Ducati MULTISTRADA 1260S Owner's Manual page 237

Note
In case of Battery-Off, upon the following
Battery-On / Key-On, the Dashboard sets this function
by default to "OFF".
Note
This means that if heated handgrips are enabled
and engine stops, the heating is "temporarily"
disabled but the ON indication is still active. Heating
will automatically turn on when engine is started
again.
Note
In order to preserve battery charge, when
engine is idling (below 2,000 RPM), heated handgrips
heating corresponds to "LOW" level even if actually
set to "MED" or "HIGH". As soon as engine rpm
increase (>2,000 RPM) heating will correspond to the
actual setting ("MED" or "HIGH").
236
Note
Handgrip heating requires a high current draw
which, at low engine rpm, might result in the battery
getting soon flat. If the battery is not fully charged
(voltage below 13.2 V) handgrip heating is disabled to
ensure engine start-up ability; it will automatically
activate again when battery voltage is above the
specified value.
Note
If there is an error in the heated handgrips and
the air temperature sensor is in fault, button (12) will
not work and the instrument panel will turn on the
"Generic Error" warning light, and turn off the heated
handgrip warning light.
Note
In case of heated handgrip fault, the instrument
panel turns on the "Generic Error" light only.