Infiniti Q30

[Kenjan]

Hi, I got an infiniti Q30 2017 diesel 1.5 believe it's a renault engine having errors on screen emergency brake inoperative plus anti skid goes away after a few starts and stops of engine then comes back any ideas to try someone mentioned changingbsecond battery I passenger footwell can I check it out to see if its faulty. Or what's best OBDI reader for this car.to clear faults..