NHTSA ID Number: 11027787
Manufacturer Communication Number: 26-01-009H TSB
TSB/Document Date: 2026-01-27
Summary
Certain IONIQ 5 N (NE EV N) vehicles are equipped with a Left Foot Braking (LFB) feature designed for use on performance roadways, such as racetracks. This bulletin provides instructions to update the Vehicle Control Unit (VCU) software to retain the LFB feature or remove it based on the customer’s preference. Regardless of whether the feature is retained or removed, this VCU update must be completed on all vehicles to ensure the proper ROM ID path for future VCU updates, and, in the case of LFB removal, a sticker must be applied in the owner’s manual to indicate the vehicle is not equipped with the LFB feature. The customer’s consent to retain or remove the feature must be documented following the process outlined in this bulletin prior to applying the VCU update to the vehicle.
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TSB/Document ID: 26-01-009H TSB
Replacement Service Bulletin Number:
MFR Communication Date: 2026-01-23
MFR Internal Campaign ID/Software Version: 9C6
Communication Type: Service Campaign
NHTSA Components: SERVICE BRAKES
MFR Component System:
MFR Component Subsystem:
Previous TSB | Next TSB |
GROUP
NUMBER
CAMPAIGN
Technical Service Bulletin
SUBJECT:
DATE
26-01-009H
MODEL(S)
JANUARY 2026
IONIQ 5 N (NE EV N)
REMOVE/RETAIN LEFT FOOT BRAKING (LFB) FEATURE VCU SOFTWARE UPDATE (SERVICE CAMPAIGN 9C6)
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.
TECHNICIAN MUST CONSULT WITH THE SERVICE ADVISOR AND CAPTURE A PHOTO OF
THE SIGNED LFB OWNER CONSENT FORM BEFORE PROCEEDING WITH THE SERVICE
PROCEDURE.
Access the “Vehicle Information” screen via WebDCS to identify open campaigns.
Description: Certain IONIQ 5 N (NE EV N) vehicles are equipped with a Left Foot Braking (LFB) feature
designed for use on performance roadways, such as racetracks. This bulletin provides instructions to
update the Vehicle Control Unit (VCU) software to retain the LFB feature or remove it based on the
customer’s preference. Regardless of whether the feature is retained or removed, this VCU update
must be completed on all vehicles to ensure the proper ROM ID path for future VCU updates, and, in
the case of LFB removal, a sticker must be applied in the owner’s manual to indicate the vehicle is not
equipped with the LFB feature. The customer’s consent to retain or remove the feature must be
documented following the process outlined in this bulletin prior to applying the VCU update to the
vehicle.
Applicable Vehicles (Certain):
Model Year
Model
Production Dates
2025
IONIQ 5 N (NE EV N)
12/18/2023 – 03/10/2025
NOTICE
To avoid any potential damage to IONIQ vehicles, this service campaign can only be performed
at IONIQ certified dealers.
i
Information
A completed and signed vehicle owner consent form is required on all claims. The form can be
printed from this TSB on page 5.
Circulate To: General Manager, Service Manager, Parts Manager, Warranty Manager, Service
Advisors, Technicians, Body Shop Manager, Fleet Repair
REMOVE/RETAIN LEFT FOOT BRAKING (LFB) FEATURE VCU SOFTWARE UPDATE (SERVICE CAMPAIGN 9C6)
SUBJECT:
Parts Information:
Model
Part Name
Part Number
Figure
Remarks
Qty: 1 each
Service Campaign
9C6 LFB
Owners Manual
IONIQ 5 N
(NE EV N)
This sticker is
needed if owner
elects to REMOVE
the LFB feature.
NP001-SC9C6
This sticker is not
needed if owner
elects to KEEP
the LFB feature
SST Information:
Tool Name
Tool Number
VCI 3
G0VHNNN06
Figure
Ordering Information
Website:
https://hyundaiessentialtools.com/
Email:
Hyundaitools@snapon.com
VCI 2
G1XDDMN001
Phone: 1-855-763-9199
Hours: 7 AM – 7 PM CST
NOTE: VCI 2 can NO longer be ordered but can be used for the update in this TSB.
