Check/control monitors major functions (doors, boot lid), lights (dipped beam, rear and brake lights, for example) and the Tyre Defect Indicator (TDI) and displays their current condition or any deviation from target figures.
Light functions are even monitored and displayed when the lights themselves are switched off.
This information is shown in the Head-Up Display and in the display on the instrument panel and is further supported by sound signals, which vary depending on the level of priority.