Lexus 2004 GX470 Owner's Manual page 259

AUDIO
To scan all the frequencies: Push the "SCAN" button briefly.
"SCAN" appears on the display. The radio will find the next
station up the band, stay there for a few seconds, and then
scan again. To select a station, push the "SCAN" button a
second time.
To scan the preset stations: Push the "SCAN" button until
you hear a beep. "SCAN" appears on the display. The radio
will tune in the next preset station up the band, stay there for
a few seconds, and then move to the next preset station. To
select a station, push the "SCAN" button a second time.
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(d) RDS (Radio Data System)
When you push the "RDS" button briefly during FM reception,
the RDS turns on. "RDS" and "RDS SEARCH" appear on the
display and the radio starts to search RDS stations.
If no RDS stations can be found, "NO RDS ST" appears and
the display returns to the previous mode.
If RDS stations are found, "FOUND" and the number of the
RDS stations appear on the display in the FM TYPE mode and
the RDS stations are preset by program type.
To turn off the RDS, push the "RDS" button until you hear a
beep.
Finish