GROUP

NUMBER

BODY ELECTRICAL

Technical Service Bulletin

DATE

26-BE-002H
MODEL(S)

FEBRUARY 2026

SEE BELOW

INOPERATIVE HORN ASSEMBLY REPLACEMENT

SUBJECT:

 IMPORTANT
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. 5 / 60,000 New Vehicle Limited Warranty
applies. See Warranty Information section for more details.
Description: Some Tucson Internal Engine Combustion (ICE), Hybrid, and Plug-in Hybrid (NX4, NX4
HEV, and NX4 PHEV) vehicles may have an inoperable horn that may be caused by foreign substances
causing internal parts to oxidize. This bulletin provides instructions on how to replace both inoperative
horns.

Applicable Vehicles:
Model Year

Model

Production Dates

Tucson (NX4)

08/06/2024 – 09/05/2024

Tucson Hybrid (NX4 HEV)

06/18/2024 – 04/07/2025

Tucson Plug-in Hybrid (NX4 PHEV)

07/09/2024 – 03/21/2025

2025

VINs Start with
KM8

Parts Information:
Model
Tucson (NX4)
Tucson Hybrid
(NX4 HEV)
Tuscon Plug-in
Hybrid
(NX4 PHEV)

Part Name

Part Number

Figure

Quantity

Horn Assy –
Low Pitch

96641-CW500QQH

Qty: 1

Horn Assy –
High Pitch

96651-CW500QQH

Qty: 1

Circulate To: General Manager, Service Manager, Parts Manager, Warranty Manager, Service
Advisors, Technicians, Body Shop Manager, Fleet Repair

INOPERATIVE HORN ASSEMBLY REPLACEMENT

SUBJECT:

Warranty Information:
Model

Op. Code

Operation

Op. Time

Causal Part

Nature
Code

Cause
Code

50D156R0

Horn Assembly
Replacement
(both horns)

0.6 M/H

96611-N9600

B33

ZZ3

Tucson (NX4)
Tucson Hybrid
(NX4 HEV)
Tucson Plug-in
Hybrid
(NX4 PHEV)

NOTE 1: Submit claim on Claim Entry Screen as "Campaign" type.
NOTE 2: 5 /60,000 New Vehicle Limited Warranty (NVLW) applies to the part(s) and repair
procedure(s) outlined in this TSB. Prior to beginning any repair work, ensure the part(s) associated
with the repair procedure are within NVLW, observing mileage and Warranty Start Date or date of first
use. If the subject part(s) are out of warranty coverage, the dealer has the option to submit a PA
Request for goodwill consideration on a case-by-case basis.
NOTE 3: If any part(s) not subject to this TSB are found in need of replacement while performing the
repair procedure, and the affected part(s) are still under warranty, the dealer may submit a separate
claim using the same repair order. If the part(s) not subject to this TSB are out of warranty coverage,
the dealer has the option to submit a PA Request for goodwill consideration on a case-by-case basis.
NOTE 4: This TSB includes repair justification photos. Op times include VIN, Mileage, and repair
justification photos as outlined in the Digital Documentation Policy.
NOTE 5: The incident parts are subject to callback through the normal Warranty Technical Center
(WTC) parts return process. Claim is subject to debit if the part is not returned.

TSB #: 25-BE-002H

Page 2 of 6
SUBJECT:

INOPERATIVE HORN ASSEMBLY REPLACEMENT

SUBJECT:

Service Procedure:

DIGITAL DOCUMENTATION
This TSB includes repair justification photos. Refer to the latest Warranty Digital Documentation
Policy for requirements.

NOTICE
Applying the recommended torque to all fasteners is essential to reduce potential issues from
occurring after the service procedure.
1.

Turn OFF the ignition.

2.

Tucson (NX4):
Disconnect the negative (-) battery
terminal (A).
Tightening Torque:

lb-ft

6.5

lb-in

78

N.m

8.8

A

Tucson (NX4)

! CAUTION
Equip gloves to prevent hand injury.
Tucson Hybrid (NX4 HEV/NX4 PHEV):
Disconnect the positive (+) 12V battery lithiumpolymer type connector (B).

B

Tucson Hybrid (NX4 HEV)

TSB #: 25-BE-002H

Page 3 of 6
SUBJECT:

INOPERATIVE HORN ASSEMBLY REPLACEMENT

SUBJECT:

3.

Refer to the shop manual to remove the front
bumper assembly (C):
• Body (Interior and Exterior) > Front
Bumper > Front Bumper Assembly >
Repair procedures

NOTICE
Use a plastic trim removal tool to prevent
damage to parts.

C

To prevent clip breakage during bumper
removal, partially remove the fender
garnish by detaching the front 4 clips (D).
Protect the removed portion with painter’s
tape and a microfiber rag (E) to avoid
damage.

D

E

TSB #: 25-BE-002H

Page 4 of 6
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INOPERATIVE HORN ASSEMBLY REPLACEMENT

SUBJECT:

4.

DIGITAL
DOCUMENTATION

Using the STUI camera function, take a
photo of the original horn.
Upload the photo to STUI.

NOTE: If the STUI camera function is
NOT used, write the last 6 digits of the
VIN and date of repair on a piece of
paper to include in the photo.

5.

Refer to the shop manual to remove both
horns (F, G) by disconnecting the horn
connector and removing the mounting bolt:
• Body Electrical System > Horn >
Repair procedure

F

Tightening Torque:
lb-ft

7.25

lb-in

87

N.m

9.8

F

G

G

TSB #: 25-BE-002H

Page 5 of 6
SUBJECT:

SUBJECT:

INOPERATIVE HORN ASSEMBLY REPLACEMENT

6.

Install the new high and low-pitch horns in the
reverse order of removal.

7.

Reinstall bumper and connect 12V battery in
the reverse order of the removal process.

8.

Test the horns to confirm proper operation.

9.

This service procedure is now complete.

TSB #: 25-BE-002H

Page 6 of 6
SUBJECT: