weird ECU problem ???
 

A few weeks ago, alternator on my wife's 2010 accent went, replaced and car was fine, then about a week or so ago, she got in and it wouldnt start, turned over but wouldn't fire. I didn't have a chance to look at it for about 2 days, went out and it started right up. Chk engine light came on, she had it checked and it said to reset the ECU, did and car started fine, but every few days it would not start, but if you went and jiggled the maxi fuse for ECU A, car would start, i replaced the maxi fuse, cleaned the contats and car was fine for about a week, now it wont start again, tried replacing maxi fuse with no luck. Anyone ever have this issue? and what did you do. ?

If wiggling maxi fuse was an indication of where the issue lays
Then would check the fuse box
But, no, never had this particular issue

Replace the starter relay, it's located in the engine compartment fuse box. (it plugs in easily)
The contacts on the relay eventually wear out, then the starter will not operate. (no, this is NOT a fuse issue it's the relay)
Yes I had the same issue......hope that helps you.