
When entering the toll station, the ETC system fails to detect the information of the ETC card, thus prompting "No electronic tag" and refusing to lift the barrier for passage. After the OBU is installed and activated, it cannot be removed. Once it is removed or becomes loose, the stored information inside will be lost, resulting in "tag invalidity".

Once when I was driving through an ETC lane, the screen suddenly displayed 'No Tag Vehicle,' which really startled me. This situation is usually caused by issues with the ETC tag, such as a dead battery or improper installation. I suggest you first pull over safely with hazard lights on, then try reactivating the tag by removing and reinserting it firmly. If that doesn’t work, check your account balance via the mobile app to see if it’s insufficient or if the tag has expired. On the highway, don’t take risks—just use the manual lane and pay in cash to avoid complications. Afterward, remember to contact ETC customer service or visit a service center to replace the tag. Make it a habit to check the tag’s indicator light monthly to catch issues early—it saves a lot of hassle.

As a young driver who frequently hits the road, I've experienced the embarrassing situation where my ETC displays 'no tag detected'. The main reasons could be a loose or obstructed tag, or perhaps a drained battery. My first instinct was to pull over and check if the tag was securely attached – sometimes just adjusting its position solves the issue; if there's no response, try charging it via USB cable to see if it revives. On highways, don't panic – just use the manual lane, safety comes first. After returning home, log into the ETC official website or app to update your information. If the tag appears aged, head to a service point for replacement immediately. By the way, rainy weather or overly thick window tinting might also interfere with signals – next time you apply tint, avoid the tag area and keep it clean and unobstructed.

Speaking from personal experience, when there's no tag display at the ETC, the issue often lies with the tag itself. First, check if it's loose or has a low battery, and try reattaching it. Then verify if the account has any outstanding payments. If passage is still impossible, turn on the hazard lights, pull over, and switch to a manual lane for payment. If the problem persists, contact customer service for inspection. Remember, the tag has a lifespan of about 5 years, and regular signal testing can prevent such issues from affecting your trip.


