Buick's malfunction indicator light (MIL) illuminates when the ignition is turned on, indicating that it is operational. If the light remains on while the engine is running, it signifies an abnormality in the emission control system. In addition to the MIL, there are numerous warning and indicator lights. The exclamation mark on the dashboard can appear in three different scenarios: 1. An exclamation mark inside a circled parenthesis: This indicates brake pad wear or insufficient brake fluid. The solution is to release the parking brake and check if the brake fluid level is low. If the light persists, visit a repair shop to replace the brake pads. 2. An exclamation mark inside a triangle: This signals a malfunction in the exterior lights. The solution is to inspect the lights for any faults. If no issues are found but the light remains on, it is advisable to seek professional repair. 3. An exclamation mark inside yellow parentheses: This indicates a problem with the tire pressure in one of the tires. The solution is to check if the tire is punctured or leaking air. If not, drive at a low speed and locate an auto repair shop, car care center, or roadside car wash, as these places typically have air pumps to inflate the tire. After inflating, observe the dashboard. If the warning light does not turn off, access the settings via the vehicle's central console to recheck the tire pressure. Once the pressure is confirmed to be normal, the light should extinguish.
