Hello Paul, Thank you for your welcome, I've long been a reader of this forum and should have joined long before this. You are quite correct in that the later C5 which has the revised body shape and interior does require dealer action to effect this change, the mkii differs in many ways from the mki and this is one of those differences, one has to wonder why the factory would change what is for some owners a very useful feature. My reply was for a 2003 mki sx ( a point which I should have clarified ) which definitely does have this feature as owner adjustable, I did try it again on my cars just to confirm this prior to replying to rpsamme, I've not tried to change the mirror foldback on my 2006 car but will hookpup my Lexia to check this. Hope this assists .