Is300h problem

Hi everyone,
So last week I bought a 2013 is300h f sport. It was all good when I bought it but on the 6th day, the meter started showing hybrid system has stopped and the car wouldn't start. Then after 15 minutes of the hybrid system The meter started showing check brake systems and then pop up hood failure.
Though I've sent the car back to the dealer to get it fixed.
What do you guys think should I keep the car after it gets fixed?? Is it something serious??

Thanks in advance