NHTSA ID Number: 10252354
Manufacturer Communication Number: 24-FL-003H
TSB/Document Date: 2024-04-02
Summary
This bulletin contains the software update procedure for the Engine Control Unit (ECU) on certain 2021-2023MY Elantra (CN7) and 2022-2023MY Kona (OS) vehicles equipped with the 1.6 liter T-GDI Gamma 2 engine, that may exhibit a warning lamp with one or more of the DTCs listed below: • P250F - Engine Oil Level Too Low • P011B, P050C - Engine Coolant Temperature/intake Air Temperature Correlation • P00B7, P2B60 - Engine Coolant Flow Low/Performance
GROUP
NUMBER
FUEL SYSTEM
DATE
Technical Service Bulletin
24-FL-003H
MODEL(S)
MARCH 2024
ELANTRA (CN7)
KONA (OS)
ECU SOFTWARE UPDATE FOR T-GDI LOGIC IMPROVEMENT
SUBJECT:
Description: This bulletin contains the software update procedure for the Engine Control Unit (ECU)
on certain 2021-2023MY Elantra (CN7) and 2022-2023MY Kona (OS) vehicles equipped with the 1.6
liter T-GDI Gamma 2 engine, that may exhibit a warning lamp with one or more of the DTCs listed
below:
•
P250F - Engine Oil Level Too Low
•
P011B, P050C - Engine Coolant Temperature/intake Air Temperature Correlation
•
P00B7, P2B60 - Engine Coolant Flow Low/Performance
Applicable Vehicles:
• 2021–2023MY Elantra (CN7) equipped with the 1.6T-GDI engine
• 2022–2023MY Kona (OS) equipped with the 1.6T-GDI engine
GDS Information:
System
Event #
Description
1054
CN7 With GAMMA2 T-GDI - Improved Logic Application For Specific Issue
1055
OS PE with GAMMA2 T-GDI - Improved Logic Application For Specific Issue
Engine
(*or use a later available event as listed in the GDS Engine System Update screen if one is available.)
Warranty Information:
Model
Elantra (CN7)
Kona (OS)
Op. Code
39121F18
Operation
ECU Update
Op.
Time
Casual Part
Nature
Code
Cause
Code
0.3
M/H
Please refer to
WebLTS for
applicable part to
labor op
combination
I11
ZZ3
NOTE 1: Normal warranty applies.
NOTE 2: Submit claim on Claim Entry Screen as “Warranty” type.
NOTE 3: This TSB includes Repair validation photos. 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.
Circulate To: General Manager, Service Manager, Parts Manager, Warranty Manager, Service
Advisors, Technicians, Body Shop Manager, Fleet Repair
SUBJECT:
ECU SOFTWARE UPDATE FOR T-GDI LOGIC IMPROVEMENT
Service Procedure:
STUI
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
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.
TSB #: 24-FL-003H
Page 2 of 6
SUBJECT:
ECU SOFTWARE UPDATE FOR T-GDI LOGIC IMPROVEMENT
SUBJECT:
1.
Perform the ECU update in Auto Mode.
Use the ID Check to verify the ROM ID before
updating the software.
2.
STUI
Take a screenshot of the ECU update
complete screen using your tablet and
upload to STUI.
3.
After the ECU update process shows 100%
complete, cycle the ignition key to OFF for at
least 10 seconds to reset the control unit.
TSB #: 24-FL-003H
Page 3 of 6
SUBJECT:
SUBJECT:
ECU SOFTWARE UPDATE FOR T-GDI LOGIC IMPROVEMENT
4.
Perform an All Systems Fault Code search
and erase DTC history that had incidentally
occurred from the ECU update.
5.
Start the vehicle to confirm proper operation of
the vehicle.
TSB #: 24-FL-003H
Page 4 of 6
SUBJECT:
ECU SOFTWARE UPDATE FOR T-GDI LOGIC IMPROVEMENT
SUBJECT:
ROM ID Information Table: Event 1054
Model
TM
ROM ID
ECU
Part Number
Yes
39121-2MCN0
6MT
Yes
39125-2MCN0
Yes
39121-2MCN1
6MT
Yes
39125-2MCN1
Yes
39121-2MCN2
6MT
Yes
39125-2MCN2
21MY
CN7
22MY
CN7
23MY
CN7
Old
New
TCN-1NU06F32BH01
TCN-1NU06F22BH01
TCN-1NU06F12AH01
TCN-1NU06F42DH01
TCN-1NU06F52JH01
TCN-1NU06F32B601
TCN-1NU06F22B601
TCN-1NU06F12A601
TCN-1NU06F42D601
TCN-1NU06F52J601
TCN-2NU06F02BH01
TCN-2NU06F12BH01
TCN-2NU06F22DH01
TCN-2NU06F32JH01
TCN-2NU06F02B601
TCN-2NU06F12B601
TCN-2NU06F22D601
TCN-2NU06F32J601
TCN-3NU06F02MH01
TCN-3NU06F12NH01
TCN-3NU06F22NH01
TCN-3NU06F02M601
TCN-3NU06F12N601
TCN-3NU06F22N601
TCN-1NU06F62JH01
TCN-1NU06F62J601
TCN-2NU06F42JH01
TCN-2NU06F42J601
TCN-3NU06F3NAH01
TCN-3NU06F3NA601
ROM ID Information Table: Event 1055
Model
TM
22MY
OS
7DCT
23MY
OS
ROM ID
ECU
Part Number
Old
New
39121-2MAL0
TOS-1NU06F02EH0K
TOS-1NU06F12FH0K
TOS-1NU06F22FH0K
TOS-1NU06F32FH0K
TOS-1NU06F42FH0K
39121-2MAL1
TOS-3NU06F02MH0K
TOS-3NU06F12NH0K
TOS-3NU06F2NAH0K
Yes
TSB #: 24-FL-003H
Page 5 of 6
SUBJECT:
SUBJECT:
ECU SOFTWARE UPDATE FOR T-GDI LOGIC IMPROVEMENT
Manual Mode Password: Event 1054
ECM Menu
Password
CN7 ECU 39121-2MCN0
6665
CN7 ECU 39125-2MCN0
8858
CN7 ECU 39121-2MCN1
5045
CN7 ECU 39123-2MCN1
3111
CN7 ECU 39125-2MCN1
5470
CN7 ECU 39127-2MCN1
6931
CN7 ECU 39121-2MCN2
2321
CN7 ECU 39123-2MCN2
7621
CN7 ECU 39125-2MCN2
1132
CN7 ECU 39127-2MCN2
1270
Manual Mode Password: Event 1055
ECM Menu
Password
OS PE ECU 39121-2MAL0
3041
OS PE ECU 39121-2MAL1
7060
TSB #: 24-FL-003H
Page 6 of 6
SUBJECT:
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TSB/Document ID: 24-FL-003H
Replacement Service Bulletin Number:
MFR Communication Date: 2024-03-04
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ENGINE AND ENGINE COOLING
MFR Component System:
MFR Component Subsystem:
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