Hello Ian, now I'm no great shakes with the finer points of Renault technology but I would suspect that faults 2 & 3 are linked, if you cure 2 then 3 will also be sorted. If and ABS sensor or ring thingy is faulty then the ESP will think there are issues with traction and start telling you there's something amiss.
Like I say I can't help much with the finer points but I'd start looking at the ABS sensors & the rings they read off of and go from there, I'm sure a bit of searching on the forum will help you find out how to do that!
As for fault 1, give your key cards a shake by your ear and see if they rattle, they're a bit rubbish and the micro switches inside can come adrift if you so much as drop them once! If the buttons feel different when you push them then that's probably answer! There are a couple of places that fix them well & inexpensively.
I've used and can vouch for the service of:
And others have successfully used:
There are others but I think these two are known to be good & reliable.
As for fault 4.......ummm no idea.....open a window :D