My Sat Nav started behaving erratically i.e blank intermittenty and then appeared to return to normal however the next time I went to stsrt the car the battery was flat. The battery is less than 6 months old. I checked the fuses and there is a drain on fuse 43 after he car has " gone to sleep!" If I pull this fuse and leave the car the battery holds its charge.
according to the fuse chart 43 is for instrument cluster and on board diagnstic 2.
I have not got a full wiring diagram could it be a relay problem??
Any help in this matter would be greatly appreciated