Why does the ETC device prompt 'Label Removed'?
2 Answers
ETC displays 'Label Invalid' due to unauthorized removal or relocation of the OBU device, or detachment/loosening of the ETC electronic tag. It 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-removal button on the back of the OBU; a red light will briefly turn on, and the OLED screen will display 'Label Invalid' or 'Please Insert Card,' indicating the device is functioning normally. Clean the front windshield to ensure the surface is smooth, clean, and dry. Then peel off the adhesive backing of the OBU and stick it to the installation position. Press firmly for 2-3 minutes to remove any air bubbles. Insert the ETC card with the front facing the driver and the back facing the windshield, ensuring the chip is inserted into the OBU device. ETC activation method: Insert and remove the ETC card twice consecutively until the electronic tag screen displays 'Bluetooth On.' If 'Label Invalid' appears when inserting/removing twice without the electronic tag attached, this is normal and does not affect activation. Alternatively, press the button on top of the electronic tag to enable Bluetooth. Turn on your phone's Bluetooth and open the corresponding mobile app (usually with a download QR code on the electronic tag), then enter the device activation interface. Click 'Device Connection' and wait patiently for the 'Connection Successful' prompt. After successful connection, upload a photo of the vehicle's front to complete activation.
That day when I was driving home, my ETC device suddenly beeped and displayed a 'tag detached' warning, which gave me a scare. I pulled over to check and found that the double-sided tape on the back of the device had loosened. The vibrations from driving on bumpy roads had triggered the alert. This feature is designed by ETC to prevent theft—if the device is removed or shifted without authorization, it will sound an alarm and can even be remotely disabled to prevent unauthorized use of your card. Last time I washed my car, I accidentally sprayed water on it, which might have also caused the sensor to misjudge. I recommend using the manufacturer-provided adhesive or clips to securely install the device on the windshield's clean zone without obstructing the view. Regularly wipe the device surface with a cloth to prevent dust buildup that could lead to loosening. I’ve experienced similar issues several times before, but since I started checking it every six months, the problems have reduced. It’s truly an annoying little thing while driving, but simple maintenance can easily fix it.
