NHTSA ID Number: 11005430
Manufacturer Communication Number: TSB_TRA111
TSB/Document Date: 2024-08-01
Summary
TECHNICAL SERVICE BULLETIN: 8-SPEED DUAL CLUTCH TRANSMISSION EOP SENSORLESS LOGIC IMPROVEMENT - This bulletin provides information to improve the Electric Oil Pump ‘EOP’ operation logic of the automatic transmission ‘A/T’ on some 2021-2023MY Sorento (MQ4a) vehicles produced from September 9, 2020 through December 29, 2023 and 2021-2023MY K5 (DL3a) vehicles produced from March 24, 2020 to December 18, 2023, equipped with a 2.5L T-GDI Theta III engines and 8-Speed Dual Clutch Transmissions (DCT).
GROUP
MODEL
TRA
2021-2023 MY
Sorento (MQ4a),
K5 (DL3a)
w/2.5L T-GDI w/DCT
NUMBER
DATE
111
July 2024
TECHNICAL SERVICE BULLETIN
8-SPEED DUAL CLUTCH TRANSMISSION
SUBJECT:
EOP SENSORLESS LOGIC IMPROVEMENT
This bulletin provides information to improve the Electric Oil Pump ‘EOP’ operation logic of the automatic
transmission ‘A/T’ on some 2021-2023MY Sorento (MQ4a) vehicles produced from September 9, 2020
through December 29, 2023 and 2021-2023MY K5 (DL3a) vehicles produced from March 24, 2020 to
December 18, 2023, equipped with a 2.5L T-GDI Theta III engines and 8-Speed Dual Clutch Transmissions
(DCT). The affected vehicles may exhibit abnormal/harsh shifting, gear slipping, no gear engagement in Drive
‘D’ and/or Reverse ‘R’ shift selection, accompanied by a Malfunction Indicator Lamp (MIL) ‘ON’ illuminated on
the instrument cluster with DTC(s) P1C2D03, P1C2D1C, P1C2E92 and/or P1C2E94 stored. Follow the procedure
outlined in this publication to upgrade the software of the ‘A/T’ system.
DTC Descriptions:
P1C2D03 – HP EOP Motor Position Sensor
P1C2D1C - HP EOP Motor Position Sensor
P1C2E92 – HOP EOP EOP Motor Out of Control
P1C2E94 – HP EOP Motor Control
A Vehicle Diagnosis Number (VDN) must be created for a related DTC(s). If a VDN is not created,
Warranty claim submission issues WILL occur.
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 7
SUBJECT:
8-SPEED DUAL CLUTCH TRANSMISSION EOP SENSORLESS LOGIC IMPROVEMENT
ECU Upgrade Procedure:
To correct this condition, the ECU should be reprogrammed using the KDS
download, as described in this bulletin.
Upgrade Event Name
741.MQ4a 8DCT HP EOP Sensorless Logic Improvement
742.DL3a 8DCT HP EOP Sensorless Logic Improvement
Note: Refer to page 5 for additional instructions after completing this software upgrade.
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.
Connect the negative (-) terminal to the battery as shown below.
Printed TSB copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.
TSB: TRA111 Sorento (MQ4a) and K5 (DL3a) July 2024
Page 3 of 7
8-SPEED DUAL CLUTCH TRANSMISSION EOP SENSORLESS LOGIC IMPROVEMENT
SUBJECT:
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 #741 Sorento (MQ4a) or #742 K5 (DL3a)
Model
Engine
IMMO
Sorento
(MQ4a)
ECU P/No.
Theta III
K5
(DL3a)
Yes
Previous
954A0 2N180
WMQ4T25XXX900NSD
954A1 2N180
WMQ4T25XXX920NSE
954A0 2N181
2.5 T-GDI
ROM ID
954A1 2N181
WMQ4T25XXW900NS1
WMQ4T25XXW920NS3**
WMQ4T25XXW920NS2
WDL3T25XXX900NS8
954A1 2N300
WDL3T25XXX920NS9
954A1 2N301
WMQ4T25XXX920NSF*
WMQ4T25XXW900NS0
954A0 2N300
954A0 2N301
New
WDL3T25XXX920NSA*
WDL3T25XXW900NS0
WDL3T25XXW900NS1
WDL3T25XXW920NS3**
WDL3T25XXW920NS2
Note: *Wave Weight Not Increased (-) or ** Wave Weight Increased (+)
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.
Refer to TSB SST081 for instructions to upgrade the ‘A/T’ system:
UPGRADE EVENT:
741.MQ4a 8DCT HP EOP Sensorless Logic
Improvement
or
742.DL3a 8DCT HP EOP Sensorless Logic
Improvement
Proceed to Page 5 and complete the three (3)
additional steps.
Printed TSB copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.
TSB: TRA111 Sorento (MQ4a) and K5 (DL3a) July 2024
Page 4 of 7
SUBJECT:
8-SPEED DUAL CLUTCH TRANSMISSION EOP SENSORLESS LOGIC IMPROVEMENT
Manual Upgrade Procedure:
NOTICE
The manual upgrade should ONLY be performed if the automatic upgrade fails.
