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NHTSA ID Number: 11030389

Manufacturer Communication Number: WTY042_TSB

TSB/Document Date: 2026-04-01


Summary

WARRANTY EXTENSION CAMPAIGN: TECHNICAL SERVICE BULLETIN: HORN ASSEMBLY INSPECTION AND REPLACEMENT (WTY042) - This bulletin provides information associated with the ‘Warranty Extension Program’ (WTY042) to inspect and, if necessary, replace the horn assembly on certain vehicles listed in the table below. The affected vehicles may experience an unusual or different horn sound than normal, or an inoperative horn, caused by corrosion inside the electric horn and/or carbonization of the contact point. The warranty coverage for repairs related to the horn assembly has been extended from 5 years / 60,000 miles to 10 years / 120,000 miles, whichever comes first, starting from the date the vehicle was first put into service.


GROUP

MODEL

BOD

2021-2025MY Sorento (MQ4a)
and
2021-2025MY Sorento HybrideBay logo (MQ4 HEV)
and
2022-2025MY Sorento Plug-in HybrideBay logo
(MQ4 PHEV)

NUMBER

DATE

351

March 2026

TECHNICAL SERVICE BULLETIN
SUBJECT:

HORN ASSEMBLY INSPECTION AND REPLACEMENT (WTY042)

This bulletin provides information associated with the ‘Warranty Extension Program’ (WTY042) to inspect and,
if necessary, replace the horn assembly on certain vehicles listed in the table below. The affected vehicles
may experience an unusual or different horn sound than normal, or an inoperative horn, caused by corrosion
inside the electric horn and/or carbonization of the contact point. The warranty coverage for repairs related
to the horn assembly has been extended from 5 years / 60,000 miles to 10 years / 120,000 miles, whichever
comes first, starting from the date the vehicle was first put into service. Follow the procedure outlined in this
publication to inspect and, if necessary, replace both the high‑pitch and low‑pitch horn assemblies with new
ones.
Model Year

Model

Production Date Range

2021-2025

Sorento (MQ4a)

September 10, 2020 to June 3, 2025

2021-2025

Sorento HybrideBay logo (MQ4 HEV)

September 2, 2020 to January 24, 2025

2022-2025

Sorento Plug-in HybrideBay logo (MQ4 PHEV)

June 29, 2021 to January 20, 2025

 NOTICE
A Warranty Extension Campaign is a repair program with customer notification. There is no charge to the
vehicle owner for this repair.
Repair status for a VIN is provided on KDealer+ (Service → Warranty Coverage → Warranty Coverage Inquiry
→ Campaign Information). Not completed Recall / Service Action reports are available on KDealer+ (Consumer
Affairs → Not Completed Recall → Recall VIN → Select Report), which includes a list of affected vehicles.
This issue number is WTY042.

A printed copy is for reference only; publication information can be updated at any time.
Always refer to KGIS for the latest information. After logging in kdealer.com, the newest technical
publications are listed in ‘Service Releases’ and has the latest service information that has been released.
KiaeBay logo America, Inc. Confidential

Page 2 of 4

HORN ASSEMBLY INSPECTION AND REPLACEMENT (WTY042)

SUBJECT:

Inspection Procedure:
1.

Press the Horn Pad (A) to confirm normal
operation.

If the horn operates normally, this TSB
does not apply. Claim inspection only
Labor Op Codes 262001R0 or 252A61I0.

If the horn is inoperative or the tone is
distorted,

proceed

to

the

‘Replacement

Procedure’ below.

Repair Procedure:

 NOTICE
For 24–25MY MQ4a and 25MY MQ4 P/HEV, the replacement horns will install in a vertical
orientation, which differs from the original mounting position.
High-Pitch (LH)

1.

Low-Pitch (RH)

Remove the Front Bumper Assembly (B) by
referring to “Body (Interior and Exterior) →
Front Bumper → Front Bumper Assembly →
Repair Procedures” in the applicable Shop
Manual on KGIS.

