1.There is something wrong with the USB flash drive itself, or the USB flash drive has bad blocks and some files are damaged. Insert the USB flash drive into the computer to test whether it can be played. If the songs in the USB flash drive can be played normally on the computer, the format of the song file should be wrong. The car can only read MP3 format song files, preferably 128KB, and others are not supported. Solution: Download songs in the correct format again, or use the format conversion tool to change the format. . Some music formats can't be recognized by car players, but generally MP3 and WAV formats can be recognized.

2. Cars do not support large-capacity USB flash drives. Some old models don't support large-capacity USB flash drives, such as 2G USB flash drives, but none of them support 16G or 32G. Solution: Try to replace the small-capacity USB flash drive.