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 temperatureRemoval of the tail light
Disconnect the connectors (a) and (b) of the tail lights (1) and (13).
Loosen the screws (4) and slide the tail lights (1) and (13) to the rear side;
recover the four spacers (3) and the washers
(14).
...
Turn indicators not working
Fault codes
Dds: no fault code displayed.
Dashboard: no fault code displayed.
Wiring diagram
Db dashboard connection, bbs bbs unit connection, s turn indicator button, f1
front left turn indicator, f2 front right
turn indicator, f3 rear left turn indicator, f4 rear right turn indicator. ...
Instrument panel on tank
Menu 1 (tot, trip1, trip2, trip fuel).
Menu 2 (cons.Avg., Cons., Speed avg, air and
trip time) if active.
Gear / neutral indication.
Icon referred to the function below from menu 1.
Indication of engine setting for the currently set riding
style.
Currently set riding style (riding m ...