Land Rover bulletin N811 Discovery 17APR26
What it saysDoor Zone Module - Quiescent Drain NHTSA’s full summary ↓
Land Rover filed this with NHTSA as a manufacturer communication dated Apr 17, 2026, received May 7, 2026, about the electrical system. It names 2 model years (2021–2022). 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 communicationDoor Zone Module - Quiescent Drain
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| N811 Discovery 17APR26 | Other | Apr 17, 2026 | 11032422 | PDF, 220 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 2 model years this bulletin names have filed 26 complaints with NHTSA since 2015. 16 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.
2021 Land Rover Discovery 48V mild hybrid (MHEV). Recurring 12V system failures: repeated depleted/dead 12V batteries and no-start events. The 12V battery has failed and been replaced three times during my ownership (two documented at a franchised Land Rover dealer and an independent shop), plus a prior replacement under the previous…
2021 Land Rover Discovery · Electrical System · filed with NHTSA Jun 4, 2026 · ODI 11742136
The contact owns a 2021 Land Rover Discovery. The contact stated that while driving at an undisclosed speed, several unknown warning lights were illuminated, and the vehicle stalled in the middle of the roadway. The contact associated the failure with NHTSA Campaign Number: 26V248000 (Electrical System).
2021 Land Rover Discovery · Electrical System · filed with NHTSA Aug 19, 2026 · ODI 11757979
Supplement / update to prior NHTSA complaints regarding my 2021 Land Rover Discovery MHEV (VIN: y prior complaints, Jaguar Land Rover has issued Recall 26V248 for DC/DC converter failure leading to loss of propulsion in 2021–2024 Land Rover Discovery MHEV vehicles.
2021 Land Rover Discovery · Electrical System · filed with NHTSA May 12, 2026 · ODI 11737455
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 |
| 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. |
| TUCC_FEB2026_33 | Other | Feb 13, 2026 | 12V STARTUP BATTERY FLAT - MILD HYBRID ELECTRIC VEHICLE (MHEV) |
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 N811 Discovery 17APR26 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 N811 Discovery 17APR26 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 N811 Discovery 17APR26 cover?
The manufacturer filed it against 2 model years: 2022 Land Rover Discovery, 2021 Land Rover Discovery. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.