Proterra Catalyst recalls
- Proterra vehicle controller software may allow the electrical circuit for the radiator fan to overheat. 2019–2020 Proterra Catalyst, ZX5
- Proterra transistor inside the inverter may overheat and fail, which can result in a loss of power steering and drive power. 2019 Proterra Catalyst, ZX5
- Proterra windshield wiper motors may operate intermittently or may fail to operate. 2020 Proterra Catalyst, ZX5
- Proterra one or more battery packs may allow liquid to leak into and accumulate in the battery pack enclosure. 2017 Proterra Catalyst
- Proterra back pressure in the shared air exhaust for the pneumatic ride height system and parking brake control valve may engage the parking brake while the vehicle is in motion. 2019–2020 Proterra Catalyst, ZX5
- Proterra plexus adhesive between the torque limiter plate and the bus body may be insufficient, causing the bolts that secure the steering gearbox to loosen. 2015 Proterra Catalyst, ZX5
- Proterra software defect in the body controller that operates the door motor may allow the rear door to open unexpectedly. 2019 Proterra Catalyst
- Proterra lack of plexus adhesive between the torque plate and the vehicle chassis may cause the bolts securing the steering gear box to loosen. 2018 Proterra Catalyst
- Proterra power steering hose located at the pump and reservoir may leak and sweat fluid through the hose. 2019 Proterra Catalyst
- Proterra body controller software update may have disabled the audible and visible warnings that notifies the operator that the brake interlock could be engaged. 2019 Proterra Catalyst
- Proterra temperature and vibration stresses may cause the tempered glass roof hatch to shatter. 2018 Proterra Catalyst
- Proterra vehicles are equipped with swivel valves that may insufficiently protect the air brake system from an air leak between the service reservoir and the source of air pressure. 2017 Proterra Catalyst
- Proterra mesh cap covering the airline for the tow fitting can be clogged with road debris in inclement weather, possibly resulting in a build up of air pressure in the rear brake system. 2015 Proterra Catalyst
- Proterra affected vehicles are equipped with a four point height control system that may cause a load imbalance, overloading the front tires. 2015 Proterra Catalyst
- Proterra affected vehicles lack a Graham White air brake supply reservoir, possibly resulting in long term moisture build up in the air brake system. 2016 Proterra Catalyst
- Proterra certification label may list an incorrect gross front axle weight rating and/or incorrect tire pressures. 2015 Proterra Catalyst
- Proterra surface roughness of a guide pin in the radial brake calipers may cause the brake carriage guide pin support bolt to break. 2016 Proterra Catalyst