Really pleased with this Mk2 1.0 Ion I've bought for my daughter 2007, one owner full Toyota history and it's great. One quesiton is that the battery/alternator light stays on for maybe 30 seconds during the day and then maybe 3/4 minutes at night when the light is on. Is this normal? is the alternator on the way out? or could it be that having stood for a few weeks it's getting itself back into shape. Appreciate any thoughts. Thanks