intermittent false start

Is it possible you are prematurely releasing brake pedal while engine is CRANKING?

Yes please post when you find out. Myself and another poster have a different issue, but may be tied to yours. I called The local Lexus dealer yesterday but they had never heard of the problem. My 2015 Lexus GS 350 Sport. Yesterday on a 140 mile drive, the radio locked up and I was unable to raise/lower volume, unable to turn off the radio or control navigation. The steering wheel radio/phone functions would not respond either. I got home, turned off vehicle and restarted it and everything worked ok. I have only driven the vehicle once after the incident and everything is ok so far. I only have 19,500 miles on it. I will post if I find out the cause.