2021 NOVA BUS LFS ARTIC

VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:WINDSHIELD:ELECTRICAL HEATING ELEMENT

Nova Bus (US) Inc. (Nova Bus) is recalling certain 2019-2024 LFS and 2019-2023 LFS Artic buses. The auxiliary heater module may allow contaminants to enter the electronic controller, which can cause an electrical short. Additionally, the auxiliary heater may fail, causing the defrosting system to not function properly.

Risk: An electrical short circuit can increase the risk of a fire. Additionally, a windshield defrosting system that does not function properly can decrease the driver's visibility, increasing the risk of a crash.

PARKING BRAKE:CONVENTIONAL:AIR

Nova Bus (US) Inc. (Nova Bus) is recalling certain 2021-2024 LFS and 2021-2023 LFS Artic buses. An air leak may occur in the parking brake valve and unintentionally engage the parking brake without activating the brake lights.

Risk: A bus that stops suddenly without activating brake lights increases the risk of a crash.

ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR

Nova Bus (US) Inc. (Nova) is recalling certain 2021-2022 LFS Artic and 2021-2023 LFS buses. The alternator power cable nut may not have been tightened properly.

Risk: A loose nut can cause electrical arcing, increasing the risk of a fire.

EQUIPMENT:APPLIANCE:AIR CONDITIONER

Nova Bus (US) Inc. (Nova Bus) is recalling certain 2020-2023 LFS and LFS Artic transit buses. The brackets retaining the Mobile Climate Control HVAC Unit could fail and allow the unit to detach from the bus.

Risk: An HVAC unit that detaches from a bus can create a road hazard, increasing the risk of a crash.

ELECTRICAL SYSTEM:WIRING:FUSES AND CIRCUIT BREAKERS

Nova Bus (US) Inc. (Nova) is recalling certain 2017-2023 LFS and 2017-2022 LFS Artic transit buses. The 24-volt power cable and grounded mounting fastener that secures the fuse holder may short circuit.

Risk: An electrical short circuit can overheat the fuse holder and increase the risk of a fire while driving or parked.

POWER TRAIN:DRIVELINE:DRIVESHAFT

Nova Bus (US) Inc. (Nova) is recalling certain 2019-2023 LFS and LFS Artic transit buses. The transmission yoke may separate, resulting in driveshaft separation and a sudden loss of drive power.

Risk: A sudden loss of drive power can increase the risk of a crash. Additionally, a disabled bus may require an evacuation procedure in an uncontrolled traffic situation, increasing the risk of injury to passengers.

ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN

Nova Bus (US) Inc. (Nova Bus) is recalling certain 2019-2021 LFS and 2019-2022 LFS Artic buses. The radiator fan's electrical fuse holder may experience excessive corrosion which can result in an electrical short.

Risk: An electrical short increases the risk of a fire.

EXTERIOR LIGHTING

Nova Bus (US) Inc. (Nova) is recalling certain 2016-2020 LFS and 2013-2022 LFS Artic buses. The momentary STOP and YIELD text message board is duplicating the stop light and turn signal light signals. As such, these vehicles fail to comply with the requirements of the Federal Motor Vehicle Safety Standard number 108, "Lamps, Reflective Devices, and Associated Equipment."

Risk: The momentary text message board duplicating light signals may cause confusion, increasing the risk of a crash.

STEERING:CRITICAL FASTENERS

Nova Bus (US) Inc. (Nova Bus) is recalling certain 2018-2022 LFS and 2018-2021 LFS Artic buses equipped with a Bosch steering gear box. The steering gear box may have an insufficient clamp load, which may allow the mounting plate sub-assembly fasteners to loosen and possibly fall out.

Risk: Missing fasteners may cause a of a loss of steering, increasing the risk of a crash.