mgh

I have a 16 plate A4 TFSI 1.4 petrol engine with a flat battery. One day into a 3 week holiday we get a text from a neighbour to say that we had left a light on... It was the parking light (e.g. indicator was on when the car was last stopped). No problem I thought - will just jump start the car when I get home and all will be fine - ha! When I attached the cables the car started just fine - took it for a 30 mins drive, but as soon as I hit the stop button all power was lost. Couldn't even put on the hazard lights. Jumped again and it started and ran just fine, but same problem - as soon as stop button pressed all power is lost - can't even put on a light, parking brake, open the boot - anything. Called green-flag and the guy measured 15 odd volts across the battery when engine running - so alternator is charging the battery just fine. Surley leaving a light on wouldn't destroy an audi battery that is just under 3 years old?