Hyundai Sonata Service Bulletins (2021)
111 manufacturer communications on file.
- October 27, 2026•Document ID: 11038798Service Bulletin/Repair InstructionsELECTRICAL SYSTEM
- Mfr Comm. #:
- 26-GI-003H
- Date Added:
- October 30, 2026
- Manufacturer:
- HYUNDAI
SummaryThis bulletin provides information related to the navigation and head unit software changes introduced in the 2026 2nd Navigation Map and Software Update. The changes may vary depending on vehicle type, model, and navigation system. Refer to the 2026 2nd Navigation Map and Software Update Key Improvements and Additional Improvements tables in this TSB for a list of specific changes. The software can be downloaded via Navigation Updater (NAU) and updated by USB.
Associated Products (64)2026 Hyundai Ioniq 5 N2026 Hyundai Ioniq 92026 Hyundai Kona2026 Hyundai Palisade2026 Hyundai Santa Cruz2026 Hyundai Santa Fe2026 Hyundai Sonata2026 Hyundai Tucson2025 Hyundai Elantra2025 Hyundai Elantra N2025 Hyundai Ioniq 5 N2025 Hyundai Ioniq 62025 Hyundai Kona2025 Hyundai Palisade2025 Hyundai Santa Cruz2025 Hyundai Santa Fe2025 Hyundai Sonata2025 Hyundai Tucson2025 Hyundai Venue2024 Hyundai Elantra+ 44 moreAssociated Documents - October 15, 2026•Document ID: 11038722Service Bulletin/Repair InstructionsBACK OVER PREVENTION: WARNINGS
- Mfr Comm. #:
- 26-GI-004H
- Date Added:
- October 28, 2026
- Manufacturer:
- HYUNDAI
SummarySome Hyundai vehicles may be equipped with a parking distance warning (PDW) sensor(s) that may trigger various DTCs and display warning messages on the instrument cluster, resulting in the PDW sensor(s) failing to detect nearby objects or triggering multiple false alarms. This condition may be a result of external damage to the PDW sensor membrane or sensor cover from rock chips or road debris, a collision, or previous vehicle repairs or modifications.
Associated Products (183)2027 Hyundai Ioniq 52027 Hyundai Kona2027 Hyundai Palisade2027 Hyundai Santa Fe2026 Hyundai Elantra2026 Hyundai Elantra N2026 Hyundai Ioniq 52026 Hyundai Ioniq 5 N2026 Hyundai Ioniq 92026 Hyundai Kona2026 Hyundai Palisade2026 Hyundai Santa Fe2026 Hyundai Sonata2026 Hyundai Tucson2025 Hyundai Elantra2025 Hyundai Elantra N2025 Hyundai Ioniq 52025 Hyundai Ioniq 5 N2025 Hyundai Ioniq 62025 Hyundai Kona+ 163 moreAssociated Documents - October 8, 2026•Document ID: 11038458Service Bulletin/Repair InstructionsENGINE
- Mfr Comm. #:
- 26-EM-016H TSB
- Date Added:
- October 14, 2026
- Manufacturer:
- HYUNDAI
SummarySome vehicles equipped with internal combustion engines may exhibit higher-than-expected engine oil consumption. This bulletin outlines the combustion chamber cleaning procedure for vehicles diagnosed with this condition. All internal combustion engines consume some engine oil during normal operation, depending on driving conditions and mileage, and this procedure should only be performed when deemed necessary based on inspection and diagnosis of the vehicle as outlined in TSB 26-EM-015H, Engine Oil Consumption – Inspection & Repair Guidelines, or the latest revision.
Associated Products (174)2027 Hyundai Kona2027 Hyundai Santa Fe2026 Hyundai Elantra2026 Hyundai Elantra N2026 Hyundai Kona2026 Hyundai Santa Fe2026 Hyundai Sonata2026 Hyundai Tucson2025 Hyundai Elantra2025 Hyundai Elantra N2025 Hyundai Kona2025 Hyundai Santa Fe2025 Hyundai Sonata2025 Hyundai Tucson2024 Hyundai Elantra2024 Hyundai Elantra N2024 Hyundai Kona2024 Hyundai Santa Fe2024 Hyundai Sonata2024 Hyundai Tucson+ 154 moreAssociated Documents - October 7, 2026•Document ID: 11038456Service Bulletin/Repair InstructionsENGINE
- Mfr Comm. #:
- 26-EM-015H TSB
- Date Added:
- October 13, 2026
- Manufacturer:
- HYUNDAI
SummaryCertain vehicles equipped with internal combustion engines may exhibit higher-than-expected engine oil consumption. This bulletin provides the inspection and repair procedures for vehicles exhibiting this condition. All internal combustion engines consume engine oil as part of normal engine operation. Oil consumption rates may vary based on mileage, operating conditions, driving habits, and maintenance history. Hyundai recommends following the prescribed maintenance schedule and periodically checking the engine oil level using the dipstick to maintain proper engine oil level.
