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Service bulletin 20-AT-016H

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10174807
Published by NHTSA2020-05-07
Manufacturer's number20-AT-016H
Manufacturer's date2020-04-17
NHTSA componentPOWER TRAIN; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; EQUIPMENT ADAPTIVE/MOBILITY

NHTSA's summary

The automatic transmission warranty repair policy authorizes in-dealership repairs of the following components for both OEM (new) and remanufactured automatic transmissions:

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Equipment and accessories, Labels and manuals, Transmission and driveline

Vehicles listed
GENESIS G702019
GENESIS G802017, 2018, 2019
GENESIS G902017, 2018, 2019, 2020
HYPERTEK DOMINATOR1997
HYUNDAI ACCENT
HYUNDAI ACCENT1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
HYUNDAI ACCENT GT1997 (the catalog's model; the bulletin names a series or trim of it)
HYUNDAI AZERA2005
HYUNDAI AZERA2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017
HYUNDAI ELANTRA
HYUNDAI ELANTRA1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
HYUNDAI ELANTRA GT2013, 2014, 2015, 2016 (the catalog's model; the bulletin names a series or trim of it)
HYUNDAI ELANTRA GT2017, 2018, 2019, 2020
HYUNDAI ELANTRA TOURING2007, 2008, 2009 (the catalog's model; the bulletin names a series or trim of it)
HYUNDAI ELANTRA TOURING2010
HYUNDAI ELANTRA TOURING2011, 2012, 2013 (the catalog's model; the bulletin names a series or trim of it)
HYUNDAI ENTOURAGE2006, 2007, 2008, 2009
HYUNDAI EQUUS2009 to 2010
HYUNDAI EQUUS2011, 2012, 2013, 2014, 2015, 2016
HYUNDAI EQUUS2017
HYUNDAI EXCEL
HYUNDAI EXCEL1996 to 1998
HYUNDAI EXCEL2001
HYUNDAI EXPRESSWAY 995
HYUNDAI EXPRESSWAY 996
HYUNDAI GENESIS2008
HYUNDAI GENESIS2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016
HYUNDAI GENESIS COUPE2010, 2011, 2012, 2013, 2014, 2015, 2016
HYUNDAI HYUNDAI
HYUNDAI HYUNDAI1997
HYUNDAI IONIQ ELECTRIC2017, 2018, 2019 (the catalog's model; the bulletin names a series or trim of it)
HYUNDAI IONIQ HYBRID2017, 2018, 2019 (the catalog's model; the bulletin names a series or trim of it)
HYUNDAI IONIQ PLUG-IN HYBRID2018, 2019 (the catalog's model; the bulletin names a series or trim of it)
HYUNDAI KONA2018, 2019, 2020
HYUNDAI KONA ELECTRIC2019 (the catalog's model; the bulletin names a series or trim of it)
HYUNDAI NEXO2019, 2020
HYUNDAI PALISADE2020
HYUNDAI SANTA FE
HYUNDAI SANTA FE2000
HYUNDAI SANTA FE2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
HYUNDAI SANTA FE SPORT2013, 2014, 2015, 2016, 2017, 2018
HYUNDAI SCOUPE
HYUNDAI SCOUPE1996 to 1997
HYUNDAI SONATA
HYUNDAI SONATA1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
HYUNDAI SONATA GLS1999 (the catalog's model; the bulletin names a series or trim of it)
HYUNDAI SONATA HYBRID2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019 (the catalog's model; the bulletin names a series or trim of it)
HYUNDAI SONATA PLUG-IN HYBRID2016, 2017, 2018, 2019 (the catalog's model; the bulletin names a series or trim of it)
HYUNDAI TIBURON
HYUNDAI TIBURON1996
HYUNDAI TIBURON1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
HYUNDAI TRAJET2001
HYUNDAI TUCSON2004
HYUNDAI TUCSON2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
HYUNDAI VELOSTER2011
HYUNDAI VELOSTER2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
HYUNDAI VENUE2020
HYUNDAI VERACRUZ2007, 2008, 2009, 2010, 2011, 2012
HYUNDAI XG1999 to 2002
HYUNDAI XG 3502004
HYUNDAI XG300
HYUNDAI XG3002001
HYUNDAI XG3002002 to 2004
HYUNDAI XG300L (the catalog's model; the bulletin names a series or trim of it)
HYUNDAI XG300L2001 (the catalog's model; the bulletin names a series or trim of it)
HYUNDAI XG300L2002
HYUNDAI XG3502001
HYUNDAI XG3502002, 2003, 2004, 2005
HYUNDAI XG3502006

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
20245522024-09-23. Label
20244312024-07-25. Powertrain
20221182022-03-15. Accessories
20V3930002020-07-02. EQUIPMENT:ELECTRICAL
20V1220002020-02-28. EQUIPMENT:OTHER:LABELS
20181352018-03-16. Powertrain
20164362016-09-08. Powertrain
16V6280002016-08-30. ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)
20161252016-03-21. Accessories
20160602016-02-08. Powertrain

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
TXXZ OL2025-03-01. Warranty extension. Certain 2014 – 2015 model year Tucson vehicles may have a weakened weld at the zone where the center muffler is attached to the exhaust pipe. This condition may cause the center muffler to detach from the exhaust pipe. At Hyundai, we are committed to providing vehicles of outstanding quality and value. In an effort to meet this commitment, Hyundai is extending the warranty coverage for the center muffler assembly under this condition to 15 years / 150,000 miles from the date of original retail delivery or date of first use and is valid for original and subsequent owners.
24-AT-002H2024-04-16. Service bulletin. 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.
24-01-026H2024-04-16. Service bulletin. 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.
24-FL-002H2024-03-05. Service bulletin. 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.
24-01-009H2024-03-05. Service bulletin. This bulletin provides the service procedure to: 1) Upgrade the IBU/BCM (Integrated Body Control Unit/Body Control Module) to revise the OEM Hyundai burglar alarm system operation and ignition start logic and 2) Install two anti-theft decals for the front windows. Additional decals may also be installed in the rear windows at customer’s discretion.
24-01-009H2024-03-05. Service bulletin. 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), and anti-theft ignition cylinder protector campaign (Campaign 9A5) 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 upgraded with the software (Campaign 993), Hyundai is offering customers an anti-theft ignition cylinder protector to be installed on their vehicle. 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 anti-theft solutions available from HMA through Hyundai dealers.
23-EM-009H2023-12-22. Service bulletin. Certain 2020-2023MY Sonata Hybrid (DN8 HEV) vehicles may exhibit coolant leakage, engine overheating, and white smoke from the exhaust due to an internal leak at the Exhaust Heat Recovery System (EHRS) portion of the center muffler assembly. Follow the procedure outlined in this bulletin to repair this condition after confirming EHRS is leaking internally.
23-01-093H2023-12-22. Service bulletin. This bulletin provides the procedure to update the Hybrid Control Unit (HCU) and Dual Automatic Temperature Control (DATC) software to help improve coolant flow to the Exhaust Heat Recovery System (EHRS).
23-AT-006H-22023-11-30. Service bulletin. This TSB provides information to diagnose the push button shifter operation.
23-01-054H2023-10-02. Service bulletin. Certain 2013-2015MY Sonata Hybrid (YF HEV) vehicles may exhibit warning lights on while driving and the inability to restart the ignition after it has been turned off when stopped. TSB 23-01-054H outlines the service process to inspect the fuse and safety plug assembly, and replace the parts as needed. This best practice provides helpful tips and key notes when carrying out this service campaign.