Kia bulletin CS2309
What it saysCUSTOMER SATISFACTION: ANTI-THEFT S/W LOGIC UPGRADE & DECAL INSTALLATION (CS2309) - This bulletin has been revised to include additional information. NHTSA’s full summary ↓
Kia filed this with NHTSA as a service bulletin dated Jun 6, 2024, received Apr 22, 2023, about the electrical system — 4 documents under this number: CS2309_TSB_R3, CS2309_TSB_R2, CS2309_TSB_R1, CS2309_TSB. It names 2 model years (2021–2022). A service bulletin is not a safety recall: it is the manufacturer telling its dealers how to diagnose or repair a condition, and whether the work is paid for depends on the warranty in force. Quoting the number at a service desk can save a diagnosis.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationWhat it applies to, as the document itself states it — the build window in the manufacturer’s own words, read by machine from the PDF NHTSA serves. The build date is on the certification label in the driver’s door jamb; the dealer settles a borderline vehicle by its VIN.
TECHNICAL SERVICE BULLETIN: CUSTOMER SATISFACTION: ANTI-THEFT S/W LOGIC UPGRADE & DECAL INSTALLATION (CS2309) - 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 2021-2022MY Seltos (SP2) vehicles produced from November 21, 2019 through February 28, 2022, 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.
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| CS2309_TSB_R3 | Service bulletin | Jun 6, 2024 | 11001600 | PDF, 941 KB |
| CS2309_TSB_R2 | Service bulletin | Jul 27, 2023 | 10239718 | PDF, 958 KB |
| CS2309_TSB_R1 | Service bulletin | May 24, 2023 | 10236655 | PDF, 956 KB |
| CS2309_TSB | Service bulletin | Apr 5, 2023 | 10234601 | PDF, 952 KB |
The summary is NHTSA’s abstract of the document, as filed under 49 CFR 579.5. One communication is usually filed as several documents — the bulletin, a dealer notice, an owner letter — and the number on any of them finds this page. A PDF link is shown only once NHTSA’s own server has been seen to serve that document; the rest are checked over the following nights. Quote the number at a service desk; it is what the dealer’s system is keyed on.
Model years it names
Source: as the manufacturer filed themA vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.
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What owners reported
Source: NHTSA complaint databaseOwners of the 2 model years this bulletin names have filed 457 complaints with NHTSA since 2015. 57 of them name Electrical System — the same broad component group this bulletin is filed under. NHTSA groups complaints coarsely, so that means the same area of the vehicle, not necessarily the same fault.
My car horn won’t work consistently. Works sometimes and other times not at all. Please help and let me know if there’s a recall for the horns because there should be always been like this. Sincerely
2022 Kia Seltos · Electrical System · filed with NHTSA Nov 27, 2024 · ODI 11627808
A complaint is one owner’s account, not a defect finding, and a bulletin is not a recall. Nothing here says this bulletin was issued because of these complaints, or that the repair it describes fixed them. Complaint files on this site begin in 2015.
More bulletins about the electrical system
Source: same model, same component group24 other manufacturer communications filed against the Kia Seltos under the same component group (electrical system), newest first. The eight newest are listed; the rest are on the Kia list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| PS813 | Service bulletin | Sep 4, 2026 | This Pitstop provides information related to the smart key fob programming procedure on certain 2027MY~ Seltos (SP3) vehicles. |
| TSB_ELE422 | Service bulletin | May 28, 2026 | TECHNICAL SERVICE BULLETIN: INFOTAINMENT SYSTEM SOFTWARE UPDATE USING UPDATE. KIA. COM - This bulletin provides information and service proc… |
| TSB_ELE382_R1 | Service bulletin | Oct 22, 2025 | TECHNICAL SERVICE BULLETIN: IBU LOGIC IMPROVEMENT: This bulletin has been revised to include additional information. New/revised sections of… |
| WTY038 | Warranty extension | Oct 21, 2025 | WARRANTY EXTENSION CAMPAIGN: TECHNICAL SERVICE BULLETIN: HORN ASSEMBLY INSPECTION/REPLACEMEN (WTY038) - This bulletin has been revised to in… |
| SST082_R1 | Service bulletin | Sep 4, 2025 | This bulletin provides instructions to perform an engine vibration inspection using the Kia Diagnostic System (KDS) tablet on certain Kia en… |
| TSB_ELE382 | Service bulletin | Aug 19, 2025 | TECHNICAL SERVICE BULLETIN: IBU LOGIC IMPROVEMENT - This bulletin provides information to upgrade the Integrated Body Control Unit (IBU) sof… |
| SA592 | Service bulletin | Jun 23, 2025 | TECHNICAL SERVICE BULLETIN: SERVICE ACTION: OIL CHANGE REMINDER RESETOPERATION LOGIC (SA592) - This bulletin provides information to upgrade… |
| TSB_SST082 | Service bulletin | Apr 4, 2025 | TECHNICAL SERVICE BULLETIN: PISTON NOISE SENSING SYSTEM (PNSS) INSPECTION - This bulletin provides instructions to perform an engine vibrati… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Kia, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Kia CS2309 a recall?
No. A service bulletin is a manufacturer communication filed with NHTSA under 49 CFR 579.5; a safety recall carries an NHTSA campaign number (two digits, a letter, six digits) and a federal duty to repair for free. Check the vehicle’s recalls by VIN at nhtsa.gov/recalls, or on its page here.
Is the CS2309 repair free?
Not automatically. A service bulletin describes how to diagnose or repair a condition; who pays depends on the warranty in force, any extension, and the dealer. Quoting the number can save a diagnosis either way. Every Kia warranty extension on file lists the ones Kia has filed.
Which vehicles does CS2309 cover?
The manufacturer filed it against 2 model years: 2022 Kia Seltos, 2021 Kia Seltos. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone. The document itself sets the build window: 2021-2022MY Seltos (SP2): built 21 Nov 2019 – 28 Feb 2022; Seltos (SP2): built 21 Nov 2019 – 28 Feb 2022 — the build date is on the certification label in the driver’s door jamb.