2011-2022 Hyundai Immobilizer Software Update TSB 23-01-014H-4

Hyundai has issued Technical Service Bulletin (TSB) 23-01-014H-4, also known as Service Campaign 993, to enhance the security of various 2011-2022 Hyundai models. This bulletin, dated April 2023, supersedes previous version 23-01-014H-3. The update expands coverage to include additional models such as 2019-2022MY Santa Fe (TMa), 2013-2014MY Genesis Coupe (BK), 2020-2021 Palisade (LX2), 2011-2016MY Elantra (UD/MD), and 2013-2017 Elantra GT (GD). It also provides updated warranty and GDS information, troubleshooting tips on page 31, and a revised inspection procedure for vehicles with a Start/Stop button or immobilizer lamp. The primary goal of this Hyundai immobilizer software update is to revise the OEM Hyundai burglar alarm system operation and ignition start logic for vehicles not originally equipped with an immobilizer.

Important Warnings for Owners

Hyundai Technical Service Bulletin 23-01-014H-4 (Service Campaign 993) includes several critical warnings and advisories for both dealers and vehicle owners:

• Mandatory Service: Dealers are required to perform this service campaign on all affected vehicles prior to customer retail delivery. This update must also be completed whenever an affected vehicle is in the shop for any maintenance or repair. This ensures that all eligible vehicles receive the necessary security enhancements.
• Aftermarket Systems: "Vehicles equipped with aftermarket/add-on alarms or remote start systems may not operate normally if the IBU/BCM is updated with this software." Owners with such modifications should be aware of potential compatibility issues after the update.
• Manual Update Caution: If the IBU/BCM update process begins but then fails in Auto Mode, technicians are instructed to perform the update in Manual Mode to recover. However, if the Auto Mode update is not available due to an unidentified ROM ID, technicians "DO NOT perform the update using Manual Mode, call Techline for further instructions." This prevents incorrect software application.
• Tinted Windows: "If the window is tinted with a non-legal shade, inform the customer of the possible poor visibility of the anti-theft decals." This ensures owners are aware that the decals may not be easily visible depending on their window tint.
• Key Fob Re-initialization: "Once the upgrade procedure has been completed, the key fob buttons to lock and unlock the vehicle are required to activate/deactivate the anti-theft system. After using the key fob to activate the anti-theft system, the key fob must be used to first disarm the system prior to attempting to start the vehicle." This is a crucial step for owners to perform immediately after the service to ensure proper system function.
• Decal Installation: Technicians are warned to "Avoid touching the bottom (glue side) of the decal as the fingerprint will reduce the adhesive strength to the window glass." While directed at technicians, this highlights the importance of proper installation for the anti-theft decals.

Symptoms and Diagnosis: Lack of Immobilizer

The primary concern addressed by this Hyundai immobilizer software update is that certain Hyundai vehicles may not be equipped with an immobilizer. An immobilizer is a vital security feature designed to prevent the engine from starting unless the correct key or transponder is present. Without this system, vehicles are more susceptible to theft. This TSB is a proactive security update to mitigate this vulnerability.

Diagnosis for this service campaign involves a visual inspection to determine if the vehicle is equipped with an immobilizer system. This is done by checking for a START/STOP ignition button or an immobilizer lamp on the instrument cluster. If the vehicle has either of these, it is considered equipped with an immobilizer, and only an inspection claim is submitted. If neither is present, the vehicle requires the IBU/BCM software update and decal installation.

Affected Components and Part Numbers

The core components affected by this service campaign are the Integrated Body Control Unit (IBU/BCM) and the vehicle's ignition start logic. The software update revises the logic within the IBU/BCM to enhance the burglar alarm system operation.

In addition to the software update, two anti-theft decals are installed on the front windows of the vehicle. The part number for these decals is NP001-SC993. These decals are supplied in a roll of 500, and two decals are used per vehicle. Specific ordering information for these decals can be found in the SC993 Parts Bulletin located in the Documents Library within WebDCS.

Warranty Information

Warranty claims for this service campaign fall under specific operation codes and time allocations:

• Inspection Only (Vehicles with START/STOP Button or Immobilizer Lamp):
  • Operation Codes (OP. CODE): HYIMMOC4 through HYIMMOE7, depending on the specific model (e.g., HYIMMOC4 for Sonata (LFa), HYIMMOC5 for Elantra (AD) "KMH").
  • Operation Time (OP. TIME): 0.1 M/H (Man-Hours).
  • Causal Part: 114
  • Nature: ZZ3
• Inspection and BCM/IBU Upgrade and Decals Application (Vehicles without START/STOP Button or Immobilizer Lamp):
  • Operation Codes (OP. CODE): HYIMMOA0 through HYIMMOC3, depending on the specific model (e.g., HYIMMOA0 for Sonata (LFa), HYIMMOA1 for Elantra (AD) "KMH").
  • Operation Time (OP. TIME): 0.3 M/H or 0.4 M/H, which includes the inspection, decal installation, STUI photos, and uploading.
  • Causal Part: 114
  • Nature: ZZ3

Claims must be submitted via the Campaign Claim Entry Screen. If any part not covered by this campaign requires replacement and is still under warranty, a separate claim should be submitted. For out-of-warranty parts, a Prior Approval request for goodwill consideration is required. Technicians must ensure STUI photos of the installed anti-theft decals clearly show the last 6 digits of the VIN and the repair date; failure to do so may result in a debited claim.

