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Proterra Catalyst Recall 22V114: Loose Steering Gearbox Can Cause Loss of Steering Control

NHTSA campaign 22V114, reported February 28, 2022, 724 vehicles potentially affected.

What this recall means for you

The steering gearbox bolts may loosen because the adhesive bonding the torque limiter plate to the bus body may be insufficient. A loose steering gearbox can cause a loss of steering control and increase the risk of a crash.

An authorized dealer will install a mechanical fastener and new bolts on the steering gearbox and install a new torque plate, as necessary, at no cost to the owner. Owner notification letters were mailed October 7, 2022. Owners with questions can contact Proterra customer service at 1-864-438-0000, and should check their vehicle identification number (VIN) for open recalls.

Check whether this recall is open on your vehicle

The repair is normally free at an authorized dealer.

Official recall notice

Safety recall 22V114Proterra, Inc.
Component
STEERING:GEAR BOX (OTHER THAN RACK AND PINION)
Problem
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.
Risk
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.
Notes
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.

Affected vehicles

Proterra Catalyst20152016201720182019202020212022
Proterra ZX5201520162019202020212022