# Mazda 6 electrical problems

**URL:** <https://community.cartalk.com/t/mazda-6-electrical-problems/111102>\
**Category:** Maintenance/Repairs\
**Tags:** mazda6, mazda\
**Created:** [January 8, 2018, 10:27pm UTC](https://community.cartalk.com/t/mazda-6-electrical-problems/111102 "2018-01-08T22:27:19Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Carl3](https://avatars.discourse-cdn.com/v4/letter/c/3bc359/32.png) [@Carl3](https://community.cartalk.com/u/Carl3)\
**Post date:** [January 8, 2018, 10:27pm UTC](https://community.cartalk.com/t/mazda-6-electrical-problems/111102/1 "2018-01-08T22:27:19Z")

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My 2009 Mazda 6 idiot lights are all coming on and staying on. The car runs fine but occassionally the interior light comes on while I’m driving. I’ve been told that the 6 has four electrical grounds, three of which are located in a front wheel well and a bad connection is the proble. First is this ture and second just where are the grounds located so I can clean and retighten them? Thanks.

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**Author:** ![shanonia](https://avatars.discourse-cdn.com/v4/letter/s/9de053/32.png) [@shanonia](https://community.cartalk.com/u/shanonia)\
**Post date:** [January 8, 2018, 11:18pm UTC](https://community.cartalk.com/t/mazda-6-electrical-problems/111102/2 "2018-01-08T23:18:00Z")

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Did both first show up simultaneously? If not, even if so, could be 2 separate issues.

The interior light coming on sounds like a problem with one of the door switches.

The idiot lights might be related to the wiring through the ignition switch - as in, turn the key partway and the idiot lights (all or most) come on. Maybe try a different key, by itself (no weighty mass of dangling keys.)

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**Author:** ![COROLLAGUY1](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/corollaguy1/32/7575_2.png) [@COROLLAGUY1](https://community.cartalk.com/u/COROLLAGUY1)\
**Post date:** [January 9, 2018, 12:11am UTC](https://community.cartalk.com/t/mazda-6-electrical-problems/111102/3 "2018-01-09T00:11:41Z")

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Read the following

[http://www.6crew.com/forum/showthread.php?29478-Is-your-Mazda-6-well-grounded-LIKELY-NOT!-MUST-READ-FOR-ALL-M6-OWNERS](http://www.6crew.com/forum/showthread.php?29478-Is-your-Mazda-6-well-grounded-LIKELY-NOT!-MUST-READ-FOR-ALL-M6-OWNERS)!!

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**Author:** ![thegreendrag0n](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/thegreendrag0n/32/9265_2.png) [@thegreendrag0n](https://community.cartalk.com/u/thegreendrag0n)\
**Post date:** [January 9, 2018, 2:21am UTC](https://community.cartalk.com/t/mazda-6-electrical-problems/111102/4 "2018-01-09T02:21:41Z")

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great link, thanks for sharing!

in addition to what [6crew.com](http://6crew.com) article author suggests, I would use some electric contact lubrication in strategic places where fretting can be a possibility (like in terminals)

> **[Tech Tip: So, What's This Fretting Corrosion Stuff Anyway?](http://www.brakeandfrontend.com/tech-tip-so-what-s-this-fretting-corrosion-stuff-anyway/)**
>
> Fretting and fretting wear can occur on non-electrical things like bearings, but fretting corrosion is something that is associated more with electrical contacts. Fretting corrosion is the name for a buildup of insulating, oxidized wear debris that...