Ecu Update Procedure For Tablet-Based GDS-Smart (25-GI-011H)

Publication date: 2025-05-01
Reference number: 25-GI-011H
Supersedes refnos: 15-GI-001, 24-GI-012H

ECU UPDATE PROCEDURE FOR TABLET-BASED GDS-SMART

TECHNICAL SERVICE BULLETIN

Reference Number(s): 25-GI-011H, Date of Issue: May 01, 2025

HYUNDAI:	All Models
GROUP:	GENERAL INFORMATION

Superceded Bulletin(s): 24-GI-012H, Date of Issue: May 01, 2025

REVISION HISTORY

This TSB supersedes 24-GI-012H to add a procedure, "Accessing Historical GDS Data Using e-Report Function", on page 12.

DESCRIPTION

This bulletin provides instructions for completing ECU updates with the tablet-based ' GDS-Smart. Refer to each specific ECU Update TSB for:

Vehicle Information
GDS Event Information
Warranty Information
ROM ID Information
Manual Mode Password Information

This bulletin contains general instructions and does not specifically apply to other ECU Update TSBs.

Applicable Vehicles: All models

NOTE: To avoid any potential damage to IONIQ vehicles, IONIQ repairs can only be performed at IONIQ certified dealers.

SST INFORMATION (NON-ETHERNET ENABLED UPDATE)

SST INFORMATION

Tool Name	Tool Number	Figure	Ordering Information
VCI 3	G0VHNNN06		Website:https://hyundaiessentialtools.com/ Email:Hyundaitools@snapon.com Phone: 1-855-763-9199 Hours: 7 AM - 7 PM CST
VCI 2	G1XDDMN001

SST INFORMATION (ETHERNET ENABLED UPDATE)

SST INFORMATION

Tool Name	Tool Number	Remarks	Ordering Information
VCI 3	G0VHNNN06	VCI 3 comes with the 19-pin cable (P/N G1XDDCA020 included here for reference)	Website:https://hyundaiessentialtools.com/ Email:Hyundaitools@snapon.com Phone: 1-855-763-9199 Hours: 7 AM - 7 PM CST
19-Pin Cable	G1XDDCA020
VCI 2	G1XDDMN001	If using VCI 2, the ECI Kit will be required to complete software updates.
Ethernet Communication Interface (ECI) Kit	G0XDDMN052

GENERAL ECU UPDATE SERVICE PROCEDURE

NOTE: The GDS-Smart diagnostic software requires the tablet battery charge level to be above 25%. If the charge level is not above 25%, charge the tablet before proceeding with the ECU update function. The software will not allow the function to be executed without an adequate charge level.
Ensure the vehicle 12V battery state-of-charge is sufficient prior to executing an ECU update. If the state-of-charge is below 12V, attach a battery charger to ensure an adequate voltage level for reliable update results.
An insufficient vehicle battery charge may result in a failure when updating and damage to the ECU which may cause the claim to be denied.

Information

Turn OFF all lights (Turn OFF headlight switch auto mode) and accessories (heater/air conditioner/fan, audio, heated seats, rear defroster, etc.) prior to the ECU Update to ensure the battery will not discharge.

Ignition is to remain ON during the entire ECU update process.

Do NOT start the engine or turn the ignition switch OFF during the update.

If the required event does NOT populate in the event list, then install the latest version of GDS-Smart.

To resolve issues with GDS-Smart, contact the GITA call center for support at: (888) 437-0308 .

GDS-SMART VEHICLE CONNECTION

Connect the VCI 2 or VCI 3 to the vehicle's DLC (located under the driver's side dash)
Turn ignition ON .
- Do NOT start the engine (for gasoline engine only-Non-EV/HEV/PHEV/Fuel cell)
- Do NOT place vehicle in "Ready Mode" (for EV/HEV/PHEV/Fuel Cell)
Launch the STUI application.
Connect to the VCI and wait for the VCI indicator light to turn green.

