Hi Saffa,cheerss mate, i take it when it is fully warmed!
There are loads of occasions when it won't work, characterized by the S/S symbol coming on in the dash with a line through it. As mentioned, the engine has to reach a set temp and not have too much load on it. Also though won't work if outside temp is very low, car is on a slope, parking brake applied, no drivers seatbelt or not achieved more than 4mph/kph?? since last S/S. I think thats about it, it's all listed in the manual.Hi Saffa,
Not sure if it has to be fully warmed just up to a pre determined temp that Audi have decided,i think also if you had radio,a/c and lots of electrical items on and running that if the power drain becoame too much if you where stuck in traffic it would re start.
Maybe just needed to top the battery up or run for the Heating/Air Con. I test drove a Lexus hybrid and it kept starting to run the climate control.Your wheels have to be pointing more or less straight on, otherwise it won't cut out.
I've noticed, after the engine cuts out, pressing hard down on the brake pedal (obv. stationary) causes the engine to restart too.
Also, today when stopped at lights and after the engine cut out, it just restarted by itself (without any intervention from me) after about 20 seconds. This happened twice. No idea why!