Associated Products (252)2027 Hyundai Kona2027 Hyundai Palisade2027 Hyundai Santa Fe2026 Hyundai Elantra2026 Hyundai Elantra N2026 Hyundai Kona2026 Hyundai Palisade2026 Hyundai Santa Cruz2026 Hyundai Santa Fe2026 Hyundai Sonata2026 Hyundai Tucson2026 Hyundai Venue2025 Hyundai Elantra2025 Hyundai Elantra N2025 Hyundai Kona2025 Hyundai Palisade2025 Hyundai Santa Cruz2025 Hyundai Santa Fe2025 Hyundai Sonata2025 Hyundai Tucson+ 232 moreAssociated Documents - June 5, 2026•Document ID: 11033840Service Bulletin/Repair InstructionsPOWER TRAIN
- Mfr Comm. #:
- 26-AT-005H TSB
- Date Added:
- June 16, 2026
- Manufacturer:
- HYUNDAI
SummaryThis bulletin provides information related to a Transmission Control Unit (TCU) software update for some vehicles equipped with an 8-speed wet dual clutch transmission (8WDCT). The software update revises the touch point learning variation, improving drivability and judder symptoms. Some 8WDCTs (indicated by a new part number) received an updated clutch spring. The correct TCU software update must be matched with the correct corresponding 8WDCT hardware, otherwise, drivability concerns may occur. This service procedure should be performed prior to any 8WDCT replacements done for drivability/judder concerns.
Associated Products (14)Associated Documents - April 18, 2026•Document ID: 11031400Service Bulletin/Repair InstructionsENGINE; ELECTRICAL SYSTEM
- Mfr Comm. #:
- 26-EE-003H TSB
- Date Added:
- April 21, 2026
- Manufacturer:
- HYUNDAI
SummarySome vehicles may exhibit difficulty starting in cold weather. This bulletin provides the procedure to perform an inspection on the starter magnetic switch for potential freezing and, if necessary, replace the starter magnetic switch (solenoid) assembly.
Associated Products (39)2026 Hyundai Venue2025 Hyundai Kona2024 Hyundai Kona2024 Hyundai Tucson2024 Hyundai Venue2023 Hyundai Elantra2023 Hyundai Kona2023 Hyundai Santa Fe2023 Hyundai Sonata2023 Hyundai Tucson2023 Hyundai Venue2022 Hyundai Elantra2022 Hyundai Kona2022 Hyundai Santa Fe2022 Hyundai Sonata2022 Hyundai Tucson2022 Hyundai Veloster2022 Hyundai Venue2021 Hyundai Elantra2021 Hyundai Kona+ 19 moreAssociated Documents - April 10, 2026•Document ID: 11032523OtherAIR BAGS
- Mfr Comm. #:
- DTN DL
- Date Added:
- May 8, 2026
- Manufacturer:
- GENESIS
SummaryThe National Highway Traffic Safety Administration (NHTSA) has identified the presence of substandard and dangerous driver’s-side airbag inflators manufactured by Jilin Province Detiannuo Automobile Safety System Co., Ltd. (DTN). These inflators were not supplied, approved, or authorized by the vehicle manufacturers and have primarily been found in vehicles that previously experienced a crash and underwent airbag replacement using non-genuine parts. These dangerous inflators have ruptured during deployment, posing a serious risk of injury or death due to metal fragments entering the vehicle cabin. To date, Hyundai is aware of three people who have died while driving a Hyundai vehicle with one of these substandard replacement airbag inflators that deployed in what likely would have been a survivable crash. NHTSA has issued a public advisory urging vehicle owners and service professionals to have vehicles inspected if there is reason to believe that a non-genuine replacement airbag may have been installed. Vehicles with salvage or rebuilt titles, prior airbag deployments, or unknown repair histories may present a higher risk. NHTSA strongly cautions against self-inspection by vehicle owners and recommends inspection by trained technicians.
