2023 Hyundai Sonata service bulletins & manufacturer communications

50 manufacturer communications are on file with NHTSA for the 2023 Hyundai Sonata. TSBs are repair guidance for dealers — they are not recalls, and repairs are not automatically free.

• This 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…
  26-AT-005H TSB · Technical service bulletin · Power Train · issued Jun 5, 2026
• This bulletin provides information related to the navigation and head unit software changes introduced in the 2026 1st Navigation Map and Software Update. The changes may vary depe…
  26-GI-002H TSB · Technical service bulletin · Electrical System · issued May 27, 2026
• Some 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 a…
  26-EE-003H TSB · Technical service bulletin · Electrical System · issued Apr 18, 2026
• The National Highway Traffic Safety Administration (NHTSA) has identified the presence of substandard and dangerous driver’s-side airbag inflators manufactured by Jilin Province De…
  DTN DL · Technical service bulletin · Air Bags · issued Apr 10, 2026
• The National Highway Traffic Safety Administration (NHTSA) has issued an urgent safety advisory regarding dangerous, counterfeit driver‑side airbag inflators manufactured by Jilin …
  DTN DCS · Technical service bulletin · Air Bags · issued Apr 10, 2026
• Some 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 cas…
  26-AD-001H TSB · Technical service bulletin · Forward Collision Avoidance · issued Feb 25, 2026
• Some 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 Eng…
  26-EM-003H TSB · Technical service bulletin · Engine · issued Feb 5, 2026
• Some 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 int…
  26-FL-001H TSB · Technical service bulletin · Fuel/propulsion System · issued Jan 7, 2026
• This bulletin provides information regarding condensation related to the accumulated moisture in the headlamp, rear combination lamp, daytime running lamp (DRL), or fog lamp. This …
  25-BD-012H TSB · Technical service bulletin · Exterior Lighting · issued Nov 6, 2025
• This 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 …
  25-BE-020H TSB · Technical service bulletin · Electrical System · issued Sep 30, 2025
• A software update is available for multiple vehicles equipped with either Display Audio 2.0V or the AVN 5th Gen Wide system.
  25-01-045H TSB · Service campaign · Electrical System · issued Jul 9, 2025
• This 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 …
  25-BE-002H TSB · Technical service bulletin · Electrical System · issued May 16, 2025
• Some vehicles may exhibit a loss of connectivity or interruptions in the middle of using Bluelink Service functions. This may be due to an irregular disconnection on Verizon’s comm…
  25-01-024H-1 TSB · Service campaign · Electrical System · issued May 8, 2025
• Certain Sonata (DN8) and Sonata (DN8A) vehicles may experience issues with the air conditioning due to damaged wiring in the engine room junction box. This bulletin provides instru…
  25-EE-002H · Technical service bulletin · Engine · issued Apr 30, 2025
• Certain Sonata (DN8) and Sonata (DN8A) vehicles may experience issues with the air conditioning due to damaged wiring in the engine room junction box. This bulletin provides instru…
  25-EE-002H TSB · Technical service bulletin · Electrical System · issued Apr 25, 2025
• Some vehicles may exhibit a loss of connectivity or interruptions in the middle of using Bluelink Service functions. This may be due to an irregular disconnection on Verizon's comm…
  25-01-024H EM · Service campaign · Electrical System · issued Apr 7, 2025
• Some vehicles may exhibit a loss of connectivity or interruptions in the middle of using Bluelink Service functions. This may be due to an irregular disconnection on Verizon’s comm…
  25-01-024H TSB · Service campaign · Electrical System · issued Mar 18, 2025
• Some vehicles equipped with a 2.5L GDI Theta III engine (non-Turbo) may exhibit one or more misfire DTCs due to the GDI injectors leaking internally. This may be caused by internal…
  25-FL-001H · Technical service bulletin · Fuel/propulsion System · issued Jan 9, 2025
• Certain 2021-2023MY Sonata (DN8) and 2020-2022MY Sonata (DN8A) vehicles may have DTC P0451 stored in the ECU. Follow this bulletin to inspect the check valve, fuel pump cover and f…
  25-01-001H TSB · Service campaign · Fuel/propulsion System · issued Jan 3, 2025
• Certain 2021-2023MY Sonata (DN8) and 2020-2022MY Sonata (DN8A) vehicles may have Diagnostic Trouble Code (DTC) P0451 (also known as DTC P14EE00) stored in the Electronic Control Un…
  25-01-001H DBP · Service campaign · Fuel/propulsion System · issued Jan 3, 2025
• The subject vehicles may have Diagnostic Trouble Code (DTC) P0451 stored in the ECU, which could cause the Check Engine Lamp to come on.
