See (in german):
http://www.motor-talk.de/forum/neutr...-t3745891.html
Quick translation to put a car in neutral when it doesn't start (we had some starting problems in europe with the diesel while -20 degrees. However it seems a problem with the fuel quality in low temparatures, not the car itself):
With ignition on:
Hold left button on the gear stick while doing
- put gear stick one step forwards and hold 2 seconds,
- then one step back again
- then one step forwards again
Then the car is in neutral for 15 minutes
i haven't (could not) tried it for myself. this procedure is for when the car doesn't start.