GROUP

NUMBER

CAMPAIGN

Technical Service Bulletin
SUBJECT:

DATE
JULY 2024

24-01-047H
MODEL(S)
TUCSON (NX4A)

ICU SOFTWARE UPDATE FOR INCORRECT REAR SEAT BELT
WARNING LIGHT AND TURN SIGNAL ERROR MESSAGE
(SERVICE CAMPAIGN TBX)

 IMPORTANT
Dealers must perform this service campaign on all affected vehicles prior to customer retail delivery
and whenever an affected vehicle is in the shop for any maintenance or repair.
Access the “Vehicle Information” screen via WebDCS to identify open campaigns.
Description: Certain 2024MY Tucson (NX4A) vehicles may exhibit a seat belt warning light for the rear
seats illuminating incorrectly and/or a “Check turn signal” error message on the cluster. Follow the
procedure in this bulletin to update the software for the Integrated Control Unit (ICU) to correct these
conditions.

Applicable Vehicles (Certain):
• 2024MY Tucson (NX4A) produced 9/29/2023 – 12/29/2023.

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

SUBJECT:

ICU SOFTWARE UPDATE FOR INCORRECT REAR SEAT BELT WARNING
LIGHT AND TURN SIGNAL ERROR MESSAGE (SERVICE CAMPAIGN TBX)

GDS Information:
System

Event #

Description

1113. NX4a 24MY ICU SW UPGRADE(TURN SIGNAL CONTROL
LOGIC)
*or use a later available event as listed in the GDS Update screen if one is available.
ICU

1113*

Warranty Information:
Model

Op. Code

Operation

Op.
Time

Casual Part

Nature
Code

Cause
Code

Tucson
0.3
40DA05R0
ICU Software Update
91951-CW113
I14
ZZ3
(NX4A)
M/H
NOTE 1: Submit claim on Claim Entry Screen as “Campaign” type.
NOTE 2: If a part is found in need of replacement while performing this campaign and the affected
part is still under warranty, submit a separate claim using the same repair order. If the affected part is
out of warranty, submit a Prior Approval request for goodwill consideration prior to performing the
work.
NOTE 3: Op times include VIN, Mileage, and photo capture of the “ECU update complete” screen as
outlined in the Digital Documentation Policy.
NOTE 4: If a part is found in need of replacement while performing this TSB and the affected part is
still under warranty, submit a separate claim using the same repair order. If the affected part is out of
warranty, submit a Prior Approval request for goodwill consideration prior to performing the work.

ROM ID Information:
Model

System

ECU
Part Number

ICU

91951-CW113
91951-CW123
91951-CW133
91951-CW143

Tucson
(NX4A)

TSB #: 24-01-047H

ROM ID
Old

New

3020

3021

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SUBJECT:

SUBJECT:

ICU SOFTWARE UPDATE FOR INCORRECT REAR SEAT BELT WARNING
LIGHT AND TURN SIGNAL ERROR MESSAGE (SERVICE CAMPAIGN TBX)

Service Procedure:

STUI
This TSB includes Repair validation photos. Refer to the latest Warranty Digital Documentation
Policy for requirements.

NOTICE
GDS Vehicle Battery Low Voltage Warning:
If voltage is below 12 volts per the GDS warning, then select Back and attach a battery charger to
ensure an adequate battery charge for reliable update results. Turn ignition back ON, and then
retry the ECU update again.

ECU Update Procedure
1.

Perform the ECU update in Auto Mode.

i

Information

Refer to TSB 15-GI-001, ECU Update
Procedure for additional information.

TSB #: 24-01-047H

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SUBJECT:

SUBJECT:

2.

ICU SOFTWARE UPDATE FOR INCORRECT REAR SEAT BELT WARNING
LIGHT AND TURN SIGNAL ERROR MESSAGE (SERVICE CAMPAIGN TBX)

Select the ICU system to scan the vehicle’s
current ROM ID.

NOTICE
Check the current ROM ID version
and compare it to the ROM ID
Information Table before attempting to
perform the software update.

NOTICE
If the upgrade fails, please remove
the power connector or the battery (-)
connector from the indoor fuse box for
at least 5 seconds and reassemble it
to retry the upgrade.

3.

After the ECU update process shows 100%
complete, follow the prompts on the screen to
cycle the ignition OFF for at least 10 seconds
to reset the control unit. (Certain models may
take up to 30 seconds.)

i

Information

Use the Refresh button to reset the timer.

TSB #: 24-01-047H

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SUBJECT:

SUBJECT:

4.

ICU SOFTWARE UPDATE FOR INCORRECT REAR SEAT BELT WARNING
LIGHT AND TURN SIGNAL ERROR MESSAGE (SERVICE CAMPAIGN TBX)

STUI
Take a screenshot of the ECU update
complete screen using your tablet and
upload to STUI.

5.

Perform an All Systems Fault Code search
and erase DTC history that had incidentally
occurred from the ECU update.

6.

Start the engine to confirm proper operation of
the vehicle.

Manual Mode Passwords: Event #1113

NOTICE
You must initially perform the GDS ECU update in Auto Mode.
• If the ECU update starts but then fails in Auto Mode, perform the update in Manual Mode
to recover.
ECM Menu

Password

NX4A 24MY ICU 91951-CW113
NX4A 24MY ICU 91951-CW123
NX4A 24MY ICU 91951-CW133

1113

NX4A 24MY ICU 91951-CW143

TSB #: 24-01-047H

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