What Causes ETC Electronic Tag Failure?

[LeCassidy]

ETC electronic tag failure occurs due to the switch being triggered twice consecutively or the adhesive backing becoming loose. Below are detailed explanations of the causes: Switch Triggered Twice Consecutively: ETC tags are vehicle-specific and have a protective interlock during installation. There is a push-button switch on the side that adheres to the car's windshield. If this switch is pressed twice in a row, it will cause the ETC electronic tag to fail. Adhesive Backing Becoming Loose: If the failure is caused by the adhesive backing becoming loose, the device can be reactivated. If it still doesn't work properly, take the device to the bank where the ETC was issued or to a highway service center for reset.

[ElijahAnn]

I've been driving on highways quite a lot in recent years and frequently use the ETC tag, occasionally encountering malfunctions. The most common issue is the small battery inside the tag running out of power. That battery can last several years, but over time it can't hold up and needs replacement. The last time, mine lasted about three years before failing, and replacing it was quick. Additionally, if the tag is bumped or dropped, the internal circuitry can get damaged—for instance, if it's accidentally knocked off during car washing or deteriorates from prolonged exposure to high temperatures. Installation position also matters; if the windshield has a metal film or dirt buildup, the signal gets blocked, and the toll station can't read the data. I recommend checking if the tag's light is blinking before each trip. If it fails, first visit an ETC service point for inspection instead of rushing to replace the car. Clean it regularly during maintenance to reduce unexpected issues. Overall, prevention is simpler than repair.

[ElliottDella]

My ETC tag suddenly stopped working recently, which is quite annoying. Here are some lessons I've learned. First, battery depletion is the most common issue. The electronic components inside the tag consume more power over time, with a normal lifespan of about two to three years, so regular replacement is necessary. Second, physical damage, such as hitting the shell while moving goods or internal short circuits due to expansion under high temperatures. Third, improper installation—I initially placed it too close to the metal frame, causing signal interference and failure to be recognized at toll booths. To check, start the vehicle and observe the tag's indicator light; if there's no response, there's a serious problem. I recommend avoiding rough contact with the tag or having a 4S store assist with installation. Safety first—if it fails, use cash for payment and don't rush through.

[StPreston]

I know there are several main reasons for ETC tag failure: battery failure is the primary one, as the built-in lithium battery can degrade; tag damage, such as from severe vibration or water exposure affecting performance; signal interference, where obstacles in the installation location disrupt signals. The solution is simple: test the tag's light, replace it if necessary, or adjust its position; avoid complex environments and keep it clean. For long-term use, regular checks are recommended.