Lockpick causing problems with MFD?

Hi guys,
I've had a 2004 Prius since last summer, and for nearly all that time I've had a lockpick installed adding the aux input (which I use with my iPhone). Occasionally, when turning on the car, the system wouldn't detect the "DVD Player" option that's used as the aux input. Turning the car off and on would normally resolve the problem.

Yesterday, however, turning the car on resulted in a black screen that eventually simply read "check the system." Since then, sometimes the MFD works, sometimes it works a little (i.e. sluggish or no data, but no "check the system" message, and sometimes it doesn't work at all.

Is this being caused by the lockpick? Do any of you have experience with this kind of problem? I suppose I can take it apart tomorrow and see if the connection has come lose or something, but I'm worried that the MFD has gone bad, since that seems to happen all too often for 2004-2005 cars.

Any input is greatly, greatly appreciated!!!