onboard computer
 

Hi,
I have Hi cluster on 2004 x5 4.4, but dont have bc button on mid.
Do I need only new mid with bc function or obc retrofit kit too.

my last questions are all unanswered.
why? dont you know or dont you want to answer and help.

if your clock button toggles in the left and right positions, then it's just a mislabled button.

your car should have a BC.

i think previous owner just changed low with high cluster, is it possible?

There is an article on the home page outlining such a change.