What's the matter if the car display screen doesn't display?
3 Answers
If the car display screen doesn't display, first check the wiring at the port to see if it's due to vehicle vibration during driving that caused the wiring port to loosen and fall off. Basic introduction: Under the mask of modern car dashboards, various indicator lights or warning lights are made. For example, coolant level warning light, fuel level indicator, washer fluid level indicator, charging indicator, high-low beam indicator, transmission gear indicator, anti-lock braking system (ABS) indicator, traction control indicator, airbag (SRS) warning light, etc. Classification: Conventional gauges in general cars include speedometer, tachometer, oil pressure gauge, water temperature gauge, fuel gauge, charging gauge, etc.
I've been driving for over a decade and encountered several instances where the display suddenly went dark, which is actually quite common. The most frequent cause is a blown fuse, located in the fuse box under the steering wheel—simply find the relevant fuse and replace it with a new one to fix the issue. Secondly, the display's connecting wires can easily become loose, especially after driving on bumpy roads, causing the connectors to come undone; just plug them back in securely. Software bugs are also quite common, such as errors during system updates. Stopping the car, restarting the engine, or disconnecting the negative battery terminal for a few minutes might resolve it. Overheating can also trigger the screen's thermal protection, causing it to shut down. If this happens while driving, don't take risks—immediately turn on your hazard lights, pull over, and check the issue. Safety first; if the problem persists after inspection, head to a repair shop. I've handled minor issues like these a few times myself—low cost but saves a lot of hassle.
When working in the auto repair field, if the display screen isn't functioning, you need to troubleshoot step by step. Start with the power source—blown fuses are often the culprit, so locate and inspect the corresponding fuse in the box and replace it if necessary. If the power is fine, check for loose or oxidized connector plugs. On the software side, system freezes are common; rebooting the system or connecting a diagnostic tool to refresh the codes might solve the issue. If these steps don't work, the display module might be faulty and require replacement. More complex cases involve short circuits in the wiring—use a multimeter to measure voltage and identify the break point. If the screen goes black while driving, pull over immediately to inspect, as signal light failure could be a risk. Regular maintenance, like cleaning contact points, can prevent issues. The job isn't difficult but requires patience. For complex cases, it's best to send the vehicle to a professional shop for thorough diagnostics to ensure everything is in order.
