Socket size for fuel door and trunk release handle

[slandi]

Hi all,

Going to pick up a 2012 Yaris Sedan tomorrow and the fuel door release doesn't work. The handle presents no resistance when pulled, so either the little pin is broken at the handle side or in the release near the fuel door. I'd like to bring a few tools to see if I can fix it or at least pull the cable to open the fuel door. Does anybody know the socket size, it kind of looks like a 10mm but not sure.

Thanks,

Stefano