NHTSA ID Number: 11032592
Manufacturer Communication Number: 26-01-044H TSB
TSB/Document Date: 2026-05-12
Summary
Certain Santa Cruz (NXT) vehicles may experience Over-the-Air (OTA) update failures due to outdated Central Communication Unit (CCU) software. This bulletin provides instructions to perform a software update for the CCU.
GROUP
NUMBER
CAMPAIGN
DATE
Technical Service Bulletin
26-01-044H
MODEL(S)
MAY 2026
SANTA CRUZ (NXT)
CCU SOFTWARE UPDATE FOR OTA INITIALIZATION
(LIMITED COVERAGE CAMPAIGN LA26)
SUBJECT:
IMPORTANT
Dealers must perform this field action on all affected vehicles within 5 /60,000 New Vehicle Limited
Warranty (NVLW) prior to customer retail delivery and whenever an affected vehicle is in the shop
for any maintenance or repair. See Warranty Information section for more details.
Access the “Vehicle Information” screen via WebDCS to verify “Warranty Start Date” and ensure the
vehicle is within NVLW, observing mileage prior to any repair work.
Description: Certain Santa Cruz (NXT) vehicles may experience Over-the-Air (OTA) update failures
due to outdated Central Communication Unit (CCU) software. This bulletin provides instructions to
perform a software update for the CCU.
Applicable Vehicles (Certain):
Model Year
Model
Production Dates
2025 – 2026
Santa Cruz (NXT)
06/04/2025 – 03/24/2026
SST Information:
Tool Name
Tool Number
VCI 3
G0VHNNN06
19-Pin Cable
Figure
Remarks
+
VCI 3 comes with
the 19-pin cable
(P/N G1XDDCA020
included here
for reference)
G1XDDCA020
Ordering Information
Website:
https://hyundaiessentialtools.com/
Email:
[email protected]
VCI 2
Ethernet
Communication
Interface (ECI)
Kit
G1XDDMN001
+
G0XDDMN052
If using VCI 2, the
ECI Kit will be
required to
complete software
updates.
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 updates in this TSB.
Circulate To: General Manager, Service Manager, Parts Manager, Warranty Manager, Service
Advisors, Technicians, Body Shop Manager, Fleet Repair
CCU SOFTWARE UPDATE FOR OTA INITIALIZATION
(LIMITED COVERAGE CAMPAIGN LA26)
SUBJECT:
GDS Information:
Model
System
Event Number*
Description
CCU_CCNF
1418
NX4a(OB) CCU LOGIC ENHANCEMENT (AP)
CCU_CGW
1419
NX4a(OB) CCU LOGIC ENHANCEMENT (MCU)
Santa Cruz (NXT)
(*or use a later available event listed in the GDS CCU_CGW and CCU_CCNF Update screen if one is
available.)
Warranty Information:
Model
Op. Code
Operation
Op. Time
Causal Part
Nature
Code
Cause
Code
Santa Cruz
CCU Software Update
60DA08R0
0.4 M/H
91920-N7000
I14
ZZ3
(NXT)
(AP / MCU)
NOTE 1: Submit claim on Claim Entry Screen as "Campaign" type.
NOTE 2: 5 /60,000 New Vehicle Limited Warranty (NVLW) applies to the part(s) and repair
procedure(s) outlined in this TSB. Prior to beginning any repair work, ensure the part(s) associated
with the repair procedure are within NVLW, observing mileage and Warranty Start Date or date of first
use. If the subject part(s) 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: 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 4: This TSB includes repair validation photos. Op times include VIN, mileage, and photo
capture of the ECU Update “Success” screen as outlined in the Digital Documentation Policy.
ROM ID Information:
Model
Santa
Cruz
(NXT)
Event
System
1418
CCU_CCNF
ECU
Part Number
Software
ROM ID
Current
Latest
UNIT1
(AP)
1.33.43
1.33.53
1.33.67
UNIT3
(MCU)
1.33.19
1.33.23
1.33.25
91920-N7000
1419
TSB #: 26-01-044H
CCU_CGW
Page 2 of 10
SUBJECT:
CCU SOFTWARE UPDATE FOR OTA INITIALIZATION
(LIMITED COVERAGE CAMPAIGN LA26)
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 12.5 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 start the engine during the update.