Detailed Service Procedure

The service procedure for Service Campaign 993 involves an initial inspection, followed by a software update to the IBU/BCM, and the installation of anti-theft decals. This Hyundai immobilizer software update is critical for enhancing vehicle security.

1. Inspection for Immobilizer System

• Step 1A: Check for START/STOP Button. Visually confirm if the vehicle is equipped with a START/STOP button. If present, take a STUI (Service Technical Update Information) picture of the button with a piece of paper displaying the last 6 digits of the VIN and the repair date. Upload these photos to STUI. If the vehicle has a START/STOP button, the procedure is complete, and an "INSPECTION ONLY" campaign claim is submitted.
• Step 1B: Check for Immobilizer Lamp. If the vehicle is not equipped with a START/STOP button, proceed to inspect for an immobilizer lamp on the instrument cluster. For mechanical key ignition systems, turn the ignition to the ON position. Visually confirm if an immobilizer lamp is displayed. If present, take a STUI picture of the immobilizer lamp with the VIN and repair date, and upload the photos. If an immobilizer lamp is present, the procedure is complete, and an "INSPECTION ONLY" campaign claim is submitted.
• Proceed to Software Update. If the vehicle is not equipped with either a START/STOP button or an immobilizer lamp, proceed to perform the IBU/BCM software update.

2. IBU/BCM Software Update Preparation

• Video Guide: Technicians are advised to refer to a guided video for additional information at https://vimeo.com/796843448/49ace103a8.
• Vehicle Confirmation: Before starting the update, confirm the vehicle is not equipped with a START/STOP push button and does not have an immobilizer lamp illuminated on the instrument cluster when the ignition is ON.
• ROM ID Check: Check the vehicle's current IBU/BCM ROM ID and compare it to the extensive ROM ID information tables provided in the TSB. These tables list various BCM/IBU Part Numbers (P/N) and their corresponding Old and New ROM IDs. It is crucial to identify the correct ROM ID for the specific model and year. Technicians should take a picture or write down the current ROM ID, as this will determine the correct PASSCODE to use for manual updates if needed. The TSB also contains manual mode passcode tables for each model, listing menus and corresponding passcodes (e.g., 9431 for YFa BCM 95400-3Q000/100/001/101).
• GDS Update Procedures: The GDS IBU/BCM Update should initially be performed in Auto Mode. Technicians should refer to TSB 15-GI-001 for detailed procedures on using the tablet-based Mobile GDS ECU update system.
• Manual Mode Contingency: If the IBU/BCM update fails in Auto Mode, the update should be performed in Manual Mode to recover. However, if Auto Mode is unavailable due to an unidentified ROM ID, technicians are explicitly instructed to "DO NOT perform the update using Manual Mode, call Techline for further instructions."

3. Performing the Software Update

• System Selection: In the ECU Upgrade screen of the GDS, select "IBU/BCM" as the system to update.
• ID Check: Perform an ID Check and verify the current IBU/BCM ROM ID against the tables in the TSB.
• GDS Software Update: Execute the GDS software update, following the procedures outlined in TSB 15-GI-001.
• Decal Installation (Concurrent): While the software is updating, proceed with the anti-theft decal installation.
• Verification: After the software update, ensure it was successful by confirming the latest ROM ID.
• DTC Clearance: Check for any Diagnostic Trouble Codes (DTCs) in all menus and erase them.
• Completion: The software update is now complete.

4. Anti-Theft Decal Installation

The anti-theft decals (Part Number NP001-SC993) are installed on the front windows concurrently with the software update:

• Template Preparation: Print the last page of TSB 23-01-014H-4, which serves as a template. Fold the template upward from the bottom along the solid line and cut out the two indicated rectangles.
• Window Preparation: Roll both the front driver and passenger windows completely up. Clean the inside lower left corner of the driver's side window and the lower right corner of the passenger's side window using rubbing alcohol and a new rag.
• Template Alignment: Align the template edge approximately 1¼ inches (3.175 cm) next to the existing label or decal edge on the window. Use masking tape to secure the template to the glass and door panel.
• Decal Application: Tear or cut two anti-theft decals from the roll. Without touching the adhesive (glue side) of the decal, carefully peel back the paper backing halfway. Align the decal precisely within the cutout rectangle of the template. Use your thumb to firmly press the decal onto the window glass.
• Finishing: Remove the template. Continue pressing down on the decal to ensure there are no visible bubbles. Repeat the process for the other front window.
• STUI Photos: Take STUI pictures of both the driver and passenger side anti-theft decals on the front windows. These photos must include a piece of paper displaying the last 6 digits of the VIN and the date of the repair. Upload these photos to STUI.

Troubleshooting Tips

If any issues arise during the software update or if certain vehicle features do not operate normally after the Hyundai immobilizer software update, technicians are advised to perform a capacitive discharge and then attempt the procedure again.

Post-Update Owner Action

After the service is completed, owners must perform a specific action to activate the new anti-theft system. The key fob buttons must be used to lock and unlock the vehicle to activate/deactivate the anti-theft system. Furthermore, the key fob must be used to first disarm the system before attempting to start the vehicle for the first time after the update.

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Source: NHTSA ID: 10240417