GDS Information:
Model
IONIQ 5 N
(NE EV N)
System
Event
Number
Description
Note
1327
NE N LFB FUNCTION REMOVAL AND
12V BATTERY CHARGING IMPROVEMENT
VCU UPGRADE
Remove LFB
1326
NE N LFB FUNCTION RETENTION AND
12V BATTERY CHARGING IMPROVEMENT
VCU UPGRADE
Retain LFB
VCU
TSB #: 26-01-009H
Page 2 of 12
REMOVE/RETAIN LEFT FOOT BRAKING (LFB) FEATURE VCU SOFTWARE UPDATE (SERVICE CAMPAIGN 9C6)
SUBJECT:
Warranty Information:
Model
Op. Code
Operation
50D157R0
VCU Software Update
LFB Removal (#1327)
IONIQ 5 N
(NE EV N)
50D157R1
Op.
Time
Causal Part
Nature
Code
Cause
Code
0.4
M/H
39751-1XPN1
I14
ZZ3
VCU Software Update
LFB Retention (#1326)
NOTE 1: Submit claim on Claim Entry Screen as “Campaign” type.
NOTE 2: If any part(s) not subject to this TSB are found in need of replacement while performing the
repair procedure, and the affected part(s) are still under warranty, the dealer may submit a separate
claim using the same repair order. If the part(s) not subject to this TSB are out of warranty coverage,
the dealer has the option to submit a PA Request for goodwill consideration on a case-by-case basis.
NOTE 3: This TSB includes repair validation photos. Op times include VIN, Mileage, and repair
validation photos as outlined in the Digital Documentation Policy.
ROM ID Information:
Model
Event
Note
1327
Remove
LFB
IONIQ 5 N
(NE EV N)
System
VCU
1326
TSB #: 26-01-009H
Retain
LFB
ECU
Part Number
39751-1XPN1
ROM ID
Current
Latest
NE1N-45E-N03-S00
NE1N-45E-N03-S01
NE1N-45E-N03-S02
NE1N-45E-N03-S03
NE1N-45E-N03-S05
NE1N-45E-N03-S08
NE1N-45E-N03-S20
Page 3 of 12
SUBJECT:
REMOVE/RETAIN LEFT FOOT BRAKING (LFB) FEATURE VCU SOFTWARE UPDATE (SERVICE CAMPAIGN 9C6)
Service Procedure:
DIGITAL DOCUMENTATION
This TSB includes repair validation photos. Refer to the latest Warranty Digital Documentation
Policy for requirements.
NOTICE
You must initially perform the GDS ECU update in Auto Mode.
• If the ECU update starts but then fails in Auto Mode, perform the update in Manual Mode
to recover.
NOTICE
Ensure the vehicle’s battery charge is above 11.0 Volts and the tablet’s battery charge is above
30% before performing a software update to avoid update failure.
i
Information
•
Turn OFF all lamps (do NOT leave head lamp switch in auto mode) and all accessories.
•
Perform update with the ignition switch in the ON position.
•
Do NOT disconnect any cables connected to the vehicle or scan tool during the update.
•
Do NOT place in Ready mode during the update.
•
Do NOT turn OFF the ignition switch during the update.
Table of Contents
•
Vehicle Owner Consent Form .................................................................................................. 5
•
Flowchart.................................................................................................................................. 6
•
Confirmation to Remove or Retain LFB.................................................................................... 7
•
ECU Update Procedure to Remove or Retain LFB .................................................................. 8
•
Owner’s Manual Sticker Placement ....................................................................................... 11
TSB #: 26-01-009H
Page 4 of 12
Vehicle Owner Consent Form
Circulate To: General Manager, Service Manager, Parts Manager, Warranty Manager, Service
Advisors, Technicians, Body Shop Manager, Fleet Repair
SUBJECT:
REMOVE/RETAIN LEFT FOOT BRAKING (LFB) FEATURE VCU SOFTWARE UPDATE (SERVICE CAMPAIGN 9C6)
Flowchart
TSB #: 26-01-009H
Page 6 of 12
SUBJECT:
REMOVE/RETAIN LEFT FOOT BRAKING (LFB) FEATURE VCU SOFTWARE UPDATE (SERVICE CAMPAIGN 9C6)
Confirmation to Remove or Retain LFB
1.
Consult with the Service Manager to confirm if
the vehicle owner would like to retain or
remove the Left Foot Braking (LFB) feature.
2.
Obtain the completed and signed vehicle
owner consent form from the Service
Manager.
3.
DIGITAL
DOCUMENTATION
Using the STUI camera function, take a
photo of the completed and signed
vehicle owner consent form. The photo
should cleary show the choice selection
and signatures of the customer and
Service Manager.
Upload the photo to STUI.
NOTE: If the STUI camera function is
NOT used, write the last 6 digits of the
VIN and date of repair on a piece of
paper to include in the photo.
