HELP! touch screen navi
 

Hello fellow CL members.
I have an 07 is350 premium package with navi non ML.
So today i was driving my car and the touch screen on my navi isnt responding correctly.
on every mode anywhere i touch the screen it moves to the top right. For example, if i am on the navi mode if i press anywhere on the screen the map moves to the right.
Anyone know how to reset the screen functions or something like that?