Kia bulletin PI2605
What it saysPRODUCT IMPROVEMENT CAMPAIGN: BMU LOGIC IMPROVEMENT (PI2605) - This bulletin provides information regarding a Battery Management System (BMS) software update for certain 2025-2026 EV6 (CV1 eGT, CVa) vehicles as listed… NHTSA’s full summary ↓
Kia filed this with NHTSA as a manufacturer communication dated Sep 2, 2026, received Aug 29, 2026, about the electrical system — 5 documents under this number: PI2605_TSB, PI2605_OWNR, PI2605_QA, PI2605_DPSM and 1 more. It names 2 model years (2025–2026). A manufacturer communication 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: PRODUCT IMPROVEMENT CAMPAIGN: BMU LOGIC IMPROVEMENT (PI2605) - This bulletin provides information regarding a Battery Management System (BMS) software update for certain 2025-2026 EV6 (CV1 eGT, CVa) vehicles as listed in the table below. To improve the diagnostic monitoring of the high-voltage battery in the subject vehicles, Kia has developed enhanced BMS software to improve the detection logic and system response in cases of moisture intrusion into the high-voltage battery.
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| PI2605_TSB | Other | Sep 2, 2026 | 11036781 | PDF, 540 KB |
| PI2605_OWNR | Other | Aug 29, 2026 | 11036466 | PDF, 169 KB |
| PI2605_QA | Other | Aug 28, 2026 | 11036467 | PDF, 111 KB |
| PI2605_DPSM | Other | Aug 28, 2026 | 11036465 | PDF, 83 KB |
| PI2605_DP | Other | Aug 28, 2026 | 11036464 | PDF, 108 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 55 complaints with NHTSA since 2015. 50 of them name Electrical System, Fuel/Propulsion 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.
When shifting from reverse to drive there was a loud pop towards the back up the car. A check electrical system warning popped up, and then eventually a Check Power Supply stop now warning came up. The vehicle would not go above 26MPH and had to be stopped in a parking lot to be towed to the dealership.
2025 Kia EV6 · Electrical System · filed with NHTSA Mar 5, 2026 · ODI 11722278
ICCU failure. Pulled out of driveway, heard a pop, received warning to pull over and check vehicle power. Car had to be towed to dealership but they are experiencing so many of these failures that they are extremely backed up on even being able to check out the car
2025 Kia EV6 · Fuel/Propulsion System · filed with NHTSA Mar 3, 2026 · ODI 11721869
Car has an NACS charger port, and is advertised by KIA as compatible with Tesla Superchargers and home chargers. The car will not charge at a supercharger nor at home using a Tesla charge cord that works with a Tesla Model 3
2025 Kia EV6 · Electrical System · filed with NHTSA Mar 9, 2026 · ODI 11723130
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 group37 other manufacturer communications filed against the Kia EV6 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 |
|---|---|---|---|
| PI2606 | Other | Sep 4, 2026 | TECHNICAL SERVICE BULLETIN: VOLUNTARY EMISSIONS SERVICE CAMPAIGN: This bulletin provides information to upgrade the 12-volt battery… |
| TSB_CLI049_R2 | Service bulletin | Aug 28, 2026 | TECHNICAL SERVICE BULLETIN: PARTIAL REPAIR – ELECTRICAL A/C COMPRESSOR - This bulletin has been revised to include additional information. N… |
| 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… |
| WTY044 | Warranty extension | Apr 23, 2026 | WARRANTY EXTENSION CAMPAIGN: TECHNICAL SERVICE BULLETIN: ICCU INSPECTION/REPLACEMENT (WTY044) - This bulletin provides information associate… |
| TSB_ELE417 | Service bulletin | Apr 14, 2026 | TECHNICAL SERVICE BULLETIN: INFOTAINMENT SOFTWARE UPDATE PROCEDURE - This bulletin provides information on the process for downloading infot… |
| SA635 | Over-the-air update | Feb 10, 2026 | TECHNICAL SERVICE BULLETIN: SERVICE ACTION: DCU OPERATIONSOFTWARE LOGIC IMPROVEMENT (SA635) - This bulletin has been revised to include addi… |
| SC327Y | Service bulletin | Jan 16, 2026 | TECHNICAL SERVICE BULLETIN: SUBSEQUENT REPAIR ACTION: ICCU AND FUSE REPLACEMENT (SC327Y) - This bulletin provides information related to the… |
| CA2513 | Service bulletin | Jan 9, 2026 | TECHNICAL SERVICE BULLETIN: 3 WAY VALVE REPLACEMENT (CA2513) - This bulletin provides instructions for inspecting and replacing the High Vol… |
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 PI2605 a recall?
No. A manufacturer communication 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 PI2605 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 PI2605 cover?
The manufacturer filed it against 2 model years: 2026 Kia EV6, 2025 Kia EV6. 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: EV6 (CV1 eGT): built 12 Feb 2025 – 11 Apr 2025; EV6 (CVa): built 17 Dec 2024 – 29 May 2026 — the build date is on the certification label in the driver’s door jamb.