It indicates the car speed.
See also:
Electronic Vehicle Information Center (EVIC)Setup Menu
The menu comprises a series of functions arranged in a cycle. Press the + and
– buttons to access the different options and settings (setup).
The setup menu can be activated by pressing the MENU ES ...
Climatic comfort
Knob (D) directs the air inside the passenger compartment according to five levels:
air flow from central vents and
side outlets;
to warm the feet and keep the face
cool (“bilevel” function)
...