Reasons why the car USB flash drive can't play suddenly:

1. The USB flash drive is loose: As the USB flash drive is plugged into the USB interface of the vehicle for a long time, it is likely to become loose with the vibration and shaking of the car body when the vehicle is driving. If the USB flash drive and USB interface are loose, it will probably cause music to suddenly fail to play.

2. Damage to the U disk: Although the possibility of damage to the U disk is very small, the possibility of damage cannot be ruled out because the environment inside the car is not ideal (especially at high temperature in summer).

3. file damage: music file damage may also suddenly cause music on the USB flash drive to suddenly stop playing.

4. Format: Since most vehicles can only recognize music files in MP3 and WMA formats, you must pay special attention to the file format when downloading. If you find that the format is wrong, you should convert it in time.

5. Path: The storage path of the music file must not be too deep, otherwise the vehicle will not find the music file, so it should be stored in the root directory of the U disk as far as possible.

Extended materials:

You can use the audio transcoding function of QQ music to change songs in other formats into mp3 formats. Please refer to the following for specific operations. Tools/materials: computer qq music.

1. click to open QQ music.

2. Click on the menu bar.

3. click audio transcoding.

4. Click Add Song.

5. Select a song and click Open.

3. select mp3 format.

7. finally, click to start the conversion.