Associated Products (325)2026 Genesis G702026 Genesis G802026 Genesis G902026 Genesis GV602026 Genesis GV702026 Genesis GV802026 Hyundai Elantra2026 Hyundai Elantra N2026 Hyundai Ioniq 52026 Hyundai Ioniq 5 N2026 Hyundai Ioniq 62026 Hyundai Ioniq 6 N2026 Hyundai Ioniq 92026 Hyundai Kona2026 Hyundai Nexo2026 Hyundai Palisade2026 Hyundai Santa Cruz2026 Hyundai Santa Fe2026 Hyundai Sonata2026 Hyundai Tucson+ 305 moreAssociated Documents - April 10, 2026•Document ID: 11032522OtherAIR BAGS
- Mfr Comm. #:
- DTN DCS
- Date Added:
- May 8, 2026
- Manufacturer:
- HYUNDAI
SummaryThe National Highway Traffic Safety Administration (NHTSA) has issued an urgent safety advisory regarding dangerous, counterfeit driver‑side airbag inflators manufactured by Jilin Province Detiannuo Automobile Safety System Co., Ltd. (DTN), that have been identified in U.S. vehicles following prior crashes, theft, or non‑certified airbag replacements. These inflators are not approved for use, may rupture during deployment, and have caused serious injuries and fatalities. Please see attached announcement, provided by NHTSA, for more details.
Associated Products (325)2026 Genesis G702026 Genesis G802026 Genesis G902026 Genesis GV602026 Genesis GV702026 Genesis GV802026 Hyundai Elantra2026 Hyundai Elantra N2026 Hyundai Ioniq 52026 Hyundai Ioniq 5 N2026 Hyundai Ioniq 62026 Hyundai Ioniq 6 N2026 Hyundai Ioniq 92026 Hyundai Kona2026 Hyundai Nexo2026 Hyundai Palisade2026 Hyundai Santa Cruz2026 Hyundai Santa Fe2026 Hyundai Sonata2026 Hyundai Tucson+ 305 moreAssociated Documents - March 3, 2026•Document ID: 11029937Service Bulletin/Repair InstructionsPOWER TRAIN
- Mfr Comm. #:
- 26-AT-001H TSB
- Date Added:
- March 11, 2026
- Manufacturer:
- HYUNDAI
SummarySome Santa Cruz (NXT), Santa Fe (TMA, MX5A), and Sonata (DN8A) models may require replacement of the 8-speed wet dual clutch transmission (8WDCT) when the vehicle sets one of the high pressure electric oil pump (HP EOP) DTCs listed below. This bulletin provides instructions to replace the 8WDCT.
Associated Products (11)Associated Documents - February 25, 2026•Document ID: 11029906Service Bulletin/Repair InstructionsFORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL; EXTERIOR LIGHTING; FORWARD COLLISION AVOIDANCE: WARNINGS; LANE DEPARTURE: ASSIST; LANE DEPARTURE: WARNING
- Mfr Comm. #:
- 26-AD-001H TSB
- Date Added:
- March 7, 2026
- Manufacturer:
- HYUNDAI
SummarySome 2019MY and newer vehicles equipped with a front view camera may illuminate certain warning lights and trigger DTC C272246 fault code for the front camera. In the following cases, the front camera auto-calibration range may be exceeded while driving: • If the front camera is not properly installed and is completely or partially detached. • In case of excessive changes affecting the vehicle's balance (e.g., loading excessively heavy cargo in a specific location of the vehicle, or significant under-inflation of the tires). • Specific road conditions affecting the vehicle's balance (e.g., excessive road crown) This TSB provides instructions on how to service the vehicle when the front camera related warning light(s) are triggered due to system out of calibration (DTC_C272246).
