Proterra S1-15 HV Battery: Electrical system — traction battery

Affects Proterra S1-15 HV Battery · — — about 99 vehicles.

The hazard

An unexpected battery management system shut down can result in a sudden loss of drive power, increasing the risk of a crash.

What to do

Proterra will replace the battery pack, free of charge. Owner notification letters were mailed November 26, 2022. Owners may contact Proterra's customer service at 1-864-438-0000.

Critical — crash/injury risk now High — injury risk; see remedy Moderate — fix at next service Low — minor / informational