Ducati Multistrada 2200S Pikes Peak Owner's Manual page 136

The key contains a battery that must be replaced
when the message "low level" is displayed under the
key and battery symbols when the instrument panel
is turned on.
Note
In this case, replace the battery as soon as
possible.
When the charge level goes below a certain limit, the
key can only work in passive mode, like the passive
key: in this case, the instrument panel will not display
any message.
Fig 70
133