2024-2025 Hyundai Bluelink Connectivity Issue TSB

Hyundai has released Technical Service Bulletin (TSB) 25-BE-003H to address instances of lost connectivity or interruptions in Bluelink functions across several 2024-2025 models. This Hyundai Bluelink connectivity issue is often attributed to temporary disconnections from Verizon's communication network.

The TSB outlines a specific procedure for technicians to reset the Connected Car Data Communication Unit (DCU) in Dealer Mode, aiming to restore stable Bluelink functionality. This ensures owners can rely on their vehicle's connected services without interruption.

Symptoms

Owners may experience the following symptoms related to the Hyundai Bluelink connectivity issue:

• Loss of connectivity for Bluelink services.
• Interruptions in the middle of using various Bluelink functions.

These issues are typically due to an occasional disconnection on Verizon's communication network, impacting the vehicle's modem.

Important Warnings

Hyundai has issued specific advisories regarding this service bulletin:

• "Any affected IONIQ vehicles must have repairs performed at IONIQ certified dealers to avoid any potential damage."
• When performing the network reset, technicians are advised that they "will NOT see any confirmation. The module will reset in the background and will not show any status on the screen."

Repair Procedure Summary

The repair, identified by Operation Code BLUERES1, involves resetting the DCU Network in Dealer Mode. This procedure is performed by a certified Hyundai technician and takes approximately 0.3 hours. The causal part associated with this operation is NTF00-00000, with Nature Code M73 and Cause Code ZZ3.

The technician will perform the following general steps:

1. Ignition On: Turn the vehicle's ignition to the ON position.
2. Access Setup Menu: Navigate through the infotainment system to select the "Setup" menu, then proceed to "General."
3. Enter Dealer Mode: Access a hidden menu by performing a specific sequence of volume adjustments and screen taps with the radio in FM mode. Once prompted, enter "2400" as the password to enter Dealer Mode.
4. Reset Network: Within Dealer Mode, select "Connected Car Service" and then choose "Reset Network." The system will reset the modem in the background without displaying a confirmation message.
5. Exit Dealer Mode: Return to the main menu by selecting the Home icon.
6. Activate Bluelink: Go back to the "Setup" menu, select "Bluelink," and then choose "Activate" or "Reconfigure" to re-establish Bluelink services. A loading screen will appear during this process.
7. Verify Activation: Confirm successful Bluelink activation by selecting "OK" when prompted.

This comprehensive reset procedure, as detailed in TSB 25-BE-003H, aims to fully resolve the Hyundai Bluelink connectivity issue.

Owner Action

If you are experiencing a loss of connectivity or interruptions with your Bluelink functions in your 2024-2025 Hyundai model, it is recommended to schedule an appointment with an authorized Hyundai or IONIQ certified dealer. They have the necessary tools and procedures to perform the DCU (Modem) Network and Bluelink Reset as outlined in TSB 25-BE-003H. This repair is typically covered under normal warranty.

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Source: NHTSA ID: 11014444