The activation of this (amber yellow) "warning" indicates that the hands free system has detected that the battery that permits the active key (1, fig. 62) To communicate and turn the vehicle on is almost discharged.
Note
In this case, ducati recommends replacing the battery as soon as possible as described in the paragraph "replacing the active key battery" (page 88).

Hands free key (hf) not recognised
High engine coolant temperatureCommunication antenna
Introduction
The communication antenna enables the hands free system to detect and
communicate with the active or passive key.
The active key is detectable within a range of 1.5 Metres, whereas the passive
key (or active key with flat battery) can
only be detected if placed in contact with ...
Units of measurement modification function
This function allows you to change the units of measurement
of the displayed values.
To access the function it is necessary to view the "setting" menu page 48, using
button (1, fig. 14) ?"" or (2, fig.
14) ?" " select the "set units" function
and pre ...
Rh switch
Red on/off switch.
Black engine start button.
The switch (1) has three positions:
Centre: run off. In this position, the engine cannot be
started and all electronic devices are off.
Pushed down: on/off. In this position, the system can
be turned on (key-on) and off (key-off).
Pus ...