TSB 21-AT-006H — Hyundai Service bulletin
21-AT-006H is a service bulletin on file with NHTSA for 5 Hyundai models, 1997–2011 model years. A TSB is factory repair guidance, not a recall — the repair is not automatically free.
What the bulletin says. Hyundai approves only the ATF, DCT gear oil and IVT gear oil specified in the vehicle’s owner’s manual. Use of other ATF may result in improper shift quality or other drivability conditions. Use of other DCT and IVT gear oil may result in reduced…
NHTSA's own summary of the document, quoted from the public manufacturer-communications file.
Vehicles and model years 21-AT-006H names
| Vehicle | Model years |
|---|---|
| Hyundai Accent | 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 |
| Hyundai Elantra | 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 |
| Hyundai Santa Fe | 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 |
| Hyundai Sonata | 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 |
| Hyundai Tucson | 2005, 2006, 2007, 2008, 2009 |
Every document filed under 21-AT-006H
| Document ID | Filed | Type |
|---|---|---|
| 21-AT-006H | May 21, 2021 | Service bulletin |
What 21-AT-006H covers
Transmission & drivetrain — the component vocabulary NHTSA files this communication under.
Questions buyers ask
What is TSB 21-AT-006H?
21-AT-006H is a service bulletin filed with NHTSA by Hyundai, covering 5 Hyundai models across the 1997–2011 model years. NHTSA's summary reads: Hyundai approves only the ATF, DCT gear oil and IVT gear oil specified in the vehicle’s owner’s manual. Use of other ATF may result in improper shift quality or other drivability conditions. Use of other DCT and IVT gear oil may result in reduced…
Which vehicles does 21-AT-006H cover?
NHTSA's file names Hyundai Accent (1997–2011); Hyundai Elantra (1997–2010); Hyundai Santa Fe (2001–2009); Hyundai Sonata (1997–2010); Hyundai Tucson (2005–2009). 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 21-AT-006H a recall, and is the repair free?
No. 21-AT-006H 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 21-AT-006H?
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 21-AT-006H, 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 21-AT-006H. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.