See also:

ABS intervention
It is signalled by the blinking of the warning light á on the instrument panel, to inform the driver that the car is in critical stability and grip conditions. ...

Speedometer (speed indicator)
It indicates the car speed. ...

For checking and restoring pressure only
The compressor can be also used just for restoring pressure. Disconnect the quick connection and connect it directly to the tyre valve; in this way the cylinder is not connected to compressor and ...