Hi,
I've a 2010 V70 and the ECM fuse has blown 3 times over 6 weeks. If you replace the fuse straight away it blows again. If you leave it a couple of hours and replace it, the car will start and run perfectly again. My own mechanic's diagnostics showing no fault. Any ideas on what it might be. Its a 10amp fuse.
Thanks,
T.

 

something is drawing too much current - could be a wiring issue or the ECM. The fact that you can wait a few hours to return to normal suggests something is heating up.

 

Which fuse number?