The activation of this (amber yellow) "warning" indicates that the status of the battery vehicle is low.
It is activated when the battery voltage is ¼ 11.0 Volt.
Note
In this case, ducati recommends charging the battery as soon as possible with the specific device, as it is possible that the vehicle will not start.

Warning indication (alarms/signals)
Traction control (dtc) deactivatedStands
Side stand
Side stand switch
Screw
Plate
Screw
Inner spring
Outer spring
Nut
Rotation pivot
Screw
Screw
Screw
Nut
Clearance adjuster
Spare parts catalogue
Diavel abs stand
Diavel carbon
abs
stand
Important
Bold reference numbers in this section identify part ...
Adjusting the steering head bearings
Note
To adjust the steering bearing clearance, follow what is described in
sect. 4 - 3, Adjusting the steering head bearings.
If the problems found are not solved, check the wear of steering bearings (6)
and replace them, if necessary, as described
in paragraph "removal of the steering head c ...
Removal 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).
...