WenmarOpen by Wenmar Pro

Service bulletins for the 2021 NovaBUS LFS

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.

102 on file from NHTSA, as of 2026-10-19.

By type

By component

Only bulletins with component: Electrical system are shown. Show all

Bulletins, newest first
BS5580E2024-04-30. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. One fire suppression system pipe may be installed backwards and interfere with an alternator cable, creating friction that could damage one or both components.
FT55672024-03-29. Service bulletin. ELECTRICAL SYSTEM. Battery Unbalanced Light Logic with AGM Battery.
FT55502024-03-29. Service bulletin. ELECTRICAL SYSTEM. The Parker PHD70 display might freeze or not work properly.
BS5543E2024-02-24. Service bulletin. ELECTRICAL SYSTEM. Battery tray structure cracks due to thin sheet metal.
FT55342024-02-01. Service bulletin. ELECTRICAL SYSTEM. The ground of the IVN unit (Intelligent Vehicle Network) could be connected to the wrong place.
FT55362023-12-22. Service bulletin. ELECTRICAL SYSTEM. Battery Tray Structure Cracks. Battery hold downs may slip between batteries.
BS5503E2023-12-02. Service bulletin. ELECTRICAL SYSTEM. The WHA11 harness has a potential chafing issue.
FT54652023-10-29. Service bulletin. ELECTRICAL SYSTEM. Erroneous Fault Codes reporting on the AVM System of Clever Devices.
FT54372023-06-19. Service bulletin. ELECTRICAL SYSTEM. The supplier Lift-U recommends the addition of a detection delay to prevent wrong fault code in the AVM.
BS5320ER12023-04-03. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. Fire light coming on in the dash, Fire detection system
BS5380E2023-04-03. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. Fire light coming on in the dash, Fire detection system.
BS5383E2023-02-28. Service bulletin. ELECTRICAL SYSTEM. Heating system cannot reach the required temperature level in cold weather.
FT53212023-02-03. Service bulletin. STRUCTURE; ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. The anchor bolt of one of the auxiliary heater high voltage cable retaining collar may come into contact with one of the coolant pipes under certain conditions.
FT5294E2023-02-01. Service bulletin. ELECTRICAL SYSTEM. Secure wiring and add wiring protection to avoid chafing/abrasion of wiring harness of the E-compressor.
FT53472022-12-26. Service bulletin. ELECTRICAL SYSTEM. Bus survey for CAN communication issues
FT5291R12022-12-21. Service bulletin. ELECTRICAL SYSTEM. Some batteries temperature sensor may have an too high internal resistance and give an erroneous battery temparature reading causing F202 light battery to turn On, on dashboard
BS5320E2022-12-03. Service bulletin. ELECTRICAL SYSTEM. Fire light coming on in the dash. Addition of a bracket so water won’t drip on temperature sensor.
FT53382022-12-01. Service bulletin. ELECTRICAL SYSTEM. Fire button pin incorrect orientation. Pin orientation not to the spec, found pin at 9 o’clock position.
LI5315E2022-10-27. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. On the Thermo King HVAC roof unit, after replacing the actuator N8897109, some customers could see the error code 36.
FT52912022-08-31. Service bulletin. ELECTRICAL SYSTEM. Some batteries temperature sensor may have an too high internal resistance and give an erroneous battery temparature reading causing F202 light battery to turn On, on dashboard
FT52752022-06-30. Service bulletin. ELECTRICAL SYSTEM. Parker Screen Software Update
FT52732022-06-30. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. Bitzer AC compressor electrical failure
FT52642022-06-04. Service bulletin. LATCHES/LOCKS/LINKAGES; ELECTRICAL SYSTEM. Door code 105 is being logged on electric doors
FT52612022-05-05. Service bulletin. STRUCTURE:BODY:DOOR; LATCHES/LOCKS/LINKAGES; ELECTRICAL SYSTEM. Door code 105 is being logged on electric doors
FT52542022-05-05. Service bulletin. EXTERIOR LIGHTING; ELECTRICAL SYSTEM. Turn Signal Foot Switch Failures

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.