Proterra, Inc.: Steering › Gear Box (other Than Rack and Pinion)
Proterra, Inc. reported this defect to federal regulators on Feb 28, 2022 and put the number of vehicles at risk at 724. The repair is free for as long as the recall stands.
The 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.
The risk
A loose steering gearbox can cause a loss of steering control, increasing the risk of a crash.
The 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.
14 model years covered
Newest first| Vehicle | Complaints | Recalls | Fires | Crashes |
|---|---|---|---|---|
| 2022 Proterra Catalyst | 0 | 3 | 0 | 0 |
| 2022 Proterra ZX5 | 0 | 6 | 0 | 0 |
| 2021 Proterra Catalyst | 1 | 5 | 0 | 0 |
| 2021 Proterra ZX5 | 0 | 6 | 0 | 0 |
| 2020 Proterra Catalyst | 0 | 8 | 0 | 0 |
| 2020 Proterra ZX5 | 0 | 6 | 0 | 0 |
| 2019 Proterra Catalyst | 0 | 9 | 0 | 0 |
| 2019 Proterra ZX5 | 0 | 3 | 0 | 0 |
| 2018 Proterra Catalyst | 0 | 9 | 0 | 0 |
| 2017 Proterra Catalyst | 0 | 8 | 0 | 0 |
| 2016 Proterra Catalyst | 0 | 6 | 0 | 0 |
| 2016 Proterra ZX5 | 0 | 1 | 0 | 0 |
| 2015 Proterra Catalyst | 0 | 4 | 0 | 0 |
| 2015 Proterra ZX5 | 0 | 1 | 0 | 0 |
What this page is, and what to do next
A recall is not an opinion. It is a Part 573 report a manufacturer is required by federal law to file once it decides a defect poses an unreasonable risk to safety, and it commits them to repairing the vehicle at no cost to the owner. The three passages above are the manufacturer’s own wording as published by NHTSA.
This page describes the campaign. It cannot tell you whether one particular car has already been through the shop — that is tracked by VIN, and only the manufacturer knows it. Check yours at nhtsa.gov/recalls or with a franchised dealer, quoting campaign number 22V114000.
Full record for the 2022 Proterra Catalyst → · Recalls carrying a do-not-drive advisory → · Where this data comes from →