Calibration of LG Navigation unit for 2010 Elantra with
 

Hello! I have a friend who's trying to track down the process to calibrate the touch screen of the navigation in his 2010 Elantra. It's the LG Navigation unit, not the Garmin one.

He's found documentation for key presses to do for other units on newer models (I think the Garmin units) but hasn't found it for the LG Navigation.

His problem is that the edge of the touch screen isn't really picking up input as well as it used to, so he's hoping he can run the calibration and fix it. He's trying to avoid the $3500+ unit replacement.

Any help is much appreciated!