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

Bulletins, newest first
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.
FT53852023-04-03. Service bulletin. EQUIPMENT; SEATS. American seating lower bracket hardware missing. Seating lower bracket hardware is missing due to insufficient torque and sealant.
FT53912023-04-03. Service bulletin. EQUIPMENT; SEATS. American seating lower bracket hardware missing. Seating lower bracket hardware is missing due to insufficient torque and sealant.
FT53862023-04-03. Service bulletin. EQUIPMENT; FUEL SYSTEM, DIESEL. Loose fuel tank due to improperly torqued hardware and missing hardware.
FT53612023-04-03. Service bulletin. ENGINE AND ENGINE COOLING. Coolant pipe assy failing. The adaptor on the Coolant pipe assembly between the engine and circulation pump broke in service at the beginning of the copper thread.
BS5356E2023-04-03. Service bulletin. EQUIPMENT. Lexan panels cracking at mounting holes. Need to change the attachment of Lexan panels due to apparent cracks.
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.
FT53482023-02-24. Service bulletin. EQUIPMENT. Wheelchair ramp deploy switch hardware loose.
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.
FT5145R12023-02-02. Service bulletin. STRUCTURE. Due to the lack of bonding surface between the two large roof top panels, when thermal expansion and contraction occur these panels separate and leave an opening
FT51942023-02-02. Service bulletin. EXTERIOR LIGHTING. Destination sign controllers were failing at a high rate. Water intrusion causing signs to fail cracks on lights
FT53602023-02-01. Service bulletin. SERVICE BRAKES, AIR. Reposition Electrical Air Compressor cooling hose to avoid chafing/abrasion.
FT5294E2023-02-01. Service bulletin. ELECTRICAL SYSTEM. Secure wiring and add wiring protection to avoid chafing/abrasion of wiring harness of the E-compressor.
FT53292022-12-26. Service bulletin. SUSPENSION. Leveling valve N92260 found out of adjustment with damaged sway bar bushing bracket
FT53282022-12-26. Service bulletin. SUSPENSION. Leveling valve N92260 found out of adjustment
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.
FT53142022-12-01. Service bulletin. POWER TRAIN. P-clamp cannot withstand the load of the cooling pipes. Thicker P-clamp as a containment solution.
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.
BS5301E2022-10-03. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM; EQUIPMENT. HVAC deflectors are breaking at the folded attachment points. The brackets broke right at the bending due to a sharp curve
BS5300E2022-10-03. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM; EQUIPMENT. HVAC deflectors are breaking at the folded attachment points. The brackets broke right at the bending due to a sharp curve

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