NHTSA ID Number: 10249938
Manufacturer Communication Number: TSB_ELE319
TSB/Document Date: 2024-03-02
Summary
TECHNICAL SERVICE BULLETIN: 2.5L GDI THETA III ECU SOFTWARE UPGRADE FOR ISG OPERATION LOGIC - This bulletin provides information to upgrade the Engine Control Unit (ECU) software on some 2023MY Sportage (NQ5) vehicles equipped with a Theta III 2.5L GDI engine, produced from December 15, 2021 through July 17, 2023 and Sportage (NQ5a) vehicles equipped with Theta III 2.5L GDI engine, produced from January 12, 2022 through July 10, 2023, due to the possibility of an intermittent restart failure in rare circumstances with Idle Stop Go (ISG) enabled. The existing logic may prevent the vehicle from restarting automatically within a short time period (0.2 second) after entering "auto stop" mode and under certain engine and ambient conditions. However, if this occurs, the engine can be restarted by the driver after placing the gear shift selector to Park (P) or Neutral (N) and pressing the ENGINE START/STOP button.
GROUP
MODEL
ELE
2023MY
Sportage (NQ5, NQ5a)
w/Theta III 2.5L GDI
NUMBER
DATE
319
February 2024
TECHNICAL SERVICE BULLETIN
2.5L GDI THETA III ECU SOFTWARE UPGRADE
SUBJECT:
FOR ISG OPERATION LOGIC
This bulletin provides information to upgrade the Engine Control Unit (ECU) software on some 2023MY
Sportage (NQ5) vehicles equipped with a Theta III 2.5L GDI engine, produced from December 15, 2021 through
July 17, 2023 and Sportage (NQ5a) vehicles equipped with Theta III 2.5L GDI engine, produced from January
12, 2022 through July 10, 2023, due to the possibility of an intermittent restart failure in rare circumstances
with Idle Stop Go (ISG) enabled. The existing logic may prevent the vehicle from restarting automatically within
a short time period (0.2 second) after entering “auto stop” mode and under certain engine and ambient
conditions. However, if this occurs, the engine can be restarted by the driver after placing the gear shift
selector to Park (P) or Neutral (N) and pressing the ENGINE START/STOP button. Follow the procedure
outlined in this publication to upgrade the ‘ENGINE’ system software and improve the ISG logic to correct this
concern on the applicable vehicle.
NOTICE
A Technical Service Bulletin is a field fix repair program without customer notification that may be
performed during the warranty period. Any dealer requesting to perform this repair outside the
warranty period will require DPSM approval.
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.
Page 2 of 8
2.5L GDI THETA III ECU ISG SW LOGIC IMPROVEMENT
SUBJECT:
ECU Upgrade Procedure:
To correct this condition, the ECU should be reprogrammed using the KDS
download, as described in this bulletin.
Upgrade Event Name
702. NQ5/NQ5A Theta 2.5GDI ISG Operation Logic Improvement
NOTICE
•
Confirm a fully charged battery (12.3 volts or higher is necessary) is used or utilize a fully
charged jump starter box connected to the battery.
•
Ensure the KDS GDS is sufficiently charged at 60% or higher prior to reflash.
•
All ECU upgrades must be performed with the ignition set to the ‘ON’ position unless otherwise
stated.
•
Damaged VCI II units should not be used and promptly replaced.
•
Be careful not to disconnect the VCI-II connected to the vehicle during the ECU upgrade
procedure.
•
DO NOT start the engine during ECU upgrade.
•
DO NOT turn the ignition key ‘OFF’ or interrupt the power supply during ECU upgrade.
•
When the ECU upgrade is completed, turn the ignition ‘OFF’ and wait 10 seconds before
starting the engine.
•
ONLY use approved ECU upgrade software designated for the correct application.
IMPORTANT
It is recommended to ALWAYS check the Electronic Parts Catalog (EPC) to locate the ECU Part
Number respective to Auto/Manual Mode ROM IDs. DO NOT reference the parts label affixed to
the ECU.
