What are the reasons for the ETC screen not lighting up?

[SanTheo]

etc screen not lighting up is due to: 1. Abnormal power supply to the display screen; 2. Poor contact of the wiring harness; 3. Damage to the display screen; 4. Abnormal video output signal from the motherboard. ETC is an electronic toll collection system, also known as an automatic road toll system, specifically designed for toll roads. It is commonly used on highways, bridges or tunnels with toll policies, and certain sections of urban roads to alleviate traffic congestion. The method to check ETC records is: 1. Open the search bar in a mobile device and enter the local ETC official account name; 2. Enter the official account, click to add more accounts, then click to bind the user account; 3. Fill in the user name and ID number information, then click to bind the ETC card account, entering the ETC card number and license plate number; 4. After successfully binding the account, return to the homepage and click on 'My Services' to query the monthly bill to check the records.

[McKai]

That day my ETC suddenly went black, it was so frustrating! Actually, it's mostly due to a dead battery. This thing relies on solar charging, so if you park underground for long periods it's prone to losing power. If you have metal film on your windshield, that can also affect charging. Last time I took it off and charged it for two hours using a power bank connected to the charging port, and it worked fine. By the way, you should also check if the device has been deformed by sun exposure. High summer temperatures can cause the casing to warp and lead to poor contact. If the red light doesn't even turn on when you press the button after charging, you'll probably need to get a new device at a service center.

[DelZoey]

Having repaired ETC devices for ten years, let me tell you, a non-lit screen generally boils down to five scenarios: the solar panel is covered with dust and can't charge, the device was tampered with triggering anti-theft lock (there's a tamper-proof switch at the bottom), dashcam interference, unsuccessful activation by the bank, or simply the device has reached its lifespan. Last year, while diagnosing for a regular customer, I found his newly installed armored film contained metal components that completely blocked the signal—peeling off a corner of the film fixed it. Now, with newer Bluetooth-enabled devices, extra caution is needed against smartphone interference.

[DaisyRose]

My car's ETC screen hadn't lit up for three years, but I recently fixed it myself! Turns out this device has an ultra-long standby time, but leaving it in the glove box for too long completely drained the battery. Remember to let the device get some sunlight, and if the windshield is dirty, clean the solar panel. If pressing the side button doesn't even make the red light flash, use a SIM ejector tool to reset it via the small pinhole - similar to resetting a router. I've seen people use magnets on the charging port pretending to charge it - don't laugh, it actually works! If the screen is cracked or water-damaged, just replace it - repairs cost more than buying a new one.

[ZaneDella]

New ETC device not lighting up? Don't panic, the card might not be inserted properly! The metal chip of the bank card should face the front of the vehicle and be inserted all the way until you hear a beep. My wife made this mistake when she changed cars last time. A red light indicates insufficient balance, while green means normal. Before hitting the highway, it's best to check the device status using the ETC Assistant APP, which now also supports remote top-up. By the way, moving the device will cause deactivation - keep it stuck on the windshield and don't tamper with it. If removed, you'll need to visit the bank for reactivation.

[VanLandon]

Just dealt with an ETC black screen issue last month. Found that the black ceramic dot area on the windshield is the proper spot to mount the device – many people install it in the wrong position, leading to weak signals. During inspection, shine a flashlight into the screen gap; if you see a faint flicker, the device isn’t broken, just clean the solar panel. If the device is completely dead, don’t throw it away—check if the connector shows signs of oxidation (whitening). The worst-case scenario is lightning strikes or high-pressure car wash sprays, which usually render it irreparable. Bring your ID card to get a replacement. Always check the device status before hitting the road—getting stuck at a highway exit is embarrassing.