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Service bulletin SSM74156

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 id10152033
Published by NHTSA2018-12-17
Manufacturer's numberSSM74156
Manufacturer's date2018-11-27
NHTSA componentPOWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE); ELECTRICAL SYSTEM

NHTSA's summary

Customers may report the engine management light (MIL) is illuminated with the possibility of a ?Traction Reduced - 2 Wheel Drive Only? warning message displayed within the instrument cluster message centre. DTC?s P1888-18, P1889-19, P1889-1F, P188E-11, P188E-12 and P188E-13 will be stored in the TCCM (Transfer Case Control Module).

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, Transmission and driveline, Transfer case

Trouble codes named

P1888, P1889, P188E

Vehicles listed
LAND ROVER RANGE ROVER VELAR2018, 2019

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
Tech_RS_NOV19_902019-12-06. Service bulletin. The wheels are binding when turning the vehicle due to binding of the clutch in the transfer case.