  9B1 OL · Service campaign · Electrical System · issued Dec 10, 2024
• Certain 2021-2023MY Sonata (DN8) and 2020-2022MY Sonata (DN8A) vehicles may have Diagnostic Trouble Code (DTC) P0451 stored in the Electronic Control Unit (ECU). The California Air…
  24-01-020H DBP · Service campaign · Fuel/propulsion System · issued Nov 14, 2024
• Certain 2021-2023MY Sonata (DN8) and 2020-2022MY Sonata (DN8A) vehicles may have DTC P0451 stored in the ECU. Follow this bulletin to inspect the check valve, fuel pump cover and f…
  24-01-020H TSB · Service campaign · Fuel/propulsion System · issued Nov 14, 2024
• A software update is available for multiple vehicles equipped with either Display Audio 2.0V or the AVN 5th Gen Wide system.
  24-01-045H-2 · Service campaign · Electrical System · issued Sep 12, 2024
• A software update is available for multiple vehicles equipped with either Display Audio 2.0V or the AVN 5th Gen Wide system.
  24-01-045H-1 · Service campaign · Electrical System · issued Aug 28, 2024
• Some vehicles equipped with the AVN 5th Gen Wide system may exhibit a condition where the radio app crashes frequently when entering radio mode and/or displays a message that reads…
  24-BE-001H-1 · Technical service bulletin · Electrical System · issued Jul 19, 2024
• A software update is available for multiple vehicles equipped with either Display Audio 2.0V or the AVN 5th Gen Wide system.
  24-01-045H · Technical service bulletin · Electrical System · issued Jun 12, 2024
• 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 Pag…
  24-AT-002H · Technical service bulletin · Power Train · issued Apr 9, 2024
• 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 op…
  24-FL-002H · Technical service bulletin · Engine and Engine Cooling · issued Feb 29, 2024
• This bulletin contains information about the proper removal of the windshield wiper blade protective cover on all models. If the protective cover is not removed correctly, there is…
  24-BD-001H · Technical service bulletin · Visibility/wiper · issued Feb 14, 2024
• Some vehicles equipped with the AVN 5th Gen Wide system may exhibit a condition where the radio app crashes frequently when entering radio mode and/or displays a message that reads…
  24-BE-001H · Technical service bulletin · Electrical System · issued Jan 10, 2024
• This TSB provides information to diagnose the push button shifter operation.
  23-AT-006H-2 · Technical service bulletin · Power Train · issued Nov 10, 2023
• This bulletin provides important checkpoint guidelines when performing engine oil and filter change services.
