Hyundai Sonata Service Bulletins
1,006 manufacturer communications on file.
- May 8, 2025•Document ID: 11018574Service CampaignELECTRICAL SYSTEM
- Mfr Comm. #:
- 25-01-018H-1 TSB
- Date Added:
- May 27, 2025
- Manufacturer:
- HYUNDAI
SummarySome vehicles may exhibit a loss of connectivity or interruptions in the middle of using Bluelink functions. This may be due to an occasional disconnection on Verizon’s communication network. Follow the procedures in this bulletin to verify Bluelink Data Communication Unit (DCU) network connection and if needed, reset the DCU in Dealer Mode to resolve the connection.
Associated Products (10)Associated Documents - April 30, 2025•Document ID: 11017474Service Bulletin/Repair InstructionsENGINE; ELECTRICAL SYSTEM
- Mfr Comm. #:
- 25-EE-002H
- Date Added:
- May 2, 2025
- Manufacturer:
- HYUNDAI
SummaryCertain 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 instructions to replace the multi-fuse, reroute the damaged wiring using the blower wiring kit, and replace the fuse label.
Associated Products (4)Associated Documents - April 25, 2025•Document ID: 11017341Service Bulletin/Repair InstructionsELECTRICAL SYSTEM
- Mfr Comm. #:
- 25-EE-002H TSB
- Date Added:
- April 30, 2025
- Manufacturer:
- HYUNDAI
SummaryCertain 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 instructions to replace the multi-fuse, reroute the damaged wiring using the blower wiring kit, and replace the fuse label.
Associated Products (4)Associated Documents - April 7, 2025•Document ID: 11017111Service CampaignELECTRICAL SYSTEM
- Mfr Comm. #:
- 25-01-024H EM
- Date Added:
- April 18, 2025
- Manufacturer:
- HYUNDAI
SummarySome 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 communication network. If you are experiencing issues with remote commands, or other Bluelink services, please see the instructions below to reestablish the connection via the AVN pinhole reset method.
Associated Products (97)2026 Hyundai Venue2025 Hyundai Elantra2025 Hyundai Elantra N2025 Hyundai Ioniq 52025 Hyundai Ioniq 62025 Hyundai Nexo2025 Hyundai Palisade2025 Hyundai Venue2024 Hyundai Elantra2024 Hyundai Elantra N2024 Hyundai Ioniq 52024 Hyundai Ioniq 62024 Hyundai Nexo2024 Hyundai Palisade2024 Hyundai Tucson2024 Hyundai Venue2023 Hyundai Elantra2023 Hyundai Elantra N2023 Hyundai Ioniq 52023 Hyundai Ioniq 6+ 77 moreAssociated Documents - April 4, 2025•Document ID: 11016996Service Bulletin/Repair InstructionsELECTRICAL SYSTEM
- Mfr Comm. #:
- 25-BE-008H TSB
- Date Added:
- April 15, 2025
- Manufacturer:
- HYUNDAI
SummaryCertain vehicles (See Applicable Vehicles List below) equipped with the 12-inch instrument cluster display and separate Instrument Cluster Module require software verification PRIOR to odometer mileage writing. If the Cluster Module does not have the latest software, the incorrect mileage may be written to the new module. This bulletin provides information to confirm the Instrument Cluster Module is equipped with the latest software version prior to using the GDS tablet to write the odometer mileage.
Associated Products (9)Associated Documents - March 18, 2025•Document ID: 11015936Service CampaignELECTRICAL SYSTEM
- Mfr Comm. #:
- 25-01-024H TSB
- Date Added:
- March 25, 2025
- Manufacturer:
- HYUNDAI
SummarySome 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 communication network. Follow the procedure in this TSB to reestablish the connection via the AVN pinhole reset method.
