2022 Hyundai Tucson Inoperative Horn TSB 26-BE-004H

Hyundai has released Technical Service Bulletin (TSB) 26-BE-004H to address an issue with the horn assembly in certain 2022 Hyundai Tucson (NX4A) vehicles. This bulletin details the procedure for replacing an inoperative horn, which may occur due to foreign substances causing internal parts to oxidize.

To support owners, Hyundai is extending the warranty coverage for the horn replacement. This extended coverage is valid for 10 years or 120,000 miles, whichever comes first, from the vehicle's original retail delivery date or date of first use. This applies to both original and subsequent owners.

Symptoms of an Inoperative Horn

Owners of affected 2022 Hyundai Tucson vehicles may notice that their horn is not working at all, or it may sound weak or inconsistent. The primary symptom is an "inoperative horn," meaning it fails to function as intended when activated.

Diagnosis and Trigger Conditions

The root cause identified for the Hyundai Tucson inoperative horn is the oxidation of internal horn components. This oxidation is often triggered by the ingress of foreign substances into the horn assembly. If your horn is not working, a dealership technician will diagnose the issue to confirm it aligns with this condition.

Important Warnings and What Owners Should Know

Hyundai is extending the warranty for this specific issue. Any 2022 Hyundai Tucson vehicle under 10 years or 120,000 miles is covered by this TSB, even if it falls outside the original 5-year/60,000-mile new vehicle warranty period. The repair should be submitted as a campaign claim type.

It is important to note that the incident parts replaced under this TSB are subject to a callback process through the Warranty Technical Center (WTC). Claims may be debited if the removed parts are not returned. If other parts not covered by this TSB require replacement during the repair and are still under warranty, a separate claim can be submitted. For out-of-warranty parts, retailers may submit a Prior Approval (PA) Request for goodwill consideration on a case-by-case basis.

Repair Procedure Summary

The repair procedure outlined in TSB 26-BE-004H involves replacing both the high-pitch and low-pitch horn assemblies. The process requires careful disassembly and reassembly of the front bumper area.

First, the technician will turn off the ignition and disconnect the negative battery terminal. The front bumper assembly must then be removed, following specific instructions in the shop manual. This step includes partially detaching the fender garnish clips and protecting the removed portion with tape to prevent damage. Before removing the original horns, a photo of them must be taken for digital documentation, including the last six digits of the VIN and the repair date.

Next, both the low-pitch and high-pitch horns are removed by disconnecting their connectors and mounting bolts, again referencing the shop manual for detailed steps. New high and low-pitch horns are then installed. Finally, the bumper assembly is reinstalled, the battery reconnected, and the horns are tested to ensure proper operation.

Required Parts

To address the Hyundai Tucson inoperative horn issue, the following parts are specified for replacement:

• Horn Assy - Low Pitch: Part Number 96641-CW500QQH
• Horn Assy - High Pitch: Part Number 96651-CW500QQH

Warranty Information

For the replacement of both horn assemblies, the operation code is 50DA17R0, with an estimated operation time of 0.6 M/H. The causal part for this repair is identified as 96611-N9000, with Nature Code 114 and Cause Code ZZ3. This information is crucial for dealerships when submitting warranty claims for the extended coverage under TSB 26-BE-004H.

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Source: NHTSA ID: 11028955