1. Faulty Display Unit:
- The issue might be with the display unit itself. Check the connections between the display unit and the rest of the audio system. Make sure they are secure and not damaged.
2. Fuse Issues:
- Check the fuse box for blown fuses related to the radio. A blown fuse can disrupt power supply to the radio's display. Replace any blown fuses with the correct amperage.
3. Software Glitch:
- Occasionally, software glitches can affect the display functionality. Try resetting the radio by disconnecting the battery for a few minutes and then reconnecting it. This may resolve the issue.
4. Wiring Issues:
- There might be a problem with the wiring connecting the radio to the display. Inspect the wiring harness for loose connections, damage, or corrosion.
5. Internal Circuit Board Problem:
- There might be a fault within the radio's internal circuit board that affects the display. If the display is not working after trying the above solutions, the problem might require professional repair or replacement of the radio unit.
6. Settings Issue:
- Check if the brightness settings on your radio are turned down too low. Adjust the brightness level and see if the display appears.
7. Faulty Head Unit:
- If all the above solutions fail, the issue might be with the head unit itself. Consider contacting a professional auto electrician or an authorized Suzuki dealer to diagnose and repair the problem.