NHTSA ID Number: 11028953
Manufacturer Communication Number: 26-BE-002H TSB
TSB/Document Date: 2026-02-24
Summary
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.
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TSB/Document ID: 26-BE-002H TSB
Replacement Service Bulletin Number:
MFR Communication Date: 2026-02-12
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: UNKNOWN OR OTHER
MFR Component System:
MFR Component Subsystem:
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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
SUBJECT:
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:
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