i press a button to switch my c max 17 plate heated screen on ...look in the handbook for the switch position. i may have missed it , but you dont mention model /year or how long you owned it, if a base focus it may not have one.
you can pop into a ford dealer with the car and the parts department will tell you on the computer if it came equipped from the factory.
i always get as built lists from my ford dealer everytime i or a member of the family purchase a ford. the dealer may charge a small amount for it or do it for free , i think the c max one is about 12 pages long.
ok having found your other post lower down i guess its a jag s type so heated elements now at the bottom if fitted.
i tryed google for you and first hit
Dose anyone know if it is possible to retro fit a heated front screen ie is the wiring already there or not or is it not possible
www.jaguarownersclub.com
sorry if link is against any rules