
ETC can be removed by the following methods: 1. Use a hairdryer to blow hot air at the joint between the OBU device and the windshield, then slowly twist the OBU device off by hand; 2. Soak a towel in hot water and place it on the outside of the windshield to heat the adhesive tape behind the OBU device, then remove the device. ETC is an electronic toll collection system. Its working principle is: through dedicated short-range communication between the vehicle-mounted electronic tag installed on the vehicle's windshield and the microwave antenna on the ETC lane at the toll station, the system uses computer networking technology to perform background settlement processing with the bank, achieving the purpose of vehicles passing through highway or bridge toll stations without stopping to pay tolls.

I remember last time helping a friend remove an ETC device, and found the key lies in dealing with the adhesive. The ETC base is stuck to the windshield with industrial double-sided tape, which can't be pulled off by brute force. It's recommended to spray automotive adhesive remover along the edges and wait three to five minutes for the adhesive to soften. Then, use an old card or similar hard plastic piece to slowly pry it off—patience is crucial. I've seen people rush the process with a razor blade, only to scratch the windshield with several marks, resulting in repair costs higher than the ETC itself. After removal, residual adhesive will remain on the glass. Apply some essential balm, then wipe in circular motions with a damp cloth. Finally, dry the glass with newspaper to leave no trace.

When removing an ETC device, pay special attention to its internal anti-tamper mechanism. Most units have a small spring-loaded button at the bottom that automatically locks the device when detached from the windshield. If removal is necessary, first prepare strong transparent adhesive tape to securely fasten the entire unit and immobilize the spring plate before detachment. Last week when assisting my neighbor with this, I wore gloves throughout the process for better handling. A pro tip for adhesive removal: use a hair dryer on hot setting for two minutes to soften the glue, then twist the base left and right until you hear a click for complete removal. For residual adhesive, repeated rubbing with an eraser works best and is safer than chemical solvents.

From a professional perspective, ETC removal involves two steps: physical detachment and account cancellation. For physical removal, avoid the black dotted area around the rearview mirror as that's the antenna location. When removing adhesive, using fishing line or floss to slide and cut between the base and glass is the safest method. More importantly, handle the account properly: call your ETC service provider in advance to notify them. Some bank-issued devices freeze automatically upon detachment, but highway ETC accounts require active cancellation to prevent information risks. I recommend cleaning the device's card slot with alcohol pads after removal, especially if planning to resell it. For windshield residue removal, nail polish remover works surprisingly well—just remember to ventilate by opening windows.

Having personally disassembled three cars, the three most important things are: protecting the glass, avoiding triggering device lockouts, and preventing information leaks. Nowadays, the adhesive on new devices has been improved—just apply a hot towel for ten minutes to peel it off completely. However, older devices require extra attention to spring-triggered mechanisms—it's recommended to insert a piece of cardboard into the base gap to secure the mechanism before disassembly. For cleaning residue on rearview glass, here's a handy life hack: apply cooking oil and let it sit for half an hour, then gently scrape it clean with an old membership card. Lastly, remember to deregister the license plate—many overlook this step, which could affect future re-registration processes.

Removing an ETC device may seem trivial but involves multiple details. First, identify the device type: those with solar panels on top can be removed directly, while units with power cables require removing the A-pillar trim to unplug them. Using fishing wire with a sawing motion is most efficient for cutting through adhesive. The most challenging are devices installed for 5-6 years with oxidized, hardened adhesive. In such cases, professional automotive adhesive remover should be applied in three stages with 20-minute intervals. Improper post-removal glass treatment may leave a frosted appearance - cover with a damp cloth overnight before cleaning. Crucially, don't lose the metal gasket removed; it's essential for vibration damping during reinstallation.