Associated Products (96)2026 Hyundai Venue2025 Hyundai Elantra2025 Hyundai Elantra N2025 Hyundai Ioniq 52025 Hyundai Ioniq 62025 Hyundai Nexo2025 Hyundai Palisade2025 Hyundai Venue2024 Hyundai Elantra2024 Hyundai Elantra N2024 Hyundai Ioniq 52024 Hyundai Ioniq 62024 Hyundai Nexo2024 Hyundai Palisade2024 Hyundai Tucson2024 Hyundai Venue2023 Hyundai Elantra2023 Hyundai Elantra N2023 Hyundai Ioniq 52023 Hyundai Ioniq 6+ 76 moreAssociated Documents - March 13, 2025•Document ID: 11015669Service CampaignENGINE
- Mfr Comm. #:
- 25-01-023H TSB
- Date Added:
- March 17, 2025
- Manufacturer:
- HYUNDAI
SummaryThe exhaust gas recirculation (EGR) valve assembly in certain vehicles (listed below) may contain a sensor that was contaminated with solder flux during manufacturing, which could potentially result in an electrical short. An electrical short within the EGR valve could lead to a Malfunction Indicator lamp (MIL) illumination (P0405, P0642, P0652, P0404/P049D/P240F). Follow the information in this bulletin to replace the EGR valve assembly and gasket.
Associated Products (2)Associated Documents - March 13, 2025•Document ID: 11015668Service CampaignENGINE
- Mfr Comm. #:
- 25-01-023H DN
- Date Added:
- March 17, 2025
- Manufacturer:
- HYUNDAI
SummaryThe exhaust gas recirculation (EGR) valve assembly in certain vehicles may contain a sensor that was contaminated with solder flux during manufacturing, which could potentially result in an electrical short. An electrical short within the EGR valve could lead to a Malfunction Indicator lamp (MIL) illumination (P0405, P0642, P0652, P0404/P049D/P240F). The California Air Resources Board has determined that these vehicles may be releasing air pollutants which exceed Federal and California standards.
Associated Products (2)Associated Documents - February 28, 2025•Document ID: 11014928Service CampaignELECTRICAL SYSTEM
- Mfr Comm. #:
- 25-01-018H TSB
- Date Added:
- March 5, 2025
- Manufacturer:
- HYUNDAI
SummarySome vehicles may exhibit a loss of connectivity or interruptions in the middle of using Bluelink functions. This may be due to an occasional disconnection on Verizon’s communication network. Follow the procedures in this bulletin to verify Bluelink Data Communication Unit (DCU) network connection and if needed, reset the DCU in Dealer Mode to resolve the connection.
Associated Products (9)Associated Documents - February 22, 2025•Document ID: 11014445Service Bulletin/Repair InstructionsELECTRICAL SYSTEM
- Mfr Comm. #:
- 25-BE-003H DN
- Date Added:
- February 25, 2025
- Manufacturer:
- HYUNDAI
SummaryHyundai Motor America has noted that several vehicles were impacted by a telecommunications outage that occurred on Sunday, February 9th , resulting in the potential loss of connectivity or interruptions when attempting to use Bluelink functions. Voice Recognition, Sports Media, and Weather will not be available. Dealer stock and retailed vehicles are both affected. If a customer calls in and their vehicle is experiencing issues related to Bluelink, please have them come into the dealership to assist with resetting the Bluelink Data Communication Unit (DCU) and utilize TSB 25-BE-003H posted on Hyundai Tech Info.
Associated Products (8)Associated Documents - February 15, 2025•Document ID: 11014444Service Bulletin/Repair InstructionsELECTRICAL SYSTEM
- Mfr Comm. #:
- 25-BE-003H TSB
- Date Added:
- February 25, 2025
- Manufacturer:
- HYUNDAI
SummarySome vehicles may exhibit a loss of connectivity or interruptions in the middle of using Bluelink functions. This may be due to an occasional disconnection on Verizon’s communication network. Follow the procedures in this bulletin to reset the Connected Car Data Communication Unit (DCU) in Dealer Mode to resolve the connection.
