Hi Folk's
firstly, thanks for the responses which I do really appreciate ... but, rather than buying someone else's issue or a potential issue down the road I decided to go the iPod and OEM connector route with the cd changer ... found a mighty solution on this site which allows you to connect your iPod to the stereo and be able to manage the functions of the iPod from the stereo head ... so if you are interested do a search on 'gromaudio' ... there is a detailed viable and much cheaper solution to the 'error1' and 'error3' which these standard stereo's seem to exhibit ...
Just as an FYI - my is200 (Sport - fab motor :D ) is 51 plate and on the off-chance I rang Lexus Woodford about the possibility of getting my 13906 change out ... no way under warranty as its 6+ years old but when I asked about price of replacement and fitting, Francis the customer service lady stated that it would be about , wait for it, £2000 to replace :tsktsk: ... I looked on e-bay and there is a bidding war going on so that’s why I went for the iPod solution ... I didn’t want to pay for something that has a strong possibility historically of issues arising in the future ... a simple alternative solution which is well documented on this site ...
just awaiting on the interface now from gromaudio - cant wait to get it hooked up and play the contents of the iPod, I'll be wasting petrol just to listen to the playlists ...