Wierd Ka charging and steering fault

[gyislander]

Desperately need someone with electrical know how so going to try posting here as I unfortunately got no response in the Ka section.

I have a 2011 Ka tdci, starts first turn of the key but the battery light stays on and the power steering doesn't click on (no fault light though). Switch off and restart (but only within 20 secs) and everything is perfect. If I even just click ignition on, then off and then start everything is ok. The car is charging at 14v even though the light is on. I have tried a new battery and a replacement steering unit but no joy. I have back pinned all the steering unit wires and there are no differences between the faulty or perfect scenarios.

My scanner doesnt read the Ka properly but does as a Fiat 500 or Panda. I have no fault codes at all. The only thing of interest when scanning is that in live data the engine status remains at "parking" on first start but changes to "starting" then "running" when things are fine.

I'm thinking that on first start up (or delayed restart) for some reason the car doesn't think its charging or even running or got the voltage to power the steering but why is it ok within 20 secs or after simply clicking the ignition on ?

After 40 DIY years most mechanicals hold no fear but modern electronics remain a dark art !