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Home >> Hyundai >> 2021 >> Santa Fe Calligraphy, AWD >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Head Up Display System (Except HEV) >> Head Up Display Unit >> Troubleshooting

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