Kia KDS Reference manual

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.
GROUP
MODEL
ELE
2020-2021MY
Niro HEV (DE HEV)
Niro PHEV (DE PHV)
NUMBER
DATE
247
September 2021
TECHNICAL SERVICE BULLETIN
SERVICE ACTION: HCU/LDC LOGIC IMPROVEMENT
FOR P-DTC (SA484)
This bulletin provides the procedure to update the software logic of the Hybrid Control Unit/Low Voltage DC/DC
Converter (HCU/LDC) system on some 2020-2021MY Niro HEV (DE HEV) and Niro PHEV (DE PHEV) vehicles
produced in the date ranges shown below, which may incorrectly set a Power Train Diagnostic Trouble Code
(P-DTC). Follow the procedure outlined in this publication to apply the improved logic to the ‘HCULDC’ system
using the KDS ECU Upgrade function as described in this bulletin. For confirmation that the latest reflash has
been applied to a vehicle you are working on, verify the ROM ID using the table on page 2 of this bulletin.
Model
Production Date Range
Niro HEV (DE HEV)
October 20, 2020 to February 4, 2021
Niro PHEV (DE PHEV)
November 26, 2020 to January 22, 2021
SUBJECT:
A Service Action is a repair program without customer notification that is performed during the
warranty period. Any dealer requesting to perform this repair outside the warranty period will
require DPSM approval.
Repair status for a VIN is provided on WebDCS (Service → Warranty Coverage → Warranty Coverage
Inquiry → Campaign Information). Not completed Recall / Service Action reports are available on
WebDCS (Consumer Affairs → Not Completed Recall → Recall VIN → Select Report), which includes
a list of affected vehicles.
This issue number is SA484.
NOTICE
Kia Diagnostic System (KDS)

SERVICE ACTION: HCU/LDC LOGIC IMPROVEMENT FOR P-DTC (SA484)
Page 2 of 7
Printed TSB copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.
TSB: SA484 Niro HEV/PHEV (DE HEV/PHEV) September 2021
SUBJECT:
ECU Upgrade Procedure:
To correct this condition, the ECU should be reprogrammed using the KDS
download, as described in this bulletin.
ROM ID INFORMATION TABLE:
Upgrade Event #563
Model
Model
Year
System
ECU P/No.
ROM ID
Previous
New
DE HEV
2020
HCU/LDC
36600 2B190
GDEH0N6HNS0 K6D0_FF
GDEH0N6HNS0 K6D0_00
2021
36600 2B192
GDEH1N6HNS0 K6D0_FF
GDEH1N6HNS0 K6D0_00
36600 2B193
GDEH1N6HNS0 K8D0_FF
GDEH1N6HNS0 K8D0_00
36600 2B592
GDEH1N6HNS0 K6N0_FF
GDEH1N6HNS0 K6N0_00
DE PHEV
2020
36600 2B195
GDEP0N6HNS0 K600_FF
GDEP0N6HNS0 K600_00
2021
36600 2B196
GDEP1N6HNS0 K600_FF
GDEP1N6HNS0 K600_00
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.
Upgrade Event Name
563. DE PE HEV/PHEV HCULDC P-DTC IMPROVEMENT
•
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.
NOTICE
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.
IMPORTANT
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.


Page 3 of 7
Printed TSB copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.
TSB: SA484 Niro HEV/PHEV (DE HEV/PHEV) September 2021
SERVICE ACTION: HCU/LDC LOGIC IMPROVEMENT FOR P-DTC (SA484)
SUBJECT:
Connect the VCI-II to the OBD-II connector,
located under the driver’s side of the
instrument panel.
With the ignition ON, turn ON the KDS tablet.
Select ‘KDS’from the home screen.
Confirm communication with VCI (A) and then
configure the vehicle (B) using the ‘AUTO VIN’
(C) feature.
Select ‘ECU Upgrade’.
Prior to performing the ECU upgrade, be sure to check that the KDS is fully charged.
NOTICE
The ECU upgrade function on KDS
operates wirelessly. It is not necessary
to perform the upgrade via USB cable.
NOTICE
A
B
C

