Why is the BMW Z4 center control screen not lighting up?
1 Answers
If it happens occasionally, it is normal because when starting the car, the electricity is momentarily used for ignition, resulting in lower voltage. If the screen fails to light up multiple times during startup, you should check whether the power supply to the display screen is normal. If the power supply is abnormal, replace the power supply module. Then, check whether the ribbon cable connection is good. If there is a problem, replace the ribbon cable. If everything is normal, it may be that the display screen is damaged. Here are the specific details: 1. Restart the ignition: If the center control screen goes black and does not light up, you can first restart the ignition to reboot the screen. If the problem persists, it is likely due to poor line contact. You need to promptly check whether the lines have loose connections. If so, it will naturally cause the center control screen not to light up. In this case, simply reconnect the loose parts properly. 2. Aging signal line: It could also be due to aging of the power signal line. You can try replacing it with a new one. If the black screen issue is resolved, it confirms that the power signal line was indeed the problem. If the center control screen remains black after checking the above two scenarios, it is likely due to prolonged use of the screen, causing the power supply module to malfunction, leading not only to lag but also severe black screen issues.
