Kia bulletin PI2603Y
Kia filed this with NHTSA as a service bulletin dated Jul 8, 2026, received Jul 18, 2026, about the electrical system — 1 document under this number: PI2603Y_TSB. It names 2 model years (2020–2021). 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.
What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationTECHNICAL SERVICE BULLETIN: BSA REPLACEMENT (PI2603Y) - This bulletin provides information related to the Technical Service Bulletin previously published under PI2603, titled “BMS Battery Diagnostic Logic Improvement.� If one or more of the Diagnostic Trouble Codes (DTCs) listed in the bulletin are present or stored after the Battery Management System (BMS) software upgrade has been performed per PI2603, follow the procedure outlined in this publication to replace the Battery System Assembly (BSA) on the applicable vehicle.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| PI2603Y_TSB | Service bulletin | Jul 8, 2026 | 11035089 | not yet checked |
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.
Common questions
Source: NHTSA, 49 CFR 579.5Is Kia PI2603Y 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 PI2603Y 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.
Which vehicles does PI2603Y cover?
The manufacturer filed it against 2 model years: 2021 Kia Niro, 2020 Kia Niro. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.