Hyundai Santa Fe (TM): Body Electrical System / Head Up Display System

Hyundai Santa Fe (TM) 2019-2023 Service and Repair Manual / Body Electrical System / Head Up Display System

Description and operation

Description
1.
System operation

HUD system displays various information on the windshield glass which minimizes the driver’s eye movement to enhance safety and convenience.
The Head Up Display reflects the TFT LCD images to two mirrors (flat/concave) and displays them 2.2m ahead from the driver's eye.
Information provided by HUD ;
(1)
Vehicle speed
(2)
Integrated (DIS) information TBT (Turn by Turn) navigation information, road signage
(3)
Safety warning lamp: SCC, LKAS, LFW, Blind Spot Warning
2.
HUD Display Contents
3.
HUD Unit
Head Up Display : Information of the vehicle system is output to the combine through CAN communication.
4.
Cluster
5.
Ambient Light Sensor
Ambient light sensor: The two-direction (horizontal, vertical) measuring sensor is applied and the HUD brightness is adjusted by the horizontal measurements.
–
Two-direction measuring ambient light sensor applied

  
If the ambient light sensor measurement is not recognized, the HUD does not work. Make sure that the sensor should work before checking the HUD.

Components and components location

Components Location

1. Head Up Display (HUD)
2. Rain(Light) sensor
 3. Cluster (User setting menu On/Off)

Head Up Display Unit. Components and components location

Component

Head Up Display Unit. Troubleshooting

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

Head Up Display Unit. Repair procedures

Removal
1.
Disconnect the negative (-) battery terminal.
2.
Remove the instrument cluster.
(Refer to Indicators And Guages - "Instrument Cluster")
3.
Remove the head up display unit (A) after disconneting the connector (B) and loosening the mounting screws.
Installation
1.
Install the head up display unit.
2.
Install the instrument cluster.
3.
Connect the negative (-) battery terminal.
Inspection
If a part of the headup display footage is distorted or it is not at eye level with the driver a Global Diagnostic System (diagnostic tool) can be used to carry out calibration.
1.
In case calibration is required
–
When replacing the head-up display unit.
–
In case the footage is distorted after replacing the windshield (double vision removed after film is inner mounted to the glass).
–
When the HUD mounted main crashpad is removed/installed or replaced.
–
When the video installation location of the Head-up display unit is not at eye level of the driver and the focus is inconsistent.
2.
calibration items
No
Footage calibration functions
Calibration cases
1
 Rotation : Calibration in the half-circle/clockwise direction based on the center

2
 Smile : Calibration based vertically on the center

3
 Slanted(up/down) : Calibration according to an upward/downward slant

4
 Slanted(left/right) : Calibration according to a left/right slant

5
 Parallel compensation

6
 Move location of mark to upward/downward : Compensation according to eye height

7
 Initialization : Changed to the status of before video compensation

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