Hi and Welcome to JustAnswer! My name is XXXXX XXXXX I will do my best to help.
Radio has small battery inside to keep its memory alive.
it is like those on remote controls.
and that is what it is complaning for,
do i have to take the radio out to replace the battery/
what model is your car?
ford focus 2007
you better find a plave where they work strictly audio systems on cars, it will be a lot cheaper than dealer or regular repair shop.
ok thank you , you ve been a great help
you are welcome
click here to see. pin #1 is orange and black wire that should have voltage all the time check that first. Click Here to see fuse location. inspect fuse F231. use test light volt meter may give you faulty reading as it may show 12 volt, but can not show current.