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.
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.)
Read the following
great link, thanks for sharing!
in addition to what 6crew.com article author suggests, I would use some electric contact lubrication in strategic places where fretting can be a possibility (like in terminals)