MMT53

I bought this CPO car from the Dallas dealer 8 months ago. 5 months ago it began to take 3-10 attempts to start. The dealer has had this car in the shop for over 10 weeks since May and cannot fix it because the issue has not been replicated in their shop. It usually happens when I have made a lot of stops and starts and it is hot outside. The warning lights sometimes all come on and then the next time no lights come on. No warnings show on the dealer diagnostics. The only thing they have done is replace a part under the brake
It looks like an electrical issue to me but they won't touch it until it won't start for them. They say if they cannot replicate the issue it is not a lemon. I have dozens of videos but this is the only one small enough to attach.