so this came out to be a problem with the Integrated Supply module (ISM).

Using the Foxwell NT520 Tool, it diagnosed issues with DME - Valvetronic relay.

As my truck is the E70N (facelift), it dosn't come with the relay but ISM and I could hear a ticking sound from it. Checking the various connectors, noticed one of them had a corroded terminal - maybe water entered and shot it.

Changed the module and it started fine.

Here is the link to the module.



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