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Service bulletin TSB_CHA126V

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 id11009491
Published by NHTSA2024-10-30
Manufacturer's numberTSB_CHA126V
Manufacturer's date2024-10-24
NHTSA componentSERVICE BRAKES
Manufacturer's systemCHA

NHTSA's summary

TECHNICAL SERVICE BULLETIN: FRONT BRAKE DISC JUDDER INSPECTION AND REPLACEMENT - This bulletin provides information to address vehicles that may be exhibiting front brake judder sensation while braking on certain 2021-2024MY Sorento (MQ4a) vehicles produced from July 26, 2021 through March 28, 2024 and 2023-2024MY Sportage (NQ5a) vehicles produced from January 7, 2022 through May 20, 2024. Brake judder is a vibration or pulsing sensation felt in the steering wheel, brake pedal, and/or seat when the brakes are applied while driving.

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 SORENTO2021, 2022, 2023, 2024
KIA SPORTAGE2023, 2024

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

Recalls for the same vehicles and component
23V4100002023-06-07. SERVICE BRAKES, HYDRAULIC:POWER ASSIST

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
TSB_CHA126_R22026-05-22. Service bulletin. TECHNICAL SERVICE BULLETIN: FRONT BRAKE DISC REPLACEMENT & BURNISHING - 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 replace the front brake discs on certain 2021-2024MY Sorento (MQ4a) vehicles produced from July 26, 2021 through March 28, 2024 and 2023-2024MY Sportage (NQ5a) vehicles produced from January 7, 2022 through May 20, 2024 to address a customer’s complaint of brake judder. The affected vehicles may exhibit a vibrating and/or pulsing sensation (front brake disc judder) in the steering wheel, brake pedal, and/or seat when the brakes are applied during driving.
TSB_CHA126V_R12025-06-11. Service bulletin. TECHNICAL SERVICE BULLETIN: FRONT BRAKE DISC REPLACEMENT - 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 replace the front brake discs on certain 2021-2024MY Sorento (MQ4a) vehicles produced from July 26, 2021 through March 28, 2024 and 2023-2024MY Sportage (NQ5a) vehicles produced from January 7, 2022 through May 20, 2024 to address a customer’s complaint of brake judder. The affected vehicles may exhibit a vibrating and/or pulsing sensation (front brake disc judder) in the steering wheel, brake pedal, and/or seat when the brakes are applied during driving.
SC252_TSB_R12023-02-02. Service bulletin. TECHNICAL SERVICE BULLETIN: VOLUNTARY SERVICE CAMPAIGN: HECU INSPECTION /REPLACEMENT (SC252A/B/C) - 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 inspect and, if necessary, replace the Hydraulic Electronic Control Unit (HECU) on certain K5 (DL3a) and Telluride (ON) and Sorento (MQ4a) vehicles produced on the dates shown in Table below. The HECU in the subject vehicles may have been produced with a condition that can result in an internal brake fluid leak. If an internal brake fluid leak occurs, the Electronic Parking Brake (EPB) light, Anti-Lock Brake System (ABS) light, Electronic Stability Control (ESC) light, Auto-Hold light and/or Forward Collision-Avoidance Assist (FCA) light may illuminate, or a Smart Cruise Control (SCC) warning message may appear on the instrument cluster. If this occurs, EPB, ESC and Auto-Hold functions may be disabled
SC252_OWNR_MQ42022-12-20. Service bulletin. VOLUNTARY SERVICE CAMPAIGN: OWNER NOTIFICATION - This document is the owner notification advising that Kia America, Inc. is conducting a Voluntary Service Campaign to inspect and, if necessary, replace the Hydraulic Electronic Control Unit ("HECU") in certain 2022 MY Sorento vehicles.
SC252_QA2022-12-20. Service bulletin. VOLUNTARY SERVICE CAMPAIGN: QUESTION AND ANSWER - This document is the Question and Answer Guide containing the most frequently asked questions regarding the Voluntary Service Campaign (SC252).
