NHTSA ID Number: 11028663

Manufacturer Communication Number: 26-01-010H TSB

TSB/Document Date: 2026-02-10


Summary

Certain Palisade (LX2) vehicles equipped with 3.8L GDI Lambda II engines may not meet engine-out NOx (Nitrogen Oxides) and Particulate Matter (PM) emission standards. This bulletin provides the service procedure to update the emission logic within the Engine Control Module (ECM) to improve engine-out NOx and PM emissions, so they are within permissible specifications. Additionally, improvements to reduce noise during engine start, and enhanced thermostat logic, are also included in the updated ECM software.


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TSB/Document ID: 26-01-010H TSB

Replacement Service Bulletin Number:

MFR Communication Date: 2026-02-03

MFR Internal Campaign ID/Software Version: 9C9

Communication Type: Service Campaign

NHTSA Components: ENGINE

MFR Component System:

MFR Component Subsystem:


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1333

Page 3 of 9

SUBJECT: ECU SOFTWARE UPDATE FOR LAMBDA II EMISSIONS IMPROVEMENT (SERVICE CAMPAIGN 9C9)

Service Procedure:

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

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.

NOTICE
Ensure the vehicle’s battery charge is above 11.0 Volts and the tablet’s battery charge is above
30% before performing a software update to avoid update failure.

i

Information

Turn OFF all lamps (do NOT leave head lamp switch in auto mode) and all accessories.

Perform update with the ignition switch in the ON position.

Do NOT disconnect any cables connected to the vehicle or scan tool during the update.

Do NOT start the engine during the update.

Do NOT turn OFF the ignition switch during the update.

Table of Contents

ECU Update Procedure ......................................................................................................................... 5

Emissions Label Application (for All Vehicles) ........................................................................................ 8

Vehicle Emission Recall – Proof of Correction Card (for Vehicles Registered in Certain States) ............ 9

TSB #: 26-01-010H

Page 4 of 9

SUBJECT: ECU SOFTWARE UPDATE FOR LAMBDA II EMISSIONS IMPROVEMENT (SERVICE CAMPAIGN 9C9)

ECU Update Procedure
1.

Perform the ECU update in Auto Mode.

i

Information

Refer to TSB # 25-GI-011H, “ECU
Update Procedure for Tablet-Based
GDS-Smart”, for additional information.

2.

Verify the ROM ID by selecting the Engine
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 update fails, remove the power
connector from the in-cabin fuse box for
at least 5 seconds. Alternatively,
disconnect the negative (–) 12V battery
terminal, and wait at least 5 seconds.
Reassemble and retry the update.

TSB #: 26-01-010H

Page 5 of 9

SUBJECT: ECU SOFTWARE UPDATE FOR LAMBDA II EMISSIONS IMPROVEMENT (SERVICE CAMPAIGN 9C9)

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.

4.

DIGITAL
DOCUMENTATION

Using the tablet or GDS screen capture
function, take a screenshot of the ECU
upgrade "Success" result screen.

Upload the photo to STUI.
NOTE: The VIN/Date/Time/Mileage
photo imprint is NOT required for GDS
screenshots.

TSB #: 26-01-010H

Page 6 of 9

SUBJECT: ECU SOFTWARE UPDATE FOR LAMBDA II EMISSIONS IMPROVEMENT (SERVICE CAMPAIGN 9C9)

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.

7.

Proceed to Emissions Label Application
(for All Vehicles) on page 8.

NOTICE
If the ECU update fails in Auto Mode, perform the update in Manual Mode using the password(s)
below.
Manual Mode Password:
Event

1332

1333

TSB #: 26-01-010H

Menu

Password

LX2 3.8GDI ECU 39122-3LFN0

2230

LX2 3.8GDI ECU 39132-3LFN0

3230

LX2 3.8GDI ECU 39122-3LFN1

2231

LX2 3.8GDI ECU 39132-3LFN1

3231

LX2 3.8GDI ECU 39122-3LFN2

2232

LX2 3.8GDI ECU 39132-3LFN2

3232

LX2 PE 3.8GDI ECU 39102-3LFN5

2305

LX2 PE 3.8GDI ECU 39102-3LFN7

3207

LX2 PE 3.8GDI ECU 39102-3LFN3

3330

Page 7 of 9

SUBJECT: ECU SOFTWARE UPDATE FOR LAMBDA II EMISSIONS IMPROVEMENT (SERVICE CAMPAIGN 9C9)

Emissions Label Application (for All Vehicles)
1.

Fill in the Dealer Code and Date on the
emissions label, and apply adjacent to the
existing label, on the underside of the hood, as
shown.
Be sure to clean the mounting surface to
ensure proper label adhesion.

2.

DIGITAL
DOCUMENTATION

Using the STUI camera function, take a
photo of the emissions label attached to
the vehicle.

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.

3.

Proceed to the next section and complete the
Vehicle Emission Recall - Proof of
Correction Card for the states listed.
If NOT applicable to your state, the repair
process is complete.

TSB #: 26-01-010H

Page 8 of 9

SUBJECT: ECU SOFTWARE UPDATE FOR LAMBDA II EMISSIONS IMPROVEMENT (SERVICE CAMPAIGN 9C9)

Vehicle Emission Recall – Proof of Correction Card (for Vehicles Registered in Certain States)
For vehicles registered in California, Colorado, Connecticut, Delaware, Maine, Maryland,
Massachusetts, New Jersey, New York, Oregon, Pennsylvania, Rhode Island, Vermont, and
Washington:
VEHICLE EMISSION RECALL - PROOF OF CORRECTION CARD
A Vehicle Emission Recall - Proof of Correction card must be filled out for all vehicles registered in
California, Colorado, Connecticut, Delaware, Maine, Maryland, Massachusetts, New Jersey, New
York, Oregon, Pennsylvania, Rhode Island, Vermont, and Washington. Residents of these states,
who own an affected vehicle, will be required to possess a Vehicle Emission Recall - Proof of
Correction card as evidence of voluntary service campaign completion, when they apply for vehicle
registration renewal.
WHAT TO DO WITH THE CARD:
The Vehicle Emission Recall - Proof of Correction card must be completed by the Dealership’s
Service Manager using a permanent ink pen. A fine point pen is recommended. When filling in the
information, copy the information directly from the vehicle, not from the repair order.
ALL INFORMATION MUST BE PRINTED AND NEAT.
The copy of the card shown below indicates the areas to be filled in. Each area must be filled in.
The completely filled out Vehicle Emission Recall - Proof of Correction card should be given
to the owner of the vehicle upon completion of the Campaign.
1.
2.
3.
4.
5.
6.

Enter Vehicle’s License Number
Enter “Hyundai
Enter Model Year
Enter Model (e.g. Palisade)
Enter the vehicle’s VIN Number
Enter Campaign Number: 9C9

2

1

7. Enter Dealership Name
8. Enter Dealership’s Address
NOTE: Enter the physical address, not the
mailing address (not a P.O. Box)
9. Enter Date of Repair
10. Service Manager Sign Here

5

4

3

6

2

8

7

9

TSB #: 26-01-010H

10

Page 9 of 9

12


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