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Service bulletin N400NAS3

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 id10178069
Published by NHTSA2020-08-06
Manufacturer's numberN400NAS3
Manufacturer's date2020-07-01
NHTSA componentELECTRICAL SYSTEM; EQUIPMENT

NHTSA's summary

A potential issue has been identified on certain Land Rover vehicles within the listed Affected Vehicle Range may experience intermittent operation of electrical equipment due to insufficient ground contact.

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, Equipment and accessories

Vehicles listed
LAND ROVER DISCOVERY2019, 2020

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

Recalls for the same vehicles and component
23V3930002023-06-01. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; LATCHES/LOCKS/LINKAGES:DOORS:LATCH
20213812021-06-17. Electrical
21V4570002021-06-17. ELECTRICAL SYSTEM:12V/24V/48V BATTERY
20205332020-11-10. Electrical
20V6940002020-11-10. ELECTRICAL SYSTEM:12V/24V/48V BATTERY

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
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.
Discovery_N861_20JUN252025-07-08. Other. Mild Hybrid Electric Vehicle (MHEV) Battery Offline
TUCC_APR2025_182025-05-05. Other. Leaking windshield that caused the water ingress on the electrical component.
SFCC_MAR2025_452025-04-07. Other. 'Stop Safely Electrical Fault Detected' warning message displayed in the message center.