Subaru Forester 2016 Owner's Manual page 301

The message HD Channel is unavailable appears in the following situations.
Caution Contents
.
This caution message appears
when the digital reception is not
possible.
.
Audio/Radio operation
Conditions when caution
Case
.
When the system When the status is changed
determined that the SPS to acquiring digital data
station could not be re- because the reception
ceived while receiving a condition of SPS station
digital broadcast and SPS has improved.
.
station.
When the received station is
When the SPS broadcast changed.
is ended (stopped) by the
radio station while receiv-
ing SPS.
5-35
disappears
CONTINUED