Honda ADV350A 2021 Owner's Manual page 128

Unlock the Ignition Switch in an Emergency
ID number input failure
After the last ID number is input, the ignition
switch ring and the Honda SMART Key
indicator flash at 1 second intervals, and then
go off.
The ignition switch does not unlock.
Redo the "Unlock the Ignition Switch in an
Emergency" procedure.
124
P. 122
2
ID number input cancel
If you make a mistake while inputting your ID,
press and hold the ignition switch for 2
seconds or do not press the ignition switch,
just wait for the ignition switch ring and the
Honda SMART Key indicator to turn off.
Redo the "Unlock the Ignition Switch in an
Emergency" procedure. P. 122
2