2+0 has it behind the driver's side rear wheel well. Right under the fill spout if you can believe it. You can find it by removing the interior panels in the back.
In the 2+2 I think they cram it under the already jam packed hood up where the HICAS hydrolic stuff would be on a TT near the front right fender. I have no experience with the 2+2 so I may be wrong here.