No complaints are listed for the 2021 Proterra ZX5. NHTSA's API and bulk file list none in this build.
Data build 2026-10-09.
NHTSA lists this vehicle as PROTERRA ZX5.
Model-generated complaint tags: No complaints are listed for tagging.
Recalls
See new recalls and investigations this week.
6 recalls.
Date: 2024-09-06. Systems: ELECTRICAL SYSTEM.
Defect: Phoenix Motorcars (Phoenix) is recalling certain 2019-2021 800V Catalyst and 2020-2022 ZX5 transit buses. The vehicle controller software may allow the electrical circuit for the radiator fan to overheat.
Consequence: Electrical circuits that overheat increase the risk of a fire.
Remedy: Dealers will update the vehicle software, free of charge. Owner notification letters were mailed October 15, 2024. Owners may contact Phoenix customer service at 1-909-987-0815.
Do not drive: No. Park outside: No.
Date: 2023-10-17. Systems: ELECTRICAL SYSTEM.
Defect: Proterra Operating Company, Inc. (Proterra) is recalling certain 2019-2022 40' and 35' Catalyst 800V transit buses equipped with ProDrive 1.0, and 40' and 35' ZX5 800V transit buses equipped with ProDrive 1.0. A transistor inside the inverter may overheat and fail, which can result in a loss of power steering and drive power.
Consequence: A loss of power steering and/or drive power increases the risk of a crash.
Remedy: Dealers will replace the inverter, free of charge. Owner notification letters were mailed December 16, 2023. Owners may contact Proterra customer service at 1-864-438-0000.
Do not drive: No. Park outside: No.
Date: 2023-02-13. Systems: VISIBILITY.
Defect: Proterra Operating Company, Inc. (Proterra) is recalling certain 2020-2022 35" Catalyst, 35" ZX5, and 40" ZX5 vehicles. The windshield wiper motors may operate intermittently or may fail to operate. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 104, "Windshield Wiping and Washing Systems."
Consequence: Inoperative windshield wipers can reduce visibility in certain driving conditions, increasing the risk of a crash.
Remedy: Dealers will replace the wiper motors, free of charge. Owner notification letters were mailed April 3, 2023. Owners may contact Proterra customer service at 1-864-438-0000.
Do not drive: No. Park outside: No.
Date: 2022-11-18. Systems: PARKING BRAKE.
Defect: 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.
Consequence: Unintentional engagement of the parking brake increases the risk of a crash.
Remedy: 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.
Do not drive: No. Park outside: No.
Date: 2022-02-28. Systems: STEERING.
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.
Consequence: 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.
Do not drive: No. Park outside: No.
Date: 2021-02-01. Systems: STRUCTURE.
Defect: Proterra, Inc. (Proterra) is recalling certain 2020-2021 40' ZX5 vehicles. These vehicles have a front fender flare which may cause mud, dirt, debris, rain and snow to splash onto the driver's side window and mirror.
Consequence: Driver visibility may become impeded, increasing the risk of a crash.
Remedy: Proterra will notify owners, and dealers will install a retrofit fender flare, free of charge. The recall began February 9, 2021. Owners may contact Proterra customer service 1-864-438-0000. Proterra's number for this recall is SC-21-13.
Do not drive: No. Park outside: No.
Manufacturer communications
103 manufacturer communications.
Communications by system| System | Count |
|---|
| ELECTRICAL SYSTEM | 43 |
|---|
| STRUCTURE | 23 |
|---|
| SERVICE BRAKES | 15 |
|---|
| POWER TRAIN | 13 |
|---|
| FUEL/PROPULSION SYSTEM | 11 |
|---|
| STEERING | 6 |
|---|
| SUSPENSION | 6 |
|---|
| UNKNOWN OR OTHER | 4 |
|---|
11013286
Date: 2024-12-09. Type: Service Bulletin/Repair Instructions. Systems: ELECTRICAL SYSTEM.
Transit Vehicle inspection of the DC cables to ensure all split blocks and swivel bundle spacers are installed.
11006603
Date: 2024-05-16. Type: Service Bulletin/Repair Instructions. Systems: ELECTRICAL SYSTEM, ENGINE, ENGINE AND ENGINE COOLING.
Software update for the 800vRRs Vehicle and Body Software to reduce the radiator fan current draw to 80%. Additionally corrects a bug to properly route ESM faults away from the coolant light icon.
11006589
Date: 2024-01-23. Type: Service Bulletin/Repair Instructions. Systems: ELECTRICAL SYSTEM.
BMS software update to the latest version. It improves current sensors performance and adjusts the isolation fault threshold value.
11006312
Date: 2024-01-22. Type: Service Bulletin/Repair Instructions. Systems: ELECTRICAL SYSTEM.
This procedure updates the BMS software to the latest version.
11009063
Date: 2023-12-11. Type: Service Bulletin/Repair Instructions. Systems: SERVICE BRAKES, SUSPENSION.
Relocation of the air compressors intake as well as adding a preliminary filter at the top of the air intake.
11011362
Date: 2023-11-21. Type: Service Bulletin/Repair Instructions. Systems: ELECTRICAL SYSTEM, POWER TRAIN.
Service bulletin fleet check for the transit buses due to potential missing split blocks on DuoPower Vehicles.
11007754
Date: 2023-10-14. Type: Service Bulletin/Repair Instructions. Systems: ELECTRICAL SYSTEM, POWER TRAIN.
This procedure describes the process for updating the 800VvRR DuoPower Vehicle, Powertrain, Body Controller, ESM and Charge Controller software to BuSCoM 2.0.
11007755
Date: 2023-10-14. Type: Service Bulletin/Repair Instructions. Systems: ELECTRICAL SYSTEM, FUEL/PROPULSION SYSTEM, POWER TRAIN.
This procedure describes the process for updating the 800VRR Prodrive Vehicle, Powertrain, Body Controller, ESM and Charge Controller software to BuSCoM 2.0.
11011235
Date: 2023-10-04. Type: Service Bulletin/Repair Instructions. Systems: POWER TRAIN.
Service Bulletin for Transit Vehicles to reduce the gearboxes PMI interval due to failing filters.
11012920
Date: 2023-10-02. Type: Service Bulletin/Repair Instructions. Systems: ELECTRICAL SYSTEM.
Repair instruction to inspect heavy duty transit vehicles for humidity in the battery pack and perform preventative maintenance.