It indicates the car speed.
See also:
EPS system operation
The ESP system is automatically inserted when the car is started and cannot be
de-activated. ...
Number plate light
To change the bulb, proceed as follows:
❒ release the tab (A) and remove the cluster;
❒ turn the bulb holder (B) anticlockwise and remove the bulb (C). ...
10. Cruise Indicator — If Equip
This indicator shows that the Speed Control system is on. ...