I want to change the cabin air filter myself anyone know if it is difficult or where to find it? The dealer wants a fortune for it and I can't see it being that difficult to replace.
Cheers

check on

www.hmaservice.com

register, logon and clic on "service information", from there you'll have access to a lot of informations on any Hyundai model. (including the info you are looking for)

I was told by Hyundai of America that the 04 Santa Fes shipped to the USA did NOT have a cabin air filter. I became suspicious when my dealer wanted to charge me $55 to change it but no mention of it in the owner's manual.

There IS a cabin filter for the Santa Fe, it's not installed from factory and you have to ask for it.

the part number is : 97619-3D000

55$ is a fair price for a cabin filter change, the filter alone usually cost around 40$ (might depend on the model and if the dealer is greedy).

it's ALL in the link I provided above!