2016–2017 Proterra Catalyst Recall: Surface roughness of a guide pin in the radial brake calipers may cause…
NHTSA campaign 18V750000 · Service Brakes, Air · filed Oct 23, 2018 · verified Jul 30, 2026
The defect
Proterra is recalling certain 2016-2017 Proterra Catalyst 40 transit buses equipped with axles with radial air disk brakes. Surface roughness of a guide pin in the radial brake calipers may cause the brake carriage guide pin support bolt to break.
The risk
Breakage of the guide pin can cause loss of braking ability or loss of tire pressure, increasing the risk of a crash.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →The fix — what to do
Proterra will notify owners and have them replace the calipers on the affected axles, free of charge. Owners may contact Proterra customer service at 1-864-438-0000.
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.safercar.gov.
Affected vehicles
Related recalls
More Proterra Catalyst recalls
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- 2020–2022 Proterra Catalyst and 1 other model — Windshield wiper motors may operate intermittently or may…
- 2017–2019 Proterra Catalyst — One or more battery packs may allow liquid to leak into and…
- 2020–2021 Proterra Catalyst and 1 other model — Back pressure in the shared air exhaust for the pneumatic…
Other campaigns involving Proterra vehicles
Source: NHTSA recall database, campaign 18V750000. Data last verified Jul 30, 2026.