Associated Products (43)2026 Hyundai Elantra2026 Hyundai Elantra N2026 Hyundai Ioniq 52026 Hyundai Ioniq 5 N2026 Hyundai Ioniq 62026 Hyundai Ioniq 6 N2026 Hyundai Kona2026 Hyundai Santa Cruz2026 Hyundai Sonata2026 Hyundai Tucson2025 Hyundai Elantra2025 Hyundai Elantra N2025 Hyundai Ioniq 52025 Hyundai Ioniq 5 N2025 Hyundai Ioniq 62025 Hyundai Kona2025 Hyundai Santa Cruz2025 Hyundai Sonata2025 Hyundai Tucson2024 Hyundai Elantra+ 23 moreAssociated Documents - February 5, 2026•Document ID: 11028666Service Bulletin/Repair InstructionsENGINE
- Mfr Comm. #:
- 26-EM-003H TSB
- Date Added:
- February 10, 2026
- Manufacturer:
- HYUNDAI
SummarySome Sonata (DN8, DN8A) vehicles may have DTCs P218100, P2181F0, and/or P2181F1 (Cooling System Performance) set in the Engine Control Module, resulting in an illuminated Check Engine warning lamp. Follow the procedure in this TSB to replace the Integrated Thermal Management (ITM) module and update both the Engine Control Module (ECM) and Transmission Control Module (TCM) if applicable. Follow the flowchart in this TSB to update the appropriate modules.
Associated Products (4)Associated Documents - January 7, 2026•Document ID: 11027589Service Bulletin/Repair InstructionsFUEL/PROPULSION SYSTEM
- Mfr Comm. #:
- 26-FL-001H TSB
- Date Added:
- January 13, 2026
- Manufacturer:
- HYUNDAI
SummarySome vehicles equipped with a 2.5L GDI Theta III engine (non-Turbo) may exhibit one or more misfire DTCs due to the GDI fuel injectors leaking internally. This may be caused by internal filter breakage in the injector. Follow the procedure in this TSB to replace all 4 injectors on affected vehicles, using the kit in the Parts Information section.
Associated Products (8)Associated Documents - December 18, 2025•Document ID: 11027036Service Bulletin/Repair InstructionsENGINE
- Mfr Comm. #:
- 25-EM-007H TSB
- Date Added:
- January 6, 2026
- Manufacturer:
- HYUNDAI
SummarySome Elantra (CN7, CN7A), Kona (OS, SX2), and Sonata Hybrid (DN8 HEV) vehicles equipped with 2.0L engines may illuminate a warning lamp for DTC P218100 (Cooling System Performance) related to the Integrated Thermal-Management Module (ITM). Follow the service procedure in this bulletin to install a spring onto the thermostat within the ITM, in order to prevent premature opening, and perform an ECU software update on affected vehicles.
Associated Products (11)Associated Documents - November 6, 2025•Document ID: 11025476Service Bulletin/Repair InstructionsEXTERIOR LIGHTING
- Mfr Comm. #:
- 25-BD-012H TSB
- Date Added:
- November 12, 2025
- Manufacturer:
- HYUNDAI
SummaryThis bulletin provides information regarding condensation related to the accumulated moisture in the headlamp, rear combination lamp, daytime running lamp (DRL), or fog lamp. This TSB illustrates the various causes of condensation inside the lamp assembly. Lamp assembly replacement is NOT necessary in most cases. This condition can be eliminated by turning on the lamps with the engine running for several minutes or during normal driving operation.
Associated Products (327)2026 Genesis G702026 Genesis G802026 Genesis G902026 Genesis GV702026 Genesis GV802026 Hyundai Ioniq 92026 Hyundai Kona2026 Hyundai Palisade2026 Hyundai Santa Cruz2026 Hyundai Santa Fe2026 Hyundai Sonata2026 Hyundai Tucson2026 Hyundai Venue2025 Genesis G702025 Genesis G802025 Genesis G902025 Genesis GV602025 Genesis GV702025 Genesis GV802025 Hyundai Elantra+ 307 moreAssociated Documents - September 30, 2025•Document ID: 11023692Service Bulletin/Repair InstructionsELECTRICAL SYSTEM
- Mfr Comm. #:
- 25-BE-020H TSB
- Date Added:
- October 3, 2025
- Manufacturer:
- HYUNDAI
SummaryThis bulletin provides information related to the changes introduced in the 2025 1st Navigation Map and Software Update. The changes may vary depending on vehicle type, model, and navigation system as described in this TSB.
