What does the exclamation mark in the yellow light on a Passat mean?

[Hayden]

When a yellow exclamation mark appears on the car's dashboard, it indicates one of four possible issues: general fault, automatic transmission fault, abnormal tire pressure, or lighting fault. Below is a detailed analysis of these four scenarios: General Fault: A triangle with an exclamation mark inside. If this symbol lights up, it indicates a fault in the car's general performance, components, or functions. Common causes include parking sensor failure, fuel cutoff system intervention or malfunction, external light failure, or engine oil pressure sensor failure. It is necessary to visit a 4S shop for inspection to identify the source of the fault. Automatic Transmission Fault: A yellow gear with an exclamation mark inside. This is the automatic transmission fault warning light, indicating a problem with the transmission or that the transmission fluid level is below the normal range. The transmission fluid should be replaced promptly. Abnormal Tire Pressure: A horizontal line under a parenthesis with an exclamation mark in the middle. This represents the tire pressure monitoring warning light, which illuminates when the tire pressure is too low. Check the tire pressure and restore it to the normal range. Lighting Fault: A yellow bulb with an exclamation mark. This is the lighting fault indicator, signaling that a car light has malfunctioned. Solution: Visit a 4S shop as soon as possible for inspection and repair, or conduct a self-check focusing on commonly used bulbs such as turn signals, fog lights, and interior lights to identify the issue. There is also a red exclamation mark inside a circle with parentheses. This represents a warning for the braking system, primarily indicating a fault in the braking system or low brake fluid level. The braking system should be inspected immediately to avoid accidents.