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Service bulletin SSM75423

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 id10202939
Published by NHTSA2021-11-03
Manufacturer's numberSSM75423
Manufacturer's date2021-10-11
NHTSA componentELECTRICAL SYSTEM

NHTSA's summary

XCL DISTORTION OR RATTLE NOISE PRESENT WHILE USING THE AUDIO SYSTEM

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 DEFENDER2019
LAND ROVER DISCOVERY2016
LAND ROVER DISCOVERY2017, 2018, 2019, 2020, 2021, 2022
LAND ROVER RANGE ROVER2016, 2017, 2018, 2019, 2020, 2021, 2022
LAND ROVER RANGE ROVER EVOQUE2016, 2017, 2018, 2019, 2020, 2021, 2022
LAND ROVER RANGE ROVER SPORT2016, 2017, 2018, 2019, 2020, 2021, 2022
LAND ROVER RANGE ROVER VELAR2017 (the catalog's model; the bulletin names a series or trim of it)
LAND ROVER RANGE ROVER VELAR2018, 2019, 2020, 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
23V3930002023-06-01. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; LATCHES/LOCKS/LINKAGES:DOORS:LATCH
23V0310002023-01-26. BACK OVER PREVENTION:WARNINGS:EXTERNAL/PEDESTRIAN ALERT; ELECTRICAL SYSTEM:SOFTWARE
22V5810002022-08-04. ELECTRICAL SYSTEM:ADAS
20213812021-06-17. Electrical
21V4570002021-06-17. ELECTRICAL SYSTEM:12V/24V/48V BATTERY
20V7510002020-12-03. ELECTRICAL SYSTEM:INSTRUMENT PANEL:SPEEDOMETER/ODOMETER; ELECTRICAL SYSTEM:SOFTWARE
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
N861 Range Rover 17JUL262026-08-05. Other. Mild Hybrid Electric Vehicle (MHEV) Battery Offline
N861 Range Rover 16JUN262026-07-08. Other. 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.
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.
N811 Discovery 15MAY262026-06-04. Other. Door Zone Module - Quiescent Drain
N861 Range Rover 17APR262026-05-07. Other. On certain 48V Mild Hybrid Electric Vehicle (MHEV) battery enters an offline state and no longer communicates or functions as intended. Malfunction Indicator Lamp (MIL) might be illuminated,
N811 Discovery 17APR262026-05-07. Other. Door Zone Module - Quiescent Drain
N928 Range Rover 20MAR262026-04-07. Other. Software Over The Air (SOTA) updates are failing to complete.
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