Kia bulletin CA2603
What it saysThis bulletin provides information to remove the seat slide motor tube from the power front seats on certain 2026MY EV9 (MV1a) vehicles produced from January 2, 2025, through January 3, 2026. NHTSA’s full summary ↓
Kia filed this with NHTSA as a service bulletin dated Jun 18, 2026, about the seats — 1 document under this number: TSB_BOD355. It names 1 model year (2026). 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: FRONT SEAT SLIDE MOTOR NOISE (CA2603) - This bulletin provides information to remove the seat slide motor tube from the power front seats on certain 2026MY EV9 (MV1a) vehicles produced from January 2, 2025, through January 3, 2026. The subject vehicles may exhibit a buzzing noise while the user operates the front power seat slide (forward and rearward) functions. This condition does not affect seat functionality.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| TSB_BOD355 | Service bulletin | Jun 18, 2026 | 11033979 | PDF, 551 KB |
What the document itself lists
Labour operation and the time the manufacturer allows
| Operation | Description | Time |
|---|---|---|
| 260A18R0 | Front Seat Motor Tube Removal | 0.8 hrs |
Read by machine from the document NHTSA serves (4 pages), read Sep 29, 2026. A part number is shown only where it matches Kia’s own catalogue shape, an operation only with its code and time, and a description only where the reader got it whole; anything it could not settle is left out, and the PDF is the record. Times are the manufacturer’s warranty allowances, not a quote. Listings and prices on eBay Motors are the seller’s.
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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 1 model year this bulletin names have filed 28 complaints with NHTSA since 2015.
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 seats
Source: same model, same component group3 other manufacturer communications filed against the Kia EV9 under the same component group (seats), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| SA647 | Service bulletin | May 19, 2026 | TECHNICAL SERVICE BULLETIN: SERVICE ACTION: FRONT SEAT SLIDE MOTOR NOISE (SA647) - This bulletin provides information to remove the seat sli… |
| TSB_ELE326_R1 | Service bulletin | Feb 2, 2024 | TECHNICAL SERVICE BULLETIN: SERVICE ACTION: POWER SEAT MODULE OPERATION LOGIC IMPROVEMENT (SA557) - This bulletin has been revised to includ… |
| TSB_ELE326 | Service bulletin | Jan 8, 2024 | TECHNICAL SERVICE BULLETIN: SERVICE ACTION: POWER SEAT MODULE OPERATION LOGIC IMPROVEMENT (SA557) - This bulletin provides the procedure to… |
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 CA2603 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 CA2603 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 CA2603 cover?
The manufacturer filed it against 1 model year: 2026 Kia EV9. 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: 2026MY EV9 (MV1a): built on or after 2 Jan 2025; EV9 (MV1a): built 2 Jan 2025 – 3 Jan 2026 — the build date is on the certification label in the driver’s door jamb.