What does the ETC warning light in Audi mean?

1 Answers
AuroraMarie
07/23/25 9:09pm
The illumination of the ETC light on the dashboard of an Audi vehicle indicates a fault in the car's electronic system. It is generally necessary to focus on checking whether the sensors in various parts of the car are functioning properly. A diagnostic tool can be used to detect the fault code, which is usually caused by components such as the throttle, spark plug, or exhaust valve. Timely replacement of the faulty parts is recommended. The ETC installation process is as follows: Upon receiving the device, first inspect the ETC card and the electronic tag (OBU) for any damage. Press the anti-tamper button on the back of the OBU, and the red light will briefly illuminate. The OLED screen will display "Tag Invalid, Insert Card," indicating that the device is functioning normally. 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 and adhere it to the installation position. Press firmly for 2-3 minutes to remove any air bubbles. Insert the ETC card with the front side facing the driver and the back side facing the windshield, ensuring the chip is inserted into the OBU device. Benefits of installing ETC: Time-saving: Eliminates the hassle of waiting in queues; Green and eco-friendly: Promotes low-carbon travel by allowing 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 tear, and improving fuel efficiency. Users can also enjoy a 5% discount on toll fees; Improved efficiency: The theoretical efficiency of ETC lanes can increase by 2-3 times, making traditional ETC faster, more advanced, and more high-tech. Compared to license plate payment, ETC technology is more mature and advantageous.
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