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Service bulletin BS5079E

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 id10194813
Published by NHTSA2021-06-02
Manufacturer's numberBS5079E
Manufacturer's date2021-05-10
NHTSA componentELECTRICAL SYSTEM

NHTSA's summary

A 12V relay is installed instead of a 24V relay for the alternator ouput status signal

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
NOVA BUS LFS2020
NOVA BUS LFS ARTIC2019, 2020 (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
20251762025-04-07. Electrical
23V6070002023-08-31. ELECTRICAL SYSTEM:WIRING:FUSES AND CIRCUIT BREAKERS
20233482023-06-14. Electrical
20223102022-06-13. Electrical
22V4160002022-06-13. ELECTRICAL SYSTEM:WIRING:FUSES AND CIRCUIT BREAKERS; ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN
20V3540002020-06-15. STRUCTURE:BODY:DOOR:HINGE AND ATTACHMENTS; ELECTRICAL SYSTEM:SOFTWARE
19V2740002019-04-05. ELECTRICAL SYSTEM

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
FT55672024-03-29. Service bulletin. Battery Unbalanced Light Logic with AGM Battery.
FT55502024-03-29. Service bulletin. The Parker PHD70 display might freeze or not work properly.
BS5543E2024-02-24. Service bulletin. Battery tray structure cracks due to thin sheet metal.
FT55362023-12-22. Service bulletin. Battery Tray Structure Cracks. Battery hold downs may slip between batteries.
FT54652023-10-29. Service bulletin. Erroneous Fault Codes reporting on the AVM System of Clever Devices.
FT54332023-09-26. Service bulletin. Support for infotainement displays may crack. Overhead Screen Display (for 40' buses)
FT54342023-09-26. Service bulletin. Support for infotainement displays may crack. Overhead Screen Display (for 60' buses)
FT54372023-06-19. Service bulletin. The supplier Lift-U recommends the addition of a detection delay to prevent wrong fault code in the AVM.
BS5320ER12023-04-03. Service bulletin. Fire light coming on in the dash, Fire detection system
FT52432023-02-25. Service bulletin. ECP radiator failures deemed to be due to overpressure events.