If the automatic upgrade fails, turn the ignition ‘OFF’ for about 10 seconds then place it back in
the ‘ON’ position to reset the control unit BEFORE performing manual upgrade.
See table below for ‘Manual Mode’ passwords.
Manual Mode ECU Upgrade Passwords
Event No.
741
742
Menu
Password
MQ4a Theta 2.5T 8DCT : 954A0/A1-2N180
4648
MQ4a Theta 2.5T 8DCT : 954A0/A1-2N181
4649
DL3a Theta 2.5T 8DCT : 954A0/A1-2N300
4724
DL3a Theta 2.5T 8DCT : 954A0/A1-2N301
4725
Printed TSB copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.
TSB: TRA111 Sorento (MQ4a) and K5 (DL3a) July 2024
Page 5 of 7
SUBJECT:
8-SPEED DUAL CLUTCH TRANSMISSION EOP SENSORLESS LOGIC IMPROVEMENT
After completing the installation of the software upgrade, proceed to perform the
following three (3) steps outlined below:
Air Bleeding Procedure:
Using KDS, select S/W Management → A/T →
Systems → Double Clutch Transmission (or
Automatic transmission) → Air Bleeding.
Transmission Learning Procedure:
Using KDS, select S/W Management → A/T →
Systems → Double Clutch Transmission (or
Automatic
→
Learning.
Operation Test:
Refer to Page 6 and complete the following
three (3) tests to confirm normal vehicle
operation:
A. Stop Test
B. Creep Test
C. Drive Test
Printed TSB copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.
TSB: TRA111 Sorento (MQ4a) and K5 (DL3a) July 2024
Page 6 of 7
SUBJECT:
8-SPEED DUAL CLUTCH TRANSMISSION EOP SENSORLESS LOGIC IMPROVEMENT
Operation Tests:
The following test(s) described below can be used to help identify if the TSB related symptom(s) is/are
present on the affected vehicle. If a vehicle is in with the decribed symptoms on page one (1) but does not
have a related DTC(s) stored, the test(s) described below can be performed to check if a DTC is set during
diagnose.
A.
Stop Test
1.
Ignition ‘ON’ and depress the ‘Brake’ pedal.
2.
Shift from N → D, then D → N, then N → R, then R → P, then P → R, then R → D, D → R.
3.
Repeat Step 2, three times (3x) total
Note: Verify that no shock occurs during shift selection. Be sure to shift into ‘P’ once complete.
B.
Creep Test
1.
Shift to Park ‘P’, then P → D.
2.
Slowly release brake pedal for two (2) seconds.
3.
Shift from Drive ‘D’ to Park ‘P’, then P → R
4.
Slowly release brake pedal for two (2) seconds.
5.
Shift from Reverse ‘R’ to Park ‘P’, then P → D
6.
Repeat Steps 1-5, three times (3x) total
Note: Verify the vehicle moves within 1 to 2 seconds upon releasing brake pedal (there should be no
rattled or delayed movement). Be sure to shift into ‘P’ once complete.
C.
Drive Test
1.
Drive vehicle to an open straight road with Idle Stop Go (ISG) feature ‘ON’.
2.
Come to a ‘Stop’ in Drive ‘D’ while the ‘Brake’ pedal is depressed.
3.
Release the ‘Brake’ pedal and depress the ‘Accelerator’ pedal (20–30%) APS
4.
Allow vehicle transmission to shift through gears (1 → 8).
5.
Depress the brake pedal and come to a complete stop.
6.
Repeat Steps 1-5, three times (3x) total
Note: Verify that the vehicle idles smoothly, turns ‘ON’ normally during drive while ISG is ‘ON’ and that
the upshift operation is normal (no rattle, hard shift or slippage between shifts is present).
Printed TSB copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.
TSB: TRA111 Sorento (MQ4a) and K5 (DL3a) July 2024
Page 7 of 7
SUBJECT:
8-SPEED DUAL CLUTCH TRANSMISSION EOP SENSORLESS LOGIC IMPROVEMENT
AFFECTED VEHICLE RANGE:
Model
Production Date Range
Sorento (MQ4a)
September 9, 2020 to December 29, 2023
K5 (DL3a)
March 24, 2020 to December 18, 2023
REQUIRED TOOL:
Tool Name
SST #
KDS
N/A
Figure
Comments
Kia Diagnostic System
WARRANTY INFORMATION:
N Code: W11 C Code: ZZ3
Claim
Type
Causal P/N
Qty.
Repair
Labor Op
Op
Replacement
Description
Code
Time
P/N
8DCT EOP
W
46110 2F600
0
Sensorless Logic
Improvement
954A1F03
1.1
M/H
N/A
Qty.
0
Note: A Vehicle Diagnosis Number (VDN) must be created for DTC(s) P1C2D03, P1C2D1C, P1C2E92
and/or P1C2E94. If a VDN is not created, Warranty claim submission issues WILL occur. All claims are
subject to Warranty review and chargeback.
Printed TSB copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.
TSB: TRA111 Sorento (MQ4a) and K5 (DL3a) July 2024
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TSB/Document ID: TSB_TRA111
Replacement Service Bulletin Number:
MFR Communication Date: 2024-07-31
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ELECTRICAL SYSTEM
MFR Component System: TRA
MFR Component Subsystem:
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