I used to drive a lot for business. Problems started when the warranty expired. It was like clock work! First the cruise control went dead. Took it to the neighborhood Lexus dealer. They kept my car for a 4 hours and could not find the problem. They were going to charge me $400.00 ($100 per hour) for diagnostics. Naturally, I didn't. Then the speedometer went crazy, going back and forth to not working at all, the car wouldn't shut off. Then nothing, everything would work fine the next day. The dealer told me it's a sensor problem and would cost $ 2000.00 + to repair!
Body design, smooth ride, and handling. It's a great car minus the electronic issues!
I feel the electrical components in this model, being that it is the 1st year of the new body style and most likely newly designed parts for this model, there was a lack of testing on the part of the car maker.