ETC displaying 'label detached' indicates that the device is currently unavailable and needs to be reinstalled and reactivated at the original processing point or any highway ETC service center. The ETC installation process is as follows: Upon receiving the device, first check if the ETC card and electronic tag (OBU) are damaged. Press the anti-tamper button on the back of the OBU. A red light will briefly illuminate, and the OLED screen will display 'Tag Invalid' or 'Please Insert Card,' indicating the device is functioning normally. Clean the windshield, ensuring the surface is smooth, clean, and dry. Then, peel off the adhesive backing of the OBU and attach it to the installation location. Press firmly for 2-3 minutes to remove any air bubbles. Insert the ETC card with the front side facing the driver and the back side facing the windshield. The chip should be inserted into the OBU device. ETC activation method: Insert and remove the ETC card twice in succession until the electronic tag screen displays 'Bluetooth On.' If 'Tag Invalid' appears when inserting and removing the card twice without the electronic tag attached, this is normal and does not affect activation. Alternatively, press the button on the top of the electronic tag to enable Bluetooth. Turn on your phone's Bluetooth and open the corresponding mobile app (usually a download QR code is provided on the electronic tag). Navigate to the device activation interface. Click 'Device Connection' and wait patiently for the 'Connection Successful' prompt. Once connected, upload a photo of the vehicle's front to complete activation.
