Service campaign SC334_TSB

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 campaign
NHTSA id	11019786
Published by NHTSA	2025-06-27
Manufacturer's number	SC334_TSB
Manufacturer's date	2025-06-26
Campaign id or software version	SC334
NHTSA component	SERVICE BRAKES

NHTSA's summary

VOLUNTARY SERVICE CAMPAIGN: UNDERBODY INSPECTION & ANTI-CORROSION MATERIAL APPLICATION (SC334) - This bulletin provides information to apply additional anti-corrosion material to underbody components, including inspection/replacement of the brake line(s), on certain 2014-2019MY Soul (PS) vehicles produced from July 21, 2013 through December 24, 2018, and were originally sold or are currently registered in one of the 28 states where heavy amounts of road salt are used: AK, CT, DC, DE, IA, IL, IN, KS, KY, MA, MD, ME, MI, MN, MO, ND, NE, NH, NJ, NY, OH, PA, RI, SD, UT, VT, WI and WV.

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

Brakes

Vehicles listed
KIA SOUL	2014, 2015, 2016, 2017, 2018, 2019

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

Recalls for the same vehicles and component
2024760	2024-12-13. Brakes
2020595	2020-12-03. Brakes

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
SC334_OWNR_201	2026-08-21. Service campaign. VOLUNTARY SERVICE CAMPAIGN: OWNER RENOTIFICATION (SC334 Flight 201) - This document is the owner renotification advising that Kia is conducting a Voluntary Service Campaign to inspect and, if necessary, replace the brake line(s) in certain 2014-2019 MY Soul vehicles that were originally sold in or are currently registered in states where heavy amounts of road salt are used. In addition, an anti-corrosion material will be applied to the underbody components for added protection.
TSB_SC334_R1	2025-09-02. Service bulletin. TECHNICAL SERVICE BULLETIN: VOLUNTARY SERVICE CAMPAIGN UNDERBODY INSPECTION & ANTI-CORROSION MATERIAL APPLICATION (SC334) - 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 information to apply additional anti-corrosion material to underbody components, including inspection/replacement of the brake line(s), on certain 2014-2019MY Soul (PS) vehicles produced from July 21, 2013 through December 24, 2018, and were originally sold or are currently registered in one of the 28 states where heavy amounts of road salt are used. The 28 states where heavy amounts of road salt are used are: AK, CT, DC, DE, IA, IL, IN, KS, KY, MA, MD, ME, MI, MN, MO, ND, NE, NH, NJ, NY, OH, PA, RI, SD, UT, VT, WI and WV.
SC334_QA	2025-06-25. Service campaign. VOLUNTARY SERVICE CAMPAIGN: QUESTION AND ANSWER (SC334) - This document is the Question and Answer Guide containing the most frequently asked questions regarding the Voluntary Service Campaign SC334.
SC334_OWNR	2025-06-25. Service campaign. VOLUNTARY SERVICE CAMPAIGN: OWNER NOTIFICATION (SC334) - This document is the owner notification advising that Kia is conducting a Voluntary Service Campaign to inspect and, if necessary, replace the brake line(s) in certain 2014-2019 MY Soul vehicles that were originally sold in or are currently registered in states where heavy amounts of road salt are used. In addition, an anti-corrosion material will be applied to the underbody components for added protection.
SC334_DPSM	2025-06-25. Service campaign. VOLUNTARY SERVICE CAMPAIGN: DEALER PARTS AND SERVICE MANAGER MEMO (SC334) - This document is the announcement to the dealer Parts and Service managers advising that Kia is conducting a Voluntary Service Campaign to inspect and, if necessary, replace the brake line(s) in certain 2014-2019 MY Soul vehicles, manufactured from July 21, 2013 through December 24, 2018, that were originally sold in or are currently registered in states where heavy amounts of road salt are used. In addition, an anti-corrosion material will be applied to the underbody components for added protection.
SC334_DP	2025-06-19. Service campaign. VOLUNTARY SERVICE CAMPAIGN: DEALER PRINCIPAL MEMO (SC334) - This document is the announcement to the dealer principals advising that Kia is conducting a Voluntary Service Campaign to inspect and, if necessary, replace the brake line(s) in certain 2014-2019 MY Soul vehicles, manufactured from July 21, 2013 through December 24, 2018, that were originally sold in or are currently registered in states where heavy amounts of road salt are used. In addition, an anti-corrosion material will be applied to the underbody components for added protection.
TSB_CHA098_R3	2020-09-03. Service bulletin. TECHNICAL SERVICE BULLETIN: IBAU SYSTEM REPAIR FOR NOISE AND AIR BLEEDING - 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 repair procedure for the Integrated Brake Actuation Unit (iBAU) system on some 2014-2019MY EV/Hybrid/Plug-In Hybrid vehicles listed (see table), which may exhibit a "honking" (Hissing) noise due to air remaining in the brake fluid system.
PS675	2020-09-03. Service bulletin. 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.
TSB_CHA098_R2	2020-04-07. Service bulletin. TECHNICAL SERVICE BULLETIN: IBAU SYSTEM REPAIR FOR NOISE AND AIR BLEEDING - This bulletin has been revised to include additional information. This bulletin provides the repair procedure for the Integrated Brake Actuation Unit (iBAU) system on some 2014-2019MY EV/Hybrid/Plug-In Hybrid vehicles listed (see table), which may exhibit a “Honking” (Hissing) noise due to air remaining in the brake fluid system.
TSBCHA098_R1	2019-09-06. Service bulletin. TSBCHA098_R1: IBAU SYSTEM REPAIR FOR NOISE AND AIR BLEEDING - This bulletin has been revised to include additional information. This bulletin provides the repair procedure for the Integrated Brake Actuation Unit (iBAU) system on some 2014-2019MY EV/Hybrid/Plug-In Hybrid vehicles listed (see table), which may exhibit a "Honking" (Hissing) noise due to air remaining in the brake fluid system.