[peterux]

Originally Posted by peterux

IIRC there is a very small connector right on the back of the ring antenna.
You could start there but get some contact cleaner rather than WD40.
Have a look at the pictures in here.....

https://www.ecstuning.com/b-genuine-...a/61356965426/

Actually, thinking about this problem so more, I don't think you have an EWS problem. The EWS II module interrupts the supply to the starter motor so assuming you actually get the engine started, then I don't think it can be the EWS.
Sounds more like a lack of fuel or water mixed with the fuel. Try chucking a can of fresh fuel in the tank? Or maybe a blocked fuel filter?

Failing that you need to get the codes read as it could be any sensor like the crankshaft sensor being intermittent.