Enter the settings of the car system, there is a restore, there are three options to choose from, see which restore you need, this is not difficult.
Furthermore, cached music is played by default when you turn on the phone, so it remembers your playback address. You can get in the car and change the playback address to a radio or a USB flash drive, etc., and it will not be cached when you start it up next time. Instead, listen to whatever you want, as long as you