Turn the knurled ring to 
.
The warning light 
on the instrument
cluster will come on.
See also:
Headlight slant adjusting device
The car is fitted with electric headlight slant adjusting device working with
ignition key to MAR and dipped beams on.
When the car is loaded, it slopes backwards. This means that the headlight b ...
Installation of electric/electronic devices
Electric/electronic devices installed after buying the car or in aftermarket
shall bear the and marking:
Fiat Auto S.p.A. authorizes the installation of transceivers provided that installation
...
Start&Stop system and Gear Shift Indicator
With respect for the environment and fuel economy still in mind, the new
model implements a system called Start&Stop. Standard on all engines, this
device temporarily stops the engine and rest ...