I am have the same problem with 2014 Lexus GS 350. This is the 4 time that the car has gone dead. I have purchased 2 new batteries in the last 6 month. The last one was from the dealer, and it is now dead. The dealership claims to not be aware of this problem. I went on the internet and found over 50 cases of Lexus owner having the same issue. The wanted me to install an electrical outlet to connect to the battery at night. My answer was no. Then I was told that I was not driving the car enough miles to keep the battery alive. Today, they told me that they would check with the Lexus Corp to see if they were aware of this problem. I went on the internet and found over 100 complaint of the same issue going back to 2013, on all Lexus Models.
