Which button is car Bluetooth?

The letter CBP of the Bluetooth button, not all vehicles have Bluetooth buttons, and the Bluetooth function of some vehicles is switched by the information switching button, which switches cyclically among the vehicle Bluetooth system, cd system, radio system and Usb system, and is not limited to a single button. Car Bluetooth system is a wireless Bluetooth hands-free system based on wireless Bluetooth technology. Its main function is to make hands-free calls through mobile phone Bluetooth and on-board Bluetooth during the normal driving of vehicles, which can free the hands of motor vehicles and drivers and reduce the hidden dangers of traffic accidents. After the car Bluetooth is connected to the mobile phone once, the car will automatically connect after restarting.