Nissan bulletin NTB25-032B
Nissan filed this with NHTSA as a service bulletin dated Mar 31, 2026, received Apr 29, 2026, about the electrical system. It names 3 model years (2023–2025). 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.
What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationHVAC INSUFFICIENT COOLING CONCERNS IF YOU CONFIRM The customer states a lack of comfort due to insufficient cooling, AND The outside ambient temperature is considered hot, for example around 40°C (104°F). ACTION Follow the SERVICE PROCEDURE in this bulletin to: 1. Confirm the current Amplifier-Control, Air Conditioner (A/C auto amp) part number. 2. Reprogram the A/C auto amp, if applicable. 3. Confirm the current Controller Assy – Refrigerator (Heat pump control unit) part number. 4. Reprogram the Controller Assy – Refrigerator (Heat pump control unit) after reprogramming the A/C auto amp, if applicable. 5. Erase all DTCs. IMPORTANT: The purpose of ACTION (above) is to give you a quick idea of the work you will be performing. You MUST closely follow the entire SERVICE PROCEDURE as it contains information that is essential to successfully completing this repair.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| NTB25-032B | Service bulletin | Mar 31, 2026 | 11031697 | 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 Nissan NTB25-032B 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 NTB25-032B 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 NTB25-032B cover?
The manufacturer filed it against 3 model years: 2025 Nissan Ariya, 2024 Nissan Ariya, 2023 Nissan Ariya. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.