Kia Optima: Head Up Display System / Head Up Display (HUD) Unit

Kia Optima DL3 2019-2024 Service and Repair Manual / Body Electrical System / Head Up Display System / Head Up Display (HUD) Unit

Schematic diagrams
Connector and Terminal Function

Repair procedures

Use a plastic panel removal tool to remove interior trim pieces without marring the surface.

Take care not to bend or scratch the trim and panels.


Remove the cluster assembly.

(Refer to Indicators And Gauges - "Instrument Cluster")


Remove the head up display upper cover (A) by using a screwdriver or remover.


Disconnect the head up display unit connector (A).


Remove the head up display unit (A) by loosening the mounting screws.


Install in the reverse order of removal.


If a part of the head up display image is distorted or it is not at eye level with the driver, the diagnostic system (KDS) can be used to carry out calibration.


Calibration is required:

After replacing the head-up display unit

When the image is distorted after replacing the windshield (double vision removal film built-in glass)

When the HUD mounted main crash pad is removed/installed or replaced.

When the image setting location of the HUD unit is not at eye level of the driver resulting in out of focus image.


Calibration items

Image calibration functions
Calibration cases
Can calibrate clockwise/counter clockwise to center image

Smile: Calibrate vertically to center.

Slanted (up/down): Calibrate along a vertical inclination.

Slanted (left/right): Calibrate along a horizontal inclination.

Parallel compensation

Up/down movement of indicated location: Calibrate to driver's level.

Initialization: Return to previous status before calibration.


Calibration procedure


Park the vehicle on a flat plane for accurate adjustment.


Make sure that there are no foreign materials on the windshield.


Connect the KDS to the vehicle, and select vehicle type and HUD system additional functions.


Under additional functions select 'HUD calibration'.


Before 'calibration', perform 'HUD calibration - initialization'.


'HUD calibration - initialization' must be performed prior to 'calibration'.


Select the necessary calibration items and perform 'HUD calibration'.


When calibration is completed, start and cut off the engine and check that the image calibration is completed.

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