# Service bulletin 21\-AT\-006H

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 10196546
- Published by NHTSA: 2021\-06\-10
- Manufacturer's number: 21\-AT\-006H
- Manufacturer's date: 2021\-05\-21
- NHTSA component: POWER TRAIN

## NHTSA's summary

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 durability. Hyundai does not approve the use of any aftermarket ATF or gear oil additives.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10196546-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10196546-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Transmission and driveline

## Vehicles listed

- 1997 to 2011 HYUNDAI ACCENT
- 2006 to 2010 HYUNDAI AZERA
- 1997 to 2010 HYUNDAI ELANTRA
- 2009 HYUNDAI ELANTRA TOURING
- 2010 HYUNDAI ELANTRA TOURING
- 2011 to 2012 HYUNDAI ELANTRA TOURING
- 2007 to 2008 HYUNDAI ENTOURAGE
- 2001 to 2009 HYUNDAI SANTA FE
- 1997 to 2010 HYUNDAI SONATA
- 1998 to 2008 HYUNDAI TIBURON
- 2005 to 2009 HYUNDAI TUCSON
- 2004 HYUNDAI XG 350
- 2001 HYUNDAI XG300
- 2002 to 2004 HYUNDAI XG300
- 2001 HYUNDAI XG300L
- 2002 HYUNDAI XG300L
- 2001 HYUNDAI XG350
- 2002 to 2005 HYUNDAI XG350

## Recalls for the same vehicles and component

- [01V362000](/recalls/nhtsa/01V362000.md), 2001-11-29: POWER TRAIN
- [1999140](/recalls/tc/1999140.md), 1999-07-27: Powertrain
- [99V178000](/recalls/nhtsa/99V178000.md), 1999-07-07: POWER TRAIN:AUTOMATIC TRANSMISSION

## Other bulletins for the same vehicles and component

- [24\-AT\-002H](/bulletins/10253275.md), 2024-04-16, Service bulletin: POWER TRAIN. This TSB provides a procedure to diagnose and replace, if necessary, an automatic transmission with Incorrect Ratio DTC \(transmission clutch slip in gear above limit\) listed on Page 2.
- [24\-01\-026H](/bulletins/10253274.md), 2024-04-16, Service bulletin: POWER TRAIN. Some Santa Fe \(CM\) vehicles may have an engine that potentially leaks oil from the front cylinder bank’s valve cover onto the alternator. Oil could damage the alternator resulting in illumination of the charging system warning lamp and disablement of the charging system. If the vehicle is continually driven without recharging the battery, the engine will eventually shut off, increasing the risk of a crash. This bulletin outlines the procedures to inspect for T\-joint leakage and install an oil protector to address this issue.
- [23\-01\-014H\-5](/bulletins/10241874.md), 2023-09-06, Service bulletin: ELECTRICAL SYSTEM; POWER TRAIN. Hyundai has launched an anti\-theft software upgrade and window decal campaign \(Campaign 993\), combined with an anti\-theft steering wheel lock campaign \(Campaign P32\), in response to an increase in thefts of certain 2011\-2022MY Hyundai vehicles not equipped with engine immobilizers targeted through social media. For certain vehicles that cannot be updated with the software \(Campaign 993\), Hyundai is offering customers steering wheel locks at the dealer \(Campaign P32\). This Dealer Best Practices Guide provides information to assist dealership personnel with customer questions relating to the immobilizer software upgrade, window decals and steering wheel lock ant\-theft solutions available from HMA through Hyundai dealers.
- [20\-AT\-017H](/bulletins/10176194.md), 2020-06-06, Service bulletin: POWER TRAIN. If you are servicing an applicable vehicle with the following symptoms and DTC, follow the Service Procedure on Page 4. • Check Engine light on • DTC P0880/P088000 \- TCM Power signal error open/short • Transmission stuck in 4th gear fail\-safe • Harsh shift into Reverse and Drive
- [20\-AT\-016H](/bulletins/10174807.md), 2020-05-07, Service bulletin: POWER TRAIN; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; EQUIPMENT ADAPTIVE/MOBILITY. The automatic transmission warranty repair policy authorizes in\-dealership repairs of the following components for both OEM \(new\) and remanufactured automatic transmissions:
- [20\-AT\-014H](/bulletins/10174799.md), 2020-05-07, Service bulletin: POWER TRAIN; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. If you are servicing an applicable vehicle with a “Check Engine” light on and one or more of the DTC listed below, follow the repair procedure and replace the related solenoid and oil pressure harness.
- [20\-AT\-008H](/bulletins/10172227.md), 2020-03-07, Service bulletin: POWER TRAIN; EQUIPMENT; ELECTRICAL SYSTEM; EQUIPMENT ADAPTIVE/MOBILITY. If you are servicing an applicable vehicle with a “Check Engine” light on and one or more of the DTC listed below, follow the repair procedure and replace the related solenoid and oil pressure harness.
- [20\-AT\-001H](/bulletins/10170899.md), 2020-02-03, Service bulletin: POWER TRAIN. This TSB provides a procedure to diagnose and repair a transaxle for the following Incorrect Ratio DTC \(transaxle clutch slipping more than 200 rpm in gear\).
- [19\-AT\-021H\-1](/bulletins/10170511.md), 2020-01-21, Service bulletin: POWER TRAIN; EQUIPMENT. If you are servicing a vehicle with a transmission slipping concern, follow the Service Procedure shown below and perform a stall test. This TSB provides a procedure to test each clutch in the transmission. If the vehicle fails the stall test, replace the transmission. ? PASS: Stall speed is between 1700\~2900 rpm \(See shop manual for stall speed\). ? FAIL: Engine revs to redline limit \(6,000\~6,500 rpm\). If so, replace the transmission.
- [19\-AT\-015H](/bulletins/10165455.md), 2019-09-30, Service bulletin: EQUIPMENT ADAPTIVE/MOBILITY; POWER TRAIN:AUTOMATIC TRANSMISSION; ENGINE. If you are servicing an applicable vehicle with a ?Check Engine? light on and one or more of the DTC listed below, follow the repair procedure and replace the related solenoid and oil pressure harness

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