Nissan bulletin NTB25-032B
What it saysHVAC 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). NHTSA’s full summary ↓
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.
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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.
HVAC 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 | PDF, 482 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 3 model years this bulletin names have filed 60 complaints with NHTSA since 2015. 33 of them name Electrical 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.
Component or system that failed: Electric Drive System / Charging System / Software – repeated failure displaying “EV System Off” message, rendering vehicle inoperable. Description of incident: This is the second time within 30 days that my 2025 Nissan Ariya (VIN: ) has completely shut down and become undriveable.
2025 Nissan Ariya · Electrical System · filed with NHTSA May 19, 2025 · ODI 11661982
While charging my 2025 Nissan Ariya at an Electrify America DC fast charger, the vehicle failed to complete the charging “handoff” between the charger and the car. The charging station instructed me to disconnect and reconnect, but after multiple attempts, the system failed to establish a proper connection.
2025 Nissan Ariya · Electrical System · filed with NHTSA Aug 23, 2025 · ODI 11682602
We pulled up to an EVGO Charging station with 27% battery charge & 57 miles available. When we hooked up to the charging station it didn't recognize the vehicle & advised to detach & reconnect. We repeated this step 5 times before calling EVGO customer support.
2025 Nissan Ariya · Electrical System · filed with NHTSA Aug 18, 2025 · ODI 11681347
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 group25 other manufacturer communications filed against the Nissan Ariya under the same component group (electrical system), newest first. The eight newest are listed; the rest are on the Nissan list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| NTB26-026 | Service bulletin | Apr 22, 2026 | STEERING WHEEL SWITCH ILLUMINATION IS TOO DARK AT DUSK AND/OR DAWN IF YOU CONFIRM The customer states that the steering wheel switches are t… |
| NTB19-042F | Service bulletin | Feb 20, 2025 | AUTOMATIC EMERGENCY BRAKING WARNING LIGHT BLINKING APPLIED SYSTEMS: Vehicles equipped with a lane camera (see Figure 1) SERVICE INFORMATION… |
| NTB24-009A | Service bulletin | Jan 30, 2025 | SIDE RADAR ALIGNMENT SERVICE INFORMATION The SERVICE INFORMATION in this bulletin can be used in conjunction with the ESM if experiencing di… |
| NTB24-040 | Service bulletin | Jan 14, 2025 | VEHICLE NOT CHARGING THROUGH HIGH VOLTAGE CHARGE PORT IF YOU CONFIRM The vehicle is not charging from the level 3 high voltage charger, AND… |
| P4A30, P4A31 | Service bulletin | Nov 15, 2024 | P4A30 (CAN Gateway Reprogram) Affected Models/Years: Affected Population: Dealer Inventory: SERVICE COMM Activation date: Stop Sale In Effec… |
| P4A31 | Service bulletin | Nov 14, 2024 | VOLUNTARY SERVICE CAMPAIGN 2023-2024 ARIYA; IVI (AV CONTROL UNIT) REPROGRAM CAMPAIGN ID #: P4A31 APPLIED VEHICLES: 2023-2024 ARIYA (FE0) Che… |
| P4A30 | Service bulletin | Nov 14, 2024 | VOLUNTARY SERVICE CAMPAIGN 2023-2024 ARIYA; 8-CHANNEL CAN GATEWAY REPROGRAMMING CAMPAIGN ID #: P4A30 APPLIED VEHICLES: 2023-2024 ARIYA (FE0)… |
| NTB21-037D | Service bulletin | Aug 15, 2024 | DTCS B2E4B-06, B2E60-06, B2E61-06 DISPLAYED AS CRNT IN THE TCU This bulletin has been amended. See AMENDMENT HISTORY on the last page. Pleas… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Nissan, by the number printed on the letter.
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. The document itself sets the build window: built on or before 16 Apr 2025; built on or before 31 Jan 2024 — the build date is on the certification label in the driver’s door jamb.