Associated Products (59)2026 Hyundai Venue2025 Hyundai Elantra2025 Hyundai Ioniq 5 N2025 Hyundai Ioniq 62025 Hyundai Kona2025 Hyundai Palisade2025 Hyundai Santa Cruz2025 Hyundai Santa Fe2025 Hyundai Sonata2025 Hyundai Tucson2025 Hyundai Venue2024 Hyundai Elantra2024 Hyundai Elantra N2024 Hyundai Ioniq 52024 Hyundai Ioniq 62024 Hyundai Kona2024 Hyundai Palisade2024 Hyundai Santa Cruz2024 Hyundai Santa Fe2024 Hyundai Sonata+ 39 moreAssociated Documents - August 21, 2025•Document ID: 11022097Service CampaignELECTRICAL SYSTEM
- Mfr Comm. #:
- 25-01-010H-1 9B4 OL
- Date Added:
- August 22, 2025
- Manufacturer:
- HYUNDAI
SummaryCertain Hyundai vehicles may exhibit a warning light with Diagnostic Trouble Code (“DTC”) P1BB20 due to a battery over voltage condition.
Associated Products (9)Associated Documents - July 16, 2025•Document ID: 11020798Service CampaignELECTRICAL SYSTEM
- Mfr Comm. #:
- 25-01-010H-1 TSB
- Date Added:
- July 22, 2025
- Manufacturer:
- HYUNDAI
SummaryThis bulletin provides the procedure to update the software for the Battery Management System (BMS) on certain Elantra Hybrid (CN7 HEV), Sonata Hybrid (DN8 HEV), and Tucson Hybrid (NX4 HEV) vehicles that may exhibit a warning light with DTC P1BB200 and enter Limp Mode.
Associated Products (9)Associated Documents - July 16, 2025•Document ID: 11020799Service CampaignELECTRICAL SYSTEM
- Mfr Comm. #:
- 25-01-010H-1 DN
- Date Added:
- July 22, 2025
- Manufacturer:
- HYUNDAI
SummaryCertain Elantra Hybrid (CN7 HEV), Sonata Hybrid (DN8 HEV), and Tucson Hybrid (NX4 HEV) vehicles may exhibit a warning light due to DTC Code P1BB20 (12V Lithium Battery Cell Voltage High). The California Air Resources Board has determined that these vehicles may be releasing air pollutants which exceed Federal and California standards.
Associated Products (9)Associated Documents - May 30, 2025•Document ID: 11018891Service Bulletin/Repair InstructionsPOWER TRAIN
- Mfr Comm. #:
- 25-AT-001H TSB
- Date Added:
- June 3, 2025
- Manufacturer:
- HYUNDAI
SummaryCertain Santa Fe (TMA) and Sonata (DN8/DN8A) vehicles equipped with 8-speed dual clutch transmissions (8DCT) may exhibit one of the DTCs listed below, related to the high pressure electric oil pump (HP EOP). Follow the procedures in this TSB to update the Transmission Control Unit (TCU) to the latest sensorless logic on affected vehicles, and then perform air bleeding and transmission learning.
Associated Products (5)Associated Documents - May 16, 2025•Document ID: 11018876Service Bulletin/Repair InstructionsELECTRICAL SYSTEM
- Mfr Comm. #:
- 25-BE-002H TSB
- Date Added:
- June 3, 2025
- Manufacturer:
- HYUNDAI
SummaryThis bulletin provides information related to the changes introduced in the 2024 2nd Navigation Map and Software Update. The changes may vary depending on vehicle type, model, and navigation system. Refer to the 2024 2nd Navigation Map and Software Update Improvements section in this TSB for a list of specific changes. The software can be downloaded via Navigation Updater (NAU) and updated by USB. The NAU website is https://update.hyundai.com/US/EN/navigationUpdate. For certain models equipped with a relevant Bluelink package, the software may be downloaded and applied via OTA update.
Associated Products (57)2026 Hyundai Venue2025 Hyundai Elantra2025 Hyundai Ioniq 5 N2025 Hyundai Ioniq 62025 Hyundai Kona2025 Hyundai Palisade2025 Hyundai Santa Cruz2025 Hyundai Santa Fe2025 Hyundai Sonata2025 Hyundai Tucson2024 Hyundai Elantra2024 Hyundai Elantra N2024 Hyundai Ioniq 52024 Hyundai Ioniq 62024 Hyundai Kona2024 Hyundai Palisade2024 Hyundai Santa Cruz2024 Hyundai Santa Fe2024 Hyundai Sonata2024 Hyundai Tucson+ 37 moreAssociated Documents