Honda CRF1100A 2021 Owner's Manual page 346

Audio System Trouble
Symptom
When turning the ignition
switch to (Off) and (On)
continuously.
High temperature/
overcurrent protection
Software update
If the problem continues after the above-described inspection, have your vehicle inspected by
your dealer.
340
Since the system restart takes time, it may take time until the
screen is appears.
To protect the system, some operations may be limited
temporarily. The system automatically recovers after the cause is
solved.
The statements in this owner's manual may not match your
vehicle's Audio System after performing the software update.
Cause/remedy