Proterra · United States · Mod
Proterra Catalyst, ZX5: Parking brake
Affects Proterra Catalyst, ZX5 · 2019–2022 — about 386 vehicles.
The hazard
Unintentional engagement of the parking brake increases the risk of a crash.
What to do
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.
Critical — crash/injury risk now
High — injury risk; see remedy
Moderate — fix at next service
Low — minor / informational