What are the reasons for ETC tag failure?
3 Answers
ETC tag failure is caused by the user's unauthorized removal or movement of the OBU device, or due to the loosening or detachment of the ETC electronic tag. User's unauthorized removal or movement of the OBU device: When receiving a new ETC device, if the ETC anti-tamper switch on the back is pressed and the red light briefly turns on, the OLED display will show "ETC tag invalid," indicating that the ETC electronic tag is not activated. This is a normal phenomenon. If the ETC failure is due to this reason, you can visit the bank branch where the ETC service was processed or the highway service office to apply for a reset. ETC electronic tag loosening or detachment: This can occur if there was no protective linkage during installation. You can bring your ID card, driver's license, and the electronic tag to a customer service center to apply for a replacement. How ETC works: The ETC (Electronic Toll Collection) system is currently the most advanced toll collection method for roads and bridges worldwide. It uses microwave-based dedicated short-range communication between the onboard electronic tag installed on the vehicle's windshield and the microwave antenna in the ETC lane at the toll station. This, combined with computer networking technology for backend bank settlement processing, allows vehicles to pass through toll stations without stopping to pay toll fees.
Oh, I've encountered the issue of ETC tag failure several times before, and it's quite annoying. The main reason is usually that the battery is dead, as the built-in lithium battery typically lasts only three to five years before running out, at which point the toll booth can't detect it. The installation position is also crucial—I stick mine on the upper part of the windshield, away from the wipers, to avoid dust or film blocking the signal. The tag itself might be damaged, such as cracking from a fall or short-circuiting due to water exposure, especially if rain splashes in when the window is open, making failure more likely. Account issues can also occasionally occur, like when the linked bank card expires or has insufficient balance, leading to deactivation. It's recommended to test the functionality regularly and remember to sync information when replacing the tag, which makes driving much smoother.
There are many reasons for ETC tag failure. Starting with the battery, its lifespan is limited. Price tags generally need to be replaced after about three years, or they will stop responding entirely. Next is physical damage, such as surface cracks or being crushed by heavy objects, which can break the internal circuits. Improper installation is a common mistake—the tag must be placed on the windshield without metal obstructions, or signal reception will be poor. On the electronic side, hardware aging or manufacturing defects can cause issues, such as moisture damage or overheating. External factors like strong magnetic interference, such as placing a phone nearby, can disrupt the signal. System upgrades are another factor; if toll stations update their systems, older tags may become incompatible and be automatically deactivated. If the tag fails, first check the indicator light—a flashing red light indicates a problem. Prompt maintenance or visiting a service center for repairs should resolve the issue.