•
Do NOT turn OFF the ignition switch during the update.
TSB #: 26-01-044H
Page 3 of 10
SUBJECT:
CCU SOFTWARE UPDATE FOR OTA INITIALIZATION
(LIMITED COVERAGE CAMPAIGN LA26)
Configuration of Ethernet Communication on Tablet
i
Information
Refer to TSB 23-GI-006H for detailed information on configuring Ethernet communication for
setup.
1.
Connect the Ethernet Communication
Interface (ECI) DLC cable to the OBD
connector of the vehicle.
2.
Connect the VCI DLC cable to the ECI.
3.
Select the appropriate tablet cable
(type C, 5-pin) to the ECI.
4.
Connect the cable to the tablet PC.
i
Information
VCI 2: Connect the GDS tablet to the VCI 2 using the ECI Kit.
VCI 3: Connect the GDS tablet to the vehicle using the 19-pin cable.
TSB #: 26-01-044H
Page 4 of 10
CCU SOFTWARE UPDATE FOR OTA INITIALIZATION
(LIMITED COVERAGE CAMPAIGN LA26)
SUBJECT:
CCU Update Procedure – Event 1418 (AP)
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
CCU_CCNF system to scan the vehicle’s
current ROM ID.
NOTICE
Check the current ROM ID version and
compare it to the ROM ID Information
table before attempting to perform the
software update.
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 #: 26-01-044H
Page 5 of 10
CCU SOFTWARE UPDATE FOR OTA INITIALIZATION
(LIMITED COVERAGE CAMPAIGN LA26)
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.
OTA initialization (A) should perform
automatically:
• If OTA initialization performs
automatically, then proceed with the
service procedure.
•
A
If the OTA initialization process fails,
complete it manually under:
S/W Management > CCU_CCNF Central Communication Unit (CCNF)
> OTA Initialization (B).
Follow the instructions on the screen.
B
TSB #: 26-01-044H
Page 6 of 10
SUBJECT:
5.
CCU SOFTWARE UPDATE FOR OTA INITIALIZATION
(LIMITED COVERAGE CAMPAIGN LA26)
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.
6.
Perform an All Systems Fault Code search
and erase DTC history that had incidentally
occurred from the ECU update.
7.
Proceed to CCU Update Procedure - Event
1419 (MCU) to perform the next update.
TSB #: 26-01-044H
Page 7 of 10
CCU SOFTWARE UPDATE FOR OTA INITIALIZATION
(LIMITED COVERAGE CAMPAIGN LA26)
SUBJECT:
CCU Update Procedure – Event 1419 (MCU)
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
CCU_CGW system to scan the vehicle’s
current ROM ID.
NOTICE
Check the current ROM ID version and
compare it to the ROM ID Information
table before attempting to perform the
software update.
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 #: 26-01-044H
Page 8 of 10
CCU SOFTWARE UPDATE FOR OTA INITIALIZATION
(LIMITED COVERAGE CAMPAIGN LA26)
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.
OTA initialization (A) should perform
automatically:
• If OTA initialization performs
automatically, then proceed with the
service procedure.
•
A
If the OTA initialization process fails,
complete it manually under:
S/W Management > CCU_CCNF Central Communication Unit (CCNF)
> OTA Initialization (B).
Follow the instructions on the screen.
B
TSB #: 26-01-044H
Page 9 of 10
SUBJECT:
5.
CCU SOFTWARE UPDATE FOR OTA INITIALIZATION
(LIMITED COVERAGE CAMPAIGN LA26)
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.
6.
Perform an All Systems Fault Code search
and erase DTC history that had incidentally
occurred from the ECU update.
7.
Start the engine to confirm proper operation of
the vehicle.
8.
The service procedure is now complete.
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
1418
NX4a(OB) CCU 91920-N7000/500 (AP)
9192
1419
NX4a(OB) CCU 91920-N7000/500 (MCU)
0291
TSB #: 26-01-044H
Page 10 of 10
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TSB/Document ID: 26-01-044H TSB
Replacement Service Bulletin Number:
MFR Communication Date: 2026-05-08
MFR Internal Campaign ID/Software Version: LA26
Communication Type: Warranty Program/Extension
NHTSA Components: ELECTRICAL SYSTEM
MFR Component System:
MFR Component Subsystem:
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