Passport has to be valid for at least another 6 months
and Swiss citizens do not need a visa. A 90 day entry is standard.
Did not get checked, but I am sure that officially you
are required to have one.
The standard ownership papers are required for the various customs clearance. They will ask for the Carnet de Pasage
Own license plates are sufficient.
How it went
Immigration: You have to fill out a immigration form, this and your passport will both be stamped. Keep a copy of the imigration form as they will request it when you leave.
Customs: Customs requested the Carnet, and in addition will fill out or make you fill out a temporary vehicle import document. There is also a customs check of the vehicle, in particular for vegetable or animal products which are not allowed in the country.
Point of Exit
26.02.07 - San Sebastian, Tierra del Fuego
07.03.2008 - Monte Aymond
27.03.2008 - Cohaique Alto
How it went
Immigration: The passport just had to be stamped out, and the immigration document turned back in.
Customs:The Carnet was will be stamped out, and they will keep the temporary import document.
Extending a Visa:
are the details of the border crossing into this particular country.
The information is correct as of the date on which the border was
crossed. But, due to the stability and vagaries of the regimes involved,
it is prudent that you get additional data directly from the embassy
involved, preferably in your own country. Also you should keep in
mind that the procedure can vary depending on exactly who is on duty.
So never assume anything is a particular way, and regardless of what
anyone says, the impossible is often possible if you are in the right
place at the right time. Good Luck.