1. Open the central control screen of the vehicle or vehicle system.
2. Look for the setup menu or system information options.
3. In the setting menu, look for options related to the QR code, such as "car networking", "car QR code" and "device pairing".
4. After entering the corresponding options, you should be able to find the QR code of the car.
Please note that different models and systems may have different interfaces, so the above steps are for reference only. If you still can't find the QR code of the vehicle, I suggest you consult the user manual of the vehicle or consult the automobile manufacturer or dealer for specific operation guidance.