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Service bulletin N644NAS1

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 id10206250
Published by NHTSA2022-01-08
Manufacturer's numberN644NAS1
Manufacturer's date2021-12-13
NHTSA componentSERVICE BRAKES, AIR:ANTILOCK:ABS WARNING LIGHT; ELECTRICAL SYSTEM

NHTSA's summary

MALFUNCTION INDICATOR LAMP (MIL) NOT ILLUMINATING

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

Brakes, Electrical system, Anti-lock brakes

Vehicles listed
LAND ROVER DEFENDER2020

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

Other bulletins for the same vehicles and component
S014SOTA4.1.1v32024-01-09. Service bulletin. Enhancements to the following systems: Wireless Device Charger, High Voltage (HV) Battery Charge Control, Sound System, ABS (Anti-Lock Braking System), Belt Integrated Starter PHEVs, Rear Camera for cars without 360 view.
NAS21.12.0062022-01-08. Service bulletin. MALFUNCTION INDICATOR LAMP (MIL) NOT ILLUMINATING