Recall 22V829 affects 3 2022 Proterra ZX5 transit buses missing an interlock override switch. Proterra will provide the switch and instructions free.
Proterra is recalling 3 2022 ZX5 transit buses because the interlock override switch was not installed during production. Without that switch, a driver can be unable to override the interlock system and move the bus, which can require passengers to transfer to another bus and increase the risk of injury; the Proterra repair will be free once it is available.
Does this recall apply to your specific vehicle?
The official, free per-VIN recall check is run by NHTSA. Enter your VIN and we'll forward you directly — and add you to a free watchlist so you hear about new recalls for your vehicle.
Check my VIN at NHTSARecallNotify doesn't check your VIN — NHTSA's official tool does. We use your email only to alert you to new recalls.
Watch this vehicle for recalls
Add it to your free watchlist and we will alert you as new federal recalls are posted for your year, make and model. New-recall alerts are rolling out now.
You are on the watchlist.
We will email you as new federal recalls are posted for your vehicle.
What's wrong?
The interlock system on the 2022 Proterra ZX5 is designed to keep the bus from moving when a safety condition tells it to stay stopped. The interlock override switch is the operator control that allows authorized movement after that system has engaged and the bus needs to be repositioned safely.
On affected ZX5 buses, that override switch was left out during production. The interlock system itself still engages, but the driver has no installed switch to override it. When the interlock condition appears, the bus stays immobilized because the operator lacks the control needed to move it.
The driver will see a signal on the dash when the interlock system is engaged. That dash signal is the warning sign. If the signal appears on an affected bus, the missing override switch means the operator will not be able to move the vehicle until the condition is addressed.
Who's affected?
| 2022 Proterra ZX5 | electrical system |
|---|---|
| Units affected | 3 |
| Field incidents | NHTSA has logged no field incidents to date. |
A matching year and model does not guarantee inclusion. Check your VIN to confirm whether this recall applies to your specific bus.
What's the safety risk?
Without the override switch, an engaged interlock can leave the driver unable to move the bus. That can force passengers to transfer to another bus and increases injury risk. The dash signal tells the driver when the interlock is engaged. Repair will be free at any franchised Proterra dealer once available.
What should I do?
- Check your VIN to confirm your 2022 Proterra ZX5 is included in this recall.
- Watch for Proterra's owner letter mailed January 9, 2023, and keep it with the bus records.
- Call Proterra customer service at 1-864-438-0000 for current repair instructions, and reference recall number 22V829.
- Follow Proterra's free interlock override switch installation instructions once the repair is open; the switch lets the driver override the interlock system and move the bus.
- Keep an alternate passenger transfer plan ready until the switch is installed.
What happens at the repair
Proterra's final repair is still under development, so do not treat this as a repair that is ready to schedule yet. Once Proterra opens the dealer repair, a Proterra technician will install the interlock override switch using Proterra's instructions. The switch and installation instructions are provided free of charge, and the dealer repair will be free once available. Proterra has a general reimbursement plan on file. If you already paid for this repair before the recall notice, contact Proterra customer service at 1-864-438-0000 and ask what documentation is needed for reimbursement.
| Reimbursement | Reimbursement available |
|---|
Timeline
| November 7, 2022 | NHTSA published the recall |
|---|---|
| November 21, 2022 | Interim owner notification (was planned for this date) |
| January 9, 2023 | Owner notification mailed |
Frequently asked questions
What is recall 22V829?
Recall 22V829 covers 3 2022 Proterra ZX5 transit buses built without the interlock override switch. Without that switch, the driver lacks the intended override path for the interlock system. Proterra will provide installation instructions and the switch free of charge.
What should I do if my 2022 Proterra ZX5 is on this recall?
Check your VIN to confirm your specific bus is included in recall 22V829. If it is, contact Proterra customer service at 1-864-438-0000 and reference recall 22V829. Ask for the interlock override switch and installation instructions. The repair is free.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to provide the recall remedy at no cost. Proterra will provide the interlock override switch and installation instructions free of charge for buses included in recall 22V829.
What is the safety risk?
The safety risk is passenger transfer during an interlock-system problem. Without the override switch, the driver has no installed switch to override the interlock system and move the bus. That can require moving passengers to another bus, which increases injury risk.
When were owners notified about recall 22V829?
Proterra mailed owner notification letters on January 9, 2023. If you manage a 2022 Proterra ZX5 and never received a letter, check your VIN and contact Proterra customer service at 1-864-438-0000 with recall number 22V829.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/22V829000 |
|---|---|
| Proterra customer service | 1-864-438-0000 |
| NHTSA recall # | 22V829 |
| NHTSA recall # (full) | 22V829000 |
Source documents
-
Download Quarterly Report (PDF) - Download Owner Notification Letter (PDF)
- Download Recall Acknowledgement (PDF)
- Download Recall Report (PDF)
This article is generated from NHTSA's primary recall filings and reviewed against the source on May 20, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →