FixVault

Head Up Display Unit: Troubleshooting

Category Error Symptoms Inspection Item Detailed Inspection Item Related Parts
Lighting
  • HUD not working
  • Lighting brightness not automatically controlled (no difference between day and night)
  • Check the lighting control
  • Check the ambient light sensor operation
  • Check the CAN communication
  • Check the lighting control in the cluster USM

    → If working, HUD has no problem.

  • Check the ambient light sensor operation

→ If the ambient light sensor works, check the communications (CGW ↔ HUD)
Light sensor CGW
Cluster
Adjustment function
  • Display position not adjusted
  • Check the mirror movement when IG is on or off (parking position)
  • If the step motor does not work when IG is on or off, → The step motor in HUD fails.
  • If the step motor in HUD works when IG is on or off, → Check the CAN communications (cluster ↔ HUD)
HUD
Cluster