Kia KDS User 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)

Kia KDS Specifications

General

Software	Kia Diagnostic Software
Category	Diagnostic Equipment
Compatibility	Kia Vehicles
Display	Touchscreen
Connectivity	USB, Bluetooth, Wi-Fi
Protocols Supported	CAN, OBD-II
Manufacturer	Kia
Model	KDS
Function	Vehicle Diagnostics
Software Updates	Via Wi-Fi

Summary

Kia Niro HCU/LDC Software Logic Improvement (SA484)

Kia Niro Models and Production Dates for SA484

Details the specific Kia Niro HEV/PHEV models and production date ranges affected by service action SA484.

Step-by-Step ECU Software Update Guide

Comprehensive guide to update the HCU/LDC system software using the KDS diagnostic tool for Niro vehicles.

Manual Mode ECU Upgrade for Niro Vehicles

Instructions and passwords for performing the ECU upgrade manually when the automatic method fails.

Kia Diagnostic System (KDS) for Software Updates

Identifies the Kia Diagnostic System (KDS) as the essential tool required for performing the ECU software upgrade.

Warranty Claim Details for HCU/LDC Logic Improvement

Provides necessary warranty information including claim codes, labor operation, and time for the SA484 service action.