I needed a new battery, which was replaced without question by the dealer.
The plastic cover that protects the bottom of the car from road hazards came off while I was on the highway. Lexus road service sent a tow truck, which took me to a Toyota dealer. The dealer temporarily repaired the problem and the dealer replaced the engine cover. This shouldn't have happened, but they were great about it.
This car has all of the bells and whistles and it's an incredible machine. I don't really use all of them - especially the back seat vibrator!
After this car, I will never be without a GPS navigation system.
In making the decision to lease this car, I compared it to the Mercedes S500 and the Lexus came out ahead.