Why does the ETC keep falling off?
2 Answers
It is possible that the owner's car has been parked in a place exposed to sunlight for a long time, causing the adhesive tape to lose its stickiness, resulting in the ETC device falling off. Here are some precautions for installing ETC: 1. Installation height: Pay attention to the installation height, which should not be lower than 1.2 meters or higher than 2.5 meters. 2. Installation angle: The installation angle N should be between 30° and 90°, which is the angle between the surface of the electronic tag and the horizontal plane. 3. Avoid obstruction: When installing, avoid the black areas on the windshield and do not install it in a position that blocks the solar battery. 4. Do not remove it casually after installation: Do not remove it casually after installation to avoid the ETC becoming invalid after removal.
As someone who frequently modifies car audio systems, I often encounter issues with ETC devices not sticking properly and falling off, mainly due to adhesive quality and installation techniques. The windshield surface may have oil, dust, or dirt, which prevents the adhesive from bonding firmly when applied directly. Additionally, the adhesive itself may age or be too thin, causing it to loosen with temperature fluctuations from cold to heat. I remember last time when I replaced the device, I had to thoroughly clean the glass with alcohol, then peel off the protective film and press firmly for over 30 seconds to ensure the adhesive bonded properly. In summer, high temperatures can soften the adhesive, causing it to slide, while in winter, cold contraction can make it brittle and prone to falling off. I recommend choosing new adhesive patches with strong backing or regularly checking the device. Keep some specialized cleaning cloths and small tools in the car so you can quickly reinstall it if it falls off, avoiding trouble on the highway.