What does the exclamation mark warning light in a Corolla mean?

[DiPaige]

There are five possible scenarios when an exclamation mark appears on the car's dashboard: general malfunction, automatic transmission failure, brake system failure, abnormal tire pressure, and lighting system failure. Below is a detailed analysis of these five situations: General malfunction: A triangle with an exclamation mark inside indicates a fault in the vehicle's general performance, components, or functions. Common issues include parking sensor failure, fuel cutoff system intervention or malfunction, external light failure, or engine oil pressure sensor malfunction. It is necessary to visit a 4S shop for inspection to identify the source of the fault. Automatic transmission failure: A yellow gear with an exclamation mark inside is the automatic transmission warning light, indicating a transmission fault or that the transmission fluid level is below the normal range. The transmission fluid should be replaced promptly. Brake system failure: An exclamation mark inside a circle with parentheses represents a brake system warning, typically indicating a brake system malfunction or low brake fluid level. Immediate inspection and repair of the brake system are required to avoid accidents. Abnormal tire pressure: An exclamation mark with a horizontal line below parentheses is the tire pressure monitoring warning light. This light illuminates when the tire pressure is too low. Check the tire pressure and restore it to the normal range. Lighting failure: A yellow bulb with an exclamation mark is the lighting failure indicator, signaling a fault in one of the vehicle's lights. Solution: Visit a 4S shop for inspection as soon as possible, or conduct a self-check focusing on commonly used bulbs such as turn signals, fog lights, and interior lighting to identify the problem.