2025 Hyundai Tucson Inoperative Horn TSB 26-BE-002H

Symptoms

Owners of affected 2025 Hyundai Tucson vehicles may experience an inoperative horn. This means the horn will not sound when activated, which can be a significant safety concern, especially in emergency situations.

Diagnosis / Trigger Conditions

The root cause for the Hyundai Tucson inoperative horn is identified as foreign substances causing internal parts of the horn assembly to oxidize. This oxidation prevents the horn from functioning correctly. Technicians will confirm the inoperative horn condition as part of the diagnostic process before proceeding with any repair work.

Important Warnings and Owner Information

Hyundai TSB 26-BE-002H includes several important points for both owners and service centers:

• Repair Justification Required: "This field action requires justification in the form of a customer concern, and a confirmed case for the related symptom outlined in the TSB, prior to any repair work. If justification requirements are not met, any submitted claims are subject to debit." This means you must report the inoperative horn issue to your dealer for diagnosis.
• Warranty Coverage: The repair is covered under the 5-year / 60,000-mile New Vehicle Limited Warranty (NVLW). Ensure your vehicle is within this coverage period. If your vehicle is outside of warranty, your dealer may submit a request for goodwill consideration on a case-by-case basis.
• Digital Documentation: The repair process requires technicians to take specific photos of the original horn for warranty claim justification. If the standard STUI camera function is not used, the last 6 digits of the VIN and the repair date must be written on paper and included in the photo.
• Parts Return: The removed horn assemblies are subject to a callback process through the Warranty Technical Center (WTC). Claims may be debited if the parts are not returned.

Repair Procedure Summary

The repair for the Hyundai Tucson inoperative horn involves replacing both the low-pitch and high-pitch horn assemblies. The general steps outlined in TSB 26-BE-002H are:

1. The ignition is turned off.
2. The vehicle's battery is disconnected. For gasoline-powered Tucson (NX4) models, the negative battery terminal is disconnected. For Tucson Hybrid (NX4 HEV) and Plug-in Hybrid (NX4 PHEV) models, the positive 12V lithium-polymer type battery connector is disconnected.
3. The front bumper assembly is carefully removed, following the detailed instructions in the shop manual. This includes partially detaching the fender garnish and protecting surrounding areas to prevent damage.
4. A photo of the original horn is taken for digital documentation, as required for warranty claims.
5. Both the low-pitch and high-pitch horns are removed by disconnecting their electrical connectors and mounting bolts.
6. The new horn assemblies are installed in their respective locations.
7. The front bumper and battery are reinstalled.
8. Finally, the new horns are tested to confirm proper operation.

Required Tools or Parts

To address the Hyundai Tucson inoperative horn, the following new horn assemblies are required:

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

These parts replace the original horn assemblies that may have oxidized internally. The causal part for warranty claims is listed as 96611-N9600.

Owner Action

If you own a 2025 Hyundai Tucson and are experiencing an inoperative horn, you should schedule an appointment with your authorized Hyundai dealer. Inform them of the issue, and they will diagnose the problem and perform the necessary repairs under TSB 26-BE-002H, provided your vehicle is within the New Vehicle Limited Warranty period. The repair involves replacing both horn assemblies to resolve the Hyundai Tucson inoperative horn condition.

Source: NHTSA ID: 11028953, TSB 26-BE-002H