Service bulletin TSBSC129

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	10089470
Published by NHTSA	2017-01-25
Manufacturer's number	TSBSC129
Manufacturer's date	2016-03-24
NHTSA component	ENGINE; EQUIPMENT

NHTSA's summary

VOLUNTARY SAFETY RECALL CAMPAIGN: A/T FLUID COOLER HOSE REPLACEMENT (SC 129) - THIS BULLETIN PROVIDES THE PROCEDURE TO REPLACE THE A/T COOLER HOSES IN CERTAIN 2011 MY FORTE (TD) VEHICLES PRODUCED FROM AUGUST 27, 2010 THROUGH NOVEMBER 11, 2010. THE AUTOMATIC TRANSMISSION FLUID COOLER HOSES MAY HAVE BEEN IMPROPERLY CURED DURING THE MANUFACTURING PROCESS. THIS CONDITION MAY RESULT IN THE LOSS OF TRANSMISSION FLUID. IF SUFFICIENT FLUID IS LOST, THE LOSS OF HYDRAULIC PRESSURE TO THE TRANSAXLE COULD RESULT IN REDUCED VEHICLE MOBILITY. TO CORRECT THIS CONDITION FOLLOW THE PROCEDURE OUTLINED IN THIS BULLETIN.

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Engine, Equipment and accessories

Vehicles listed
KIA FORTE	2011

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

Recalls for the same vehicles and component
2021040	2021-02-01. Engine

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
PI2102_OWNR_501	2026-03-12. Other. PRODUCT IMPROVEMENT CAMPAIGN: OWNER RENOTIFICATION (PI2102 FLIGHT #501) - This document is the owner renotification advising that Kia is conducting an important Product Improvement Campaign to perform a software update on 2010-2011 MY Kia Forte and Forte Koup vehicles equipped with 2.4-liter MPI engines to protect the engine from excessive connecting rod bearing damage. The update will be done free of charge and will only involve the addition of newly developed computer software for the Engine Control Unit (“ECU”).
PI2102_OWNR_401	2025-07-09. Other. PRODUCT IMPROVEMENT CAMPAIGN: OWNER RENOTIFICATION (PI2102) - This document is the owner renotification advising that Kia is conducting a Product Improvement Campaign to perform a software update on 2010-2011 MY Kia Forte and Forte Koup vehicles equipped with 2.4-liter MPI engines to protect the engine from excessive connecting rod bearing damage. The update will be done free of charge and will only involve the addition of newly developed computer software for the Engine Control Unit (“ECU”).
PI2102YZ_TSB_R1	2024-11-13. Service bulletin. TECHNICAL SERVICE BULLETIN: PRODUCT IMPROVEMENT CAMPAIGN: SUBSEQUENT REPAIR ACTION: ENGINE REPLACEMENT INSTRUCTIONS FOR DTC P1326 (PI2102Y/Z) - 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 related to the Technical Service Bulletin previously published in (PI2102) titled “Knock Sensor Detection System - ECU Logic Improvement” for 2010-2011MY Forte and Forte Koup (TD)vehicles equipped with Theta 2.4L MPI engine, produced from February 24, 2009 through May 31, 2011. Specifically, this bulletin provides instructions on which procedures to follow if, after installation of the KSDS, any one of the subject vehicles below return to the dealer with Diagnostic Trouble Code (DTC) P1326 (Knock Signal Range/Performance).
PI2102_OWNR_301	2024-11-13. Other. PRODUCT IMPROVEMENT CAMPAIGN: OWNER RENOTIFICATION (PI2102) - This document is the owner renotification advising that Kia is conducting This bulletin provides information related to the Technical Service Bulletin previously published in (PI2101) titled “Knock Sensor Detection System - ECU Logic Improvement” for 2011MY Sorento (XMa) vehicles equipped with Theta 2.4L MPI engine, produced from October 24, 2009 through June 24, 2011. Specifically, this bulletin provides instructions on which procedures to follow if, after installation of the KSDS, any one of the subject vehicles below return to the dealer with Diagnostic Trouble Code (DTC) P1326 (Knock Signal Range/Performance).
PI2102_OWNR_201	2024-04-03. Service bulletin. PRODUCT IMPROVEMENT CAMPAIGN: OWNER RENOTIFICATION (PI2102) - This document is the owner renotification advising that Kia is conducting a Product Improvement Campaign to perform a software update on 2010-2011 MY Kia Forte & Forte Koup vehicles equipped with 2.4-liter engines to protect the engine from excessive connecting rod bearing damage. The update will be done free of charge and will only involve the addition of newly developed computer software for the Engine Control Unit ("ECU").
CS2305L_OWNRTD2	2023-08-24. Service bulletin. CUSTOMER SATISFACTION CAMPAIGN: OWNER RE-NOTIFICATION - This document is the owner re-notification advising that Kia is now making steering wheel lock devices available directly to certain Kia vehicle owners. These devices can help deter a theft attempt. We are making this device available to customers free of charge and will ship it directly to customers who place orders within eighteen (18) months from the date of this letter.
CS2305L_OWNRTD	2023-04-22. Service bulletin. CUSTOMER SATISFACTION CAMPAIGN: OWNER NOTIFICATION - This document is the owner notification advising that Kia is now making steering wheel lock devices available directly to certain Kia vehicle owners. These devices can help deter a theft attempt. We are making this device available to customers free of charge and will ship it directly to customers who place orders within eighteen (18) months from the date of this letter.
CS2305L_OWNRYD	2023-04-06. Service bulletin. CUSTOMER SATISFACTION CAMPAIGN: OWNER NOTIFICATION - This document is the owner notification advising that Kia is now making steering wheel lock devices available directly to certain Kia vehicle owners. These devices can help deter a theft attempt. We are making this device available to customers free of charge and will ship it directly to customers who place orders within eighteen (18) months from the date of this letter.
PI2102YZ_TSB	2022-07-02. Service bulletin. SUBSEQUENT REPAIR ACTION: ENGINE REPLACEMENT INSTRUCTIONS FOR DTC P1326 (PI2102Y/Z) - This bulletin provides information related to the Technical Service Bulletin previously published in (PI2102) titled "Knock Sensor Detection System - ECU Logic Improvement" for 2010-2011MY Forte and Forte Koup (TD) vehicles equipped with Theta 2.4L MPI engine, produced from February 24, 2009 through May 31, 2011. Specifically, this bulletin provides instructions on which procedures to follow if, after installation of the KSDS, any one of the subject vehicles below return to the dealer with Diagnostic Trouble Code (DTC) P1326 (Knock Signal Range/Performance).
PI2102_TSB	2021-05-01. Service bulletin. TECHNICAL SERVICE BULLETIN: THETA 2.4L MPI - KNOCK SENSOR DETECTION SYSTEM (KSDS) ECU LOGIC IMPROVEMENT (PI2102) - This bulletin provides information related to a software update to the Engine Control Unit (ECU) to install the Knock Sensor Detection System (KSDS) in order to protect the engine from excessive connecting rod bearing damage.