W169 A180 cdi - not starting

[nebarezjakebwxo]

Hi

I have an issue with my car and it is not starting

Car details

• Mercedes A-class 2008
• Model - A180 CDI Diesel
• Engine - W169

Issue background

• Day1 - While driving at around 50mph , "ESP inoperative" message appeated for 2 secs. This followed by "Display inoperative" message for a second and car came to a stop. I had to remove the Key and wait a minute and then car started normally and drove good for the day.
• Day-2 - the same sequence of messages and I had to wait for 15mins for car to start and all good for that day.
• Day-3 - same sequence of messages when i was close to home and this time it is not starting at all. When put the key in position-2, it shows "Oil level cannot me measured" message. No crank but i can hear the starter

Tests

• Battery is good and showing 12.4v
• All the electricals are working [lights, locking, windows, horn, wipers, socket etc..]
• I have tried disconnecting the batttery negetive for 60mins and tried starting the car, no luck
• I've checked all the wiring under the bonnet and everything seems to be connected
• I've tried connecting an OBD2 scanner and it didnt power up.

As the OBD2 is not able to connect, iam thinking this could be due to engine ECU and I might need the new kit
As there is not crank and car was actually cut-off , i'm thinking it could be Crankshift sensor as well [ im unable to locate this to check physically]

As there are no codes to look at.. I'm completely blocked.
Any help is much appriciated