Jason carrington

Hi all, just wondering if anyone has come across this before;

When the car has been running for a while it won't start, as in I turn the key and nothing happens. No starter turning, no pump priming etc, almost like its immobilised.

i have to turn the key to off then position 3 a number of times then it comes to life. No fault codes stored.
what I have noticed that when turned to position 2 all the check lights are lit except for the EML light, if this happens I know it won't start, if I turn on and off and the EML light comes on it will start. Never does it when engine is cold ! Anyone seen this before ? Thanks