Apologies for the late update, I had to transfer techstream onto another laptop and that wasnt as easy as it should have been lol.
So after blowing the tyres up the light went out and has stayed out, however there is a considerable difference in the pressures detected by the sensors and what my compressor says (no surprise).
However , it doesnt matter any more 😲 as I pick up a brand new ES F Sport next week 😊 . Ive owned the GS for 8 years so it was time for a change.
Thanks for all the help.
Kevin