Owners/service Manual problems of the 2007 Lexus IS250

Defective lcd/touch screen. While driving in the rain, the touchscreen digitizer failed on my car. The windows started to fog up and I realized since the touchscreen failed, I had no way to defog my windshield and other windows. Because I am only able to access the fan controls for both heat and ac, via the touchscreen. So I had to pull over on the sparse emergency pullovers on i66-va several times to manually wipe my windows so I could see. This happened at the worst time because it was during rush-hour, in a downpour. This created a very dangerous situation for me and other drivers as visibility was poor during the downpour. I have researched this on several Lexus/Toyota sites and the wiring of lcd/touchscreen digitizer appears to be a common defect and fails regularly. I am surprised that such a life - safety feature would be dependant on a failure prone system.