SERVICE ACTION: HCU/LDC LOGIC IMPROVEMENT FOR P-DTC (SA484)
Page 4 of 7
Printed TSB copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.
TSB: SA484 Niro HEV/PHEV (DE HEV/PHEV) September 2021
SUBJECT:
The KDS will check the server for recently
uploaded Events and then automatically
download Upgrade Event #563.
Select Auto Mode.
Select the ‘HCULDC’ system under the System
selection menu.
Touch ID Check (D) and confirm that the latest
update is available.
Select Upgrade Event #563 and select Upgrade
to continue.
The ECU upgrade will begin and the progress
of the upgrade will appear on the bar graph.
Upgrade part (1/2) (E) will download the
upgrade event to the VCI-II. Upgrade part (2/2)
(F) will upgrade the ECU.
KDS screenshot shown above is for
demonstration purposes only. Events shown in
screenshot are not applicable to this bulletin.
The vehicle must be identified in
Vehicle Selection to download an
Event for that vehicle.
NOTICE
Do NOT attempt to perform a Manual
Mode upgrade UNLESS Auto Mode
fails. Always follow the instructions
given on the KDS in either Auto or
Manual mode.
CAUTION
Do not touch the system buttons (like
‘Back’, ‘Home’, ‘etc.’) while
performing ECU Upgrade.
CAUTION
E
F
D

Page 5 of 7
Printed TSB copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.
TSB: SA484 Niro HEV/PHEV (DE HEV/PHEV) September 2021
SERVICE ACTION: HCU/LDC LOGIC IMPROVEMENT FOR P-DTC (SA484)
SUBJECT:
If a “Communication Fail” screen appears, verify
that the VCI-II and KDS are communicating
properly. Select ‘OK’ and restart the procedure
from step 4.
When instructed on the KDS, turn the ignition
OFF for ten (10) seconds then back on. Select
‘OK’ to continue.
Once the upgrade is complete, select ‘OK’ to
finalize the procedure.
When prompted, select ‘YES’ to check for
Diagnostic Trouble Codes (DTC) and erase any
DTCs stored such as EPS, ESC, and TPMS that
may have been set during the upgrade.
Start the engine to confirm normal operation of
the vehicle.
If an error notice continues to appear
or if the upgrade cannot be
performed, DO NOT disconnect the
KDS/VCI-II. Contact GIT America Help
Desk at [phone] or Techline.
NOTICE

SERVICE ACTION: HCU/LDC LOGIC IMPROVEMENT FOR P-DTC (SA484)
Page 6 of 7
Printed TSB copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.
TSB: SA484 Niro HEV/PHEV (DE HEV/PHEV) September 2021
SUBJECT:
Manual Upgrade Procedure:
Manual Mode ECU Upgrade Passwords
Menu
Password
DE PE HEV HCULDC 20MY: 36600-2B190
2190
DE PE HEV HCULDC 21MY: 36600-2B192
2192
DE PE HEV HCULDC 21MY: 36600-2B193
2193
DE PE HEV HCULDC 21MY: 36600-2B592
2592
DE PE PHEV HCULDC 20MY: 36600-2B195
2195
DE PE PHEV HCULDC 21MY: 36600-2B196
2196
Within the ECU Upgrade screen displayed, select Manual Mode.
Select the ‘HCULDC’ system under the System selection menu. Select Upgrade Event #563 and select
Upgrade to continue.
Select the appropriate control unit part number with reference to the ROM ID Information Table on
page 2, and select OK.
Enter the appropriate password from the Manual Mode password table above and select OK.
The upgrade will begin and the progress of the upgrade will appear on the bar graph.
When instructed on the KDS, turn the ignition OFF for ten (10) seconds then back on. Select OK.
Once the upgrade is complete, select OK to finalize the procedure.
When prompted, select YES to check for Diagnostic Trouble Codes (DTC) and erase any DTCs stored
such as EPS, ESC, and TPMS that may have been set during the upgrade.
Start the engine to confirm proper operation of the vehicle.
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.
NOTICE

Page 7 of 7
Printed TSB copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.
TSB: SA484 Niro HEV/PHEV (DE HEV/PHEV) September 2021
SERVICE ACTION: HCU/LDC LOGIC IMPROVEMENT FOR P-DTC (SA484)
SUBJECT:
AFFECTED VEHICLE RANGE:
Model
Production Date Range
Niro HEV (DE HEV)
October 20, 2020 to February 4, 2021
Niro PHEV (DE PHEV)
November 26, 2020 to January 22, 2021
REQUIRED TOOL:
Tool Name
Figure
Comments
KDS
Kia Diagnostic System
WARRANTY INFORMATION:
N Code: N99 C Code: C99
Model
Claim
Type
Causal
P/N
Qty.
Repair
Description
Labor Op
Code
Op
Time
Replacement
P/N
Qty.
DE HEV
V
36600
2B190
0
(SA484)
HCU/LDC Logic
Improvement
210101R0
0.5
M/H
N/A
0
DE PHEV
VIN inquiry data for this repair is provided for tracking purposes only. Kia retailers should reference
SA484 when accessing the WebDCS system.
NOTICE