TSB 26-TC-001H — Hyundai Service bulletin
26-TC-001H is a service bulletin on file with NHTSA for the Hyundai Palisade, 2020–2024 model years. A TSB is factory repair guidance, not a recall — the repair is not automatically free.
What the bulletin says. Some Palisade (LX2) vehicles may produce noise from AWD coupling vibrations when making turns caused by a logic error with the All Wheel Drive Electronic Control Unit (AWD ECU). This bulletin provides instructions to update the AWD ECU to reduce the coupling noise.
NHTSA's own summary of the document, quoted from the public manufacturer-communications file.
Vehicles and model years 26-TC-001H names
Every document filed under 26-TC-001H
| Document ID | Filed | Type |
|---|---|---|
| 26-TC-001H | June 1, 2026 | Service bulletin |
What 26-TC-001H covers
Suspension — the component vocabulary NHTSA files this communication under.
Questions buyers ask
What is TSB 26-TC-001H?
26-TC-001H is a service bulletin filed with NHTSA by Hyundai, covering the Hyundai Palisade across the 2020–2024 model years. NHTSA's summary reads: Some Palisade (LX2) vehicles may produce noise from AWD coupling vibrations when making turns caused by a logic error with the All Wheel Drive Electronic Control Unit (AWD ECU). This bulletin provides instructions to update the AWD ECU to reduce the coupling noise.
Which vehicles does 26-TC-001H cover?
NHTSA's file names Hyundai Palisade (2020–2024). 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 26-TC-001H a recall, and is the repair free?
No. 26-TC-001H 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 26-TC-001H?
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 26-TC-001H, 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 26-TC-001H. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.