Printed document copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.

TSB: BOD351 Sorento (MQ4, MQ4a) March 2026
KiaeBay logo America, Inc. Confidential

Page 3 of 4

HORN ASSEMBLY INSPECTION AND REPLACEMENT (WTY042)

SUBJECT:

2.

Replace the low pitch and high pitch horns (C) after disconnecting the horn connector (D) and removing
bolt (E) by referring to “Body Electrical System → Horn → Repair procedures” in the applicable Shop
Manual on KGIS.
Tightening torque for nut/bolt (E):
8.2 – 9.0 lb.ft (11.1 – 12.3 N.m)

High Pitch

3.

Low Pitch

Reinstall all removed parts in the reverse order
of removal.

4.

Confirm normal operation.

AFFECTED VEHICLE RANGE:
Model Year

Model

Production Date Range

2021-2025

Sorento (MQ4a)

September 10, 2020 to June 3, 2025

2021-2025

Sorento HybrideBay logo (MQ4 HEV)

September 2, 2020 to January 24, 2025

2022-2025

Sorento Plug-in HybrideBay logo (MQ4 PHEV)

June 29, 2021 to January 20, 2025

REQUIRED PART:
Model

Part Name

21-23MY Sorento(MQ4a)
and
21-24MY Sorento P/HEV
(MQ4 P/HEV)

Horn

24-25MY Sorento (MQ4a)

Assembly

and
25MY Sorento P/HEV
(MQ4 P/HEV)

Part Number

Figure

Qty.

Comments

96611 L2000QQK

Low Pitch

96621 L2000QQK

High Pitch
1

96611 P2700QQK

Low Pitch

96621 P2700QQK

High Pitch

Please be advised that the required part for this repair is currently under PartsEye ordering control.
Dealers must follow the instructions outlined in Parts Bulletin MI-25-08R2 for proper ordering
procedures.
Printed document copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.

TSB: BOD351 Sorento (MQ4, MQ4a) March 2026
KiaeBay logo America, Inc. Confidential

Page 4 of 4
SUBJECT:

HORN ASSEMBLY INSPECTION AND REPLACEMENT (WTY042)

WARRANTY INFORMATION:
N Code: I11 C Code: ZZ3
Model

Claim

Causal

Type

P/N

21-25MY

96611

(MQ4 P/HEV)

L2000
W
96611

(MQ4a)

P2500

Claim

Causal

Type

P/N

21-25MY

96611

(MQ4 P/HEV)

L2000
W

21-25MY
(MQ4a)

P2500

Labor Op

Op

Replacement

Description

Code

Time

P/N

Qty.

Inspection

0.1

Only

M/H

N/A

0

252A61I0

Qty.

Repair

Labor Op

Op

Replacement

Description

Code

Time

P/N

Qty.

96611 L2000QQK

262001R1

and

Inspection +
0

96611

Repair

262001R0
0

21-25MY

Model

Qty.

Horn

0.7

Assembly

M/H

Replacement
252A61R0

96621 L2000QQK
or

1

96611 P2700QQK
and
96621 P2700QQK

Note: Refer to Warranty Bulletin 2026-01 for claim submission procedures. For Substitute
Transportation policy, please refer to Service Policy and Procedures Manual (SPPM) 6.11 “KiaeBay logo Substitute
Transportation”.

Printed document copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.

TSB: BOD351 Sorento (MQ4, MQ4a) March 2026
KiaeBay logo America, Inc. Confidential

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TSB/Document ID: WTY042_TSB

Replacement Service Bulletin Number:

MFR Communication Date: 2026-03-24

MFR Internal Campaign ID/Software Version: WTY042

Communication Type: Service Bulletin/Repair Instructions

NHTSA Components: ELECTRICAL SYSTEM

MFR Component System: ELE

MFR Component Subsystem:


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