Problem with motor start *HELP* :D

[Levente]

Hi guys i need your advices once again. Please help.

Problem is the following:

The electronic system self shutdowns the motor when i want to start it.

So i turn the ignition key and the moment the engine would start it just simply goes off with a BRRRRRRRR sound. today was the third time this happened since i bought the car (this year september).

For the first 2 cases i called the bmw mobileservice, they pluged in their laptop, reseted the electronics and woala engine started again, but they couldnt explain the cause. lol? So im asking you guys if you have any idea what the hell causing this problem?

The first case happened after 1 month i bought the car, at first i thought maybe because i left the car for 2 weeks in the garage and didint drive it, but after another 1 month it happened once again while i had a trip to Landsberg, i parked for about 20 minutes and then when i wanted to start the same shit happened. its a bit frustrating. please help

thanks in advance