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Service bulletin N647NAS2

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)
TypeService bulletin
NHTSA id10211015
Published by NHTSA2022-05-05
Manufacturer's numberN647NAS2
Manufacturer's date2022-04-28
NHTSA componentENGINE; ELECTRICAL SYSTEM

NHTSA's summary

UNABLE TO DISENGAGE AWD

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, Engine

Vehicles listed
LAND ROVER DISCOVERY SPORT2021
LAND ROVER RANGE ROVER EVOQUE2021

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

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
N861 Range Rover 15MAY262026-06-04. Other. 48V Mild Hybrid Electric Vehicle (MHEV) battery enters an offline state and no longer communicates or functions as intended.
N892v3 - 01MAY262026-06-03. Service bulletin. Arduous customer drive cycles have been found to accelerate the degradation of engine oil, leading to generation of engine oil sludge deposits in high pressure engine oil galleries of the engine and inside the Continuous Variable Valve Lift (CVVL) unit.
N869 Range Rover 20MAR262026-04-07. Other. Software Over The Air (SOTA) updates are failing to complete.
N869 DISCOVERY 20MAR262026-04-07. Other. Software Over The Air (SOTA) updates are failing to complete.
SSM76411 - 10MAR262026-04-06. Other. Smart Key Deactivated message on instrument cluster and unable to start their vehicle
Range Rover_N861 02-20-202026-03-06. Other. The 48V 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), loss of start/stop functionality and no communication during diagnostic sessions.
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.
SSM000017-19DEC252026-01-09. Other. Coolant fan may continue running at high speed after ignition shut-off
TUCC_DEC2025_392026-01-08. Other. A battery warning light on and or electrical system failure message is displayed on instrument cluster.
TUCC_JUL2025_322025-08-07. Other. Passive Entry doesn't respond intermittently to access car. Have to use key buttons to get in.