How to tell if the ETC display is normal?
2 Answers
ETC display showing "Debit Card" or displaying "Amount" is normal. If the ETC card is inserted into the electronic tag but shows messages like "Electronic Tag Invalid" or "No Card Inserted", it indicates an abnormality with the ETC electronic tag, requiring reactivation and reinstallation at an ETC service outlet. If the ETC screen malfunctions or doesn't respond when pressing the top button, it may be out of power and should be taken to the bank where the ETC card was issued or a highway service office for inspection. Unauthorized removal or movement of the OBU device, or if the ETC electronic tag falls off or becomes loose, can also cause the electronic tag to fail, displaying "Tag Invalid" on the screen. In such cases, it should be taken to an ETC bank outlet or highway service office for handling. If the damage is not caused intentionally, reactivation is usually sufficient.
In my daily driving, checking if the ETC is functioning properly is straightforward: when passing through the toll station, a small green light on the device will stay steadily lit and emit a 'beep' sound, indicating successful detection and fee deduction. If the light doesn't turn on or there's no sound, it might mean the battery is dead, the card is loose, or the device is obstructed. I regularly check the device's battery life—typically needing replacement after one or two years of use—and place it in the upper right corner of the windshield to avoid direct sunlight and high-temperature damage. In newer car models, such as smart SUVs, the ETC status might be integrated into the dashboard, displaying a green light icon directly. For maintenance, I remove and reinsert the card monthly to ensure good contact, preventing delays on the road. Signal reception is usually smooth in good weather, but occasional misreads can happen in rain or fog. Under normal conditions, the detection is 100% reliable, but don’t forget to periodically calibrate it at a service center.
