# 2011 Toyota Prius - Won't start

**URL:** <https://community.cartalk.com/t/2011-toyota-prius-wont-start/143250>\
**Category:** Maintenance/Repairs\
**Tags:** toyota\
**Created:** [June 29, 2019, 10:05am UTC](https://community.cartalk.com/t/2011-toyota-prius-wont-start/143250 "2019-06-29T10:05:02Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![CarlosRobles](https://avatars.discourse-cdn.com/v4/letter/c/f04885/32.png) [@CarlosRobles](https://community.cartalk.com/u/CarlosRobles)\
**Post date:** [June 29, 2019, 10:05am UTC](https://community.cartalk.com/t/2011-toyota-prius-wont-start/143250/1 "2019-06-29T10:05:02Z")

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I installed new auxiliary battery ( I buy at the Toyota dealer )  
and still no start, only start with jump

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**Author:** ![texases](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/texases/32/862_2.png) [@texases](https://community.cartalk.com/u/texases)\
**Post date:** [June 29, 2019, 10:29pm UTC](https://community.cartalk.com/t/2011-toyota-prius-wont-start/143250/2 "2019-06-29T22:29:56Z")

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The small (12V) doesn’t start the car, the large battery does. The 12V system powers the computers, etc. If it starts with a jump, there’s something wrong with the 12V system, maybe there’s a problem with the battery cables.