I just bought a I S350 C last week. Even though I’ve put new batteries in both fobs, the first start in the morning may take me two dozen attempts!
Then, o
nce the car has been running, it starts normal while my fob is still in my pocket. I brought it to a detailer and he has spent an hour and a half trying to start the car! Which has never happened to me the dash will light up the steering wheel will come down, but it will not start until it wants to! This is truly baffling! Any advice would be highly coveted!

 

Is there any possibility if you can read the codes? That may give us some idea.