Just a word of caution here if you decide to fit a new screen yourself. I recently had my screen replaced by a well known company who did a botched job with the result mentioned in an earlier post. The screen leaked water into the fuse box, Result: The screen needed replacing/resealing which has been done at no cost but screen Company are haggling and disputing replacement cost of fuse box/battery and all the investigatory work involved by Lexus agents.
Make sure you get a genuine Lexus screen fitted and a cast iron guarantee re workmanship .
Hope this helps.
