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Service bulletin 21-EE-001H

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 id10189806
Published by NHTSA2021-04-06
Manufacturer's number21-EE-001H
Manufacturer's date2021-03-16
NHTSA componentELECTRICAL SYSTEM

NHTSA's summary

This Service Information bulletin provides the instructions on how to adjust the maximum EV battery charging threshold in the radio head unit.

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

Electrical system

Vehicles listed
HYUNDAI IONIQ ELECTRIC2017, 2018, 2019, 2020 (the catalog's model; the bulletin names a series or trim of it)
HYUNDAI KONA ELECTRIC2019, 2020, 2021 (the catalog's model; the bulletin names a series or trim of it)

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

Recalls for the same vehicles and component
20227282022-12-16. Electrical
22V9410002022-12-16. ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY:THERMAL MANAGEMENT:FLUID/COOLANT
21V9440002021-12-07. ELECTRICAL SYSTEM:PROPULSION SYSTEM:CHARGING:MODULE:ONBOARD (OBCM); ELECTRICAL SYSTEM:SOFTWARE
21V1270002021-03-01. ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY
20V6300002020-10-13. ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY:MANAGEMENT SYSTEM/ENERGY CONTROL MODULE (BMS/BECM):SOFTWARE; ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY
20185622018-10-12. Electrical
20182032018-04-25. Electrical
20174332017-09-07. Electrical

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
9C5 OL2026-09-11. Service campaign. Hyundai has determined that certain Kona Electric and Ioniq Electric vehicles are eligible for a BMS software update. This update to the BMS software improves the system’s diagnostic capability.
26-01-065H DCS2026-09-02. Service campaign. Certain Kona Electric (OS EV) and Ioniq Electric (AE EV) vehicles are eligible for a Battery Management System (BMS) software update. This update to the BMS software improves the system's diagnostic capability. Follow Technical Service Bulletin (TSB) 26-01-065H to complete the BMS software update.
26-01-065H DN2026-09-02. Service campaign. Certain Kona Electric (OS EV) and Ioniq Electric (AE EV) vehicles are eligible for a Battery Management System (BMS) software update. This update to the BMS software improves the system’s diagnostic capability.
26-01-065H TSB2026-08-21. Service campaign. Certain Kona Electric (OS EV) and Ioniq Electric (AE EV) vehicles are eligible for a Battery Management System (BMS) software update. This update to the BMS software improves the system’s diagnostic capability. Follow this bulletin to complete the BMS software update.
26-EE-003H TSB2026-04-21. Service bulletin. 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 and, if necessary, replace the starter magnetic switch (solenoid) assembly.
25-01-089H DCS2026-01-06. Other. Upon customer's request ONLY, the Technical Service Bulletin (TSB) 25-01-089H provides the service procedure for installation of a key cylinder reinforcement protector assembly and two anti-theft decals on the front windows. This repair procedure is being provided in addition to the previous Anti-Theft software provided under Service Campaign 993 (TSB 24-01-009H-1).
25-01-089H DN2026-01-06. Other. In addition to the Anti-Theft software provided under Service Campaign 993 (TSB 24-01-009H-1), a zinc reinforced ignition cylinder protector hardware upgrade is being made available to customers upon request. This supplemental security measure is to be installed at the ignition switch location and provides additional protection against the social media theft method. Vehicles not equipped with an immobilizer during production at the factory are eligible. The repair procedure shall be performed and claimed upon customer request only. Any future repairs to these vehicles in which an installed ignition cylinder protector impacts required parts and/or labor, shall be covered by HMA. Please see TSB 25-01-089H for details.
25-01-089H TSB2026-01-06. Other. This bulletin provides the service procedure for installation of a key cylinder reinforcement protector assembly and two anti-theft decals on the front windows.
P33 OL2025-12-19. Other. In response to this trend, we engineered a software upgrade that addresses the social media theft method and made it available to owners of eligible models free of charge at authorized Hyundai dealers since early 2023. In addition to the anti-theft software, we’ve developed a new zinc-reinforced ignition cylinder protector hardware upgrade that can be installed at the ignition cylinder location to provide additional protection against the social media theft method. Because your Hyundai vehicle with the VIN listed above (“Subject Vehicle”) was not factory-equipped with an engine immobilizer and was previously eligible for the software upgrade, you are now eligible until March 31, 2027 to have the ignition cylinder protector installed — if you request it — at no cost to you through an authorized Hyundai dealership.
25-BE-020H TSB2025-10-03. Service bulletin. 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.