4.
Proceed to the ECU Update Procedure to
Remove or Retain LFB on page 8.
TSB #: 26-01-009H
Page 7 of 12
REMOVE/RETAIN LEFT FOOT BRAKING (LFB) FEATURE VCU SOFTWARE UPDATE (SERVICE CAMPAIGN 9C6)
SUBJECT:
ECU Update Procedure to Remove or Retain LFB
1.
Perform the ECU update in Auto Mode.
i
Information
Refer to TSB # 25-GI-011H, “ECU
Update Procedure for Tablet-Based
GDS-Smart”, for additional information.
2.
Verify the ROM ID by selecting the VCU
system to scan the vehicle’s current ROM ID.
•
If the owner has elected to remove the
LFB feature, select event # 1327 (A).
•
If the owner has elected to retain the LFB
feature, select event # 1326 (B).
NOTICE
A
B
Make the selection carefully. If the LFB
feature is removed, it CANNOT be
reversed.
NOTICE
Check the current ROM ID version and
compare it to the ROM ID Information
table before attempting to perform the
software update.
NOTICE
If the update fails, remove the power
connector from the in-cabin fuse box for
at least 5 seconds. Reassemble and
retry the update.
TSB #: 26-01-009H
Page 8 of 12
REMOVE/RETAIN LEFT FOOT BRAKING (LFB) FEATURE VCU SOFTWARE UPDATE (SERVICE CAMPAIGN 9C6)
SUBJECT:
3.
After the ECU update process shows 100%
complete, follow the prompts on the screen to
cycle the ignition OFF for at least 10 seconds
to reset the control unit (certain models may
take up to 30 seconds).
i
Information
Use the Refresh button to reset the
timer.
4.
DIGITAL
DOCUMENTATION
Using the tablet or GDS screen capture
function, take a screenshot of the ECU
Update “Success” result screen.
Upload the photo to STUI.
NOTE: The VIN/Date/Time/Mileage photo
imprint is NOT required for GDS
screenshots.
TSB #: 26-01-009H
Page 9 of 12
SUBJECT:
REMOVE/RETAIN LEFT FOOT BRAKING (LFB) FEATURE VCU SOFTWARE UPDATE (SERVICE CAMPAIGN 9C6)
5.
Perform an All Systems Fault Code search
and erase DTC history that had incidentally
occurred from the ECU update.
6.
Place the vehicle in Ready mode to confirm
proper operation.
7.
If the owner elected to retain the LFB feature,
the service procedure is now complete.
If the owner elected to remove the LFB
feature, proceed to the Owner’s Manual
Sticker Placement procedure on page 11.
NOTICE
If the ECU update fails in Auto Mode, perform the update in Manual Mode using the password(s)
below.
Manual Mode Password:
Event
Menu
Password
1326
NE N VCU 39751-1XPN1 (RETENTION)
0466
1327
NE N VCU 39751-1XPN1(REMOVAL)
9888
TSB #: 26-01-009H
Page 10 of 12
REMOVE/RETAIN LEFT FOOT BRAKING (LFB) FEATURE VCU SOFTWARE UPDATE (SERVICE CAMPAIGN 9C6)
SUBJECT:
Owner’s Manual Sticker Placement
1.
Locate the owner’s manual in the vehicle.
i
Information
If owner’s manual is NOT present,
provide the customer the sticker and
consult them on sticker placement
referencing the following steps.
2.
Open the manual to the Left Foot Braking
section on page 6-59.
3.
Remove the backing from the sticker.
TSB #: 26-01-009H
Page 11 of 12
SUBJECT:
4.
REMOVE/RETAIN LEFT FOOT BRAKING (LFB) FEATURE VCU SOFTWARE UPDATE (SERVICE CAMPAIGN 9C6)
Apply the sticker to the page so that it covers
the Left Foot Braking information.
DIGITAL
DOCUMENTATION
Using the STUI camera function, take a
photo of the sticker covering the LFB
section.
Upload the photo to STUI.
NOTE: If the STUI camera function is
NOT used, write the last 6 digits of the
VIN and date of repair on a piece of
paper to include in the photo.
NOTE: If the owner’s manual is NOT with
the vehicle and a captured image of the
applied sticker is not possible, provide a
capture of the printed RO with the sticker
for presentation to the customer.
5.
Return the owner’s manual to its original
location.
6.
The service procedure is now complete.
TSB #: 26-01-009H
Page 12 of 12
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