Two problems related to brake sensor have been reported for the 2014 Infiniti Q50. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2014 Infiniti Q50 based on all problems reported for the 2014 Q50.
Unsafe vibration and uncontrollable steering when breaking over 40 mph. Sonar sensors doesn't not work at all. When traveling on the highway or streets and above 20 mph when breaking for a traffic light there is an intense vibration that shakes the car and steering wheel, also make turning, controlling the steering wheel and staying in the lane extremely difficult!.
Rear brake pad life is dangerously short. I began to experience squealing and vibration upon braking after only 25,000 miles. There is no suggested replacement interval so I could easily see someone ignoring the symptoms or putting off the pad replacement (most people expect pads to last at least 30,000 miles). There are also no wear sensors for the rear brakes. Someone could easily wear through the pads and have a dangerous rear brake failure since there is no disclosure provided by Infiniti of how short the rear pad life really is.