2021-2023 Hyundai AVN Radio Crash & Uneven Road Warning

Hyundai has released Technical Service Bulletin (TSB) 24-BE-001H-1 to address a software issue affecting the Audio Video Navigation (AVN) 5th Generation Wide system in various 2021-2023 models. This bulletin provides a procedure for updating the AVN software to resolve instances of the radio application crashing and the display of an "Uneven Road Ahead, Drive carefully" warning message. If you are experiencing a Hyundai AVN radio crash or this specific warning, this TSB outlines the necessary steps for resolution.

This TSB has been revised to exclude the Venue (QX) model, which will be covered in a separate, dedicated TSB.

Symptoms

Owners of affected vehicles may observe the following conditions:

• The radio application frequently crashes when attempting to enter radio mode.
• A message reading "Uneven Road Ahead, Drive carefully" appears on the instrument cluster, often accompanied by an audible warning sound.

Diagnosis

To determine if your vehicle requires this update, a technician will check the currently installed AVN software version. If the software version is one of the following, an update is necessary:

• 221011
• 221025
• 221115
• 221220
• 221228

The target updated software version should be 230203 or greater.

Repair Procedure Summary

The repair involves updating the AVN software using a USB drive. The general steps are as follows:

1. Turn the vehicle's ignition switch to the 'ON' position.
2. Access the AVN system's 'Setup' menu, then navigate to 'General'.
3. Verify the current software version to confirm the need for an update.
4. Insert the prepared USB drive containing the software update into the vehicle's USB port.
5. On the AVN screen, select 'Update', then confirm by selecting 'OK', and finally 'Start' to begin the update process.
6. After the update is complete, confirm that the software version has been successfully updated to 230203 or a newer version.

If a pre-loaded USB drive is not available, the software can be downloaded from https://update.hyundai.com onto a blank 64GB USB drive. This process involves selecting the vehicle model, downloading the update file, and then transferring it to the USB drive.

Required Tools or Parts

Technicians will use specific USB drives pre-loaded with the software update:

• RADIOSWUPDATEA: For Elantra, Elantra Hybrid, IONIQ 5, Kona (OS), Palisade (20-22MY), Sonata, Sonata Hybrid, and Veloster N.
• RADIOSWUPDATEB: For Kona N, Kona EV, Palisade (23MY & later), and Tucson.

Alternatively, a blank 64GB USB drive can be used to download the software directly from Hyundai's update portal.

Important Warnings for Owners and Technicians

• IONIQ 5 Servicing: "If servicing an IONIQ 5 (NE1) vehicle, it can only be performed at IONIQ certified Hyundai dealerships."
• Battery and Power: Ensure the vehicle's battery is sufficiently charged and the power is switched to 'ON' throughout the update to prevent battery drain.
• USB Drive Removal: "Do NOT remove the USB drive, or turn OFF the ignition switch during the update. This will prevent the update from completing." Removing the USB device or turning off power during the update may cause data loss or system failure.
• Genuine Parts: Verify that the AVN system is a genuine Hyundai part (not aftermarket) before proceeding with the update.
• USB Drive Formatting: If using a previously used USB drive for downloading the software, be aware that formatting the drive will delete all its prior content.

Owner Action

If your Hyundai vehicle is experiencing a Hyundai AVN radio crash or displaying the "Uneven Road Ahead, Drive carefully" warning, it is recommended to schedule an appointment with an authorized Hyundai dealership. The software update described in TSB 24-BE-001H-1 is typically covered under the vehicle's normal warranty. The dealership will perform the necessary software update to resolve the issue.

Source: NHTSA ID 11006111