24-FL-002H
Service Bulletin Details
Public Details for: 24-FL-002H
This bulletin provides the procedure to update the engine control module (ecm) and/or the transmission control module (tcm) for 2020-2023my sonata (dn8/dn8a) vehicles to improve operation of the idle stop and go (isg) system. Under certain
Models from 2023
2023 HYUNDAI SONATA |
Models from 2022
2022 HYUNDAI SONATA |
Models from 2021
2021 HYUNDAI SONATA |
Models from 2020
2020 HYUNDAI SONATA |
GROUP FUEL SYSTEM DATE Technical Service Bulletin SUBJECT: FEBRUARY 2024 NUMBER 24-FL-002H MODEL(S) SONATA (DN8/DN8A) ECU/TCU SOFTWARE UPDATE FOR ISG LOGIC IMPROVEMENT Description: This bulletin provides the procedure to update the Engine Control Module (ECM) and/or the Transmission Control Module (TCM) for 2020-2023MY Sonata (DN8/DN8a) vehicles to improve operation of the Idle Stop and Go (ISG) system. Under certain circumstances the vehicle may not restart after the ISG system has engaged and requires a manual restart due to the lack of intake manifold pressure recovery. Applicable Vehicles: • 2022-2023MY Sonata (DN8) produced 6/3/2021 – 10/23/2023 (VIN starting with ‘KMH’) • 2020-2022MY Sonata (DN8a) produced 10/23/2019 – 2/14/2022 (VIN starting with ‘5NP’) GDS Information: System Event # Description Engine 1074 DN8 THETA3 2.5GDI ECU S/W Improvement for ISG Logic Improvement A/T 1075 DN8 THETA3 2.5GDI TCU S/W Improvement for ISG Logic Improvement Engine 1076 DN8a THETA3 2.5GDI ECU S/W Improvement for ISG Logic Improvement A/T 1077 DN8a THETA3 2.5GDI TCU S/W Improvement for ISG Logic Improvement (*or use a later available event as listed in the GDS Engine or A/T System Update screen if one is available.) Circulate To: General Manager, Service Manager, Parts Manager, Warranty Manager, Service Advisors, Technicians, Body Shop Manager, Fleet Repair SUBJECT: ECU/TCU SOFTWARE UPDATE FOR ISG LOGIC IMPROVEMENT Warranty Information: Model Op. Code Operation Op. Time 20-22MY Sonata (DN8/DN8a) 39110FH4 ECU + TCU Software Update 0.6 M/H 23MY Sonata 39110FH5 (DN8) ECU Software Update 0.4 M/H Casual Part Nature Code Cause Code Refer to WebLTS for applicable part to labor op combination W17 ZZ3 NOTE 1: Normal warranty applies. NOTE 2: Submit claim on Claim Entry Screen as “Warranty” type. NOTE 3: This TSB includes Repair validation photos. Op times include VIN, Mileage, and photo capture of the “ECU update complete” screen as outlined in the Digital Documentation Policy. NOTE 4: If a part is found in need of replacement while performing this TSB and the affected part is still under warranty, submit a separate claim using the same repair order. If the affected part is out of warranty, submit a Prior Approval request for goodwill consideration prior to performing the work. Service Procedure: STUI 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 GDS Vehicle Battery Low Voltage Warning: If voltage is below 12 volts per the GDS warning, then select Back and attach a battery maintainer/charger or run the vehicle for at least 20 minutes to ensure an adequate