The touch screen to operate a/c and fan control will not change when touched
on 2002 Lexus LS430

When adjusting level of A/C flow, touch screen buttons will not always change when touched. Also, adjust clock is problem. Is not recognizing touch.
This has just started. Will it quit completely? Is it expensive to replace. A GPS is also in display, but rarely used.

Asked by for the 2002 Lexus LS430
poss worn out google for screen repair,lexus will be major bucks