Printed TSB copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.
TSB: ELE319 Sportage (NQ5, NQ5a) February 2024
Page 3 of 8
2.5L GDI THETA III ECU ISG SW LOGIC IMPROVEMENT
SUBJECT:
NOTICE
Before attempting an ECU upgrade on any Kia
model, make sure to first determine whether the
applicable model is equipped with an immobilizer
security system. Failure to follow proper
procedures may cause the PCM to become inoperative after the upgrade and any claims associated
with this repair may be subject to chargeback.
ROM ID INFORMATION TABLE:
Upgrade Event #702
Model
System
Smart Key
ECU P/No.
ROM ID
Previous
New
NQDWD5GMAXXXXL7A
Yes
39100
NQEWD5GMAXXXXL7A
2S210
NQEWD5GMAXXXXL7B
NQ5
NQEWD5GMAXXXXM1A
(FWD)
NQDWD5GKAXXXXL7A
No
39100
NQEWD5GKAXXXXL7A
2S215
NQEWD5GKAXXXXL7B
NQEWD5GMAXXXXM1B
NQEWD5GKAXXXXM1B
NQEWD5GKAXXXXM1A
NQDWD5GMJXXXXL7A
Yes
39100
NQEWD5GMJXXXXL7A
2S232
NQEWD5GMJXXXXL7B
NQEWD5GMJXXXXM1B
NQEWD5GMJXXXXM1A
NQ5
(AWD)
NQDWD5GKJXXXXL7A
No
39100
NQEWD5GKJXXXXL7A
2S233
NQEWD5GKJXXXXL7B
NQEWD5GKJXXXXM1B
NQEWD5GKJXXXXM1A
Yes
NQ5a
(FWD)
No
39100
2S226
39100
2S231
ECM
Yes
NQ5a
(AWD)
No
39100
2S234
39100
2S235
NQEWN5GMAXXXXL7A
NQEWN5GMAXXXXL7B
NQEWN5GMAXXXXM1B
NQEWN5GMAXXXXM1A
NQEWN5GKAXXXXL7A
NQEWN5GKAXXXXL7B
NQEWN5GKAXXXXM1B
NQEWN5GKAXXXXM1A
NQEWN5GMJXXXXL7A
NQEWN5GMJXXXXL7B
NQEWN5GMJXXXXM1B
NQEWN5GMJXXXXM1A
NQEWN5GKJXXXXL7A
NQEWN5GKJXXXXL7B
NQEWN5GKJXXXXM1B
NQEWN5GKJXXXXM1A
To verify the vehicle is affected, be sure to check the Calibration Identification of the vehicle's ECM ROM ID
and reference the Information Table as necessary.
Printed TSB copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.
TSB: ELE319 Sportage (NQ5, NQ5a) February 2024
Page 4 of 8
2.5L GDI THETA III ECU ISG SW LOGIC IMPROVEMENT
SUBJECT:
NOTICE
Prior to performing the ECU upgrade, be sure to check that the KDS is fully charged.
1.
Connect the VCI-II to the OBD-II connector,
located
under
the
driver’s
side
of
the
instrument panel.
NOTICE
The ECU upgrade function on KDS
operates wirelessly. It is not necessary
to perform the upgrade via USB cable.
2.
With the ignition ON, turn ON the KDS tablet.
Select ‘KDS’ from the home screen.
3.
Confirm communication with VCI (A) and then
configure the vehicle (B) using the ‘AUTO VIN’
(C) feature.
B
A
C
4.
Select ‘ECU Upgrade’.
Printed TSB copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.
TSB: ELE319 Sportage (NQ5, NQ5a) February 2024
Page 5 of 8
2.5L GDI THETA III ECU ISG SW LOGIC IMPROVEMENT
SUBJECT:
5.
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TSB/Document ID: TSB_ELE319
Replacement Service Bulletin Number:
MFR Communication Date: 2024-02-06
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ELECTRICAL SYSTEM
MFR Component System:
MFR Component Subsystem:
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