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Service bulletin BIG5SEP23_33b

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 id10243669
Published by NHTSA2023-10-06
Manufacturer's numberBIG5SEP23_33b
Manufacturer's date2023-09-14
NHTSA componentELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY:THERMAL MANAGEMENT; EQUIPMENT

NHTSA's summary

A concern has been identified on certain vehicles where the battery heater coolant hoses may have been incorrectly installed.

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, Hybrid and electric drive, High-voltage battery

Vehicles listed
LAND ROVER RANGE ROVER PHEV2023 (the catalog's model; the bulletin names a series or trim of it)
LAND ROVER RANGE ROVER SPORT PHEV2023 (the catalog's model; the bulletin names a series or trim of it)

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

Recalls for the same vehicles and component
23V5680002023-08-10. ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION 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
SFCC_SEP2023_162023-10-06. Service bulletin. On certain 2023 model year Range Rover and Range Rover Sport Plug-in Hybrid Electric Vehicle (PHEV) vehicles, the battery heater coolant hoses may have been incorrectly installed.
SFCC_MAY2023_302023-06-07. Service bulletin. Customers will be reporting PHEV High Voltage battery will not take a charge.
SFCC_JAN2023_492023-02-07. Service bulletin. Customer reports coolant level low message on dash, Yellow check engine light, Red Engine temperature light, or poor idle.
SSM751862022-10-07. Service bulletin. HIGH VOLTAGE COOLANT HEATER INTERNAL FAILURE