Launch GDS-Smart then select ECU Upgrade (A).

Information

GDS-Smart can be accessed via STUI or via the application icon.

GDS AUTO MODE ECU UPDATE

Select Auto Mode (A).
Select the targeted system for the ECU update referencing directions in the specific TSB.
Information

Completing a scan of a system (B) will display its Current ROM ID and the Latest ROM ID. If both Current ROM ID and Latest ROM ID match, the system is already updated to the most currently available version. If Latest ROM ID does NOT match Current ROM ID, the update icon (C) will be a selectable action.

It is recommended to record the previous and new ROM IDs for review should Manual ECU upgrade be required due to failure.

Refer to the ROM ID table and GDS Event Description within specific TSBs.
Information

The ECU update has two stages:
1. Tablet to VCI
2. VCI to ECU
The VCI indicator light will change from green to purple once the ECU update is in progress.

NOTE: Do NOT remove the VCI from the OBD-II connector during an ECU update. This will result in a failed update and may potentially cause damage to vehicle system modules.

Once the update has been completed, follow the on-screen instructions for module reset and finalization.
- Example:
  Turn ignition OFF for 10 seconds (D).
  
  Then turn ignition ON and select OK (E).
NOTE: Failure to turn OFF the ignition for a sufficient amount of time may result in an inoperative vehicle.

Information
- Use the countdown timer reset button.
- On-screen instructions may indicate to turn ignition OFF between 10 - 30 seconds , depending on the type of update.
The screen will display Success (F) once the ECU update is fully completed.
Capture this ECU Update complete screen for warranty submissions.

Information

If the ECU Update complete screen was NOT captured at the time of the update, proceed to Accessing Historical GDS Data Using e-Report Function at the end of this TSB to capture the required information.

Information
- If the ECU update fails, the GDS will prompt to Close or Retry the ECU update (G).
- If the ECU update fails multiple times, proceed to the GDS Manual Mode ECU Update procedure.
After ECU update is successful, execute Fault Code Searching (H) for all systems and clear all DTCs that may have resulted from the ECU update process.
Start the engine or place vehicle in "Ready Mode". Confirm there are NO warning lights illuminated and ensure proper operation of the updated system(s).
If applicable, clear all DTCs in the Bluelink system per TSB 19-BE-010H , CLEARING DIAGNOSTIC CODE(S) FROM THE BLUE LINK SYSTEM (GEN L) .

GDS MANUAL MODE ECU UPDATE

NOTE: Use Manual Mode to update the ECU ONLY when Auto Mode fails.
Locate and use the ECU P/N from the vehicle's ECU label if the ROM ID table lacks information.
Document the Manual-Mode attempts to prevent chargebacks on claims.
To prevent damage to ECU modules, follow the specific ECU Update TSB and reference the ROM ID tables included for the appropriate calibrations and passwords.

Select ECU Upgrade (A) then Manual Mode (B).
Information

Please use the e-Report function within GDS to obtain original ROM ID.
Select the targeted system for the ECU update referencing the TSB content (for example, AT or ENGINE ).
NOTE: Selecting incorrect event will corrupt the ECU and render the vehicle inoperable.

Information

For ECM, differentiation may occur based on model years (MY), vehicle type, engine, transmission, and whether the vehicle has an immobilizer (IMMO/+IMMO for vehicles equipped with SSB, or NON IMMO/-IMMO for vehicles with key ignition systems).
Enter the 4-digit password (C) located within the specific TSB.
Select OK (D).
Repeat steps 3 - 7 from the GDS Auto Mode ECU Update procedure.

ACCESSING HISTORICAL GDS DATA USING E-REPORT FUNCTION

From the GDS-Smart home screen launch e-Report (A).
Select e-Report Case List (B).
Select desired e-Report from applicable vehicle (C).
Use the tablet screenshot function to capture required information (D).