01 / OFFICIAL CAMPAIGNS
2019 Proterra ZX5 recall campaigns
NHTSA 23V697000
- Component
- ELECTRICAL SYSTEM
- Report received
- October 17, 2023
- Potential units
- 238campaign-wide
Defect and consequence
Defect: Proterra Operating Company, Inc. (Proterra) is recalling certain 2019-2022 40' and 35' Catalyst 800V transit buses equipped with ProDrive 1.0, and 40' and 35' ZX5 800V transit buses equipped with ProDrive 1.0. A transistor inside the inverter may overheat and fail, which can result in a loss of power steering and drive power.
Why it matters: A loss of power steering and/or drive power increases the risk of a crash.
Remedy
Dealers will replace the inverter, free of charge. Owner notification letters were mailed December 16, 2023. Owners may contact Proterra customer service at 1-864-438-0000.
Owner notification: December 16, 2024 · Filing manufacturer: Proterra Operating Company, Inc.
NHTSA 22V855000
- Component
- PARKING BRAKE
- Report received
- November 18, 2022
- Potential units
- 386campaign-wide
Defect and consequence
Defect: Proterra Operating Company, Inc. (Proterra) is recalling certain 2020-2021 Catalyst and 2019-2022 ZX5 transit buses. 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.
Why it matters: Unintentional engagement of the parking brake increases the risk of a crash.
Remedy
Proterra will install a redesigned air circuit, free of charge. Owner notification letters were mailed on December 21, 2022. Owners may contact Proterra's customer service at 1-864-438-0000.
Owner notification: December 21, 2022 · Filing manufacturer: Proterra Operating Company, Inc.
NHTSA 22V114000
- Component
- STEERING
- Report received
- February 28, 2022
- Potential units
- 724campaign-wide
Defect and consequence
Defect: Proterra, Inc. (Proterra) is recalling certain 2017-2019 35 foot Catalyst E2, 2017-2019 40 foot E2, 2020-2021 35 foot RR, 2019-2020 40 foot RR, 2019-2022 40 foot ZX5, and 2020-2022 35 foot ZX5 buses. The plexus adhesive between the torque limiter plate and the bus body may be insufficient, causing the bolts that secure the steering gearbox to loosen.
Why it matters: A loose steering gearbox can cause a loss of steering control, increasing the risk of a crash.
Remedy
Dealers will install a mechanical fastener and new bolts on the steering gearbox, and install a new torque plate, as necessary, free of charge. Owner notification letters were mailed October 7, 2022. Owners may contact Proterra's customer service at 1-864-438-0000.
Owner notification: October 7, 2022 · Filing manufacturer: Proterra, Inc.
02 / COMPONENT BREADTH