2024-2026 Hyundai Bluelink Connectivity Loss TSB 26-01-035H

Hyundai has released Technical Service Bulletin (TSB) 26-01-035H, identified as Service Campaign 9C0, to address concerns regarding the Data Communication Unit (DCU) and Bluelink functionality in certain 2024-2026 models. This bulletin supersedes previous TSB 25-01-018H.

This service campaign aims to resolve issues where vehicles may experience a Hyundai Bluelink connectivity loss or interruptions in Bluelink functions. The problem is attributed to potential disconnections on Verizon's communication network, affecting the DCU.

Important Warnings for Owners and Dealers

• Dealers are required to perform this service campaign on all affected vehicles before customer retail delivery and whenever an affected vehicle is brought in for any maintenance or repair.
• Any affected IONIQ vehicles must have repairs performed at IONIQ certified dealers to prevent potential damage.
• When performing the 'Reset Network' step, technicians will NOT see any confirmation on the screen. The module resets in the background without showing status.
• If the DCU does NOT reset and Bluelink does NOT show activated after the procedure, technicians must contact Techline for further assistance.

Symptoms of Hyundai Bluelink Connectivity Loss

Owners may notice the following issues with their Bluelink services:

• Loss of connectivity: The Bluelink system may not be able to establish a connection.
• Interruptions in Bluelink functions: Services may cut out or fail to operate correctly during use.

These symptoms are often linked to an occasional disconnection from Verizon's communication network, impacting the vehicle's Data Communication Unit (DCU).

Diagnosis and Trigger Conditions

To diagnose the issue, technicians will verify the Bluelink DCU network connection. This involves accessing the vehicle's infotainment system to check the Bluelink activation status. If the system displays messages like "Service subscription is required. Please press the Activate button, or contact a customer service representative. Bluelink: 855-2-BLUELINK/855-225-8354", or if Bluelink does not activate successfully, a DCU reset is required.

Repair Procedure Summary

The repair procedure outlined in TSB 26-01-035H involves two main phases: initial verification and, if necessary, resetting the DCU in Dealer Mode.

Initial Verification of Connection

1. The technician turns on the vehicle's ignition.
2. They navigate through the infotainment system to select 'Setup', then 'Bluelink'.
3. The system will prompt to 'Activate' or 'Reconfigure' Bluelink.
4. After attempting activation, the technician checks for the message "Bluelink has been activated". If this message appears, the initial verification is complete, and the issue is resolved (warranty Op. Code 50D052R0).

Resetting the DCU Network

If Bluelink does not activate successfully, the technician proceeds to reset the DCU:

1. The ignition is turned on.
2. The technician selects 'Setup', then 'General' from the infotainment screen.
3. A specific sequence of volume adjustments and screen taps in radio FM mode is performed to access a hidden menu.
4. The password 2400 is entered to access 'Dealer Mode'. This password applies to all models.
5. Within Dealer Mode, 'Connected Car Service' is selected.
6. The 'Reset Network' option is chosen. The system will reset the module in the background without visual confirmation.
7. The technician exits Dealer Mode and returns to the main menu.

Verification of Connection After Resetting DCU

After resetting the DCU, the technician repeats the initial verification steps to ensure Bluelink activates successfully. If the message "Bluelink has been activated" appears, the repair is complete (warranty Op. Code 50D052R1).

Warranty Information

This service campaign is covered under warranty. The following codes are used for claims:

• Operation Codes:
  • 50D052R0: Initial Verification of Connection (0.2 M/H)
  • 50D052R1: Resetting the DCU Network in Dealer Mode & Verification of Connection After Resetting DCU (0.3 M/H)
• Causal Part: NTF00-00000
• Nature Code: M73
• Cause Code: ZZ3

If any other part is found to require replacement during this campaign and is still under warranty, a separate claim should be submitted. For out-of-warranty parts, a Prior Approval request for goodwill consideration is necessary.

Owner Action

If you are experiencing a Hyundai Bluelink connectivity loss or interruptions in Bluelink functions in your 2024-2026 Hyundai vehicle, you should contact your authorized Hyundai dealer. Inform them about Technical Service Bulletin 26-01-035H (Service Campaign 9C0) and the symptoms you are experiencing. The dealer will perform the necessary inspection and DCU reset to restore your Bluelink services.

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Source: NHTSA ID 11031315