battery charge for reliable update results. Turn ignition back ON, and then retry the ECU update again. TSB #: 24-FL-002H Page 2 of 6 SUBJECT: SUBJECT: 1. ECU/TCU SOFTWARE UPDATE FOR ISG LOGIC IMPROVEMENT Perform the ECU and TCU updates in Auto Mode. Use the ID Check to verify the ROM ID before updating the software. i Information Refer to TSB 15-GI-001 for additional information for the ECU update Procedure For Tablet-Based GDS Mobile. i Information 2023MY Sonata (DN8) vehicles will only require ECU update 1074. TSB #: 24-FL-002H Page 3 of 6 SUBJECT: ECU/TCU SOFTWARE UPDATE FOR ISG LOGIC IMPROVEMENT SUBJECT: 2. STUI Take a screenshot of the ECU update complete screen using your tablet and upload to STUI. 3. After the ECU update process shows 100% complete, cycle the ignition key to OFF for at least 10 seconds to reset the control unit. 4. Perform an All Systems Fault Code search and erase DTC history that had incidentally occurred from the ECU update. 5. Start the vehicle in Ready mode to confirm proper operation of the vehicle. ROM ID Information Table: Event # 1074 Model MY System ROM ID ECU Part Number Old New 39110-2S040 DNDVD5GMC3XXXJ1A DNDVD5GMC3XXXJ1B DNDVD5GMC3XXXJ1C 39110-2S279 DNDVD5GMC3XXXL5A DNDVD5GMC3XXXL5B DNDVD5GMC3XXXL8A DNDVD5GMC3XXXL8B 39110-2S042 DNEVD5GMC3XXXM1A DNEVD5GMC3XXXM1B 2022 DN8 ECU 2023 TSB #: 24-FL-002H Page 4 of 6 SUBJECT: ECU/TCU SOFTWARE UPDATE FOR ISG LOGIC IMPROVEMENT SUBJECT: ROM ID Information Table: Event # 1075 Model DN8 MY 2022 System ROM ID TCU Part Number Old 39110-2S040 SDN8G25NB2 New TCU SDN8G25NB5 39110-2S279 SDN8G25NB3 SDN8G25NB4 ROM ID Information Table: Event # 1076 Model MY System 2020 DN8a 2021 ECU Part Number 39102-2SDB0 ROM ID Old DNBVN5GMC3XXXDBB DNBVN5GMC3XXXDCA DNBVN5GMC3XXXG2F DNBVN5GMC3XXXG2G New DNBVN5GMC3XXXG2H 39104-2SDF0 DNCVN5GMC3XXXF0A DNCVN5GMC3XXXG2F DNCVN5GMC3XXXG2G DNCVN5GMC3XXXG2H 39100-2SDH0 DNCVN5GMC3XXXG2A DNCVN5GMC3XXXG2B DNCVN5GMC3XXXG2C DNCVN5GMC3XXXG2D 39100-2SDK0 DNDVN5GMC3XXXJ1A DNDVN5GMC3XXXJ1B DNDVN5GMC3XXXJ1C ECU 2022 ROM ID Information Table: Event # 1077 Model MY System 2020 DN8a 2021 Old 39102-2SDB0 SDN8G25NB0 SDN8G25NB1 39104-2SDF0 SDN8G25NB0 SDN8G25NB1 TCU 2022 ROM ID TCU Part Number 39100-2SDH0 SDN8G25NB2 39100-2SDK0 SDN8G25NB2 TSB #: 24-FL-002H New SDN8G25NB5 Page 5 of 6 SUBJECT: SUBJECT: ECU/TCU SOFTWARE UPDATE FOR ISG LOGIC IMPROVEMENT Manual Mode Password: Event # 1074 ECM Menu Password DN8 2.5 GDI 8AT 22MY ISG 39110-2S040 5232 DN8 2.5 GDI 8AT 22MY ISG 39110-2S279 5233 DN8 2.5 GDI 8AT 23MY ISG 39110-2S042 5234 Manual Mode Password: Event # 1075 TCU Menu Password DN8 2.5 GDI 8AT ISG 39110-2S038/040/279/042 5241 Manual Mode Password: Event # 1076 ECM Menu Password DN8A 2.5 GDI 8AT 20MY ISG 39102-2SDB0 5251 DN8A 2.5 GDI 8AT 21MY ISG 39104-2SDF0 5252 DN8A 2.5 GDI 8AT 21MY ISG 39100-2SDH0 5253 DN8A 2.5 GDI 8AT 22MY ISG 39100-2SDK0 5254 DN8A 2.5 GDI 8AT 22MY ISG 39100-2SDM0 5255 Manual Mode Password: Event # 1077 TCU Menu Password DN8A 2.5 GDI 8AT ISG 39102-2SDB0/F0/H0/K0/M0 5241 TSB #: 24-FL-002H Page 6 of 6 SUBJECT: