Basically I was in the car park waiting for someone with car off and radio on when they left I tried to turn on the car and it was just hiss hiss hisk hisk sound came up with 'particular filter' tried again and again 'esp fault check owners manual' then 'low battery' so waited a hour for mate to come to jump start it and it worked, steering light was on same with ESP. Then started driving went away. the problem i had was in neutral or park it would go red line, this happend yesterday. today i tried to red line in neutral it doesnt red line but stays 3k and doesnt hold it bouncing up and down from 2 and half between 3. even when foot is all the down? what could be causing the rev counter not to stick to 3k revs even when launch control it doesnt stick it goes up and down with foot planted on floor.