Proterra · United States · High
Proterra ZX5, Catalyst: Steering — gear box (other than rack and pinion)
Affects Proterra ZX5, Catalyst · 2015–2022 — about 724 vehicles.
The hazard
A loose steering gearbox can cause a loss of steering control, increasing the risk of a crash.
What to do
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.
Critical — crash/injury risk now
High — injury risk; see remedy
Moderate — fix at next service
Low — minor / informational