WenmarOpen by Wenmar Pro

Other N811-DEFENDER

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeOther
NHTSA id11001266
Published by NHTSA2024-06-07
Manufacturer's numberN811-DEFENDER
Manufacturer's date2024-05-17
Campaign id or software versionN811
NHTSA componentELECTRICAL SYSTEM

NHTSA's summary

A potential concern has been identified where customer could be left with a nonfunctioning vehicle as a result of a depleted battery State of Charge due to the door modules staying awake. Retailers will perform a software update to all door modules.

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

Vehicles listed
LAND ROVER DEFENDER2020, 2021, 2022

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
26V5990002026-09-17. ELECTRICAL SYSTEM:PROPULSION SYSTEM:DC/DC CONVERTER
26V2480002026-04-17. ELECTRICAL SYSTEM:PROPULSION SYSTEM:DC/DC CONVERTER
21V4240002021-06-03. ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
N811 Defender 15MAY262026-06-04. Other. Door Zone Module - Quiescent Drain
N811 Defender 17APR262026-05-07. Other. Door Zone Module - Quiescent Drain
N811 Defender 20MAR262026-04-07. Other. Door Zone Module - Quiescent Drain
SSM76411 - 10MAR262026-04-06. Other. Smart Key Deactivated message on instrument cluster and unable to start their vehicle
TUCC_FEB2026_352026-03-04. Other. There is a concern with the 48Volt charging system(DC/DC) with the vehicle.
TUCC_FEB2026_342026-03-04. Other. There is a concern/fault with the 48Volt MHEV system.
TUCC_FEB2026_332026-03-04. Other. 12V STARTUP BATTERY FLAT - MILD HYBRID ELECTRIC VEHICLE (MHEV)
252602.027 - 12FEB262026-03-04. Service bulletin. Once the vehicle is powered down via ignition cycle, it may not restart depending on remaining residual charge.
TUCC_JAN2026_252026-02-06. Other. There is a concern with the 48Volt charging system(DC/DC) with the vehicle.
TUCC_DEC2025_392026-01-08. Other. A battery warning light on and or electrical system failure message is displayed on instrument cluster.