NHTSA ID Number: 10231841
Manufacturer Communication Number: TSB_ELE262_R1
TSB/Document Date: 2023-03-06
Summary
TECHNICAL SERVICE BULLETIN: IBU LOGIC IMPROVEMENT FOR SMART KEY BATTERY DRAIN - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides the procedure to update the software logic of the Integrated Body Control Unit (IBU) system on some 2021-2022MY K5 (DL3a) vehicles produced from March 27, 2020 through May 12, 2022, which may exhibit excessive discharge of the smart key battery. Follow the procedure outlined in this publication to apply the improved logic to the "IBU" system using the KDS ECU Upgrade function as described in this bulletin and replace the batteries on both of the customer’s key fobs.
GROUP
MODEL
ELE
2021-2022MY
K5 (DL3a)
NUMBER
DATE
262 (Rev 1, 2/10/2023)
September 2022
TECHNICAL SERVICE BULLETIN
SUBJECT:
IBU LOGIC IMPROVEMENT FOR
SMART KEY BATTERY DRAIN
NOTICE
This bulletin has been revised to include additional information. New/revised sections of this
bulletin are indicated by a black bar in the margin area.
This bulletin provides the procedure to update the software logic of the Integrated Body Control Unit (IBU)
system on some 2021-2022MY K5 (DL3a) vehicles produced from March 27, 2020 through May 12, 2022,
which may exhibit excessive discharge of the smart key battery. Follow the procedure outlined in this
publication to apply the improved logic to the ‘IBU’ system using the KDS ECU Upgrade function as described
in this bulletin and replace the batteries on both of the customer’s key fobs. For confirmation that the latest
reflash has been applied to a vehicle you are working on, verify the ROM ID using the table on pages 3-5 of
this bulletin.
Kia
Diagnostic System (KDS)
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 10
IBU LOGIC IMPROVEMENT FOR SMART KEY BATTERY DRAIN
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
621. DL3a IBU UPGRADE FOR SMART KEY OPERATION
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 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.
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.
Printed TSB copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.
TSB: ELE262 (Rev 1) K5 (DL3a) September 2022
Page 3 of 10
IBU LOGIC IMPROVEMENT FOR SMART KEY BATTERY DRAIN
SUBJECT:
ROM ID INFORMATION TABLE:
Upgrade Event #621
Model
System
2021MY
DL3a
IBU
(Integrated Body
Control Unit)
2021MY
DL3a
(GT)
ECU P/No.
ROM ID
Previous
New
95400 L3320
95400 L3330
95400 L3340
95400 L3350
95400 L3370
95400 L3380
95400 L3410
95400 L3420
95400 L3430
95400 L3440
95400 L3460
95400 L3470
95400 L3620
95400 L3630
95400 L3650
95400 L3680
95400 L3690
95400 L3710
95400 L3321
95400 L3331
95400 L3341
95400 L3351
95400-L3371
95400 L3381
95400 L3411
95400 L3421
95400 L3431
95400 L3441
95400 L3461
95400 L3471
95400 L3621
95400 L3631
95400 L3651
95400 L3681
95400 L3691
95400 L3711
1.11
1.16
95400 L3501
95400 L3511
95400 L3521
95400 L3531
95400 L3561
95400 L3571
95400 L3581
95400 L3591
95400 L3741
95400 L3751
95400 L3781
95400 L3791
2.06
2.11
Printed TSB copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.
TSB: ELE262 (Rev 1) K5 (DL3a) September 2022
Page 4 of 10
IBU LOGIC IMPROVEMENT FOR SMART KEY BATTERY DRAIN
SUBJECT:
ROM ID INFORMATION TABLE:
Upgrade Event #621
Model
2021MY
DL3a
System
ECU P/No.
IBU
(Integrated Body
Control Unit)
95400 L3320
95400 L3330
95400 L3340
95400 L3350
95400 L3370
95400 L3380
95400 L3410
95400 L3420
95400 L3430
95400 L3440
95400 L3460
95400 L3470
95400 L3620
95400 L3630
95400 L3650
95400 L3680
95400 L3690
95400 L3710
95400 L3321
95400 L3331
95400 L3341
95400 L3351
95400 L3371
95400 L3381
95400 L3411
95400 L3421
95400 L3431
95400 L3441
95400 L3461
95400 L3471
95400 L3621
95400 L3631
95400 L3651
95400 L3681
95400 L3691
95400 L3711
ROM ID
Previous
New
1.06
1.07
1.09
1.15
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: ELE262 (Rev 1) K5 (DL3a) September 2022
Page 5 of 10
IBU LOGIC IMPROVEMENT FOR SMART KEY BATTERY DRAIN
SUBJECT:
ROM ID INFORMATION TABLE:
Upgrade Event #621
Model
System
2021MY
DL3a
(GT)
2022MY
DL3a
(GT)
2022MY
DL3a
IBU
(Integrated Body
Control Unit)
ECU P/No.
ROM ID
Previous
New
95400 L3501
95400 L3511
95400 L3521
95400 L3531
95400 L3561
95400 L3571
95400 L3581
95400 L3591
95400 L3741
95400 L3751
95400 L3781
95400 L3791
2.01
2.02
2.04
2.10
954B0 L3500
954B0 L3510
954B0 L3520
954B0 L3530
954B0 L3560
954B0 L3570
954B0 L3580
954B0 L3590
954B0 L3740
954B0 L3750
954B0 L3780
954B0 L3790
2.05
2.07
2.08
2.09
954B0 L3320
954B0 L3330
954B0 L3340
954B0 L3350
954B0 L3370
954B0 L3380
954B0 L3410
954B0 L3420
954B0 L3430
954B0 L3440
954B0 L3460
954B0 L3470
954B0 L3620
954B0 L3630
954B0 L3650
954B0 L3680
954B0 L3690
954B0 L3710
1.10
1.12
1.13
1.14
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: ELE262 (Rev 1) K5 (DL3a) September 2022
Page 6 of 10
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TSB/Document ID: TSB_ELE262_R1
Replacement Service Bulletin Number:
MFR Communication Date: 2023-02-10
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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