  23-EM-005H · Technical service bulletin · Engine and Engine Cooling · issued Oct 13, 2023
• This bulletin is issued to provide the extended battery diagnosis procedure using GDS-M. This battery diagnosis function displays the various battery-related faults such as: â ¢ In…
  23-EE-010H · Technical service bulletin · Engine and Engine Cooling · issued Sep 18, 2023
• If you are servicing an 8-speed front-wheel-drive vehicle equipped with automatic transaxle with one or more of the DTC or symptoms listed below, refer to the Service Procedure to …
  23-AT-008H-1 · Technical service bulletin · Power Train · issued Sep 14, 2023
• This bulletin outlines changes to the service procedure regarding the replacement of 8-speed wet dual clutch transmissions (8WDCT) and associated transmission control unit (TCU). T…
  23-AT-011H · Technical service bulletin · Power Train · issued Aug 28, 2023
• This bulletin provides information related to a Transmission Control Unit (TCU) software update for certain vehicles equipped with an 8-speed wet dual clutch transmissions (8WDCT) …
  23-AT-012H · Technical service bulletin · Power Train · issued Aug 28, 2023
• This TSB provides information to diagnose the push button shifter operation. If you are servicing a vehicle with any symptoms listed below or DTCs (listed on Page 2) , follow the S…
  23-AT-006H-1 · Technical service bulletin · Power Train · issued Aug 1, 2023
• If you are servicing an 8-speed DCT front-wheel-drive vehicle with the DTC or symptoms listed below, refer to the Service Procedure to diagnose the condition. â ¢ DIAGNOSTIC TROUBL…
  23-AT-009H · Technical service bulletin · Power Train · issued Jul 18, 2023
• This Service Information bulletin provides information on how to update the Apple Carplay software from Hyundaiâ s Navigation Updates page. The current version of Google Maps has 1…
  23-BE-007H · Technical service bulletin · Electrical System · issued Jul 17, 2023
• If you are servicing an 8-speed front-wheel-drive vehicle equipped with automatic transaxle with one or more of the DTC or symptoms listed below, refer to the Service Procedure to …
  23-AT-008H · Technical service bulletin · Power Train · issued Jul 11, 2023
• This bulletin provides the diagnostic procedure for the GDI injector(s) in certain 21-23MY Sonata, 21-22MY Santa Fe, certain 22MY Santa Cruz, and certain 21-23MY Tucson equipped wi…
  23-FL-002H-1 · Technical service bulletin · Engine and Engine Cooling · issued Jun 9, 2023
• This bulletin provides service procedures to prevent possible moisture intrusion of the HP EOP (High Flow Electric Oil Pump) connector when servicing the 8-speed wet dual clutch tr…
  23-AT-002H · Technical service bulletin · Power Train · issued May 10, 2023
• Hyundai applies a Paint Protection Film (PPF) on new vehicles before delivery to dealerships. It provides a barrier between the paint and contaminants, such as rail dust, acid rain…
  23-BD-007H · Technical service bulletin · Structure · issued Apr 24, 2023
• This bulletin provides the procedure to repair poor pin tension at joint connector JE102 in certain Sonata (1.6 T-GDI engine) with one or more DTC.
  23-EE-005H · Technical service bulletin · Engine and Engine Cooling · issued Apr 7, 2023
• This bulletin provides the procedure to repair poor pin tension at joint connector JE202 in certain Sonata (2.5L GDI engine) with one or more DTC.
  23-EE-006H · Technical service bulletin · Engine and Engine Cooling · issued Apr 7, 2023
• If you are servicing an 8-speed vehicle with a â Check Engineâ light on and one or more of the DTC listed, follow the service procedure and replace the related solenoid and harness…
  23-AT-003H · Technical service bulletin · Engine and Engine Cooling · issued Apr 6, 2023
• This bulletin provides the diagnostic procedure for the GDI injector(s) in certain 21-23MY Sonata, 21-22MY Santa Fe, certain 22MY Santa Cruz, and certain MY21-23 Tucson equipped wi…
  23-FL-002H · Technical service bulletin · Engine and Engine Cooling · issued Mar 23, 2023
• This bulletin provides information related to the ECU software update for Sonata Hybrid (DN8 HEV) vehicles to revise the logic for the following DTC : â ¢ DTC P00B7 â Engine Coolan…
  23-01-023H · Technical service bulletin · Engine and Engine Cooling · issued Mar 20, 2023
• This bulletin provides information regarding condensation related to the accumulated moisture in the headlamp, rear combination lamp, daytime running lamp (DRL), or fog lamp. This …
  23-BD-002H · Technical service bulletin · Visibility · issued Jan 30, 2023