The following are possible reasons why your car's infotainment display might not light up:
1. The battery cables were disconnected at the factory and reconnected upon delivery. Check if the cables are loose.
2. Check if the fuse is blown.
3. Check if the ribbon cables are loose.
4. Check if the backlight bulb is burnt out. Bulbs typically require 12V power.
5. If the bulb is not burnt out, check if the power supply chip for the LCD bulb on the mainboard is faulty.
Solutions for a car infotainment display that is dark and unresponsive to touch:
1. If the DVD player is lagging and the display is dark and unresponsive, restart the screen's power supply.
2. Incompatible third-party software. Check if any new software has been recently downloaded. System crashes may be caused by unstable programs or insufficient memory. In this case, you may need to delete some memory and uninstall related software.
3. If it's a hardware problem, you'll need to take your car to a 4S dealership for maintenance or a repair shop for inspection. 4. Check if the display malfunction is caused by an outdated or outdated software version. If so, upgrade the software. 5. Finally, if all methods fail, you'll need to have your car inspected and the navigation system replaced.
