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June 4, 2021 Service bulletin

Transit bus software update to the batteries, charge controller and vehicle controller

Proterra technical service bulletin SC-21-077 for 2019-2021 Proterra Catalyst and 2019-2021 Proterra ZX5.

Bulletin number
SC-21-077 (SC-21-077)
Component
Electrical system
Summary
Transit bus software update to the batteries, charge controller and vehicle controller. Fixes coolant level LEDs, ESM updated specific parameters around temperatures and auto pack configuration, BMS SW resolves brick imbalance, min/max humidity levels.

Owners of these vehicles have filed 1 complaints in the electrical category.

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