1. Fault light is on: If the vehicle has a fault, the fault light may be on the dashboard. These fault lights include brake system fault lights, engine fault lights, steering system fault lights and so on. When these fault lights are on, a small purple light will be displayed on the dashboard.
2. Sensor failure: The sensor of Mercedes-Benz c200l may fail, such as water temperature sensor and air flow sensor. These sensors are responsible for monitoring the state and performance of the vehicle. If it fails, a small purple light will be displayed on the dashboard.
3. Sensor signal line failure: The sensor signal line is the connecting line between the sensor and the vehicle ecu. If it fails, a small purple light will be displayed on the dashboard.
4. Power failure: If the power of the instrument panel fails, a small purple light will be displayed on the instrument panel.