Can I install ETC three or four days after applying the front windshield film?

[Matteo]

You cannot install ETC three or four days after applying the front windshield film. It is recommended to wait for one month before installing ETC because the film on the front windshield generally takes about a month to fully dry. If the ETC is installed before the film is completely dry, it may cause partial detachment of the film from the glass. The ETC installation process is as follows: Upon receiving the device, first check if the ETC card and electronic tag (OBU) are damaged. Press the anti-tamper button on the back of the OBU. The red light will briefly turn on, and the OLED screen will display "Tag Invalid, Please Insert Card," indicating the device is functioning properly. Clean the front windshield to ensure the surface is smooth, clean, and dry. Then, peel off the protective film on the back of the OBU adhesive and attach it to the installation position. Press firmly with your hand for 2-3 minutes to remove any air bubbles. Insert the ETC card with the front facing the driver and the back facing the windshield. The chip should be inserted into the OBU device. Benefits of installing ETC: Time-saving: Eliminates the hassle of waiting in line; Green and eco-friendly: Low-carbon solution that allows vehicles to pass through toll stations without stopping, reducing noise and exhaust emissions and minimizing pollution; Cost-saving: Reduces expenses by decreasing the frequency of vehicle starts and stops, lowering wear and fuel consumption. Users can also enjoy a 5% discount on toll fees; Improved efficiency: ETC lanes can theoretically increase vehicle throughput by 2-3 times, making traditional ETC systems more updated, faster, and more high-tech. Compared to license plate payment, ETC technology is more mature and advantageous.