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Service bulletins for the 2021 Land Rover 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.

514 on file from NHTSA, as of 2026-10-19.

By type

By component

Only bulletins with component: Electrical system are shown. Show all

Bulletins, newest first
N811 Defender 15MAY262026-06-04. Other. ELECTRICAL SYSTEM. Door Zone Module - Quiescent Drain
N811 Defender 17APR262026-05-07. Other. ELECTRICAL SYSTEM. Door Zone Module - Quiescent Drain
N811 Defender 20MAR262026-04-07. Other. ELECTRICAL SYSTEM. Door Zone Module - Quiescent Drain
SSM76411 - 10MAR262026-04-06. Other. ELECTRICAL SYSTEM. Smart Key Deactivated message on instrument cluster and unable to start their vehicle
TUCC_FEB2026_352026-03-04. Other. ELECTRICAL SYSTEM. There is a concern with the 48Volt charging system(DC/DC) with the vehicle.
TUCC_FEB2026_342026-03-04. Other. ELECTRICAL SYSTEM. There is a concern/fault with the 48Volt MHEV system.
TUCC_FEB2026_332026-03-04. Other. ELECTRICAL SYSTEM. 12V STARTUP BATTERY FLAT - MILD HYBRID ELECTRIC VEHICLE (MHEV)
252602.027 - 12FEB262026-03-04. Service bulletin. ELECTRICAL SYSTEM. Once the vehicle is powered down via ignition cycle, it may not restart depending on remaining residual charge.
TUCC_JAN2026_252026-02-06. Other. ELECTRICAL SYSTEM. There is a concern with the 48Volt charging system(DC/DC) with the vehicle.
TUCC_DEC2025_392026-01-08. Other. ELECTRICAL SYSTEM. A battery warning light on and or electrical system failure message is displayed on instrument cluster.
Defender_N811_17OCT252025-10-24. Other. ELECTRICAL SYSTEM. Door Zone Module - Quiescent Drain
TUCC_JUL2025_322025-08-07. Other. ELECTRICAL SYSTEM. Passive Entry doesn't respond intermittently to access car. Have to use key buttons to get in.
TUCC_JUN2025_432025-07-06. Other. ELECTRICAL SYSTEM. The SOTA Campaign number displayed in the software update screen in the vehicle is only updated when a SOTA campaign completes successfully.
N811 Letter 23MAY252025-06-06. Other. ELECTRICAL SYSTEM. Door Zone Module - Quiescent Drain
Defender_N811_16MAY252025-06-05. Other. ELECTRICAL SYSTEM. Door Zone Module - Quiescent Drain
Defender_N811_18APR252025-05-06. Other. ELECTRICAL SYSTEM. Door Zone Module - Quiescent Drain
TUCC_APR2025_182025-05-05. Other. ELECTRICAL SYSTEM. Leaking windshield that caused the water ingress on the electrical component.
Defender_N811_21MAR252025-04-07. Other. ELECTRICAL SYSTEM. Customer could be left with a vehicle that can not be unlocked or the engine started as a result of a depleted battery State of Charge.
SA Owner Letter N8112025-04-07. Other. ELECTRICAL SYSTEM. Door zone module - quiescent drain
SFCC_MAR2025_452025-04-07. Other. ELECTRICAL SYSTEM. 'Stop Safely Electrical Fault Detected' warning message displayed in the message center.
SSM762802025-03-07. Other. ELECTRICAL SYSTEM. JLR Engineering investigations have identified that customers are experiencing a red 'Stop Safely Electrical Fault Detected' warning message displayed in the message center, due to the 12V system not providing the correct electrical support.
Defender_N869_21FEB252025-03-07. Other. ELECTRICAL SYSTEM. A concern has been identified where certain vehicles are failing to complete Software Over The Air (SOTA) updates, specifically Vehicle Domain Controller (VDC) PIVI and Gateway Module A (GWM). These vehicles have now been stopped from further SOTA attempts and require a wired intervention. A software update to the TCU and GWM is required
Defender_N811_21FEB252025-03-07. Other. ELECTRICAL SYSTEM. DOOR ZONE MODULE - QUIESCENT DRAIN
Defender_N811_20DEC242025-01-08. Other. ELECTRICAL SYSTEM. Door Zone Module - Quiescent Drain
Defender_N815_15NOV242024-12-05. Other. ELECTRICAL SYSTEM. Near Field Sensing Module (NFSM) Wired Updates

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.