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Service bulletins for the 2020 Hyundai Kona

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.

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

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Bulletins, newest first
23-01-014H-42023-05-04. Service bulletin. ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:IMMOBILIZER/PROXIMITY:SENSOR. Certain Hyundai vehicles may not be equipped with an immobilizer. This bulletin provides the service procedure to update the IBU/BCM (Integrated Body Control Unit/Body Control Module), to revise the OEM Hyundai burglar alarm system operation and ignition start logic, and installation of two anti-theft decals for the front windows.
23-01-014H-42023-05-04. Service bulletin. ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:IMMOBILIZER/PROXIMITY:SENSOR. Hyundai has launched an anti-theft software upgrade and window decal campaign (Campaign 993) in response to an increase in thefts of certain Hyundai vehicles not equipped with engine immobilizers targeted through social media. In November 2021, engine immobilizers became standard on all Hyundai vehicles produced.
23-01-014H-32023-05-02. Service bulletin. VISIBILITY:POWER WINDOW DEVICES AND CONTROLS; ELECTRICAL SYSTEM. Certain Hyundai vehicles may not be equipped with an immobilizer. This bulletin provides the service procedure to update the IBU/BCM (Integrated Body Control Unit/Body Control Module), to revise the OEM Hyundai burglar alarm system operation and ignition start logic, and installation of two anti-theft decals for the front windows.
23-01-014H-22023-04-04. Service bulletin. ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:IMMOBILIZER/PROXIMITY:SENSOR; ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:IMMOBILIZER/PROXIMITY:KEY/SENDER; ELECTRICAL SYSTEM. Hyundai has launched an anti-theft software upgrade and window decal campaign (Campaign 993) in response to an increase in thefts of certain Hyundai vehicles not equipped with engine immobilizers targeted through social media. In November 2021, engine immobilizers became standard on all Hyundai vehicles produced.
23-01-014H-22023-04-04. Service bulletin. ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:IMMOBILIZER/PROXIMITY:KEY/SENDER. Certain Hyundai vehicles may not be equipped with an immobilizer. This bulletin provides the service procedure to update the IBU/BCM (Integrated Body Control Unit/Body Control Module), to revise the OEM Hyundai burglar alarm system operation and ignition start logic, and installation of two anti-theft decals for the front windows.
23-01-007H2023-02-02. Service bulletin. ENGINE AND ENGINE COOLING. Certain 2018-2022MY Kona (OS) vehicles equipped with 2.0L engines and 4WD may exhibit transfer case oil leaks and/or an oil smell caused by the transfer case pinion oil seal overheating. This bulletin describes the procedure to update the 4WD electronic control module (ECU) and to inspect the transfer pinion area for leakage. If a leak is detected, the transfer case pinion oil seal will need to be replaced.
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-EV-001H-12022-11-01. Service bulletin. POWER TRAIN. This bulletin outlines the necessary inspection and repair procedures for certain 2019-2021MY Kona EV (OS EV) vehicles, exhibiting abnormal rumbling noise from the electric traction motor.
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-EM-008H2022-06-10. Service bulletin. ENGINE AND ENGINE COOLING. Hyundai is conducting a service campaign 974 to enhance the knock sensor logic with the Cylinder Noise Diagnostic System (CNDS) software update. CNDS is to detect abnormal cylinder wall scuffing or noise of the engine block before potentially severe engine damage occurs. If abnormal noise is detected, the Malfunction Indicator Lamp (MIL) will blink continuously. In addition, DTC P1327 will be recorded in the ECM.
22-AT-007H2022-06-10. Service bulletin. POWER TRAIN; EQUIPMENT. Certain vehicles (listed below) equipped with 7-speed Double Clutch Transmissions (DCT) may exhibit abnormal vibration at low speeds. This bulletin outlines the procedures for diagnosing clutch judder, updating the Transmission Control Unit (TCU) with revised logic, and/or replacing the Double Clutch.
22-01-043H2022-06-10. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT; ENGINE AND ENGINE COOLING. Hyundai is conducting a service campaign to enhance the knock sensor logic with the Cylinder Noise Diagnostic System (CNDS) software update. CNDS is to detect abnormal cylinder wall scuffing or noise of the engine block before potentially severe engine damage occurs. If abnormal noise is detected, the Malfunction Indicator Lamp (MIL) will blink continuously. In addition, DTC P1327 will be recorded in the ECM.
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-EV-001H2022-05-10. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. This bulletin outlines the necessary inspection and repair procedures for certain 2019-2020MY Kona EV (OS EV) vehicles, exhibiting abnormal rumbling noise from the electric traction motor.
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
21-01-027H2021-04-07. Service bulletin. ELECTRICAL SYSTEM. This service campaign provides information on how to set the maximum EV battery charging level to 80% in the Energy Information screen of the radio head display to prevent excessive battery heat during charging. Although outside charging is preferable, this setting is very important for vehicles that are to be charged inside a building. The campaign requires taking photos by STUI or attaching photo files to the WebDCS claim submission of both the Energy Information Screen and full vehicle instrument cluster to show vehicle is in compliance.
21-EM-004H2021-04-07. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING. This bulletin provides the service procedure for engine connecting rod bearing clearance testing. Perform the procedure outlined in this bulletin to fulfill the Bearing Clearance Test inspection requirements to determine next required steps.
21-BR-002H2021-04-07. Service bulletin. SERVICE BRAKES; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. This bulletin provides best practice recommendations when performing brake service procedures.
21-01-019H2021-04-07. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This bulletin provides information related to the VCULDC(Vehicle Control Unit & Low DCDC Converter) software update for KONA Electric(OS EV) vehicles. This update is also part of the high voltage battery monitoring logic improvement by optimizing software of each system.
21-EE-001H2021-04-07. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM. This Service Information bulletin provides the instructions on how to adjust the maximum EV battery charging threshold in the radio head unit.
21-BE-004H2021-04-06. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. When using Wireless CarPlay, the system may intermittently auto disconnect. When Wireless CarPlay is disconnected, a pop up message “Phone Not Responding. Please reconnect it and try again” will appear on the radio screen.
21-EM-003H2021-04-06. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING. This bulletin provides the inspection procedure and repair guidelines for certain vehicles listed below.

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