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Service bulletin BS5447E

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 id10244593
Published by NHTSA2023-11-01
Manufacturer's numberBS5447E
Manufacturer's date2023-10-31
NHTSA componentENGINE AND ENGINE COOLING; STEERING

NHTSA's summary

Rework allied motion e-Steering motor. 24V e-steering power supply threads length tolerances are not respect to standard.

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

Engine, Steering

Vehicles listed
NOVA BUS LFS2020, 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
20264242026-09-03. Engine
26V5730002026-09-03. ENGINE AND ENGINE COOLING:COOLING SYSTEM
20261072026-03-10. Engine
25V8220002025-11-28. ENGINE AND ENGINE COOLING:COOLING SYSTEM:PUMP
20255392025-10-09. Engine
20253842025-07-22. Steering
25V4760002025-07-22. STEERING:ELECTRIC POWER ASSIST SYSTEM
24V8730002024-11-19. ENGINE AND ENGINE COOLING:COOLING SYSTEM
24V2310002024-03-27. ENGINE AND ENGINE COOLING:COOLING SYSTEM:HOSES/LINES/PIPING/FITTINGS
23V4810002023-07-12. STEERING:HYDRAULIC POWER ASSIST:HOSE, PIPING, AND CONNECTIONS

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
BS5571E2024-04-30. Service bulletin. The HVAC generator engine pulley has bolts that are too long.
BS5580E2024-04-30. Service bulletin. One fire suppression system pipe may be installed backwards and interfere with an alternator cable, creating friction that could damage one or both components.
BS5572E2024-03-29. Service bulletin. Water Sensor in E-Steering Compartment.
BS5572E2024-03-29. Service bulletin. Water Sensor in E-Steering Compartment.
FT55542024-03-04. Service bulletin. The Cabin Coolant Level Sensors for the LOW and HIGH levels are swapped.
FT5531R12024-02-24. Service bulletin. Oil level creating different issues, Cummins recommendation following few parts issues.
LI5316ER22024-02-24. Service bulletin. Crank case vent (CCV) hoses may get damaged over time.
FT55392024-02-24. Service bulletin. Buses logging cabin and engine coolant pressure codes as reported by Clever Device.
FT55312024-01-31. Service bulletin. Oil level creating different issues in service. Cummins recommendation following few parts issues in service.
BS5490E2024-01-20. Service bulletin. Fuse holder for the electric cooling fans require an improve protection against road debris.