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Service bulletins for the 2021 Hyundai Ioniq

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.

33 on file from NHTSA, as of 2026-10-19.

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Only bulletins with type: Service bulletin are shown. Show all

Bulletins, newest first
26-EM-016H TSB2026-10-14. Service bulletin. ENGINE. Some 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.
26-EM-015H TSB2026-10-13. Service bulletin. ENGINE. Certain 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.
25-BD-012H TSB2025-11-12. Service bulletin. EXTERIOR LIGHTING. 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 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.
25-BE-020H TSB2025-10-03. Service bulletin. ELECTRICAL SYSTEM. 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 navigation system as described in this TSB.
25-BE-002H TSB2025-06-03. Service bulletin. ELECTRICAL SYSTEM. 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 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.
24-EV-005H2024-08-07. Service bulletin. FUEL/PROPULSION SYSTEM. Certain 2020-21MY IONIQ Electric (AE EV) vehicles may experience a condition of EV warning light ON with DTC P1AA600 – P1AB000. If any of the DTC’s listed below are found, the Battery System Assembly (BSA) will be replaced, and the Battery Management System (BMS) software may need to be updated.
24-EV-001H2024-04-02. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides the procedure to update the ECU software on certain 2021-2022MY IONIQ Plug-in Hybrid (AE PHEV) vehicles that may exhibit a warning light with DTC U1341 due to communication issues with the Integrated Electronic Brake (IEB) during charging in IG3 mode. Follow the procedure in this TSB to update the ECU software logic. • DTC Info: U1341 - ECU-IEB Communication Delay
24-BD-001H2024-03-05. Service bulletin. VISIBILITY; VISIBILITY/WIPER. 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 a possibility of the rubber insert and rail spring becoming partially separated on the inner side of the wiper blade, which could lead to poor wiping performance and/or possible scratching of the windshield glass. Follow the procedure in this bulletin to properly remove the windshield wiper blade protective cover on all new wiper blades.
23-EM-005H2023-12-15. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin provides important checkpoint guidelines when performing engine oil and filter change services.
23-01-072H2023-10-02. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM:SOFTWARE. This bulletin provides the procedure to update the Hybrid Control Unit (HCU) / Low DC/DC Converter (LDC) software logic to eliminate internal P-DTCs (that are not viewable) in certain 2019-2021MY IONIQ Hybrid (AE HEV) and 2021MY IONIQ Plug-in Hybrid (AE PHEV) vehicles.
23-BE-007H2023-08-02. Service bulletin. EQUIPMENT:ELECTRICAL:INFOTAINMENT:SOFTWARE; ELECTRICAL SYSTEM. This Service Information bulletin provides information on how to update the Apple Carplay software from Hyundai’s Navigation Updates page. The current version of Google Maps has 10 times the data transmission compared to the previous version. As a countermeasure, an update with a frame skip logic has been added to resolve the data congestion with Google Maps.
23-01-049H2023-06-30. Service bulletin. ENGINE AND ENGINE COOLING; POWER TRAIN. This bulletin provides instructions to correct a condition with BSC-1 blue coolant flow restriction by debris causing abnormal high EWP (electric water pump) speed in certain 2020-21MY Ioniq Electric (AE EV) and 2019-22 Kona Electric (OS EV) models. Vehicle symptoms may include "Coolant supplement” or “Refill Inverter Coolant" warning light On. No related DTC are found stored. Normal inverter coolant reservoir tank level is confirmed. Special tools are required for this campaign to flush and clean debris from different cooling system circuits. The coolant will be replaced by updated BSC-2 low conductivity blue coolant.
23-BD-007H2023-05-04. Service bulletin. STRUCTURE:BODY. 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, and industrial fallout. In rare cases, the paint can become clouded under the PPF. These spots are the result of moisture trapped between the PPF and the paint.
23-BR-001H2023-05-02. Service bulletin. PARKING BRAKE. When servicing any of the specified vehicles below with the corresponding DTCs, C2416, “Motor Short or Open – LH (EPB)” or C2417 “Motor Short or Open – RH (EPB)”, follow the step-by-step procedures in this bulletin.
23-BD-002H2023-02-02. Service bulletin. VISIBILITY. 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 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.
22-GI-006H2022-08-05. Service bulletin. TIRES. Effective June 2, 2008, Federal Motor Vehicle Safety Standard 110 (FMVSS 110) established a threshold for correcting load carrying capacity information indicated on tire placards when vehicle weight has been increased before retail sale. This limit is the lesser of 1.5% of GVWR or 100 pounds. If the total added weight exceeds the lesser of the limit, a label must be added to the driver-side B-pillar within 25mm (1 inch) of the original tire placard.
22-EM-010H2022-08-05. Service bulletin. ENGINE AND ENGINE COOLING. Follow the guidelines outlined in this bulletin to inspect and clean or replace certain components of the engine intake system accordingly during engine short block or sub-assembly replacement.
218/231 amend2022-07-09. Service bulletin. STEERING. Certain vehicles may develop a bearing noise within the Motor Driven Power Steering (MDPS) column worm shaft assembly. If bearing noise is heard, follow the procedure in this bulletin to replace the worm shaft bearing.
22-HC-001H2022-06-10. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. If you are servicing an applicable model with Hybrid Drive Motor (Traction Motor) improper operation or any DTC listed in the related shop manual, Motor Control System, refer to the shop manual for diagnosis. If the diagnosis indicates a faulty hybrid drive motor, refer to the Service Procedure and replace the hybrid drive motor.
22-ST-005H2022-05-10. Service bulletin. STEERING. Certain vehicles may develop a bearing noise within the Motor Driven Power Steering (MDPS) column worm shaft assembly. If bearing noise is heard, follow the procedure in this bulletin to replace the worm shaft bearing.
22-ST-005H2022-05-10. Service bulletin. STEERING. Certain vehicles may develop a bearing noise within the Motor Driven Power Steering (MDPS) column worm shaft assembly. If bearing noise is heard, follow the procedure in this bulletin to replace the worm shaft bearing.
22-01-019H2022-03-08. Service bulletin. ELECTRICAL SYSTEM; ENGINE; EQUIPMENT. Certain IONIQ Hybrid and Plug-in Hybrid (AE HEV/PHEV) vehicles may exhibit a condition with the BlueLink Remote Start feature unsuccessful when using the MyHyundai mobile app or MyHyundai.com owner web portal. This bulletin describes the procedure to update the ECU with improved logic to correct a SMK (Smart key system) software error when attempting to use the BlueLink Remote Start feature.
21-ST-003H2021-11-06. Service bulletin. STEERING. Certain vehicles may develop a bearing noise within the Motor Driven Power Steering (MDPS) column worm shaft assembly. If bearing noise is heard, follow the procedure in this bulletin to replace the worm shaft bearing

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.