Proterra ZX5 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 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 interlock override switch was not installed during production. 2022 Proterra 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 have a front fender flare which may cause mud, dirt, debris, rain and snow to splash onto the driver's side window and mirror. 2020 Proterra ZX5