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What are the reasons why the BYD Song USB port cannot recognize the USB flash drive?

2 Answers

VanGabrielle

07/24/25 3:03am

The BYD Song USB port may not recognize the USB flash drive due to a loose connection at the USB port. Once the port is loose, the USB may fail to recognize the device, or the USB flash drive itself may be damaged. First, check if the USB flash drive is faulty. If it is not faulty, plug it into a computer to check the format of the USB flash drive and reformat it to NTFS format. If it still cannot be read, the car's USB port may be faulty and requires repair at a professional auto repair shop. Precautions for using the car USB port: Do not unplug the USB flash drive while it is reading, writing, or saving data to avoid damaging the USB flash drive and the port. The USB flash drive also requires driver loading during use. If the USB flash drive or phone is occasionally not recognized, try reconnecting it by unplugging and plugging it back in. If the USB flash drive is not used for a long time, unplug it promptly to prevent accelerated aging of the USB flash drive. Additionally, the host system frequently reads and writes to the USB flash drive, which may affect the host's operating speed. When the vehicle is on a bumpy road, vibrations may cause an unstable USB connection, leading to disconnection. Please wait patiently for the system to reconnect or try reconnecting the USB flash drive or phone by unplugging and plugging it back in.

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DelKendra

08/10/25 10:39pm

Last time I drove my BYD Song, I also ran into the issue of the USB not recognizing the flash drive, which was really frustrating. It might be due to the wrong format—BYD systems prefer FAT32, while formats like exFAT or NTFS simply won’t read. A flash drive with too large a capacity can also cause problems; anything over 32GB tends to act up, so try switching to a smaller 16GB one. Dust buildup in the port can block contact—cleaning it with an alcohol-dipped cotton swab often helps. System software bugs are common too; restarting the infotainment system or visiting a 4S shop for a firmware update might fix it. Don’t overlook issues with the flash drive itself—format and check it on a computer, and if the file system is corrupted, just replace it with a new one. Always use high-quality branded flash drives and avoid filling them up too much to prevent mid-drive failures that could affect driving safety. If all else fails, get a professional to check the circuit to avoid wasting time on guesswork.

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