Parking brakeRecall 22V-855 · Proterra vehicles
Proterra Operating Company, Inc. recall 22V-855 covers 386 Proterra vehicles for a parking brake problem, reported to NHTSA on November 18, 2022. The manufacturer's latest report (2024 Q4) shows 88% of affected vehicles repaired.
Source: NHTSA recall 22V855000 and manufacturer quarterly reports. Started by the manufacturer.
The problem
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.
The risk
Unintentional engagement of the parking brake increases the risk of a crash.
The fix
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.
Recall repairs are free. Confirm whether this recall is open on your vehicle by entering its VIN at nhtsa.gov/recalls.
How fast cars are being fixed
88%repaired
Share of affected vehicles repaired in each quarterly report the manufacturer filed with NHTSA.