My 1997 ES300 has 170,000 plus miles on it and has been great up until recently; I am currently having the power brake booster system replaced. Also, since I had complications with the booster system, my traction system went awry! When I priced the parts through my local Lexus dealership, the price was over $1000 to repair.
I too am having the same problem with the LCD, also the lights on my radio buttons are going out, some do not show up at night so I guess at what I am pressing!