Got a serious intermittent electrical fault where the car randomly shuts itself off with no warning and no warning EML Light complete loss of the engine like a stall with no waning and then nearly all the electrics go too when you try to restart it you get absolutely nothing when the key is in position 1 or 2 even the little red led display goes off then after 5 mins switched off the car seams to reset itself at key in the I gnostic. all the dash lights come on together and It starts no problem and drives ok done it three times in two days in the dealers now but they say there are no error codes and cannot replicate the fault need help!