What Causes a Car to Have No Network Connection?
2 Answers
It is common for cars to experience network disconnections, where the infotainment system or other electronic devices cannot connect. The reasons for this include poor signal reception in the vehicle's location, exhausted data plan for the onboard network, or malfunctioning onboard network equipment. Poor signal reception in the vehicle's location: Typically in remote rural areas or places with complex electromagnetic interference, the onboard network signal is weaker compared to other mobile internet devices. Therefore, network disconnection due to poor signal is a common issue. The best solution is to move to an area with stronger signal reception. Exhausted data plan for the onboard network: The onboard network also requires a data plan, and without it, there will be no network connection. Currently, many manufacturers do not provide lifetime free internet services, so car owners need to purchase data plans themselves. If the network disconnection is due to an exhausted data plan, the solution is to recharge the data. Malfunctioning onboard network equipment: If the car's power supply system provides a working voltage below 10.5V, some electronic control modules (ECMs) with high voltage requirements may experience temporary operational failures, causing the entire onboard network transmission system to lose communication temporarily. In this case, it is necessary to check if any power cable has poor contact. If the issue is due to faulty communication chips or integrated circuits, a visit to a 4S shop for repair is required.
Last time I was on a long drive, the internet in my car suddenly cut out, and it turned out to be due to poor signal coverage in the mountainous area—completely no network. A car's internet typically relies on the onboard antenna to receive cellular signals, just like a mobile phone. If you drive into remote areas or underground parking lots, the signal can become very weak or even disappear. Additionally, severe weather such as thunderstorms or heavy snow can also interfere with the connection. It's recommended to check the car's signal display bars or restart the system—sometimes, the connection will restore once you drive out of the dead zone. There could also be hardware issues, like a loose antenna or a damaged module, which would require a visit to the repair shop. Many new cars now support 5G, but 3G still dominates in urban fringe areas, making connections prone to instability. When driving, focusing on the road is more important—don't keep staring at the screen for internet connectivity.
