Change Citroen

Greetings to all.
My question I think it is simple
I have a Citroen Xsara 1.9 Turbo Diesel I would like to change wire and filters, someone can indicate key to the carter nut and any more help I thank you very much
Grcias

I recommend that you take it somewhere to do it Yake the key of the citroen varies greatly for the year and second the filter key you will have to buy it also the filter is uvicado in a complicated half place it is best to have a place, it is not expensive that they relat to you and you will save you many lucky problems.

Thanks for your answer,
they charge me € 140 but I like to touch the car alone anyway if I see that I can not therefore the workshop. Thank you
I will tell you.