Hi, I've just picked up a 2007 957 Cayenne, it's got a PCM2.1 unit in the dash but having removed it I noted there was no plug going into the GPS socket at the back so I assume I have a module elsewhere. Googling says it might be under the passenger seat, but I can't find it there, I've checked the 2 compartments either side of the boot, they are empty. Do I have one, if so where on earth is it?

 

It should be right under the passenger seat like you said. If you have one. Mine did not but there was a storage space in its place.

 

Thanks mate, mine doesn't even have a storage space, it's just solid plastic, I'm not sure if I'm being thick here?