Service bulletin 21-01-080H

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)
Type	Service bulletin
NHTSA id	10206363
Published by NHTSA	2022-01-08
Manufacturer's number	21-01-080H
Manufacturer's date	2021-12-23
NHTSA component	ELECTRICAL SYSTEM

NHTSA's summary

When asked to provide the Modem Information, the Universal Subscriber Identity Module (USIM) information is not available. This bulletin describes the 3-part Software to correct this condition and activate Blue Link Services.

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 ELANTRA	2017, 2018
HYUNDAI IONIQ ELECTRIC	2018 (the catalog's model; the bulletin names a series or trim of it)
HYUNDAI IONIQ HYBRID	2017, 2018 (the catalog's model; the bulletin names a series or trim of it)
HYUNDAI SANTA FE	2017, 2018
HYUNDAI SANTA FE SPORT	2016, 2017
HYUNDAI SONATA	2016, 2017, 2018
HYUNDAI SONATA HYBRID	2016 (the catalog's model; the bulletin names a series or trim of it)
HYUNDAI TUCSON	2016, 2017

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

Recalls for the same vehicles and component
2022659	2022-11-15. Electrical
21V944000	2021-12-07. ELECTRICAL SYSTEM:PROPULSION SYSTEM:CHARGING:MODULE:ONBOARD (OBCM); ELECTRICAL SYSTEM:SOFTWARE
21V749000	2021-09-24. ELECTRICAL SYSTEM:SOFTWARE; EXTERIOR LIGHTING:TURN SIGNAL
2020091	2020-02-28. Electrical
2018562	2018-10-12. Electrical
2018203	2018-04-25. Electrical
2017433	2017-09-07. Electrical
16V842000	2016-11-21. TRAILER HITCHES; ELECTRICAL SYSTEM:WIRING
16V628000	2016-08-30. ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)
15V678000	2015-10-20. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL

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
26-EM-014H TSB	2026-09-22. Service bulletin. Some Tucson (TL) vehicles equipped with a 2.0L engine may exhibit a continued DTC P132600 after an ECM logic update has been performed per TSB 24-01-068H, Engine Monitoring Logic (Service Campaign 966). This bulletin provides instructions to inspect and resolve other engine mechanical issues and if DTC P132600 remains, then a procedure and manual mode passwords are given to perform the update again in manual mode to resolve this condition.
9C2 060518	2026-06-06. Service campaign. Following completion of Service Campaign 9C2 (Theta II Emissions Improvement), certain vehicles may exhibit a brief hesitation or rough shifting condition during cold start operation. If present, this condition is expected to occur only within approximately the first 1-3 minutes after engine start, while the catalyst is reaching its normal operating temperature.
9C2 DCS 260518	2026-06-06. Service campaign. Following completion of Service Campaign 9C2 (Theta II Emissions Improvement), certain vehicles may exhibit a brief hesitation or rough shifting condition during cold start operation. If present, this condition is expected to occur only within approximately the first 1-3 minutes after engine start, while the catalyst is reaching its normal operating temperature.
26-01-013H-2 DN	2026-06-06. Service campaign. Certain Santa Fe (TMA), Santa Fe Sport (AN), Sonata (LFA), and Tucson (TL) vehicles equipped with Theta II engines may exhibit elevated engine-out emissions. The California Air Resources Board has determined that these vehicles may be releasing air pollutants which exceed Federal and California standards.
26-01-013H-2 TSB	2026-06-06. Service campaign. Certain Santa Fe (TMA), Santa Fe Sport (AN), Sonata (LFA), and Tucson (TL) vehicles equipped with Theta II engines may exhibit elevated engine-out emissions. This bulletin provides instructions for updating the Engine Control Module (ECM) to address this condition.
Z01 Letter	2026-06-06. Warranty extension. Certain 2012 – 2017 model year Accent, 2012 – 2017 model year Azera, 2013 – 2018 model year Santa Fe Sport, 2013 – 2019 model year Santa Fe, and 2012 – 2017 model year Veloster vehicles may exhibit an intermittent airbag warning light and diagnostic trouble codes (DTCs) may be set. At Hyundai, we are committed to providing vehicles of outstanding quality and value. In an effort to meet this commitment, the warranty coverage for the Occupant Classification System (OCS)/Occupant Detection System (ODS) under these conditions has been extended to 18 years/unlimited mileage from the date of original retail delivery or date of first use (whichever occurs first) and is valid for original and subsequent owners.
26-BE-011H DN	2026-05-08. Warranty extension. Some vehicles listed below may exhibit an intermittent airbag warning light and DTC(s) B1763 (OCS ECU Defect), and/or B1764 (OCS Mat Defect) may be stored. Hyundai is extending the warranty coverage of the sensor for the Occupant Classification System (OCS) / Occupant Detection System (ODS) to 18 years/unlimited mileage from the date of original retail delivery or date of first use (whichever occurs first) and is valid for original and subsequent owners. Refer to the warranty and parts information outlined in this bulletin.
26-BE-011H TSB	2026-05-08. Warranty extension. Some vehicles listed below may exhibit an intermittent airbag warning light and DTC(s) B1763 (OCS ECU Defect), and/or B1764 (OCS Mat Defect) may be stored. Hyundai is extending the warranty coverage of the sensor for the Occupant Classification System (OCS) / Occupant Detection System (ODS) to 18 years/unlimited mileage from the date of original retail delivery or date of first use (whichever occurs first) and is valid for original and subsequent owners. Refer to the warranty and parts information outlilned in this bulletin. This bulletin contains the procedure to inspect for the airbag warning light and DTC(s), replace the OCS (ODS) unit or wire harness, reset the OCS (ODS), and initialize the power seat module (if applicable). This TSB also contains the procedure to replace the OCS (ODS) mat if DTCs exist after replacement of the OCS (ODS) wire harness.
26-EE-003H TSB	2026-04-21. 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 DCS	2026-01-06. 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).