320D stopped working

Hi,



I have a problem. My 2007 320D just stopped working for no apparent reason, here's a short timeline:



- was not driving it for a couple of weeks

- was standing outside in the cold (up to -12C at night)

- had to move the car out of the way yesterday (a few meters only) and noticed some squealing noise but just thought it might be because of the cold and just needs to get warm

- wanted to go out today (minutes ago) and was warming up the car a bit before driving

- looked for the source of squealing sound and found out that it was coming from the back of the car (exhaust maybe) - most noticeable from under the car closest to rear right wheel

- after a few minutes the far just shut off (some warning sign of the car with arrows to front and back came up and then just ! mark)

- can no longer press the break pedal to start the car normally (auto box)

- car start without break pedal being pushed (should not do that under normal circumstances) and shuts off immediately



Battery is new, glow plugs new, etc. Car was starting up without issues before this. Any idea what might be wrong?



The only fault code I was not able to get rid of was:

46D3 - Internal ECU 4 / Internal Control Unit 4 / Control unit internal 4