Land Rover bulletin Discovery_N861_18AUG25
What it says48V Mild Hybrid Electric Vehicle (MHEV) battery enters an offline state and no longer communicates or functions as intended. NHTSA’s full summary ↓
Land Rover filed this with NHTSA as a manufacturer communication dated Aug 18, 2025, received Sep 4, 2025, about the electrical system. It names 1 model year (2020). 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 communication48V Mild Hybrid Electric Vehicle (MHEV) battery enters an offline state and no longer communicates or functions as intended. This can result in illumination of the Malfunction Indicator Lamp (MIL) ,
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| Discovery_N861_18AUG25 | Other | Aug 18, 2025 | 11022598 | PDF, 223 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 1 model year this bulletin names have filed 33 complaints with NHTSA since 2015. 14 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.
Car randomly decelerates at any given speed at random times, car will flash D for drive gear on the dash then resume to normal. RPM will drop then return to normal. Presented issue to Land Rover Jacksonville multiple instances . No issues detected. Car getting stuck in gear. Car jerks for a moment. Car flashes in D and R gear and jerks
2020 Land Rover Discovery · Electrical System · filed with NHTSA Oct 21, 2026 · ODI 11772789
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 group63 other manufacturer communications filed against the Land Rover Discovery under the same component group (electrical system), newest first. The eight newest are listed; the rest are on the Land Rover list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| N811 Discovery 15MAY26 | Other | May 16, 2026 | Door Zone Module - Quiescent Drain |
| N811 Discovery 17APR26 | Other | Apr 17, 2026 | Door Zone Module - Quiescent Drain |
| N869 DISCOVERY 20MAR26 | Other | Mar 20, 2026 | Software Over The Air (SOTA) updates are failing to complete. |
| SSM76411 - 10MAR26 | Other | Mar 10, 2026 | Smart Key Deactivated message on instrument cluster and unable to start their vehicle |
| Discovery_N861 02-20-2026 | Other | Feb 20, 2026 | The 48V Mild Hybrid Electric Vehicle (MHEV) battery enters an offline state and no longer communicates or functions as intended. This can re… |
| Discovery_N811 02-20-2026 | Other | Feb 20, 2026 | Door Zone Module - Quiescent Drain |
| TUCC_FEB2026_35 | Other | Feb 13, 2026 | There is a concern with the 48Volt charging system(DC/DC) with the vehicle. |
| TUCC_FEB2026_34 | Other | Feb 13, 2026 | There is a concern/fault with the 48Volt MHEV system. |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Land Rover, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Land Rover Discovery_N861_18AUG25 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 Discovery_N861_18AUG25 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 Discovery_N861_18AUG25 cover?
The manufacturer filed it against 1 model year: 2020 Land Rover Discovery. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.