[shadow348]

I just had what sounds like the same problem with my 2006 H3.It would start and then just shut off.Would turn the key and nothing.Waited 5mins it would start,run fine, then stop.Then when it started it would run fine for days then it would do it again.Took it to the dealer they ran test and it was the computer which is covered under emissions for 8 years 80000 miles.They replaced for free now everything is fine.Hope this helps.