Hidden menu (test mode) in RCD 310 Volkswagen radio will help you with diagnosing FM tuner issues. Check antennas status, audio quality, signal strength and RDS status.
RCD 310 can be found in modern Volkswagen cars like:
Golf MK6
Jetta MK6
Passat B7
Caddy II lift
Touran lift
Tiguan
Polo MK5
Transporter/Multivan/Caravelle T5
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Music by Dan-O at DanoSongs.com
