I have a problem with flat battery. Battery is new! Something is flattening my battery (0,6A current) when engine is off.
I've found out that the problematic device hides behind the fuse F39.
I have disconnected fuse F39 and the current draw falls down from 0,6A to ~0,01A when engine is turned off (measured on the accumulator +/-). Car was left alone half an hour prior to doing this.
If I connect F39 then my accu gets flat really quick. Battery is brand new, 48Ah.
I have found out that F39 supplies current to few electronic devices including radio, climate control etc.
I have removed F39 and short circuit it with A-meter. A-meter shows 0,3A goes trought this fuse. If I disconnect radio, the current draw falls from 0,3A to 0,02A. So I can conclude that radio is the problem (because of wrong wiring).
But my problem is this!!
If I disconnect F39 the current draw falls down from 0,6A to 0,01A on the accumulator.
But how can this be, if current on F39 is 0,3A (with radio connected)
0,6A(total current) = 0,01A(engine off) + 0,3A(fuse) + ????
Where is the other 0,27A of current?
If I found out where that current goes my problems will go away!
Please help. And thank you!