Renault Captur brake sensors, sat nav, general sensor issues.

Every few miles the checking brake sensor warning message comes on. It also thinks that some road markings are potential collisions.
The touchpad is also slow to catch up and regularly works backwards - by this it will show active braking on when its actually off - the speed limit notification as on when its off and lane change off when on. The latter is dangerous where I live.
Finally the sat nav - this should be in prison for attempted murder by now - several times the turn right after x yards has been shown only to spot the suggested turn would put me up against oncoming traffic. Works well other than this shady dark side it has occasionally - glad its not a driver-less car.
The car is 3 months old with 4000 miles on the clock. The brake sensor issue started after an emergency stop - the other issues since purchase.