How to Troubleshoot the Auto High-Beam (High-Beam Support System)
Auto High-Beam Indicator (Green)
When the Auto High-Beam is OK, the Auto High-Beam indicates its operation on the gauge control module as below.

NOTE:
For Auto High-Beam function, review the Auto High-Beam Description.
The Auto High-Beam communication with other control units via F-CAN. For Auto High-Beam diagram, review the Auto High-Beam Diagram. If a connected unit malfunctions, the Auto High-Beam will not operate. In this case, both Auto High-Beam indicator and connected unit indicator come on and stay on (except for the gauge control module).
Self-Diagnostic Function
The Auto High-Beam has a self-diagnostic function. If a malfunction of the Auto High-Beam detects a problem while in operation, a warning message is displayed on the multi-information display (MID), the Auto High-Beam stops operating, and stores DTCs.

NOTE: The Auto High-Beam operates while maintaining a mutual connection between the multipurpose camera unit at the control origin and the other control units (relay control module, body control unit, gauge control module, automatic lighting/rain sensor, etc.). If malfunctions occur in these control unit systems, the Auto High-Beam does not operate. At this time, warning indicator of the related control unit turn on and a warning message is displayed on the multi-information display (MID).

Dirt or dust detective function (CLEAN FRONT WINDSHIELD Indication)
If the message appears on the MID, the camera lens or the windshield has enough dirt so that the camera view is obstructed. The Auto High-Beam stops operating.

Clean any dirt or contamination on the camera lens or the windshield. Once the camera's view is unobstructed, the MID turns off and the Auto High-Beam automatically turns back to ON.

Multipurpose Camera unit
The Auto High-Beam of this vehicle is controlled by the multipurpose camera unit. If an error or malfunction of the multipurpose camera unit occurs, the Auto High-Beam does not operate. At this time, a warning message is displayed on the multi-information display (MID). The operations of the Auto High-Beam corresponding to the multipurpose camera unit malfunctions can be checked in the DTC troubleshooting index.

The multipurpose camera unit also has an error detection function which sends a signal to the millimeter wave radar if an error is detected. The millimeter wave radar receives this information from the multipurpose camera unit.
System Protect Function (High temperature) (MULTIPURPOSE CAMERA HOT Indication)
If the message Some Driver Assist Systems Cannot Operate: Camera Temperature Too High appears on the MID, the Auto High-Beam stops operating, and stores a DTC.

When the multipurpose camera temperature cools down to its proper operating temperature, the indicator on the MID turns off, and the Auto High-Beam automatically resumes operation.

Multipurpose Camera Aiming Function
If the multipurpose camera unit is removed or replaced, you must do the multipurpose camera aiming procedure. If the aiming is incomplete, the Auto High-Beam indicator blinks.
CAN communication
The Auto High-Beam communicates with other control units via F-CAN. For Auto High-Beam diagram, review the Auto High-Beam Diagram.

If the multipurpose camera unit detects a communication error or a malfunction in another connected unit, the Auto High-Beam will not operate even though it is OK. In this case, both the Auto High-Beam indicator and the related unit indicator will come on and stay on.
Intermittent Failures
The term ''intermittent failure'' means a system may have had a failure, but it checks OK now. If you cannot reproduce the condition, check for intermittent failure DTCs. If intermittent failure DTCs are not stored, check for loose connections and terminals. Also check ground and power connections related to the circuit that you are troubleshooting.
How to Troubleshoot DTCs
Check the DTCs with the HDS.

NOTE: For Auto High-Beam DTCs, refer to the DTC troubleshooting index.

Before troubleshooting, check and note these items:
Ask the customer about the conditions when the problem occurred, and try to reproduce the same conditions for troubleshooting.
If the symptom does not appear and the Auto High-Beam indicator does not come on while test-driving, but your troubleshooting was based on the DTC, check for poor connections or loose terminals at all connectors related to the circuit that you are troubleshooting.
After the troubleshooting or repairs are done, clear the DTCs, and test-drive the vehicle under the same conditions as when the DTC was originally set. Make sure the Auto High-Beam warning message does not come on.
The Auto High-Beam sometimes stops operating because of the environment (weather, road conditions, driving conditions, etc.). Intermittent failure DTCs may be stored in these cases.
How to Retrieve DTCs
NOTE:
Make sure the 12 volt battery is fully charged before you begin.
The Auto High-Beam of this vehicle is controlled by the multipurpose camera unit. For this reason, the Auto High-Beam may not operate normally depending on the malfunction status of the multipurpose camera unit. The operations of the Auto High-Beam related to the multipurpose camera unit malfunctions can be checked in the troubleshooting list by DTC for the millimeter wave radar.

1.

2.
Use the HDS to check for Integrated Driver Support System for DTCs.

3.
Read and record the DTC:

4.
Turn the vehicle to the OFF (LOCK) mode.

5.
Disconnect the HDS.

6.
Do the troubleshooting procedure for the DTC.
How to Clear DTCs
NOTE: Make sure the 12 volt battery is fully charged before you begin.

1.

2.
In the DRIVING SUPPORT MENU of the HDS, select Integrated Driver Support System, then choose the clear DTCs icon, and follow the prompts.

3.
Turn the vehicle to the OFF (LOCK) mode.

4.
Disconnect the HDS.