Why is the car's central control screen not lighting up?
3 Answers
Here are the reasons why the car's central control screen is not lighting up: 1. Display power supply: First, check whether the power supply to the display is normal. If the power supply is abnormal, replace the power supply module. 2. Cable connection: Then check whether the cable connection is good. If there is a problem, it will naturally cause the central control screen to go black. At this time, just reconnect the loose part properly. 3. Display damage: Check whether the display is damaged. Replace the display for testing. If it returns to normal, the display is damaged. If the problem persists, with normal power supply and good cable connection, check the video output signal of the motherboard and replace the motherboard for testing.
I ran into the same issue a couple of days ago—the screen went black and showed nothing, which was really frustrating. Start by checking the simplest things, like whether the screen's power plug is loose. Last time, mine was due to a poor connection. Also, take a look at the fuses. Find the fuse box under the steering wheel, pull out the fuse corresponding to the infotainment system, and see if it's blown. If restarting the car doesn’t help, the system might have crashed. Try holding down the volume knob to reboot the system. My neighbor’s car had a short circuit after installing an aftermarket navigation system—the screen suddenly died and even fried the main circuit board, costing a fortune to replace. Modified cars are the most prone to this kind of issue, often due to messy wiring. If all else fails, take it to a shop to scan for trouble codes. Whatever you do, don’t start tearing apart the dashboard yourself and make things worse.
If the central control screen suddenly goes black, a step-by-step troubleshooting approach is needed. The first step is to check the vehicle's power supply to see if the ignition switch is powered on and whether the battery terminals are oxidized or loose. Next, inspect whether the rear wiring harness has come loose—you can access the wire connectors by removing the glove compartment yourself. If physical connection issues are ruled out, it's likely that the infotainment system has crashed. I've encountered system crashes twice before; turning off the engine for ten minutes and restarting it fixed the issue. For some car models, it's also important to check for faults in the light sensor, as the screen might mistakenly detect excessive light and automatically turn off. Last week, my cousin's car had this exact problem—water got into the sensor during car washing, causing a false strong light detection. Only after these possibilities are eliminated should you consider the chance of a damaged main unit. Listening for static noise from the speakers can help determine if the audio chip is damaged. The order of troubleshooting is crucial—start with the simplest and move to the more complex to avoid unnecessary expenses.