SC252_DPSM2022-12-20. Service bulletin. VOLUNTARY SERVICE CAMPAIGN: DEALER PARTS AND SERVICE MANAGER MEMO - This document is the announcement to the dealer Parts and Service Managers that Kia America, Inc. is conducting a Voluntary Service Campaign on the following vehicles: Certain 2022 MY Sorento vehicles manufactured from December 8, 2021 through May 23, 2022. Certain 2022 MY Telluride vehicles manufactured from November 29, 2021 through September 1, 2022. Certain 2022-2023 MY K5 vehicles manufactured from December 7, 2021 through September 12, 2022. The Hydraulic Electronic Control Unit (HECU) controls the vehicle's Electronic Parking Brake (EPB), Electronic Stability Control System (ESC), and Auto-Hold features, among other related functions. The HECU in these vehicles may have been produced by the supplier with a condition that can result in an internal brake fluid leak. If an internal brake fluid leak occurs, the vehicle's EPB light, ABS light, ESC light, Auto-Hold light, and/or Forward Collision Avoidance Assist light may illuminate, or a Smart Cruise Control (SCC) warning message may appear on the instrument cluster. If this occurs, EPB, ESC, and Auto Hold functions may be disabled.
SC252_DP2022-12-20. Service bulletin. VOLUNTARY SERVICE CAMPAIGN: DEALER PRINCIPAL MEMO - This document is the announcement to the dealer principals that Kia America, Inc. is conducting a Voluntary Service Campaign on the following vehicles: Certain 2022 MY Sorento vehicles manufactured from December 8, 2021 through May 23, 2022. Certain 2022 MY Telluride vehicles manufactured from November 29, 2021 through September 1, 2022. Certain 2022-2023 MY K5 vehicles manufactured from December 7, 2021 through September 12, 2022. The Hydraulic Electronic Control Unit (HECU) controls the vehicle's Electronic Parking Brake (EPB), Electronic Stability Control System (ESC), and Auto-Hold features, among other related functions. The HECU in these vehicles may have been produced by the supplier with a condition that can result in an internal brake fluid leak. If an internal brake fluid leak occurs, the vehicle's EPB light, ABS light, ESC light, Auto-Hold light, and/or Forward Collision Avoidance Assist light may illuminate, or a Smart Cruise Control (SCC) warning message may appear on the instrument cluster. If this occurs, EPB, ESC, and Auto Hold functions may be disabled.
SC252_TSB2022-12-20. Service bulletin. TECHNICAL SERVICE BULLETIN: VOLUNTARY SERVICE CAMPAIGN: HECU INSPECTION /REPLACEMENT (SC252A/B/C) - This bulletin provides information to inspect and, if necessary, replace the Hydraulic Electronic Control Unit (HECU) on certain K5 (DL3a) and Telluride (ON) and Sorento (MQ4a) vehicles produced on the dates shown in Table below. The HECU in the subject vehicles may have been produced with a condition that can result in an internal brake fluid leak. If an internal brake fluid leak occurs, the Electronic Parking Brake (EPB) light, Anti-Lock Brake System (ABS) light, Electronic Stability Control (ESC) light, Auto-Hold light and/or Forward Collision-Avoidance Assist (FCA) light may illuminate, or a Smart Cruise Control (SCC) warning message may appear on the instrument cluster. If this occurs, EPB, ESC and Auto-Hold functions may be disabled
SC202_TSB2021-01-06. Service bulletin. TSB_202 - Technical Service Bulletin - VOLUNTARY SERVICE CAMPAIGN - This bulletin provides the procedure to replace the accelerator pedal assembly on some 2021MY Sorento (MQ4a) vehicles, produced from September 9, 2020 through December 3, 2020. When the shift lever is in the P (Park) position, a potential higher than expected idle RPM condition may occur due to a mispositioned internal component in the pedal assembly. However, if this condition occurs, brake pedal application reduces the RPM to idle. If this condition occurs while driving, application of the brake pedal will activate the vehicle's Smart Pedal logic and reduce the RPM to idle. Replacement of the accelerator pedal assembly will correct this condition.
SC202_OWNR2021-01-06. Service bulletin. SC202_OWNR - Notice to owners of a Voluntary Service Campaign to replace the accelerator pedal assembly on some 2021 MY Sorento vehicles, produced from September 9, 2020 through December 3, 2020. When the shift lever is in the P (Park) position, a higher than expected idle RPM condition may occur due to a mispositioned internal component in the pedal assembly. However, if this condition occurs, brake pedal application reduces the RPM to idle. If this condition occurs while driving, application of the brake pedal will activate the vehicle's Smart Pedal logic and reduce the RPM to idle. Replacement of the accelerator pedal assembly will correct this condition.