# 2010 Mazda Mazda6 - dead battery and heater

**URL:** <https://community.cartalk.com/t/2010-mazda-mazda6-dead-battery-and-heater/184222>\
**Category:** Maintenance/Repairs\
**Tags:** mazda6, mazda\
**Created:** [May 19, 2022, 6:40pm UTC](https://community.cartalk.com/t/2010-mazda-mazda6-dead-battery-and-heater/184222 "2022-05-19T18:40:53Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![gary51](https://avatars.discourse-cdn.com/v4/letter/g/e56c9b/32.png) [@gary51](https://community.cartalk.com/u/gary51)\
**Post date:** [May 19, 2022, 6:40pm UTC](https://community.cartalk.com/t/2010-mazda-mazda6-dead-battery-and-heater/184222/1 "2022-05-19T18:40:53Z")

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power drawn dead battey /all the time  
isues with heater not working at all

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**Author:** ![Purebred](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/purebred/32/46796_2.png) [@Purebred](https://community.cartalk.com/u/Purebred)\
**Post date:** [May 20, 2022, 12:03am UTC](https://community.cartalk.com/t/2010-mazda-mazda6-dead-battery-and-heater/184222/2 "2022-05-20T00:03:41Z")

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Find and fix the parasitic draw **first.**  
Then deal with the heater, likely a blend door issue.

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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:** [May 20, 2022, 8:56pm UTC](https://community.cartalk.com/t/2010-mazda-mazda6-dead-battery-and-heater/184222/3 "2022-05-20T20:56:33Z")

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When you are able to get it running, take it for a drive to fully charge the battery, then the engine is off, car parked, keys removed, check to see if any lights remain on. Common culprits are the brake lights, lights in the glove compartment, engine compartment, and trunk. Interior lights of course.

Is the check engine light on?