
There is an anti-tamper switch button on the back of the ETC device. After installation, this anti-tamper button presses against the windshield. There are two common types of ETC devices. This type of device has Bluetooth functionality, allowing customers to log into the APP or related program used during ETC application for self-activation.

Replacing the ETC after windshield replacement is actually quite simple—I’ve done it myself once. First, be careful when removing the old ETC; don’t pull it off forcefully. Use a hairdryer to heat and soften the adhesive before gently peeling it off. After installing the new windshield, thoroughly clean the mounting area to ensure no dust or residual glue remains, so the new adhesive can bond securely. When reattaching the ETC, try to place it back in the original position, as the angle must align properly with the toll station’s scanning device for it to work. If the original adhesive has weakened, replace it with new adhesive—specialized ETC adhesive strips can be bought on Taobao for just a few yuan. After installation, contact your ETC service provider (e.g., Alipay ETC or your bank’s ETC app), as you may need to reactivate the device in the software. Finally, test it by driving through a toll lane to confirm automatic deduction works. The whole process takes less than half an hour, but be careful not to scratch the inner side of the windshield during installation. If your device is outdated, consider upgrading to the latest model while replacing the windshield—it’s more hassle-free.

As a technician who frequently works at 4S shops, I recommend not delaying ETC handling after windshield replacement. Removing the ETC is a critical step—use a heat gun to soften the adhesive before detaching the device to avoid damaging wires by forceful pulling. After installing the new windshield, wait a few days for the adhesive to dry before proceeding. Clean the installation area with alcohol to ensure it's free of grease. When remounting the device, choose the upper right corner or center of the windshield, avoiding wiper blind spots. Use strong double-sided tape for adhesion, avoiding cheap options that may fail. For ETCs with built-in batteries, check if the charge is sufficient. Most devices will automatically activate after reinstallation, but occasionally may require app-based signal reactivation. Test the pass-through function the same day, and contact customer service if signal issues arise. The process isn't overly complex—key is patient, meticulous operation to avoid rework.

As a new car driver, I had a smooth experience handling the ETC after replacing the windshield last time. Before removing the device, I checked the tutorial – just use a hairdryer to heat the adhesive for easy removal. After cleaning the new windshield thoroughly, I simply stuck it back in place. If the adhesive isn’t strong enough, just replace it with new adhesive. Once installed, I reactivated it with a few taps in the app. My ETC is linked to WeChat, so it was quick and easy. Finally, I tested it by driving through a toll booth. The whole process isn’t difficult—the key is to stay calm.


