This article is meant to help you diagnose this exact. Webif it turns on, the culprit is most likely the battery, and you need to change it. Webjun 19, 2019 · here are the most common reasons why the toyota prius won’t start when the engine is not cranking.

If you have a battery post that looks like. Additionally, keep the terminals and connectors clean so that electricity can flow without blockage.