Question re heated seats

[London Lad]

My 2009 built, 2010 registered UK spec E70 35d with CIC has an option to change the heated seat heat distribution between the seat squab and the seat back.

I was in my friends 2007/8 E70 yesterday and he commented that his seats had only ever had heated squabs and no heating to the seat back. His car has CCC and I dived into the settings to adjust it for him but the setting wasn't there. I later down loaded the user manual and it shows the setting should be there!

Now I know manuals show options that may not be fitted to an individual vehicle but I really cant remember EVER having a car with heated seats that only heated the squab of the seat and not the back.

Can anyone confirm this either way please?