2019 Infiniti Q50

I have 3 issues with the car. The braking issue presented itself last in time but is most important relative to safety. Around mid January 2022, my car, while I was driving, and without any notice, began to decelerate/brake for no reason. My car is equipped with front driver assist but there were no cars, hazards, in front of me. It was a clear, dry day and the car was warm. It was momentary and fortunately no one was behind me. The car beeped, but there was no other warning. The second time this same event happened, however, the accelerator pushed back against my foot. Again, no one was in front of me and it was a clear, dry day. The third time this happened, the car beeped and what I know now is the cruise control indicator, appeared on the display. I did not touch the cruise control to activate. The other two issues were that both display screens were blacking out and rebooting while driving, for no apparent reason. The other issue is with the Sirius XM satellite, which is not functioning properly. I have informed Sirius XM of this issue as well. Given all of these issues, possibly all electrical, I contacted my local Infiniti dealer to assess, with special concern for the random braking issue. The car was assessed and they could not duplicate any problems. They mentioned that perhaps if they had more time they may be able to duplicate the problems. The following Monday, I took the car to the dealership and left it overnight for assessment. I was called the next day and advised that they could not duplicate the issues. The dealership returned the car without making any repairs, diagnoses, or being to able to duplicate problems. Since the car has been returned to me, it has continued to have problems. The braking issue has happened twice since, with one time involving the accelerator pushing back. The screen has blacked out and gone into parking mode, while I was driving. I have contacted Infiniti corporate to advise of problems.

UNINTENDED ACCELERATION. PULLING INTO A PARKING SPACE IN A SHOPPING CENTER PARKING LOT, AFTER GOING OVER A SPEED BUMP AND MAKING A LEFT HAND TURN INTO THE SPOT THE CAR ACCELERATED AND WOULD NOT STOP. PUSHING ON THE BRAKES DID NOT WORK. CAR HAS A SYSTEM TO PREVENT CRASHING IN TO AN OBJECT IN FRONT OF THE CAR BUT THAT DID NOT WORK. THE CAR STRUCK A POLE IN THE PARKING LOT DOING SIGNIFICANT DAMAGE TO THE RIGHT FRONT OF THE CAR.