Other information:
When the ring is at the "AUTO" position and a low level of ambient light is
detected by the rain/sunshine sensor, the number plate lamps, sidelamps and
dipped beam headlamps are switched on automatically, without any action on the
part of the driver...
This system automatically checks the pressures of the tyres while driving.
It compares the information given by the wheel speed sensors with
reference values, which must be reinitialised every time the tyre pressures are
adjusted or a wheel changed...