Associated Products (9)Associated Documents - February 11, 2025•Document ID: 11014286Service Bulletin/Repair InstructionsFUEL/PROPULSION SYSTEM
- Mfr Comm. #:
- 25-01-010H DN
- Date Added:
- February 17, 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). Follow the procedure in TSB 25-01-010H (or latest version) to perform the update the Battery management System (BMS) software.
Associated Products (8)Associated Documents - February 11, 2025•Document ID: 11014285Service CampaignFUEL/PROPULSION SYSTEM
- Mfr Comm. #:
- 25-01-010H TSB
- Date Added:
- February 17, 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 P1BB20.
Associated Products (8)Associated Documents - January 25, 2025•Document ID: 11013237Service CampaignELECTRICAL SYSTEM
- Mfr Comm. #:
- 25-01-005H TSB
- Date Added:
- January 30, 2025
- Manufacturer:
- HYUNDAI
SummaryCertain vehicles listed below may have a Bluelink malfunction or not able to have Bluelink setup. This bulletin provides instructions to reset the network in Dealer Mode to prevent the Data Concentrator Unit (DCU) modem from experiencing a "Blue Link Not Open" error.
Associated Products (3)Associated Documents - January 9, 2025•Document ID: 11012819Service Bulletin/Repair InstructionsFUEL/PROPULSION SYSTEM
- Mfr Comm. #:
- 25-FL-001H
- Date Added:
- January 13, 2025
- 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 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 - January 3, 2025•Document ID: 11012362Service CampaignFUEL/PROPULSION SYSTEM
- Mfr Comm. #:
- 25-01-001H TSB
- Date Added:
- January 6, 2025
- Manufacturer:
- HYUNDAI
SummaryCertain 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 fuel tank, and update the ECU. If necessary, replace the check valve and/or fuel tank based on inspection results. The ECU Upgrade contains a revised DTC P14EE00 which supersedes P0451.
Associated Products (4)Associated Documents - January 3, 2025•Document ID: 11012361Service CampaignFUEL/PROPULSION SYSTEM
- Mfr Comm. #:
- 25-01-001H DBP
- Date Added:
- January 6, 2025
- Manufacturer:
- HYUNDAI
SummaryCertain 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 Unit (ECU). The California Air Resources Board has determined that these vehicles may be releasing air pollutants which exceed Federal and California standards.
Associated Products (4)Associated Documents - December 18, 2024•Document ID: 11012043Service Bulletin/Repair InstructionsPOWER TRAIN
- Mfr Comm. #:
- 24-AT-001H-1
- Date Added:
- December 21, 2024
- Manufacturer:
- HYUNDAI
SummaryThis bulletin provides the procedure for updating the automatic transmission TCU (Transmission Control Unit) software to improve shift quality, judder and hesitation when accelerating.
Associated Products (4)Associated Documents - December 14, 2024•Document ID: 11011841Service CampaignELECTRICAL SYSTEM
- Mfr Comm. #:
- 24-01-093H
- Date Added:
- December 14, 2024
- Manufacturer:
- HYUNDAI
SummaryCertain Sonata (DN8) and Sonata Hybrid (DN8 HEV) vehicles may exhibit DTC C2A274B due to the rear corner radar missing the outside temperature input from the ADAS sensor. Follow the procedures in this bulletin to input the external temperature from the cluster and correct the rear corner radar temperature software using GDS.
Associated Products (1)Associated Documents - December 10, 2024•Document ID: 11011830Service CampaignELECTRICAL SYSTEM
- Mfr Comm. #:
- 9B1 OL
- Date Added:
- December 13, 2024
- Manufacturer:
- HYUNDAI
SummaryThe subject vehicles may have Diagnostic Trouble Code (DTC) P0451 stored in the ECU, which could cause the Check Engine Lamp to come on.
Associated Products (4)Associated Documents