What Causes ETC Electronic Tag Failure?
2 Answers
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.
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.
