Volvo V70R - Manual (Page 213)

212
Audio (option)
Radio functions HU-450/650/850
Radio text
Some RDS stations broadcast information,
such as about programme content and
artists.
Hold the FM button depressed a few
seconds to access any transmitted radio text,
which then appears in the display. After the
text is shown twice, the radio once again
displays the station/frequency. A brief press
on EXIT ends the radio text display.