Hyundai bulletin 26-EV-002H
What it saysSome 2025MY IONIQ 5 (NEA EV) vehicles may experience a charging condition where a voltage difference between battery cells prevents the High Voltage Battery from fully charging. NHTSA’s full summary ↓
Hyundai filed this with NHTSA as a service bulletin dated Mar 3, 2026, received Mar 11, 2026, about the fuel/propulsion system — 1 document under this number: 26-EV-002H TSB. It names 1 model year (2025). 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.
Get the next Hyundai Ioniq 5 bulletin by email Weekly, only when something new is filed. Nothing else; one-click unsubscribe.
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.
Some 2025MY IONIQ 5 (NEA EV) vehicles may experience a charging condition where a voltage difference between battery cells prevents the High Voltage Battery from fully charging. If either of the DTCs associated with the condition are identified in "Active" status, follow the procedure outlined in this TSB to replace the Battery System Assembly (BSA).
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 26-EV-002H TSB | Service bulletin | Mar 3, 2026 | 11029938 | PDF, 404 KB |
What the document itself lists
The manufacturer titles it “HV BATTERY INSPECTION & REPLACEMENT”.
Parts the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| 37501-PI020 | — | — | |
| 37501-PI050 | — | — | |
| 37501-PI900 | — | — | |
| 37501-PI920 | — | — | |
| 37501-PI120 | — | — | |
| 37501-PI150 | — | — | |
| 37501-PI820 | — | — | |
| 37535-GI050 | Bolt & | 8 | eBay Motors → |
| 37535-GI500 | Pink-Antifreeze / | 18 | eBay Motors → |
| 00232-19098 | Coolant | 2 | eBay Motors → |
Labour operation and the time the manufacturer allows
| Operation | Description | Time |
|---|---|---|
| 50DV03R0 | Battery Inspection & Replacement | 2.9 hrs |
Read by machine from the document NHTSA serves (4 pages), read Sep 29, 2026. A part number is shown only where it matches Hyundai’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.
Affiliate disclosure: some links on this page are affiliate links. If you request a quote or buy through them we may earn a commission at no extra cost to you. Nothing on this page changes because of it.
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.
Email me new Hyundai bulletins for the Ioniq 5
A weekly email, sent only in a week when Hyundai files something new with NHTSA for the model you pick — service bulletins, campaigns, warranty extensions, over-the-air notices, every model year. Nothing else is sent; one-click unsubscribe in every message. Separate from recall alerts.
What owners reported
Source: NHTSA complaint databaseOwners of the 1 model year this bulletin names have filed 318 complaints with NHTSA since 2015. 69 of them name 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.
I notice a strange pulsing/hesitation when accelerating at partial throttle (maybe 10-25%) between 60-65MPH. It's quite alarming, because it feels like the electric motor is cutting out momentarily.
2025 Hyundai Ioniq 5 · Fuel/Propulsion System · filed with NHTSA Aug 25, 2025 · ODI 11682918
In depth: 2025 Hyundai Ioniq 5 fuel system problems →
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 fuel/propulsion system
Source: same model, same component group3 other manufacturer communications filed against the Hyundai Ioniq 5 under the same component group (fuel/propulsion system), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 26-EV-007H | Service bulletin | Aug 26, 2026 | Some IONIQ 5 (NEA EV) vehicles may set DTC P1E3000 while charging. Vehicle operation remains unaffected. This bulletin provides instructions… |
| 25-EV-003H | Service bulletin | Jul 26, 2025 | Certain IONIQ 5 (NE EV), IONIQ 6 (CE EV), and IONIQ 5 N (NE EV N) vehicles may have missing Inlet 5-Pin Combo DC insulation caps… |
| 25-EV-002H | Service bulletin | Apr 12, 2025 | Certain 2025MY IONIQ 5 (NEA EV) vehicles may experience a charging issue where a voltage difference between battery cells prevents the High… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Hyundai, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Hyundai 26-EV-002H 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 26-EV-002H 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 Hyundai warranty extension on file lists the ones Hyundai has filed.
Which vehicles does 26-EV-002H cover?
The manufacturer filed it against 1 model year: 2025 Hyundai Ioniq 5. 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: 2025 IONIQ 5 (NEA EV): built 10 Dec 2024 – 22 Sep 2025 — the build date is on the certification label in the driver’s door jamb.