# Electrical System shuts down and then returns after I disconnect and reconnect the battery

**URL:** <https://community.cartalk.com/t/electrical-system-shuts-down-and-then-returns-after-i-disconnect-and-reconnect-the-battery/129893>\
**Category:** Maintenance/Repairs\
**Created:** [November 29, 2018, 10:47pm UTC](https://community.cartalk.com/t/electrical-system-shuts-down-and-then-returns-after-i-disconnect-and-reconnect-the-battery/129893 "2018-11-29T22:47:09Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![frrussellw\_145220](https://avatars.discourse-cdn.com/v4/letter/f/7bcc69/32.png) [@frrussellw\_145220](https://community.cartalk.com/u/frrussellw_145220)\
**Post date:** [November 29, 2018, 10:47pm UTC](https://community.cartalk.com/t/electrical-system-shuts-down-and-then-returns-after-i-disconnect-and-reconnect-the-battery/129893/1 "2018-11-29T22:47:09Z")

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My 2009 Toyota Sienna started doing a very strange think. Every so often, I get in put the key in, the dashboard lights up normal but when I turn the ignition the electrical system dies. I found that if I disconnect the battery for a moment, reconnect it, everything returns to normal and the cars starts right up. The battery is good and the starter seems fine. I just lose all electric power every so often. The car does not have a remote key system. Battery terminals are clean.

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**Author:** ![It\_s-Me](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/it_s-me/32/12660_2.png) [@It\_s-Me](https://community.cartalk.com/u/It_s-Me)\
**Post date:** [November 29, 2018, 11:28pm UTC](https://community.cartalk.com/t/electrical-system-shuts-down-and-then-returns-after-i-disconnect-and-reconnect-the-battery/129893/2 "2018-11-29T23:28:46Z")

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Sounds like loose connections to me.  
If you’re able to remove and replace without using any tools, they’re loose.

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**Author:** ![George\_San\_Jose1](https://avatars.discourse-cdn.com/v4/letter/g/e5b9ba/32.png) [@George\_San\_Jose1](https://community.cartalk.com/u/George_San_Jose1)\
**Post date:** [November 30, 2018, 3:53am UTC](https://community.cartalk.com/t/electrical-system-shuts-down-and-then-returns-after-i-disconnect-and-reconnect-the-battery/129893/3 "2018-11-30T03:53:15Z")

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Concur w/IM above, I had that same symptom one time, and it was loose battery connections. A clean and tighten fixed it straight away.