Speed) | |
| R14 | Low Beam | |
| R15 | Ignition | |
| R16 | Secondary Air Injection Pump | |
| R17 | Rear Window Defogger | |
| Relay (Non-Serviceable) | ||
| R18 | Horn | |
| R19 | Windshield Washer Pump | |
| R20 | Front Fog Lamp | |
| R21 | High Beam | |
| R22 | Door Locks | |
| R23 | 2.4L (LUK – Hybrid): Starter/Generator Control Module | |
Fusible Link Block
| No. | A | Circuit Protected |
| 1 | 100 | Fuse Block (Instrument Panel) |
| 2 | 100 | Fuse Block (Instrument Panel) |
| 3 | 100 | Fuse Block (Rear Left) |
| 4 | 100 | Fuse Block (Rear Left) |
| 5 | 250 | Fuse Block (Underhood) |
| 6 | 300 | Starter Motor |
WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.