It shows on the screen in my image.Hello,
Thanks, but as visible on my later screenshots F5 wasn't avaiable. Is it visible in only one menu?
I don't know what's up with your lexia but you tell us it is a 2005 model, but your lexia shows it as a 'new look Citroen C3', which the 2005 model is definitely not. I would suggest identifying the vehicle correctly for lexia to get the best chance to communicate with it.
To get lexia to work you should allow it to identify the vehicle by the VIN it discovers then confirm it matches the expected VIN (i've never seen it not correct).