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Service bulletins for the 2021 Kia Niro

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.

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

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Only bulletins with component: Brakes are shown. Show all

Bulletins, newest first
SC321_OWNR_2012025-09-02. Service campaign. SERVICE BRAKES. VOLUNTARY SERVICE CAMPAIGN: OWNER RENOTIFICATION (SC321) - This document is the owner renotification advising that Kia is conducting a Voluntary Service Campaign to address a potential corrosion concern with the Integrated Electronic Brake (IEB) in certain 2019-2022 MY Niro EV vehicles that were originally sold in or are currently registered in one of the 28 states with high road salt usage.
SC321_TSB_R12024-09-30. Service campaign. SERVICE BRAKES. TECHNICAL SERVICE BULLETIN: VOLUNTARY SERVICE CAMPAIGN: IEB INSPECTION AND WATER PROOFING OR IEB REPLACEMENT (SC321) - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides the procedure to inspect the Integrated Electronic Booster (IEB) on certain 2019-2022MY Niro EV (DE EV) vehicles produced from December 5, 2018 through April 12, 2022, that were originally sold or are currently registered in one of the 28 states where heavy amounts of road salt are used. Over time, saltwater inflow into the Integrated IEB at the IEB fastening bolt hole may cause corrosion and lead to an inoperable IEB motor. Should this occur, the vehicle may experience illumination of the Anti-lock Brake System (ABS), Forward Collision-Avoidance Assist (FCA) warning lights, and/or a firmer brake pedal feel. The brakes remain operational. Kia is conducting this service campaign to improve corrosion resistance of the IEB assembly.
SC321_TSB2024-09-25. Service bulletin. SERVICE BRAKES. TECHNICAL SERVICE BULLETIN: VOLUNTARY SERVICE CAMPAIGN: IEB INSPECTION AND WATER PROOFING OR IEB REPLACEMENT (SC321) - This bulletin provides the procedure to inspect the Integrated Electronic Booster (IEB) on certain 2019-2022MY Niro EV (DE EV) vehicles produced from December 5, 2018 through April 12, 2022, that were originally sold orare currently registered in one of the 28 states where heavy amounts of road salt are used. Over time, saltwater inflow into the Integrated IEB at the IEB fastening bolt hole may cause corrosion and lead to an inoperable IEB motor. Should this occur, the vehicle may experience illumination of the Anti-lock Brake System (ABS), Forward Collision-Avoidance Assist (FCA) warning lights, and/or a firmer brake pedal feel. The brakes remain operational. Kia is conducting this service campaign to improve corrosion resistance of the IEB assembly.
SC321_QA2024-09-18. Service campaign. SERVICE BRAKES. WARRANTY EXTENSION CAMPAIGN: QUESTION AND ANSWER (SC321) - This document is the Question and Answer Guide containing the most frequently asked questions regarding the Voluntary Service Campaign SC321.
SC321_OWNR2024-09-18. Service campaign. SERVICE BRAKES. VOLUNTARY SERVICE CAMPAIGN: OWNER NOTIFICATION (SC321) - This document is the owner notification advising that Kia is conducting a Voluntary Service Campaign to address a potential corrosion concern with the Integrated Electronic Brake (IEB) in certain 2019-2022 MY Niro EV vehicles that were originally sold in or are currently registered in one of the 28 states with high road salt usage.
SC321_DPSM2024-09-18. Service campaign. SERVICE BRAKES. VOLUNTARY SERVICE CAMPAIGN: DEALER PARTS AND SERVICE MANAGER MEMO (SC321) - This document is the announcement to the dealer Parts and Service managers advising that Kia is conducting a Voluntary Service Campaign to address a potential corrosion concern with the Integrated Electronic Brake (IEB) on certain 2019-2022 MY Niro EV vehicles, manufactured from December 5, 2018 through April 12, 2022, that were originally sold in or are currently registered in one of the 28 states with high road salt usage.
SC321_DP2024-09-18. Service campaign. SERVICE BRAKES. VOLUNTARY SERVICE CAMPAIGN: DEALER PRINCIPAL MEMO (SC321) - This document is the announcement to the dealer principals advising that Kia is conducting a Voluntary Service Campaign to address a potential corrosion concern with the Integrated Electronic Brake (IEB) on certain 2019-2022 MY Niro EV vehicles, manufactured from December 5, 2018 through April 12, 2022, that were originally sold in or are currently registered in one of the 28 states with high road salt usage.
PS6752020-09-03. Service bulletin. EQUIPMENT; SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC:CALIPER. PITSTOP - BRAKE CALIPER LEAK INSPECTION - This PITSTOP provides information related to a brake caliper fluid/oil substance found on some Kia vehicles, due to possible excess assembly oil applied during assembly.

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