Electronics Failure Causes Train to Stop

Hello,

'Yesterday, my Golf V 1.9 TDI (77 kW) broke down.'
I was driving downtown when the warning lights for ESP (Electronic Stability Program) and the exhaust system came on.
Preheating indicator and oil light came on.
In addition, the oil warning alarm sounded, and the MFA (Multi-Function Display) showed 'Exhaust system, please visit a workshop.'
Apart from that, I haven't noticed any change in the driving experience.
I then stopped and turned off the ignition.
After that, I was no longer able to start the engine.
Bei den Startversuchen, die ich unternommen habe, blinkten sofort wieder die o.g. Warning lights.
I left the car there and tried to start it again three hours later.
The engine started right up, and I was able to drive home.
Allerdings gingen nach kurzer Fahrzeit wieder die o.g. Warning lights on.
However, I don't understand the connection between the various warnings.

I would like to thank you in advance for any suggestions you may have.

Best regards,

Frank.

Darn it! My crystal ball is broken at the moment.

Yes, it probably won't work without reading the data, right? What else should I tell you about it?