TSB 24-FL-002H — Hyundai Service bulletin
24-FL-002H is a service bulletin on file with NHTSA for the Hyundai Sonata, 2020–2023 model years. A TSB is factory repair guidance, not a recall — the repair is not automatically free.
What the bulletin says. 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…
NHTSA's own summary of the document, quoted from the public manufacturer-communications file.
Vehicles and model years 24-FL-002H names
| Vehicle | Model years |
|---|---|
| Hyundai Sonata | 2020, 2021, 2022, 2023 |
Every document filed under 24-FL-002H
| Document ID | Filed | Type |
|---|---|---|
| 24-FL-002H | February 29, 2024 | Service bulletin |
What 24-FL-002H covers
Engine, Transmission & drivetrain — the component vocabulary NHTSA files this communication under.
Questions buyers ask
What is TSB 24-FL-002H?
24-FL-002H is a service bulletin filed with NHTSA by Hyundai, covering the Hyundai Sonata across the 2020–2023 model years. NHTSA's summary reads: 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…
Which vehicles does 24-FL-002H cover?
NHTSA's file names Hyundai Sonata (2020–2023). A bulletin number can be re-issued against more vehicles later, so check the model-year list on this page against your own.
Is TSB 24-FL-002H a recall, and is the repair free?
No. 24-FL-002H is repair guidance the manufacturer sent its dealers, not a safety defect finding. You pay for the work unless the vehicle is still under warranty. Recall repairs, by contrast, are always free.
How do I get the full text of 24-FL-002H?
Take the document ID to a dealer's service desk, or search NHTSA's manufacturer-communications records. This page carries every document ID filed under 24-FL-002H, its date, and NHTSA's own summary from the public file.
Every number on this page is a count of records in the federal complaint, recall, and investigation files published by NHTSA's Office of Defects Investigation. This page lists only what NHTSA's manufacturer-communications file records under 24-FL-002H. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.