GROUP

NUMBER

CAMPAIGN
DATE

Technical Service Bulletin
SUBJECT:

23-01-039H
MODEL(S)

JUNE 2023

Ioniq 5 Electric
(NE1)

VCU UPDATE AND OWNER’S MANUAL SUPPLEMENT (CAMPAIGN TAF)

 IMPORTANT
Dealers must perform this Service Campaign on all affected vehicles prior to customer retail
delivery and whenever an affected vehicle is in the shop for any maintenance or repair.
Access the “Vehicle Information” screen via WEBDCS to identify open campaigns.
Description: This bulletin applies the following continuous improvements from a Vehicle Control Unit
(VCU) Software Update. An “Owner’s Manual Supplement” leaflet is to be provided to 2022MY
vehicle customers to explain the change it makes to the Electronic Parking Brake (EPB) system.
(NOTE: 2023MY vehicle Owner’s Manual already contains the EPB supplement content).
• Enhance i-Pedal mode operation.
• EPB (Electronic Parking Brake) auto engagement when shift into Park/auto disengagement shift
out of Park when shifting to D or R while brake pedal is engaged.
• DTE (Distance to Empty) strategy.
• Snow road surface performance.
• Air conditioning performance during AC slow charging.
• Enhance charging sequence.
Applicable Vehicles (Certain): 2022-2023MY IONIQ 5 Electric (NE1) vehicles produced from
10/04/2021 - 03/02/2023

NOTICE
This service campaign can only be performed at certified IONIQ 5 Hyundai dealers.
Parts Information:
Part Name

OWNER’S
MANUAL
SUPPLEMENT
(EPB)

GDS Information:
System
Event #
VCU
935*

Part Number

Remarks.

PGIOE-U32A
QQH

Use only for
2022MY
vehicles

Description
NE VCU IMPROVEMENT

Circulate To: Service Manager, Warranty Manager, Service Advisors, Technicians, Fleet Repair

VCU UPDATE AND OWNER’S MANUAL SUPPLEMENT (CAMPAIGN TAF)

SUBJECT:

* or select the latest available Event # that displays in GDS.
Warranty Information:
MY/MODEL

OP CODE

OP NAME

22MY Ioniq 5
Electric (NE1)

20D123R1

VCU UPDATE
WITH LEAFLET

0.7 M/H

39751-1XNN1

I11

ZZ3

23MY Ioniq 5
Electric (NE1)

20D123R0

VCU UPDATE
(NO LEAFLET)

0.7 M/H

39751-1XNN1

I11

ZZ3

0.3 M/H

39751-1XNN1

I11

ZZ3

22-23MY
Ioniq 5
Electric (NE1)

OP TIME CAUSAL PART NATURE

CAUSE

INSPECTION
ONLY
20D123R3 (23MY - NO

LEAFLET.
22MY - PROVIDE
LEAFLET.)

NOTE 1: Op time includes VIN, Mileage, and photo capture of the “ECU Update Complete” screen.
NOTE 2: Submit claim on Claim Entry Screen as "Campaign" type.
NOTE 3: If a part that is not covered by this TSB needs replacement while performing this service
campaign, and the affected part is still under warranty, please submit a separate claim using the
same repair order. If the part is out of warranty, submit a prior approval request for goodwill
consideration prior to performing the work.

Service Procedure:

STUI
As outlined in the Digital Documentation Policy, all claims require VIN and Mileage validation
through VCI connection or photo capture, AND photo capture of the “ECU Update Complete”
screen. All claims submitted that have incomplete, illegible, or missing documentation
are subject to debit.
1. For 22MY Vehicles only: Attach the Owner’s Manual Supplement (EPB) leaflet listed in the Parts
Information section on top of the Repair Order. Inform the Service Advisor to explain and provide
it to the customer.
2. Perform the VCU Update in Auto Mode.
a) Use the Auto Mode ID Check to verify the VCU ROM ID before updating the software.

i Information
If the VCU Update Event 935 does not appear, shows as “not applicable” or
“already completed”, then the VCU Update cannot be performed. In such case,
select the appropriate opcode 20D123R3.

TSB #: 23-01-039H

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SUBJECT:

VCU UPDATE AND OWNER’S MANUAL SUPPLEMENT (CAMPAIGN TAF)

! WARNING
GDS Vehicle Battery Voltage:
• This VCU Update is long, so the 12V battery must be at good charge level (>60%
SOC).
• If the voltage is below 12 volts as per the GDS warning, then select Back and run
the vehicle at least 30 minutes to reach an adequate battery state of charge to
prevent an ECU Update failure. Cycle the ignition OFF/ON before retrying ECU
update again.

i Information
GDS ECU Updates must be performed in Auto Mode.
• If ECU Update starts but then fails in Auto Mode, perform update in Manual Mode
to recover.
• Turn off ignition for 30 seconds and try Manual Mode recovery.
• If unsuccessful, re-attempt Manual Mode after disconnecting the cables from the
12V battery terminals and performing cap discharge (connecting bar or heavy wire
between “+” to “-“ cables).
b) After the ECU Upgrade process shows 100% complete, cycle the ignition key to OFF for at
least 10 seconds to reset the control unit.

TSB #: 23-01-039H

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VCU UPDATE AND OWNER’S MANUAL SUPPLEMENT (CAMPAIGN TAF)

SUBJECT:

c) Take a screenshot of the ECU Update complete screen and upload to STUI.

STUI
Take a screenshot of the ECU Update
Complete screen using your particular
tablet’s screenshot save method and
upload to STUI.

EXAMPLE

3. Perform an All Systems Fault Code search and erase the history of the DTC that had incidentally
occurred from the ECU update.
4. Start the vehicle in Ready mode to confirm a proper operation of the vehicle.
ROM ID Table:
VEHICLE SYSTEM

MY

VCU P/No.

39751-1XNN1
IONIQ5
ELECTRIC
(NE1)

VCU

22-23MY

39751-1XNN4

ROM ID
OLD
NE1A-N0-S07-V300
NE1A-N0-SB0-V400
NE1A-N0-SB1-V400
NE1A-N0-SB2-V400
NE1A-N0-SB3-V400
NE1A-N0-SD2-V400
NE1A-N0-KB0-V200
NE1A-N0-KB1-V200
NE1A-N0-KB2-V200
NE1A-N0-KB3-V200
NE1A-N0-KD2-V200
NE1A-N2-S17-V300

NEW

NE1A-N0-SB5-V400

NE1A-N0-KB5-V200

Manual Mode Password:
MENU

PASSWORD
1054
1052

NE1 VCU 39751-1XNN1
NE1 VCU 39751-1XNN4

TSB #: 23-01-039H

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