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In this case, I recommend you to use MiniTool Partition Wizard. Through the two tools, you can format a USB drive to NTFS file, a drive less than 32GB to FAT32 file system, and a drive larger than 32GB to exFAT file, but these tools can't format a drive larger than 32GB to FAT32.
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Then, click OK button to start reformatting process. Choose a proper file system and keep other parameters as default.Right-click on the USB flash drive partition and click.Open Disk Management by pressing " Windows + R" keys at the same time, entering " msc" in the Run box, and then hitting Enter key.Here is the tutorial on formatting USB flash drive for car stereo via Disk Management:
#How to reformat a usb drive to fat32 Pc
Your car stereo may support FAT32, exFAT, and NTFS file system.
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In this situation, you need a tool to format exFAT 64GB drive to FAT32 file system. The car stereo only support FAT32 file system, while your USB flash drive is 64GB or larger.The car stereo doesn't read the USB flash drive.You may need to format USB flash drive for car stereo due to the following reasons: Read More Formatting USB Flash Drive for Car Stereo
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