Citroen C4 Engine turn off automatically problem

[dishow]

Im new to this forum so if i made the topic on wrong place im sorry,

I have bought a new citroen c4 1.6 diesel automatic 2012, i have a problem with the car that when eco mode is on and when i stop i hear a squeky noise from upfront of the car nearby from the engine and car turns off automaticaly and tells me to put the gear on N to turn on the car , so basically my car turns off automatically with the squeky noise what could be the problem ? Thanks in advance.

[RichardW]

Does the squeak happen when it tries to restart the engine?