Service bulletin NTB25-044
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
| Type | Service bulletin |
|---|---|
| NHTSA id | 11024394 |
| Published by NHTSA | 2025-10-21 |
| Manufacturer's number | NTB25-044 |
| Manufacturer's date | 2025-10-02 |
| Campaign id or software version | EL25-009 |
| NHTSA component | ELECTRICAL SYSTEM |
NHTSA's summary
PROCESS FOR 12V BATTERY TESTING APPLIED VEHICLES: 2026 LEAF (ZE2) SERVICE INFORMATION Due to changes to the DC-DC control logic, 12V battery testing may take an extra 20 minutes or more. To perform a faster 12V battery test, the DC-DC deactivation process must be completed which deactivates the DC-DC power supply for 1 hour. The 12V battery must be diagnosed or removed within 1 hour or power supply may be restored unintentionally. The DC-DC deactivation process is in the Electronic Service Manual (ESM) under Precautions for Removing Battery Terminal. · Refer to the ESM: ELECTRICAL & POWER CONTROL > POWER SUPPLY, GROUND & CIRCUIT ELEMENTS > PRECAUTION > PRECAUTIONS FOR REMOVING BATTERY TERMINAL > Precautions for Removing Battery Terminal · If the 12V battery is not replaced after testing, verify the power switch has been pressed to cycle the ignition to ACC mode ON and then back to ACC mode OFF to re-enable the DC-DC system which maintains the 12V battery.
The document
The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.
Components
Electrical system
| NISSAN LEAF | 2026 |
|---|
Listing a model year does not mean every vehicle of it is concerned: the document says which.
| 26V188000 | 2026-03-25. ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY |
|---|
A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.
| NTB26-002 | 2026-02-10. Service bulletin. EFFICIENCY DISPLAYS LOWER THAN EXPECTED, BUT ACTUAL DRIVING RANGE OK IF YOU CONFIRM The efficiency display in the meter appears to be lower than what would be expected for the mileage that was driven, but the vehicle’s actual driving range, or distance driven, is correct for the initial state of charge, AND CONSULT 4 (C4) indicates that a “Part number after reprogramming” is available for the A/C auto amp. ACTION 1. Confirm that the “Current part number” for the A/C auto amp displayed in C4 is in Table A. 2. If applicable, reprogram the A/C auto amp. 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. |
|---|---|
| NPSB 15-460 | 2025-10-21. Service bulletin. *****Dealer Announcement***** To ensure continued customer satisfaction and confidence, Nissan is conducting a Dealer Quality Action on certain model year 2026 Nissan LEAF vehicles identified in Service Comm and DBS National Service History. On affected vehicles, Remote Rear Defrost, Front Wiper Deicer, and Heated Door Mirrors may be unavailable via the smartphone app when the Defrost and Deicer systems are active. This condition may be caused by an incorrect installation position of the shorting terminal within the fuse block. Nissan dealers will inspect the affected vehicles and, if necessary, correct the shorting terminal installation to restore full remote functionality. *****What Dealers Should Do***** PLEASE FOLLOW THE ATTACHED INSTRUCTIONS: 1. Verify if vehicles are affected by this quality action using Service Comm or DBS National Service History – Open Campaigns I.D. P5A27 • New vehicles in dealer inventory can also be identified using DBS (Sales-> Vehicle Inventory, and filter by Open Campaign). • Refer to NPSB 15-460 for additional information • Some vehicles may still be in transit. Please continue to check newly arriving inventory for applicability. 2. Use the attached procedure to remedy any vehicles affected by this quality action prior to sale. 3. The service department should submit the applicable claim using the claims coding provided in the attached procedure for the action performed to close the campaign in Service Comm and release the vehicle. |