I don't know if the answer to this question is car-specific, but I have both a 2013 GS and a 2014 RX. I will be copying some playlists on to a USB flash drive for use in these vehicles. Is there a maximum number of files that Lexus's audio system will see or is it limitless?

 

For the GS it's a maximum of 255 files per folder. You can have 3000 folders, though, and 9999 files total on a USB stick (all folders combined).

 

Exactly the information I was looking for. Thanks!