What are the reasons why the car USB cannot charge?
2 Answers
Charging is only possible when the car engine is started. If the USB cannot charge, it may be due to a mismatch between the current power of the USB car charger and the required current power of the matched device. Relevant information about the car Bluetooth is as follows: Function: After the Bluetooth function is successfully matched, you can use your mobile phone to play audio files, answer calls, which is very convenient. While driving, it ensures driving safety. After the car system and Bluetooth system are connected, you can directly make calls on the car system in a hands-free manner. Automatic connection: Once the mobile phone and car system are connected, they will automatically connect the next time you use them, provided that the mobile phone's Bluetooth system is turned on. There is no need for frequent connections, which saves time and brings convenience to the use of motor vehicles. However, when using Bluetooth calls, you need to pay attention to privacy.
I often encounter this issue while driving. A few days ago, the USB port in my car suddenly stopped charging. After checking, I found that the USB port might have accumulated dust or oxidized, leading to poor contact. Additionally, a blown fuse is a common cause; you can locate the corresponding USB fuse in the vehicle's fuse box and replace it if it's blown. Short circuits in the cable or loose connections can also interrupt charging, especially when using cheap charging cables. I recommend regularly cleaning the port, checking the fuse, and avoiding frequent plugging and unplugging to extend its lifespan. If the problem persists, it's best to visit a 4S shop to check if there's a fault in the vehicle's power supply system, such as an aging battery affecting charging efficiency. Don't forget routine maintenance to prevent many minor issues.
