Service bulletin CS2305_TSB_R5

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	11001596
Published by NHTSA	2024-06-13
Manufacturer's number	CS2305_TSB_R5
Manufacturer's date	2024-06-06
Campaign id or software version	CS2305
NHTSA component	ELECTRICAL SYSTEM

NHTSA's summary

TECHNICAL SERVICE BULLETIN: CUSTOMER SATISFACTION: ANTI-THEFT S/W LOGIC UPGRADE & DECAL INSTALLATION (CS2305) - 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 upgrade the software logic of the Integrated Body Control Unit (IBU) or Body Control Module (BCM) system on certain 2014-2018MY Forte (YD), 2017-2018MY Forte (YDm), and 2019-2021MY Forte (BDm) vehicles produced within the dates outlined in page 13, which may not be equipped with an immobilizer. This logic upgrade will add anti-theft ignition start logic to the vehicle's system operation which activates when the vehicle is locked with the use of the key fob.

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

Electrical system

Vehicles listed
KIA FORTE	2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
KIA FORTE KOUP	2014, 2015 (the catalog's model; the bulletin names a series or trim of it)
KIA FORTE KOUP	2016, 2017

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

Recalls for the same vehicles and component
2015015	2015-01-16. Electrical
15V015000	2015-01-16. ELECTRICAL SYSTEM

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_ENG263	2026-08-28. Service bulletin. TECHNICAL SERVICE BULLETIN: MISFIRE CONCERN DUE TO OVERRUNNING ALTERNATOR DECOUPLER - This bulletin provides information to address unresolved misfire events on some 2020–2024MY Forte (BDm) produced from January 1, 2019 through September 30, 2024, and 2020–2022MY Soul (SK3) vehicles produced from November 1, 2018 through May 31, 2022 equipped with a Gamma 1.6L T‑GDI engine. In certain cases, misfire symptoms may persist after completing normal diagnostic procedures and replacing ignition‑related components (spark plugs, ignition coils, and fuel injectors). If misfire concerns remain after these repairs are performed, excessive torsional oscillation of the Overrunning Alternator Decoupler (OAD) pulley may be the contributing factor. This bulletin provides the procedure to replace the OAD pulley with the updated Overrunning Alternator Pulley (OAP) kit and associated damper components.
TSB_ELE422	2026-06-03. Service bulletin. TECHNICAL SERVICE BULLETIN: INFOTAINMENT SYSTEM SOFTWARE UPDATE USING UPDATE.KIA.COM - This bulletin provides information and service procedures for updating the infotainment systems on applicable Kia vehicles using the Kia Navigation Updater available at update.kia.com. The software update may improve system performance, enhance existing features, and apply the latest operating software for supported vehicles (2021-2026MY All Models).
PI2106_OWNR_501	2026-04-01. Other. PRODUCT IMPROVEMENT CAMPAIGN: OWNER RENOTIFICATION (PI2106 FLIGHT 501) - This document is the owner renotification advising that Kia is conducting a Product Improvement Campaign to perform a software update on 2017-2018 MY Kia Forte vehicles equipped with 2.0-liter Nu GDI 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”).
PI2105_OWNR_501	2026-03-31. Other. PRODUCT IMPROVEMENT CAMPAIGN: OWNER RENOTIFICATION (PI2105 FLIGHT 501) - This document is the owner renotification advising that Kia is conducting a Product Improvement Campaign to perform a software update on 2016 MY Forte and Forte Koup vehicles equipped with 2.0-liter GDI 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”).
SC199_OWNR_BD_3	2026-02-25. Emissions. VOLUNTARY EMISSIONS SERVICE CAMPAIGN: OWNER RENOTIFICATION (SC199 FL301) - This document is the owner renotification advising that Kia is conducting Voluntary Service Campaign to update the software programming on the Transmission Control Module (TCM) and, if necessary, replace the Intelligent Variable Transmission (IVT) on certain 2019-2020 MY Forte vehicles.
PI2106_OWNR_401	2025-08-06. Other. PRODUCT IMPROVEMENT CAMPAIGN: OWNER RENOTIFICATION (PI2106) - This document is the owner renotification advising that Kia is conducting a Product Improvement Campaign to perform a software update on 2017-2018 MY Kia Forte vehicles equipped with 2.0-liter Nu GDI 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”).
PI2105_OWNR_401	2025-07-31. Other. PRODUCT IMPROVEMENT CAMPAIGN: OWNER RENOTIFICATION (PI2105) - This document is the owner renotification advising that Kia is conducting a Product Improvement Campaign to perform a software update on 2016 MY Forte and Forte Koup vehicles equipped with 2.0-liter GDI 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”).
TSB_ELE378	2025-03-26. Service bulletin. TECHNICAL SERVICE BULLETIN: SERVICE ACTION: KIA CONNECT MODEM RESET (SA611) - This bulletin outlines the procedure for resetting the modem in certain 2016-2025MY Kia vehicles listed on page 3 that are equipped with Kia Connect Services. The affected vehicles may encounter the following issues: remote Start/Climate Control function not working, vehicle Status on the Kia Access App not updating, connected routing not functioning properly.
CS2311_TSB_R3	2024-10-23. Service bulletin. TECHNICAL SERVICE BULLETIN: CUSTOMER SATISFACTION: THEFT DETERRENT IGNITION CYLINDER PROTECTOR & DECAL INSTALLATION (CS2311) - 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 install a Theft Deterrent Ignition Cylinder Protector on certain 2010-2022MY Kia vehicles outlined on page 15, which may not have been equipped with an immobilizer and whose Integrated Body Control Unit (IBU) / Body Control Module (BCM) are not able to receive the Anti-Theft Software Logic upgrade under CS2301/02/03/04/05/06/07/08/09 TSBs. In an effort to help prevent thefts of Kia vehicles that are not equipped with an immobilizer, a protective cover will be permanently affixed to the ignition cylinder. This Theft Deterrent Ignition Cylinder Protector prevents the removal of the key lock cylinder thereby preventing access to the ignition tumbler.
PI2106_OWNR_201	2024-05-06. Service bulletin. PRODUCT IMPROVEMENT CAMPAIGN: OWNER RENOTIFICATION (PI2106) - This document is the owner renotification advising that Kia is conducting a Product Improvement Campaign to perform a software update on 2017-2018 MY Kia Forte vehicles equipped with 2.0-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").