A couple of points...
1) Are you sure the Driver Station is enabled. If it isn't you won't get a response back from the Jaguar.
2) GetStatus. Make sure you're using ONDemand status, or if you're using Periodic Status, make sure you have the right settings for the period configured.
3) You can read this thread on my initial testing and discovery of POTS via CAN on a Jaguar here:
http://www.chiefdelphi.com/forums/sh...d.php?t=113070